Yamaha YFM660FS Owner's Manual
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Yamaha YFM660FS Owner's Manual

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See also: Supplementary Service Manual
READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER'S MANUAL
YFM660FS
WARNING
This ATV should not be ridden by anyone under 16 years of age.
LIT-11626-17-14
5KM-28199-12

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Summary of Contents for Yamaha YFM660FS

  • Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFM660FS WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-17-14 5KM-28199-12...
  • Page 2 EBU00776...
  • Page 3 Yamaha experience in the production of fine sporting, touring, and pace-setting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of crafts- manship and reliability that have made Yamaha a leader in these fields.

  • Page 4: Warning

    EBU00801 I MPORTANT MANUAL INFORMATION FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Failure to follow WARNING instructions could result in severe WARNING...

  • Page 5: Important Notice

    Please check your local riding laws and regulations before operating this machine. EBU00981 YFM660FS OWNER’S MANUAL ©2003 by Yamaha Motor Corporation, AFFIX DEALER U.S.A. 1st edition, March 2003 LABEL HERE All rights reserved.

  • Page 6: Table Of Contents

    EBU00014 CONTROL FUNCTIONS....4-1 WARNING Main switch ........4-1 Indicates a potential hazard that could Indicator and warning lights .....4-2 result in serious injury or death. Speedometer unit ......4-4 Fuel gauge ........4-6 Handlebar switches ......4-6 CONTENTS Throttle lever ........4-13 Speed limiter ........4-14 Front brake lever......4-15 LOCATION OF THE WARNING Rear brake pedal and lever ...4-15...
  • Page 7 PRE-OPERATION CHECKS ... 5-1 Parking on a slope......6-9 Front and rear brakes ..... 5-3 Accessories and loading ....6-10 Fuel ..........5-5 Engine oil ........5-7 RIDING YOUR ATV ......7-1 Final gear oil........5-7 Getting to know your ATV ....7-3 Differential gear oil ......
  • Page 8 PERIODIC MAINTENANCE AND Rear brake lever and pedal ADJUSTMENT........8-1 adjustment ........8-42 Owner’s manual and tool kit.... 8-1 Adjusting the rear brake light Periodic maintenance/ switch ...........8-44 lubrication ........8-3 Cable inspection and lubrication..8-44 Panel removal and installation ..8-5 Brake lever and brake pedal Engine oil and oil filter cartridge ..
  • Page 9 CLEANING AND STORAGE.... 9-1 A. Cleaning........9-1 B. Storage ........9-3 SPECIFICATIONS......10-1 NOISE REGULATION....11-1 MAINTENANCE RECORD .... 12-1 ATV LIMITED WARRANTY ... 13-1 YAMAHA EXTENDED SERVICE (Y.E.S.) ........... 14-1...

  • Page 10: Location Of The Warning And Specification Labels

    EBU00464 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
  • Page 11 NEVER sit here. 3MX-24875-A0 Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer. LOAD LIMIT 85 kg {187 lbs} 4WV-24877-A0 MAXIMUM LOADING LIMIT...
  • Page 13 WARNING UNDER Operating this ATV if you are under the age of 16 increases your chance of severe injury or death. NEVER operate this ATV if you are under age 16. 5FE-21697-01 WARNING Turning the ATV in 4WD-LOCK(“DIFF. LOCK”) takes more effort. Operate at a slow speed and allow extra time and distance for maneuvers to avoid loss of control.

  • Page 14: Safety Information

    EBU01129 SAFETY INFORMATION AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE. An ATV handles differently from other vehicles including motorcycles and cars. A collision or rollover can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper precautions.
  • Page 15 Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You should also wear eye protection (goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and long pants. Never consume alcohol or drugs before or while operating this ATV. Never operate at speeds too fast for your skills or the conditions.
  • Page 16 Always follow proper procedures for climbing hills as described in this manual. Check the ter- rain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. Shift your weight forward. Never open the throttle suddenly. Never go over the top of a hill at high speed.
  • Page 17 Always check for obstacles before operating in a new area. Never attempt to operate over large obstacles, such as large rocks or fallen trees. Always follow proper procedures when op- erating over obstacles as described in this manual. Always be careful when skidding or sliding. Learn to safely control skidding or sliding by prac- ticing at low speeds and on level, smooth terrain.
  • Page 18 WARNING When transporting the ATV in another vehicle, be sure it is kept upright and POTENTIAL HAZARD that the fuel cock is in the “OFF” posi- Improper handling of gasoline. tion. Otherwise, fuel may leak out of the WHAT CAN HAPPEN carburetor or fuel tank.
  • Page 19 WARNING POTENTIAL HAZARD Starting or running the engine in a closed area. WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with adequate ventilation.

  • Page 20: Description And Machine Identification

    EBU00032 DESCRIPTION AND MACHINE IDENTIFICATION 1. Rear shock absorber spring 15. Engine oil dipstick preload adjusting ring 16. Recoil starter 2. Storage compartment and tool kit 17. Coolant reservoir 3. Air filter case 18. Drive select lever box check hose 4.

  • Page 21: Identification Number Records

    This number can be used for ordering a new when ordering spare parts from a Yamaha key. dealer or for reference in case the vehicle is stolen.

  • Page 22: Vehicle Identification Number

    Record the information on this la- bel in the space provided. This information will be needed to order spare parts from your Yamaha dealer. 1. Vehicle identification number NOTE: The vehicle identification number is used to 1.

  • Page 23: Control Functions

    EBU00039 CONTROL FUNCTIONS WARNING Indicates a potential hazard that could result in serious injury or death. EBU00942 Main switch Functions of the respective switch positions are as follows: 1. Main switch The engine can be started only at this position and the headlights and taillight come on when the light switch is on.

  • Page 24: Indicator And Warning Lights

    EBU00802 EBU01130 Indicator and warning lights Differential gear lock indicator light “DIFF. LOCK” This indicator light comes on along with the differential gear lock indicator in the display when the differential gear lock switch is set to the “LOCK-4WD” position. EBU01122 Low-range indicator light “L”...
  • Page 25 If the indicator light flashes or the speedome- when the “LOCK”-“4WD” switch is set to the ter does not show the speed while riding, “LOCK-4WD” position. have a Yamaha dealer check the speed sen- sor circuit. NOTE: Due to the synchronizing mechanism in the...

  • Page 26: Speedometer Unit

    EBU00860 EBU01132 Coolant temperature warning light “ ” Speedometer unit When the coolant temperature reaches a specified level, this light comes on to warn that the coolant temperature is too hot. If the light comes on during operation, stop the en- gine as soon as it is safe to do so and allow the engine to cool down for about 10 minutes.
  • Page 27 a clock Clock mode an hour meter (which shows the total time Pushing the “ ”/“ ” button for at least two the key has been turned to “ON”) seconds switches the display between the clock mode “CLOCK” and the hour meter Odometer and tripmeter modes mode “HOUR”...

  • Page 28: Fuel Gauge

    EBU00843 EBU00053 Fuel gauge Handlebar switches The fuel gauge indicates the amount of fuel in the fuel tank. The display segments of the fuel gauge disappear towards “E” (Empty) as the fuel level decreases. When the “E” segment disappears and the fuel level warning indica- tor flashes, set the fuel cock to reserve and re- fuel as soon as possible.
  • Page 29 EBU12050 Engine stop switch “ ” CAUTION: Make sure that the engine stop switch is set to Do not use the headlights with the engine “ ” before starting the engine. The engine turned off for more than thirty minutes. stop switch controls ignition and can be used The battery may discharge to the point at all times to stop the engine, especially in an...
  • Page 30 In this case, take the ATV to a hold this switch to override the 4WD-LOCK Yamaha dealer at the first opportunity. speed limiting function. (See page 4-11 for a detailed explanation about the differential gear lock switch and its function.) Releasing...
  • Page 31 WARNING POTENTIAL HAZARD Riding too fast while the ATV is in 4WD-LOCK. WHAT CAN HAPPEN All wheels turn at the same speed when the differential is locked, so it takes more effort to turn the ATV. The amount of effort is more the faster you go. You 1.
  • Page 32 Four-wheel drive (4WD): Power is supplied WARNING to the rear and front wheels. POTENTIAL HAZARD Four-wheel drive with the differential gear Changing from 2WD to 4WD or from locked (4WD-LOCK): Power is supplied to 4WD to 4WD-LOCK (“DIFF.LOCK”), or the rear and front wheels when the differen- vice-versa while the ATV is moving.
  • Page 33 1. Lever 1. Differential gear lock switch “LOCK”/“4WD” 2. On-command four-wheel drive switch “2WD”/“4WD” 2. Lever On-command four-wheel drive switch Differential gear lock switch “LOCK”/ “4WD” “2WD”/“4WD” To lock the differential gear in 4WD, make sure To change from 2WD to 4WD, stop the ATV, the on-command four-wheel-drive switch is set and then set the switch to “4WD”.
  • Page 34 NOTE: WARNING When the switch is set to “LOCK”, the dif- POTENTIAL HAZARD ferential gear lock indicator light will flash Riding too fast while the ATV is in until the differential gear is locked. 4WD-LOCK. When the indicator light is flashing, turn- WHAT CAN HAPPEN ing the handlebar back and forth will help All wheels turn at the same speed when...

  • Page 35: Throttle Lever

    Check the operation of the throttle lever before you start the engine. If it does not work smoothly, check for the cause. Correct the problem before riding the ATV. Consult a Yamaha dealer if you 1. Throttle lever can’t find or solve the problem yourself. 4-13...

  • Page 36: Speed Limiter

    EBU11590 Speed limiter WARNING The speed limiter keeps the throttle from fully POTENTIAL HAZARD opening, even when the throttle lever is Improper adjustment of the speed limit- pushed to the maximum. Turning in the ad- er and throttle. justing screw limits the maximum engine pow- WHAT CAN HAPPEN er available and decreases the maximum The throttle cable could be damaged.

  • Page 37: Front Brake Lever

    EBU00070 Front brake lever The front brake lever is located on the right handlebar. Pull it toward the handlebar to ap- ply the front brake. 1. Rear brake pedal 1. Front brake lever EBU00073 Rear brake pedal and lever The brake pedal is located on the right side of the machine and the brake lever is located on the left handlebar.

  • Page 38: Drive Select Lever

    EBU00608 EBU00855 Drive select lever Recoil starter The drive select lever is used to shift your ma- Firmly grasp the handle and pull slightly until chine into the low, high, neutral, reverse and engagement can be felt. Then pull forcefully, park positions.

  • Page 39: Fuel Tank Cap

    EBU00092 Fuel tank cap WARNING Remove the fuel tank cap by turning it coun- POTENTIAL HAZARD terclockwise. Starting the engine without setting the drive select lever to the park position “P”. WHAT CAN HAPPEN The ATV could start to move unexpect- edly, which could cause an accident.

  • Page 40: Fuel Cock

    EBU00093 Fuel cock OFF Position The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position fuel will not flow. Always turn the lever to this position when the engine is not running.

  • Page 41: Starter (Choke)

    EBU00095 Starter (choke) “ ” RES Position Starting a cold engine requires a richer air-fuel mixture. A separate starter circuit supplies this mixture. Move in direction a to turn on the starter (choke). Move in direction b to turn off the starter (choke).

  • Page 42: Seat

    EBU00567 Seat To install the seat, insert the projections on To remove the seat, pull the seat lock lever the front of the seat into the seat holders and upward and pull up the seat at the rear. push down on the seat at the rear. NOTE: Make sure that the seat is securely fitted.

  • Page 43: Storage Compartment

    EBU00858 EBU00582 Storage compartment Front carrier The storage compartment is located under Maximum load limit: 45 kg (99 lb) the seat. (See page 4-20 for seat removal and installation procedures.) When storing the owner’s manual or other EBU00583 documents in the storage compartment, be Rear carrier sure to wrap them in a plastic bag so that they Maximum load limit: 85 kg (187 lb)

  • Page 44: Front And Rear Shock Absorber Adjustment

    NOTE: justing ring in direction a. A special wrench can be obtained at a To decrease the spring preload, turn the ad- Yamaha dealer to make this adjustment. justing ring in direction b. Standard position: B A- Minimum (soft) E- Maximum (hard)
  • Page 45 WARNING POTENTIAL HAZARD Improper shock absorber adjustment. WHAT CAN HAPPEN Uneven adjustment can cause poor handling and loss of stability, which could lead to an accident. HOW TO AVOID THE HAZARD Always adjust the shock absorbers on 1. Special wrench the left and right side to the same set- ting.

  • Page 46: Auxiliary Dc Jack

    EBU01002 Auxiliary DC jack The auxiliary DC jack is located at the front right side of the ATV. The auxiliary DC jack can be used for suitable work lights, radios, etc. The auxiliary DC jack should only be used when the engine is running. 1.
  • Page 47 4. When the auxiliary DC jack is not being used, cover it with the cap. CAUTION: Do not use accessories requiring more than the above maximum capac- ity. This may overload the circuit and cause the fuse to blow. If accessories are used without the engine running or with the headlights turned on, the battery will lose its charge and engine starting may be-...

  • Page 48: Pre-Operation Checks

    PRE-OPERATION CHECKS Before using this machine, check the following points: ITEM ROUTINE PAGE • Check operation, free play, fluid level and fluid leakage. 5-3–5-4, Brakes • Fill with DOT 4 brake fluid if necessary. 8-37–8-44 • Check fuel level. Fuel 5-5–5-6 •...
  • Page 49 WARNING POTENTIAL HAZARD Failure to inspect the ATV before oper- ating. Failure to properly maintain the ATV. WHAT CAN HAPPEN Increases the possibility of an accident or equipment damage. HOW TO AVOID THE HAZARD Always inspect your ATV each time you use it to make sure the ATV is in safe op- erating condition.

  • Page 50: Front And Rear Brakes

    Brake operation are applied. If not, have the machine inspect- Test the brakes at slow speed after starting ed by a Yamaha dealer. out to make sure they are working properly. If the brakes do not provide proper braking per- Brake fluid level formance, inspect the brake pads for wear.
  • Page 51 Always check the brakes at the start of every ride. Do not ride the ATV if you find any problem with the brakes. If a problem cannot be corrected by the ad- justment procedures provided in this manual, have the ATV inspected by a Yamaha dealer.

  • Page 52: Fuel

    Yamaha because it may cause fuel system and piston rings, as well as to the exhaust damage or vehicle performance problems.
  • Page 53 WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury. Fuel expands when it heats up. If the fuel tank is overfilled, fuel could spill out due to heat from the engine or the sun. 1.

  • Page 54: Engine Oil

    EBU10842 EBU00493 Engine oil Final gear oil Make sure the engine oil is at the specified Make sure the final gear oil is at the specified level. Add oil as necessary. (See page 8-12.) level. Add oil as necessary. (See pages 8-17– 8-18 for details.) CAUTION: Recommended oil:...

  • Page 55: Differential Gear Oil

    EBU00678 Differential gear oil Make sure the differential gear oil is at the specified level. Add oil as necessary. (See pages 8-19–8-20 for details.) Recommended oil: SAE 80 API GL-4 Hypoid gear oil...

  • Page 56: Coolant

    EBU12530 Coolant WARNING Check the coolant level in the coolant reser- POTENTIAL HAZARD voir when the engine is cold. (The coolant lev- Removing the radiator cap when the en- el will vary with engine temperature.) The gine and radiator are still hot. coolant level is satisfactory if it is between the WHAT CAN HAPPEN minimum and maximum level marks on the...

  • Page 57: Throttle Lever

    EBU11620 Fittings and fasteners Always check the tightness of chassis fittings and fasteners before a ride. Take the machine to a Yamaha dealer or refer to the Service Manual for correct tightening torque. EBU10030 Lights Check the headlights and tail/brake light to make sure they are in working condition.

  • Page 58: Tires

    HOW TO AVOID THE HAZARD riding conditions. 1. The tires listed below have been ap- The following are minimums: proved by Yamaha Motor Co., Ltd. Front 32 kPa (0.32 kgf/cm , 4.6 psi) for this model. Other tire combina- Rear 27 kPa (0.27 kgf/cm , 3.9 psi)
  • Page 59 4. Use no more than the following pressures when seating the tire beads. Front 250 kPa (2.5 kgf/cm , 36 psi) Rear 250 kPa (2.5 kgf/cm , 36 psi) Higher pressures may cause the tire to burst. Inflate the tires very slowly and carefully.

  • Page 60: How To Measure Tire Pressure

    EBU00159 How to measure tire pressure Use the low-pressure tire gauge. NOTE: The low-pressure tire gauge is included as standard equipment. Make two measure- ments of the tire pressure and use the second reading. Dust or dirt in the gauge could cause the first reading to be incorrect.

  • Page 61: Tire Wear Limit

    EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a. Tire wear limit 5-14...

  • Page 62: Operation

    3. Turn the main switch to “ON” and the en- there is a control or function you do not gine stop switch to “ ”. understand, ask your Yamaha dealer. 4. Shift the drive select lever into the neutral or park position.
  • Page 63 25 °C (80 °F) and warm engine does not come on, ask a Yamaha dealer start position. to inspect its electric circuit. The engine can be started in any gear if the rear brake lever is applied.

  • Page 64: Starting A Warm Engine

    NOTE: CAUTION: If the engine fails to start, release the See the “Engine break-in” section prior to start switch, then push the start switch operating the engine for the first time. again. Pause a few seconds before the next attempt. Each cranking should be as short as possible to preserve battery en- EBU00180 ergy.

  • Page 65: Drive Select Lever Operation And Reverse Driving

    EBU00846 Drive select lever operation and reverse driving CAUTION: Before shifting, you must stop the ma- chine and return the throttle lever to the closed position. Otherwise, the transmis- sion may be damaged. Shifting: Neutral to High and High to Low 1.
  • Page 66 If the light does not the drive select lever along the shift come on, ask a Yamaha dealer to inspect guide. the reverse indicator light electrical cir- cuit.
  • Page 67 5. Open the throttle lever gradually and con- tinue to watch to the rear while backing. WARNING POTENTIAL HAZARD Improperly operating in reverse. WHAT CAN HAPPEN You could hit an obstacle or person be- hind you, resulting in serious injury. HOW TO AVOID THE HAZARD When you shift into reverse, make sure there are no obstacles or people behind...

  • Page 68: Engine Break-In

    For this reason, we ask that you carefully read build up of heat. If any abnormality is noticed the following material. Because the engine is during this period, consult a Yamaha dealer. brand new, you must not put an excessive 1. 0–10 hours: load on it for the first several hours of running.

  • Page 69: Parking

    EBU00612 2. 10–20 hours: Parking Avoid prolonged operation above 3/4 When parking, stop the engine and shift the throttle. Rev the machine freely but do drive select lever into the park position, then not use full throttle at any time. turn the fuel cock to the “OFF”...

  • Page 70: Parking On A Slope

    EBU00615 Parking on a slope 1. Bring the machine to a stop by applying the brakes. WARNING 2. Stop the engine. POTENTIAL HAZARD 3. With the rear brake applied, shift the Parking on a hill or other incline. drive select lever to the park position. WHAT CAN HAPPEN The ATV could roll out of control, in- creasing the chance of an accident.

  • Page 71: Accessories And Loading

    Choose only accessories designed for your dlebars which could make steering difficult, ATV. Your Yamaha dealer has a variety of an accessory that limits your ability to move genuine Yamaha accessories. Other ac-...
  • Page 72 EBU00960 Loading Do not exceed the maximum tongue Cargo or a trailer can change the stability and weight. You can measure tongue weight handling of an ATV. with a bathroom scale. Put the tongue of You must use common sense and good judg- the loaded trailer on the scale with the ment when carrying cargo or towing a trailer.
  • Page 73 Ride more slowly than you would without a WARNING load. The more weight you carry, the slow- POTENTIAL HAZARD er you should go. Although conditions vary, Overloading this ATV or carrying or tow- it is good practice not to exceed low range ing cargo improperly.
  • Page 74 EBU00956 WARNING Indicates a potential hazard that could result in serious injury or death. 6-13...

  • Page 75: Riding Your Atv

    Riding Your...

  • Page 77: Getting To Know Your Atv

    WARNING Indicates a potential hazard that could result in serious injury or death. ride, be sure you have read this Owner’s Man- GETTING TO KNOW YOUR ATV ual completely and understand the operation of This ATV is mainly for utility use, but may also the controls.

  • Page 78: Ride With Care And Good Judgement

    JUDGEMENT Beginning and inexperienced operators should complete the certified training Get training if you are inexperienced. course offered by Yamaha. They should Beginners should get training from a certified then regularly practice the skills learned instructor. in the course and the operating tech- Become familiar with this ATV at slow speeds niques described in this Owner’s Manu-...
  • Page 79 Not recommended for children under 16 years of age. WARNING POTENTIAL HAZARD Failure to follow the age recommenda- tions for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not rec- ommended for their age can lead to se- vere injury or death of the child.
  • Page 80 This machine is designed to carry operator and cargo only - passengers prohibited. WARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/ or your passenger.
  • Page 81 Apparel Operating without protective clothing WARNING increases your chances of severe injury in the event of an accident. Apparel HOW TO AVOID THE HAZARD POTENTIAL HAZARD Always wear an approved motorcycle Operating this ATV without wearing an helmet that fits properly. approved motorcycle helmet, eye pro- You should also wear: tection and protective clothing.
  • Page 82 Do not operate after consuming alcohol or WARNING drugs. POTENTIAL HAZARD Operator’s performance capability is reduced Operating this ATV after consuming al- by the influence of alcohol or drugs. cohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly.
  • Page 83 Pre-operation checks WARNING Always perform the pre-operation checks list- POTENTIAL HAZARD ed on page 5-1 before riding for safety and Operating this ATV with improper tires, proper care of the machine. or with improper or uneven tire pres- WARNING sure. POTENTIAL HAZARD WHAT CAN HAPPEN Failure to inspect the ATV before oper-...
  • Page 84 Speed limiter WARNING For riders less experienced with this model, Indicates a potential hazard that could this model is equipped with a speed limiter in result in serious injury or death. the throttle lever housing. The speed limiter keeps the throttle from fully opening, even Do not operate at speeds too fast for your when the throttle lever is pushed to the maxi- skills or the conditions.
  • Page 85 Loading and accessories WARNING Use extra caution when riding the machine POTENTIAL HAZARD with additional loads, such as accessories or Overloading this ATV or carrying or tow- cargo. The machine’s handling may be ad- ing cargo improperly. versely affected. Reduce your speed when WHAT CAN HAPPEN adding additional loads.
  • Page 86 During operation WARNING Always keep your feet on the footboards dur- POTENTIAL HAZARD ing operation. Otherwise your feet may con- Removing hands from handlebars or tact the rear wheels. feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can re- duce your ability to control the ATV or could cause you to lose your balance and fall off of the ATV.
  • Page 87 Avoid wheelies and jumping. You may lose control of the machine or overturn. WARNING POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, in- cluding an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps.
  • Page 88 Never modify this ATV through improp- er installation or use of accessories. All parts and accessories added to this ve- hicle should be genuine Yamaha or equivalent components designed for use on this ATV and should be installed and used according to instructions. If you have questions, consult an autho- rized ATV dealer.
  • Page 89 Exhaust system Do not touch the hot exhaust system. The exhaust system on the machine is very Do not park the machine in a place hot during and following operation. To prevent where others might be likely to touch it. burns, avoid touching the exhaust system.

  • Page 90: Be Careful Where You Ride

    BE CAREFUL WHERE YOU RIDE This machine is designed for off-road use only. Riding on paved surfaces can cause loss of control. WARNING POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect handling and control of the ATV, and may cause the vehicle to go out of con-...
  • Page 91 Do not ride on any public road, street, or high- way. Riding on public roads can result in collisions with other vehicles. WARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this ATV on any public street, road or highway, even a dirt or...
  • Page 92 Know the terrain where you ride. Ride cau- tiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and oth- er hidden hazards which may cause the ma- chine to upset. WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain.
  • Page 93 WARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or vehicle control, which could result in an acci- dent, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, slippery or loose terrain until you have learned and practiced the skills neces-...
  • Page 94 When riding in an area where you might not WHAT CAN HAPPEN easily be seen, such as desert terrain, mount You could be in a collision. You could a caution flag on the machine. DO NOT use be injured. the flag pole bracket as a trailer hitch. HOW TO AVOID THE HAZARD Always mount a caution flag on the ma- chine to make you more visible.
  • Page 95 Select a large, flat area off-road to become fa- With the engine idling, shift the drive select le- miliar with your ATV. Make sure that this area ver to the low position “L” or the high position is free of obstacles and other riders. You “H”.

  • Page 96: Turning Your Atv

    TURNING YOUR ATV HOW TO AVOID THE HAZARD To achieve maximum traction while riding off- Always follow proper procedures for road in 2WD or 4WD, the two rear wheels are turning as described in this Owner’s mounted solidly on one axle and turn together Manual.
  • Page 97 Once you have learned this technique you should be able to perform it at higher speeds or in tighter curves. Improper riding procedures such as abrupt throttle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the ATV to tip.

  • Page 98: Climbing Uphill

    CLIMBING UPHILL HOW TO AVOID THE HAZARD Use proper riding techniques to avoid vehicle Never operate the ATV on hills too steep overturns on hills. Be sure that you can ma- for the ATV or for your abilities. Practice neuver your ATV well on flat ground before at- on smaller hills before attempting large tempting any incline and then practice riding hills.
  • Page 99 WARNING An obstacle, a sharp drop, or another vehicle or person could be on the other POTENTIAL HAZARD side of the hill. Climbing hills improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Own- er’s Manual.
  • Page 100 If you are climbing a hill and you find that you WARNING have not properly judged your ability to make POTENTIAL HAZARD it to the top, you should turn the ATV around Improperly crossing hills or turning on while you still have forward motion (provided hills.
  • Page 101 When crossing the side of a hill: Always follow proper procedures as de- scribed in the Owner’s Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV. 7-27...
  • Page 102 If your ATV has stalled or stopped and you the front and rear brakes gradually, or dis- believe you can continue up the hill, restart mount the ATV immediately on the uphill side. carefully to make sure you do not lift the front WARNING wheels which could cause you to lose control.
  • Page 103 If you begin rolling backwards: Keep weight uphill. 2WD: Never apply the rear brake while rolling backwards. Apply the front brake. 4WD or 4WD-LOCK: Apply both front and rear brakes gradually. When fully stopped, shift to the park- ing position “P”. Dismount on uphill side or to a side if pointed straight uphill.

  • Page 104: Riding Downhill

    RIDING DOWNHILL When this ATV is in 4WD or 4WD-LOCK, all When riding your ATV downhill, shift your wheels (front and rear) are interconnected by weight as far to the rear and uphill side of the the drive train. This means that applying either ATV as possible.
  • Page 105 WARNING POTENTIAL HAZARD Going down a hill improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. Always follow proper procedures for go- ing down hills as described in this Own- er’s Manual. Note: a special technique is required when braking as you go down a hill.

  • Page 106: Crossing A Slope

    CROSSING A SLOPE WARNING Traversing a sloping surface on your ATV re- POTENTIAL HAZARD quires you to properly position your weight to Improperly crossing hills or turning on maintain proper balance. Be sure that you hills. have learned the basic riding skills on flat WHAT CAN HAPPEN ground before attempting to cross a sloping Could cause loss of control or cause the...
  • Page 107 7-33...

  • Page 108: Crossing Through Shallow Water

    CROSSING THROUGH SHALLOW WATER Remember that wet brakes may have re- The ATV can be used to cross slow moving, duced stopping ability. Test your brakes shallow water of up to a maximum of 35 cm after leaving water. If necessary, apply (14 inches) in depth.
  • Page 109 Test your brakes after leaving the water. Do CAUTION: not continue to ride your ATV without verifying After riding your ATV in water, be sure to that you have regained proper braking ability. drain the trapped water by removing the check hose at the bottom of the air filter case and the check hose on the V-belt cooling duct.
  • Page 110 1. V-belt cooling duct check hose (Left side) 1. Drive select lever box check hose 1. V-belt case drain plug 7-36...

  • Page 111: Riding Over Rough Terrain

    RIDING OVER ROUGH TERRAIN WARNING Riding over rough terrain should be done with POTENTIAL HAZARD caution. Look out for obstacles which could Improperly operating over obstacles. cause damage to the ATV or could lead to an WHAT CAN HAPPEN upset or accident. Be sure to keep your feet Could cause loss of control or a colli- firmly mounted on the footboards at all times.

  • Page 112: Sliding And Skidding

    SLIDING AND SKIDDING If the rear wheels of your ATV start to slide Care should be used when riding on loose or sideways, control can usually be regained (if slippery surfaces since the ATV may slide. If there is room to do so) by steering in the direc- unexpected and uncorrected, sliding could tion of the slide.
  • Page 113 With practice, over a period of time, skill at WARNING controlled sliding can be developed. The ter- POTENTIAL HAZARD rain should be chosen carefully before at- Skidding or sliding improperly. tempting such maneuvers, since both stability WHAT CAN HAPPEN and control are reduced. Bear in mind that You may lose control of this ATV.

  • Page 114: What To Do If

    WHAT TO DO IF ... If your ATV starts to slide sideways: This section is designed to be a reference Steer in the direction of the slide if you have guide only. Be sure to read each section on the room. Applying the brakes or accelerat- riding techniques completely.
  • Page 115 If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to main- tain proper balance. If the ATV starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance.

  • Page 116: Periodic Maintenance And Adjustment

    EBU00515 PERIODIC MAINTENANCE AND Have a Yamaha dealer perform service if ADJUSTMENT you are not familiar with machine service. Periodic inspection, adjustment and lubrica- tion will keep your machine in the safest and EBU00562 most efficient condition possible. Safety is an Owner’s manual and tool kit...
  • Page 117 HOW TO AVOID THE HAZARD during a service operation requiring one, take Never modify this ATV through improp- your machine to a Yamaha dealer to check er installation or use of accessories. All the torque settings and adjust them as neces- parts and accessories added to this ve- sary.

  • Page 118: Periodic Maintenance/Lubrication

    EBU00261 PERIODIC MAINTENANCE/LUBRICATION INITIAL EVERY Whichever mile 1,500 1,500 3,000 ITEM ROUTINE comes first (km) (320) (1,200) (2,400) (2,400) (4,800) hours • Check valve clearance. Valves* • Adjust if necessary. • Check coolant leakage. Cooling system • Repair if necessary. •...
  • Page 119 • Correct if necessary. • Check operation. Lights and switches* • Adjust headlight beam. * It is recommended that these items be serviced by a Yamaha dealer. ** Lithium-soap-based grease NOTE: • Recommended brake fluid: DOT 4 • Brake fluid replacement: 1.

  • Page 120: Panel Removal And Installation

    EBU00614 Panel removal and installation The panels illustrated need to be removed to perform some of the maintenance described in this chapter. Refer to this section each time a panel has to be removed or reinstalled. 4. Panel D 5. Panel E 6.
  • Page 121 EBU00879 Panels A and D To remove 1. Remove the seat. (See page 4-20 for seat removal and installation proce- dures.) 2. Pull outward on the area shown, and then pull upward as shown. 1. Panel D 1. Panel A...
  • Page 122 To install 1. Insert the panel projections in the numer- ical order shown in the illustration, and then push inward on the area shown. 2. Install the seat. 1. Panel D 1. Panel A...
  • Page 123 EBU00962 Panel B CAUTION: To remove When installing the panel, be sure not to Remove the bolts. pinch the cables or wires. To install Place the panel in the original position and in- stall the bolts. 1. Panel B 2. Bolt (× 2)
  • Page 124 EBU01141 Panel C To remove 1. Remove the front carrier by removing the stay covers at the rear, then by removing the bolts. 2. Remove the quick fasteners and pull the panel upward. 1. Bolt (× 2) (TOP) 1. Front carrier stay cover (× 2) 1.
  • Page 125 To install 1. Place the panel in the original position and install the quick fasteners. 2. Install the front carrier by installing the bolts and tightening them to the specified torques. Tightening torques: Carrier bolt (top): 26 Nm (2.6 m·kgf, 19 ft·lbf) 1.
  • Page 126 EBU01013 EBU00638 Panel E Panel F To remove To remove Remove the bolts, and then take the panel off. Pull outward on the areas shown. To install Place the panel in the original position, and then install the bolts. 1. Panel F 1.

  • Page 127: Engine Oil And Oil Filter Cartridge

    EBU10991 To install Engine oil and oil filter cartridge Place the panel in its original position. The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter cartridge replaced at the inter- vals specified in the periodic maintenance and lubrication chart.
  • Page 128 5. Remove the engine oil filler cap and wipe 6. Insert the dipstick in the oil filler hole off the dipstick with a clean rag. (without screwing it in), and then remove it again to check the oil level. NOTE: The engine oil should be between the mini- mum and maximum level marks.
  • Page 129 7. If the engine oil is at or below the mini- To change the engine oil (with or without oil filter cartridge replacement) mum level mark, add sufficient oil of the recommended type to raise it to the cor- 1. Remove panel F. (See pages 8-11–8-12 rect level.
  • Page 130 6. Remove the oil filter cartridge with an oil filter wrench. 1. O-ring 1. Engine oil filter cartridge 2. Oil filter wrench NOTE: An oil filter wrench is available at a nearby Yamaha dealer. 8-15...
  • Page 131 8. Install the new oil filter cartridge with an 9. Install panel D. oil filter wrench, and then tighten it to the 10. Install the engine oil drain bolt, and then specified torque with a torque wrench. tighten it to the specified torque. Tightening torque: Engine oil drain bolt: 30 Nm (3.0 m·kgf, 22 ft·lbf)

  • Page 132: Final Gear Oil

    In order to prevent clutch slippage leakage before each ride. If any leakage is (since the engine oil also lubricates found, have a Yamaha dealer check and re- the clutch), do not mix any chemical pair the ATV. additives. Do not use oils with a diesel specification of “CD”...
  • Page 133 Recommended oil: See page 10-3. Oil quantity: Periodic oil change: 0.25 L (0.22 Imp qt, 0.26 US qt) Total amount: 0.30 L (0.26 Imp qt, 0.32 US qt) CAUTION: 1. Final gear oil drain bolt Be sure no foreign material enters the final 4.

  • Page 134: Differential Gear Oil

    EBU00706 Differential gear oil 3. Install the oil filler bolt and tighten it to the Differential gear oil measurement specified torque. 1. Place the machine on a level place. Tightening torque: 2. Remove the oil filler bolt and check the oil Oil filler bolt: level.
  • Page 135 4. Install the drain bolt and tighten it to the CAUTION: specified torque. Be sure no foreign material enters the dif- ferential gear case. Tightening torque: Drain bolt: 6. Install the filler bolt and tighten it to the 10 Nm (1.0 m·kgf, 7.2 ft·lbf) specified torque.

  • Page 136: Cooling System

    EBU12560 Cooling system 3. If the coolant is at or below the minimum 1. Place the ATV on a level surface. level mark, remove panel D (See pages 2. Check the coolant level in the coolant 8-6–8-7 for panel removal and installa- reservoir when the engine is cold as the tion procedures.), remove the reservoir coolant level will vary with engine tem-...
  • Page 137 EBU00887 Changing the coolant NOTE: If water is added, have a Yamaha dealer WARNING check the antifreeze content of the cool- POTENTIAL HAZARD ant as soon as possible. Removing the radiator cap when the en- The radiator fan operation is completely gine and radiator are still hot.
  • Page 138 1. Place the ATV on a level surface. 2. Remove panels E and F. (See pages 8-11–8-12 for panel removal and installa- tion procedures.) 3. Place a container under the engine, and then remove the coolant drain bolt. (Use a trough or a similar object as shown to prevent coolant from spilling on the foot- rest.) 1.
  • Page 139 1. Radiator cap 1. Coolant reservoir drain hose 5. Remove the radiator cap. 8. After draining the coolant, thoroughly 6. Remove the coolant reservoir cap. flush the cooling system with clean tap 7. Disconnect the hose on the coolant res- water.
  • Page 140 Total amount: NOTE: 1.8 L (1.58 Imp qt, 1.90 US qt) If any leakage is found, have a Yamaha deal- Coolant reservoir capacity er check the cooling system. (up to the maximum level mark): 0.3 L (0.26 Imp qt, 0.32 US qt) 16.

  • Page 141: Axle Boots

    EBU00862 Axle boots Check the protective boots for holes or tears. If any damage is found, have them replaced by a Yamaha dealer. 1. Rear axle boot (× 2 each side) 1. Front axle boot (× 2 each side) 8-26...

  • Page 142: Spark Plug Inspection

    EBU00864 Spark plug inspection Removal 1. Remove panel A. (See pages 8-6–8-7 for panel removal and installation proce- dures.) 2. Remove the spark plug cap. 1. Spark plug wrench 1. Spark plug cap 3. Use the spark plug wrench in the tool kit to remove the spark plug as shown.
  • Page 143 ATV that is being ridden normally. Do not attempt to diagnose such problems yourself. Instead, take the ATV to a Yamaha dealer. You should periodically re- move and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.
  • Page 144 Installation Tightening torque: 1. Measure the electrode gap with a wire Spark plug: thickness gauge and, if necessary, adjust 17.5 Nm (1.75 m·kgf, 12.5 ft·lbf) the gap to specification. NOTE: Spark plug gap: If a torque wrench is not available when you 0.8–0.9 mm (0.031–0.035 in) are installing a spark plug, a good estimate of the correct torque is 1/4 to 1/2 turn past finger...

  • Page 145: Air Filter Element Cleaning

    EBU12110 Air filter element cleaning NOTE: There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. 1.
  • Page 146 WARNING POTENTIAL HAZARD Using low flash point solvents or gaso- line to clean the air filter element. WHAT CAN HAPPEN Low flash point solvents or gasoline can catch fire or explode. HOW TO AVOID THE HAZARD Use parts cleaning solvent to clean the 1.
  • Page 147 8. Apply Yamaha foam air filter oil or other 12. Install the seat. quality foam air filter oil to the air filter el- NOTE: ement. If foam air filter oil is not available, The air filter element should be cleaned every engine oil may be used.

  • Page 148: Spark Arrester Cleaning

    EBU01066 Spark arrester cleaning Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolts. 2. Remove the tailpipe by pulling it out of the muffler. 3. Tap the tailpipe lightly, and then use a wire brush to remove any carbon depos- its from the spark arrester portion of the tailpipe.
  • Page 149 EBU00874 V-belt cooling duct check hose WARNING If dust or water collects in the V-belt cooling POTENTIAL HAZARD duct check hose, remove the hose and clean Improper cleaning of the spark arrester. Hot exhaust system WHAT CAN HAPPEN Could injure the eyes. Could cause burns.

  • Page 150: Carburetor Adjustment

    V-belt case, remove this plug to requires very sophisticated adjustment. Most drain the water from the case. adjusting should be left to a Yamaha dealer who has the professional knowledge and ex- NOTE: perience to do so. However, the idling speed...

  • Page 151: Idle Speed Adjustment

    To prevent this, the valve clear- increase the engine speed, and in direc- ance must be adjusted regularly. This adjust- tion b to decrease the engine speed. ment however, should be left to a professional Yamaha service technician. Specified idle speed: 1,450–1,550 r/min 8-36...

  • Page 152: Throttle Lever Adjustment

    NOTE: If a brake pad thickness is less than 1 mm Adjust the engine idling speed before adjust- (0.04 in), have a Yamaha dealer replace the ing the throttle lever free play. pads as a set. 1. Loosen the locknut.

  • Page 153: Rear Brake Pad Inspection

    Insufficient brake fluid may let air enter the If the thickness is less than the specified val- brake system, possibly causing the brakes to ue, have a Yamaha dealer replace the pads. become ineffective. Before riding, check that the brake fluid is above the lower level and replenish when necessary.
  • Page 154 Observe these precautions: FRONT 1. When checking the fluid level, make sure the top of the master cylinder reservoir is level by turning the handlebars. 2. Use only the designated quality brake flu- id. Otherwise, the rubber seals may dete- riorate, causing leakage and poor brake performance.

  • Page 155: Brake Fluid Replacement

    Complete fluid replacement should be done spilled fluid immediately. only by trained Yamaha service personnel. 6. Have a Yamaha dealer check the cause Have a Yamaha dealer replace the following if the brake fluid level goes down. components during periodic maintenance or when they are damaged or leaking.

  • Page 156: Front Brake Lever Free Play

    The front brake lever should have a free play POTENTIAL HAZARD of zero mm (zero in) at the lever end. If not, Operating with improperly serviced or have a Yamaha dealer check the brake sys- adjusted brakes. tem. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident.

  • Page 157: Rear Brake Lever And Pedal Adjustment

    2 mm (0.02–0.08 in). 3. Tighten the locknut. 1. Loosen the locknut. If correct free play cannot be obtained, ask a Yamaha dealer to make that adjustment. NOTE: When adjusting the rear brake lever free play: Be sure not to step on the brake pedal.
  • Page 158 The top of the brake pedal should be posi- You could lose braking ability, which tioned 72 mm (2.8 in) above the top of the could lead to an accident. footrest. If not, ask a Yamaha dealer to adjust HOW TO AVOID THE HAZARD After servicing: Make...

  • Page 159: Adjusting The Rear Brake Light Switch

    Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. Recommended lubricant: Yamaha chain and cable lube or 1. Rear brake light switch 2. Adjusting nut SAE 10W30 motor oil...

  • Page 160: Brake Lever And Brake Pedal Lubrication

    EBU00717 Brake lever and brake pedal lubrication Lubricate the pivoting parts. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) 8-45...

  • Page 161: Rear Knuckle Upper And Lower Pivot Lubrication

    EBU13110 EBU01112 Rear knuckle upper and lower pivot Wheel removal lubrication 1. Loosen the wheel nuts. Lubricate the knuckle upper and lower pivots 2. Elevate the ATV and place a suitable with a grease gun. stand under the frame. 3. Remove the nuts from the wheel. 4.

  • Page 162: Wheel Installation

    EBU01121 Wheel installation 1. Install the wheel and the nuts. NOTE: Tapered nuts are used for both the front and rear wheels. Install the nut with its ta- pered side towards the wheel. The arrow mark on the tire must point toward the rotating direction of the wheel.

  • Page 163: Battery

    Keep out of reach of chil- tery. If the battery seems to have discharged, dren. consult a Yamaha dealer. Antidote: EXTERNAL: Flush with water. CAUTION: INTERNAL: Drink large quantities of wa- Do not try to remove the sealing caps of ter or milk.

  • Page 164: Battery Maintenance

    Then turn on the switches. If CAUTION: the fuse immediately blows again, con- A special battery charger (constant volt- sult a Yamaha dealer. age/ampere or constant voltage) is re- quired recharging sealed-type battery.
  • Page 165 WARNING POTENTIAL HAZARD Using an improper fuse. WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire. HOW TO AVOID THE HAZARD Always use a fuse of the specified rat- 1. Main fuse 2.

  • Page 166: Replacing A Headlight Bulb

    EBU01125 Replacing a headlight bulb If a headlight bulb burns out, replace it as fol- lows. 1. Remove the bulb holder cover at the rear of the headlight by pulling it off. 1. Bulb holder cover 2. Remove the headlight bulb holder by turning it counterclockwise.

  • Page 167: Headlight Beam Adjustment

    Headlight beam adjustment in and turning it counterclockwise. CAUTION: WARNING It is advisable to have a Yamaha dealer POTENTIAL HAZARD make this adjustment. A headlight bulb is hot when it is on and To raise the beam, turn the adjusting screw in immediately after it is turned off.

  • Page 168: Tail/Brake Light Bulb Replacement

    EBU00412 Tail/brake light bulb replacement Troubleshooting If the tail/brake light bulb burns out, have a Although Yamaha machines receive a rigid in- Yamaha dealer replace it. spection before shipment from the factory, trouble may occur during operation. Any prob- lem in the fuel, compression, or ignition sys- tems can cause poor starting and loss of power.
  • Page 169 WARNING POTENTIAL HAZARD Checking the fuel system while smok- ing or near an open flame. WHAT CAN HAPPEN Fuel can ignite or explode, causing se- vere injury or property damage. HOW TO AVOID THE HAZARD Do not smoke when checking the fuel system.

  • Page 170: Troubleshooting Charts

    No fuel. 2. Compression There is compression. Compression normal. Use the electric starter to see if there is compression. Ask a Yamaha dealer to No compression. inspect. 3. Ignition Wipe clean with dry cloth. Ignition system is Spark is good.
  • Page 171 Restart the engine. If the engine overheats again, ask a Level is OK. Yamaha dealer to inspect and/or repair the cooling system. NOTE: If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the recommended coolant as soon as possible.

  • Page 172: Cleaning And Storage

    EBU00419 CLEANING AND STORAGE CAUTION: ¯ Excessive water pressure may cause wa- A. CLEANING ter seepage and deterioration of wheel Frequent, thorough cleaning of your machine bearings, brakes, transmission seals and will not only enhance its appearance but will electrical devices. Many expensive repair improve its general performance and extend bills have resulted from improper high the useful life of many components.
  • Page 173 6. Clean the seat with a vinyl upholstery WARNING cleaner to keep the cover pliable and POTENTIAL HAZARD glossy. Operation with wet brakes after wash- 7. Automotive type wax may be applied to ing. all painted and chrome plated surfaces. WHAT CAN HAPPEN Avoid combination cleaner-waxes.

  • Page 174: Storage

    Do not apply oil to fuel) any rubber parts or the seat cover. NOTE: Use of fuel stabilizer and conditioner elimi- nates the need to drain the fuel system. Con- sult a Yamaha dealer if the fuel system needs to be drained instead.
  • Page 175 7. Remove the battery and charge it. Store it in a dry place and recharge it once a month. Do not store the battery in an ex- cessively warm or cold place (less than 0 °C (30 °F) or more than 30 °C (90 °F)). NOTE: Make any necessary repairs before storing the machine.

  • Page 176: Specifications

    EBU00428 SPECIFICATIONS Model YFM660F Dimensions: Overall length 2,085 mm (82.1 in) Overall width 1,150 mm (45.3 in) Overall height 1,210 mm (47.6 in) Seat height 880 mm (34.6 in) Wheelbase 1,275 mm (50.2 in) Minimum ground clearance 275 mm (10.8 in) Minimum turning radius 3,200 mm (126.0 in) Basic weight:...
  • Page 177 Model YFM660F Engine oil: 0° 10° 30° 50° 70° 90° 110° 130°F Type YAMALUBE 4 (20W40) or SAE 20W40 YAMALUBE 4 (10W30) or SAE 10W30 SAE 5W30 -20° -10° 0° 10° 20° 30° 40° 50°C Recommended engine oil classification API Service SE, SF, SG type or higher CAUTION: In order to prevent clutch slippage (since the en- gine oil also lubricates the clutch), do not mix any...
  • Page 178 Model YFM660F Final gear case oil: Type SAE80 API “GL-4” Hypoid gear oil Quantity: Periodic oil change 0.25 L (0.22 Imp qt, 0.26 US qt) Total amount 0.30 L (0.26 Imp qt, 0.32 US qt) Differential gear case oil: Type SAE80 API “GL-4”...
  • Page 179 Model YFM660F Spark plug: Type/manufacturer DPR8EA-9 / NGK Spark plug gap 0.8–0.9 mm (0.031–0.035 in) Clutch type: Wet, centrifugal automatic Transmission: Primary reduction system V-belt Secondary reduction system Shaft drive 41/21 × 24/18 × 33/9 (9.544) Secondary reduction ratio Transmission type V-belt automatic Operation Left hand operation...
  • Page 180 Model YFM660F Brake: Front brake type Dual disc brake operation Right hand operation Rear brake type Single disc brake operation Left hand and right foot operation Suspension: Front suspension Double wishbone Rear suspension Double wishbone Shock absorber: Front shock absorber Coil spring / oil damper Rear shock absorber Coil spring / oil damper...
  • Page 181 Model YFM660F Bulb voltage, wattage × quantity: 12 V, 30 W / 30 W × 2 Headlight 12 V, 5 W / 21 W × 1 Tail/brake light Indicator light: LED × 1 Neutral indicator light LED × 1 Reverse indicator light LED ×...

  • Page 182: Noise Regulation

    EBU00430 N OISE REGULATION TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inop- erative by any person other than for purposes of maintenance, repair, or replacement of any de- vice or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.

  • Page 183: Maintenance Record

    EBU01126 M AINTENANCE RECORD Copies of work orders and/or receipts for parts you purchase and install will be required to docu- ment maintenance done in accordance with the warranty. The chart below is printed only as a re- minder to you that the maintenance work is required. It is not acceptable proof of maintenance work.

  • Page 184: Atv Limited Warranty

    EBU00432 YAMAHA MOTOR CORPORATION, U.S.A. ATV LIMITED WARRANTY 13-1...
  • Page 185 13-2...

  • Page 186: Yamaha Extended Service (Y.e.s.)

    EBU00435 YAMAHA EXTENDED SERVICE (Y.E.S.) 14-1...
  • Page 187 EBU00436 WARNING Indicates a potential hazard that could result in serious injury or death. 14-2...
  • Page 188 EBU00437...
  • Page 189 LOCATE AND READ OWNER’S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS. (For replacement manual, call 1-800-532-1558) YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2003.04-7.1×1 CR...

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