KYMCO Mongoose 250 Owner's Manual
  1. Manuals
  2. Brands
  3. KYMCO Manuals
  4. Offroad Vehicle
  5. Mongoose 250
  6. Owner's manual
KYMCO Mongoose 250 Owner's Manual

KYMCO Mongoose 250 Owner's Manual

Hide thumbs Also See for Mongoose 250:
Table of Contents

Advertisement

Quick Links

See also: Service Manual
OWNER'S MANUAL
KWANG YANG MOTOR CO.,LTD.
Mongoose 250
OFF-ROAD

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Mongoose 250 and is the answer not in the manual?

Questions and answers

Related Manuals for KYMCO Mongoose 250

Summary of Contents for KYMCO Mongoose 250

  • Page 1 OWNER'S MANUAL KWANG YANG MOTOR CO.,LTD. Mongoose 250 OFF-ROAD...

  • Page 3: Important Notices

    IMPORTANT NOTICES READ THIS MANUAL CAREFULLY Your Owner's Manual contains important information on safety, operation, and maintenance. Any one who operates this ATV should carefully read and understand the contents of this manual before riding the vehicle. AGE RECOMMENDATION The minimum recommended age for this ATV model is 16. Children under age 16 should never operate this vehicle.
  • Page 4 SPECIAL MESSAGES KYMCO provides many important safety messages both in this manual and on the vehicle. For your safety and the safety of others, pay special attention to all warnings preceded by this alert symbol . Failure to follow the warnings contained in this manual can result in SERIOUS INJURY or DEATH.
  • Page 5 WARNING All information in this publication is based on the latest product information available at the time of approval for printing. KWANG YANG MOTOR CO.,LTD reserves the right to make changes at any time without notice and without incurring any obligation.

  • Page 6: Table Of Contents

    CONTENTS Page Page LOCATION OF THE WARNING AND CONTROL FUNCTIONS......17 SPECIFICATION LABELS......1 Ignition switch........17 Indicator lamps........18 Handlebar switches......20 Throttle lever........22 SAFETY INFORMATION......4 Speed limiter........23 Front brake ........24 Rear brake .........24 DESCRIPTION AND MACHINE Parking brake........25 IDENTIFICATION........11 Drive select lever.........26 Key identification number.....11 Fuel tank cap ........26 Frame and engine serial number....12 Fuel valve...........27...
  • Page 7 Page Page PRE-OPERATION CHECKS......31 Parking ..........51 Drive select lever ........32 Parking on a slope ......52 Front and rear brakes......35 Loading ..........53 Fuel ...........36 Accessories ........54 Engine and transmission oil ....38 Riding Your ATV ........56 Chain ..........39 GETTING TO KNOW YOUR ATV ..57 Throttle lever........39 Fittings and fasteners......39 RIDE WITH CARE AND...
  • Page 8 Page Page PERIODIC MAINTENANCE AND Rear swing arm lubrication ....124 ADJUSTMENT.........97 Draining the V-belt compartment..125 Tool kit..........97 Cable inspection and lubrication..125 PERIODIC MAINTENANCE/ Wheel removal.........126 LUBRICATION........99 Wheel installation......126 Engine oil .........101 Battery ..........127 Transmission oil........105 Fuse replacement......129 Spark plug inspection......107 Air filter cleaning........108 Headlight beam adjustment....130 Idle speed adjustment ......113...
  • Page 9 Page NOISE REGULATION......141 MAINTENANCE RECORD.......142 INDEX...........143...

  • Page 10: Location Of The Warning And Specification Labels

    LOCATION OF THE WARNING AND SPECIFICATION LABELS...
  • Page 11 Warning information Anyone who rides the vehicle should read and understand this information before riding. They contain important information for safe and proper operation of your ATV. The labels should be considered as permanent parts of the vehicle. If a label comes off or becomes hard to read, contact your KYMCO dealer for replacements.
  • Page 12 WARNING IMPROPER TIRE PRESSURE OR OVERLOADING CAN CAUSE LOSS OF CONTROL. LOSS OF CONTROL CAN RESULT IN SEVERE INJURY OR DEATH. OPERATING TIRE PRESSURE : Set with tires cold Recommended : FRONT : 25~32kpa, (0.25~0.32kgf/cm ), 3.5~4.5psi REAR 25~32kpa, (0.25~0.32kgf/cm ), 3.5~4.5psi Never set tire pressure below recommended.
  • Page 13 WARNING Improper ATV use can result in SEVERE INJURY or DEATH. ALWAYS USE AN NEVER USE NEVER CARRY NEVER USE APPROVED ON PUBLIC PASSENGERS WITH DRUGS HELMET AND ROADS OR ALCOHOL PROTECTIVE GEAR NEVER operate : Without proper training or instruction. At speeds too fast for your skills or the conditions.

  • Page 14: Safety Information

    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. An accident can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper pre- cautions.
  • 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 terrain 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 operating over obstacles as described in this manual. Never operate an ATV in fast flowing water or in water deeper than that recommended in this manual.
  • Page 18 WARNING WHAT CAN HAPPEN Gasoline is poisonous and can cause injuries. POTENTIAL HAZARD HOW TO AVOID THE HAZARD Improper handling of gasoline. If you should swallow some gasoline or inhale WHAT CAN HAPPEN a lot of gasoline vapor, or get some gasoline in Gasoline can catch fire and you could be your eyes, see your doctor immediately.
  • 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 machine in an area with adequate ventilation.

  • Page 20: Description And Machine Identification

    DESCRIPTION AND MACHINE IDENTIFICATION Identification number records Key identification number Record the key identification number, frame The key identification number is stamped on serial number, engine serial number and the hang tag as shown in the following model code information for assistance when illustration.

  • Page 21: Frame And Engine Serial Number

    Frame and engine serial number Model code The frame serial number is stamped on the MODEL CODE: front of the frame. LA50AA (The rear brake is operated either The engine serial number is stamped on the By depressing the brake pedal or left crankcase.

  • Page 22: Parts Location

    Parts location (05) (04) (03) (02) (01) (01) Headlight Headlight switch Starter button Engine stop switch Passing signal switch (03) Drive select lever (04) Throttle lever (05) Seat...
  • Page 23 (09) (08) (07) (06) (06) Front brake lever ) Fuel valve (08) Tool kit (09) Taillight/Stop light (10) Reservoir water tank (11) Rear brake pedal fluid r eservoir (12) Engine oil inspection window (10)(11) (12)
  • Page 24 (15) (14) (13) (13) Exhaust system ) Choke knob (15) Rear brake lever (Mode code: LA50AA) (16) Front wheel (17) Rear wheel (18) Seat lock lever (16) (17) (18)
  • Page 25 (18) Flat pole bracket (22) (21) (20) (19) (18) ) Right operator footpeg (20) Rear brake pedal (21) Front parking brake (22) Ignition switch (23) Rear parking brake (24) Coolant temperature warning lamp High beam indicator lamp Neutral indicator lamp Reverse indicator lamp (25) Fuel fill cap (26) Left operator footpeg...

  • Page 26: Control Functions

    CONTROL FUNCTIONS Ignition switch Functions of the respective switch positions are as follows: OFF: All electrical circuits are switched off. The key can be removed in this position. ON ( The headlight can be turned on. With the engine stop switch at run ( ) and the transmission in neutral, the engine can be (1) Ignition switch...

  • Page 27: Indicator Lamps

    Indicator lamps Neutral indicator lamp The neutral indicator lamp will light when the transmission is in neutral and the ignition switch is ON ( High beam indicator lamp The high beam indicator lamp will light when the headlight switch to select high beam ( )and the ignition switch is ON ( (1) Reverse indicator lamp...
  • Page 28 Coolant temperature warning lamp Coolant temperature warning lamp checking methed When the coolant temperature reaches a specified level, this light comes on to warn that ． Turn the ignition to " " the coolant temperature is too hot. If the light and the engine stop comes on during operation, stop the engine as switch "...

  • Page 29: Handlebar Switches

    Handlebar switches Stater button To starter the engine, press the starter button, with the transmission in neutral, the ignition switch ON ( ) and the engine stop switch at RUN ( CAUTION: See starting instructions prior to starting engine (see page 44 for details). NOTE: (1) Headlight switch (2) Starter button...
  • Page 30 Engine stop switch When the switch is in the RUN ( ) position, the engine will operate. When the switch is in OFF ) position, the engine will not operate. This switch is intended primarily as a safety or emergency control, and it should normally remain in the RUN ( ) position.

  • Page 31: Throttle Lever

    Throttle lever It is operated by the thumb. Pressing the lever WARNING opens the throttle. When pressure is released, spring tension automatically closes the throttle. POTENTIAL HAZARD Regulate the speed of the machine by varying Malfunction of throttle. the throttle position. WHAT CAN HAPPEN The throttle could be hard to operate, making it difficult to speed up or slow down...

  • Page 32: Speed Limiter

    Speed limiter The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed WARNING to the maximum. Screwing in the adjuster limits the maximum engine power available and decreases the maximum speed of the ATV. POTENTIAL HAZARD Improper adjustment of the speed limiter and throttle.

  • Page 33: Front Brake

    Front brake Rear brake The front brakes are operated by squeezing the (Model code: LA50AA) front brake lever. The rear brake is operated either by depressing the brake pedal or by squeezing the rear brake lever, near left handgrip. (Model code: LA50AB) The rear brake is operated by depressing the brake pedal.

  • Page 34: Parking Brake

    Parking brake WARNING To set the parking brake, squeeze the front POTENTIAL HAZARD brake lever and lock it with the lock lever. Always set the parking brake when parking and before Improper use of the parking brake. starting the engine. To unlock the parking brake, squeeze the front WHAT CAN HAPPEN brake lever until the lock lever releases.

  • Page 35: Drive Select Lever

    Drive select lever Fuel tank cap The drive select lever is used for driving the After refueling, be sure to tighten the fuel tank machine either forward or in reverse. Refer to cap until it clicks. page 32 ~ 35 and 47 ~48 for drive select lever Insert the breather tube into the handlebar cover adjustment and operation.

  • Page 36: Fuel Valve

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

  • Page 37: Starter (Choke)

    Starter (choke) 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). Refer to "starting a cold engine" for proper operation.

  • Page 38: Seat

    To install the seat, align the tabs on the seat with Seat the grommets on the frame and press the seat To remove the seat, pull right the seat lock lever down until it locks. and pull up the seat the rear. NOTE: Make sure that the seat is securely fitted.

  • Page 39: Flag Pole Bracket

    Flag pole bracket Flag pole bracket Storage compartment To mount a pole in the bracket, follow the To mount a pole in the bracket, follow the The storage compartment is located under the instructions that come with the flag pole kit. instructions that come with the flag pole kit.

  • Page 40: Pre-Operation Checks

    PRE-OPERATION CHECKS Before using this machine, check the following points: ROUTINE PAGE ITEM ～ Check the lever for proper operation. Drive select lever 32 35 Check operation, condition, and brake fluid level. ～ ～ 35 36, 115 119 Brake Fill with DOT 4 brake fluid if necessary. Check fuel level.

  • Page 41: Drive Select Lever

    Drive select lever WARNING CAUTION: POTENTIAL HAZARD Before shifting, you must stop the machine Failure to inspect the ATV before operating. and return the throttle lever to its closed Failure to properly maintain the ATV. position until the engine speed to the specified idling speed.
  • Page 42 WARNING POTENTIAL HAZARD Operating with improperly adjusted drive select lever. WHAT CAN HAPPEN You may lose control of the gear shifting, which lead to accident. HOW TO AVOID THE HAZARD Make sure moving the shift lever into the "N" position and neutral indicator lamp comes on before start the engine.
  • Page 43 Drive select lever adjustment ． Turn the ignition switch is ON " " and make sure the engine stop switch in the OFF " " position. Loosen the locknuts of rod. Shift the gear to neutral by moving the shift lever and/or turn the rod.

  • Page 44: Front And Rear Brakes

    Front and rear brakes Make sure there is no brake fluid leakage. Check operation of the levers. They should move smoothly and there should be a firm feeling when the brake is applied. If not, have the machine inspected by a KYMCO dealer. Brake operation Test the brakes at slow speed after starting out to make sure they are working properly.

  • Page 45: Fuel

    Fuel WARNING Fill the fuel tank when necessary and make sure POTENTIAL HAZARD there is sufficient gasoline in the tank. Riding with improperly operating brakes. Check for leaks. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride.
  • Page 46 Your KYMCO engine has been designed to use WARNING regular unleaded gasoline with a pump octane POTENTIAL HAZARD number of 86 or higher, or research octane Improper care when refueling. number of 91 or higher. If knocking or pinging occurs, use a different brand of gasoline or WHAT CAN HAPPEN premium unleaded fuel.

  • Page 47: Engine And Transmission Oil

    Engine and transmission oil CAUTION: Make sure the engine and transmission oil at the Be sure to use motor oils that do not specified level. Add oil as necessary. (See page contain anti-friction modifiers. Passenger 101~106.) car motor oils (often labeled "Energy Check for leaks.

  • Page 48: Chain

    Chain Lights Check the general condition of the chain and Check the headlight and taillight to make sure check the chain slack before every ride. they are in working condition. Repair as necessary for proper operation. Lubricate and adjust the chain as necessary. (See pages 122~124 for details.) Switches Throttle lever...

  • Page 49: Tires

    HOW TO AVOID THE HAZARD specified could cause the tire to dislodge 1.The tires listed below have been from the rim under severe riding approved by Kwang Yang Motor Co., Ltd. conditions. for this model. Other tire combinations The following are minimums: are not recommended.

  • Page 50: How To Measure Tire Pressure

    Set pressure tires cold. 4.Higher pressures may cause the tire to Set tire pressures to the following burst. Inflate the tires very slowly and carefully. Fast inflation could cause the tire to burst. Recommended Minimum Maximum pressure 25 kpa 28 kpa 32 kpa Front (0.25 kgf/cm,...

  • Page 51: Tire Wear Limit

    Coolant Tire wear limit Check the coolant level in the reservoir tank When the tire groove decreases to 3 mm (0.12 when the engine is cold. (The coolant level in) due to wear, replace the tire. will vary with engine temperature.) The coolant level is satisfactory if it is between the "FULL"...
  • Page 52 WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and steam blown out under pressure. HOW TO AVOID THE HAZARD (1) Coolant reservoir cap Wait for the engine to cool before removing (2) Maximum level mark the radiator cap.

  • Page 53: Operation

    OPERATION Starting a cold engine WARNING WARNING POTENTIAL HAZARD Operating ATV without being familiar with POTENTIAL HAZARD all controls. Freezing control cables in cold weather. WHAT CAN HAPPEN WHAT CAN HAPPEN Loss of control, which could cause an You could be unable to control the ATV, accident or injury.
  • Page 54 NOTE: The engine can be started only when the drive select lever is in neutral. When the select lever is in neutral, the neutral indicator light should come on. If the light does not come on, ask a KYMCO dealer to inspect it.

  • Page 55: Starting A Warm Engine

    NOTE: CAUTION: If the engine fails to start, release the start See the "engine break-in section prior to switch, then push the start switch again. Each operating engine for the first time. cranking should be as short as possible to preserve battery energy.

  • Page 56: Drive Select Lever Operation And Reverse Driving

    Drive select lever operation and reverse driving CAUTION: Before shifting, you must stop the machine and return the throttle lever to its closed position until the engine speed to the specified idling speed. Otherwise, the transmission may be damaged. (1) Drive select lever (N) Neutral 1.Shifting : forward (F) Forward...
  • Page 57 2.Shifting: reverse A. Bring the machine to a complete stop and NOTE: return the throttle lever to the closed If the drive select lever is shifted into reverse position. while the engine is running, the engine will B. Apply the parking brake. stop unless the parking brake is applied.

  • Page 58: Engine Break-In

    Each full throttle acceleration sequence should Engine break-in be followed with a substantial rest period for the There is never a more important period in the life engine by cruising at lower r/min so the engine of your machine than the period between zero can rid itself of the temporary build up of heat.
  • Page 59 2. 10~20 hours: Avoid prolonged operation above 3/4 throttle. Rev the machine freely through the gears but do not use full throttle at any time. 3. After break-in Avoid prolonged full throttle operation. Vary speeds occasionally.

  • Page 60: Parking

    Parking When parking, stop the engine and shift into neutral. Turn the fuel lock to "OFF" and apply the parking brake. The front brake lever has two locked position that allow it to be used as a parking brake. To set the parking brake, see page 25. (1) Locked position (1) Certainly locked position (2) Lock lever...

  • Page 61: Parking On A Slope

    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, apply the rear parking brake. Parking on a hill or other incline. 3.

  • Page 62: Loading

    Loading Tie down cargo securely to the carriers. Make sure cargo in the trailer cannot move around. As originally equipped, this ATV is not designed to carry cargo or tow a trailer. If you choose to A shifting load can cause an accident. add accessories so that you can carry cargo or Make sure the load does not interfere with tow a trailer, you must use common sense and...

  • Page 63: Accessories

    Accessories WARNING Accessories can affect the handling and control POTENTIAL HAZARD of your ATV. Keep the following in mind when Overloading this ATV or carrying or towing considering an accessory or operating an ATV cargo improperly. which has accessories. Choose only accessories designed for your WHAT CAN HAPPEN ATV.
  • Page 64 Do not mount an accessory where it could interfere with your ability your to control the ATV. Examples include (but are not limited to) a heavy or bulky object attached to the handlebars which could make steering difficult, an accessory that limits your ability to move around on the seat, or one that limits your view.

  • Page 65: Riding Your Atv

    Riding Your ATV...

  • Page 66: Getting To Know Your Atv

    GETTING TO KNOW YOUR ATV This ATV is for recreation use. This section, riding your ATV, provides general ATV riding instructions for recreational riding. The skills and techniques described in this section, however, are appropriate for all types of riding. Riding your ATV requires special skills acquired through practice over a period of time.

  • Page 67: Ride With Care And Good

    RIDE WITH CARE AND GOOD JUDGEMENT HOW TO AVOID THE HAZARD Become familiar with this ATV at slow Get training if you are inexperienced. speeds first, even if you are an experienced Beginners and inexperienced riders should get operator. proper instruction on how to operate this ATV. Do not attempt to operate at maximum performance until you are totally familiar with the machine's handling and...
  • Page 68 Not recommended for children under 16 year of age. WARNING POTENTIAL HAZARD Failure to follow the age recommendations for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not recommended for their age can lead to severe injury or death of the child. HOW TO AVOID THE HAZARD A child under 16 should never operate an ATV with engine size greater than 90cc.
  • Page 69 Apparel Operating without protective clothing WARNING increases your chances of severe injury in POTENTIAL HAZARD the event of an accident. Operating this ATV without wearing an approved motorcycle helmet, eye HOW TO AVOID THE HAZARD protection and protective clothing. Always wear an approved motorcycle helmet that fits properly.
  • Page 70 Do not operate after consuming alcohol or WARNING drugs. POTENTIAL HAZARD Operator's performance capability is reduced by Operating this ATV after consuming the influence of alcohol or drugs. alcohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly. Could affect your balance and perception.
  • Page 71 This machine is designed to carry operator 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 72 Pre-operation checks Always perform the pro-operation checks listed on page 31 before riding for safety and proper WARNING care of the machine. POTENTIAL HAZARD Operating this ATV with improper tires, or WARNING with improper or uneven tire pressure. POTENTIAL HAZARD WHAT CAN HAPPEN Failure to inspect the ATV before operating.
  • Page 73 Do not operate at speeds too fast your skills Speed limiter or the conditions. For riders inexperienced with this model, this model is equipped with a speed limiter in the throttle lever housing. The speed limiter limits WARNING the power and top speed of the machine. POTENTIAL HAZARD Turning the screw in decreases top speed, and Operating this ATV at speeds too fast for...
  • Page 74 Loading and a ccessories Loading and Operational Guidelines Load Limits This ATV is not designed to carry or tow a trailer. If you decide to add accessories to allow you to There are limits to how much weight can be carry cargo or tow a trailer, use common sense.
  • Page 75 Accessories WARNING Genuine KYMCO accessories have been specifically designed for and tested on this POTENTIAL HAZARD vehicle. Because KYMCO cannot test all other Overloading this ATV or carrying or towing accessories, you are personally responsible for cargo improperly. properly selecting, installing, and using non- KYMCO accessories.
  • Page 76 Modifications No Modifications Modifying this ATV or removing original WARNING equipment may render the vehicle unsafe or illegal. Spark arresters and mufflers are POTENTIAL HAZARD required in most areas. Don't modify your Operating this ATV with improper exhaust system or emission control system modifications.
  • Page 77 Exhaust system The exhaust on the machine is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the machine in a place where pedestrians or children are not likely to touch it. WARNING POTENTIAL HAZARD Hot exhaust system WHAT CAN HAPPEN Someone touching the exhaust system...

  • Page 78: 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 ATV 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 control.
  • Page 79 Do not ride on any public road, street, or highway. 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 gravel one.
  • Page 80 Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden hazards which may cause the machine to upset. WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain.
  • Page 81 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 accident, 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 necessary...
  • Page 82 When riding in an area where you might not WHAT CAN HAPPEN easily be seen, such as desert terrain, mount a You could be in a collision. You could be caution flag on the machine. DO NOT use the injured. flag pole bracket as a trailer hitch.
  • Page 83 FOR OFF-ROAD USE ONLY This vehicle is designed and manufactured for off-road use only. Do not ride in areas posted "no trespassing". Do not ride on private property without getting permission.
  • Page 84 Select a large, flat area off-road to become With the engine idling, return the starter knob to familiar with your ATV. Make sure that this area the closed position and shift the drive select is free of obstacles and other riders. You should lever into the forward position.
  • Page 85 During operation WARNING Always keep your feet on the footpegs during POTENTIAL HAZARD operation. Otherwise your feet may contact the Removing hands from handlebars or feet rear wheels. from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can reduce your ability to control the ATV or could cause you to lose your balance and fall a footpeg, your foot or leg may come...
  • Page 86 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, including an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps.

  • Page 87: Turning Your Atv

    TURNING YOUR ATV HOW TO AVOID THE HAZARD To achieve maximum traction while riding off- Always follow proper procedures for road, the two rear wheels are mounted solidly turning as described in this Owner's on one axle and turn together at the same Manual.
  • Page 88 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. If the ATV begins to tip over to the outside while negotiating a turn, lean more to the inside.

  • Page 89: Sliding And Skidding

    SLIDING AND SKIDDING If the rear wheels of your ATV start to slide sideways, control can usually be regained (if Care should be used when riding on loose or there is room to do so) by steering in the slippery surfaces since the ATV may slide. If direction of the slide.
  • Page 90 With practice, over a period of time, skill at WARNING controlled sliding can be developed. The terrain POTENTIAL HAZARD should be chosen carefully before attempting Skidding or sliding improperly. such maneuvers, since both stability and control are reduced. Bear in mind that sliding maneuvers should always be avoided on WHAT CAN HAPPEN extremely slippery surfaces such as ice, since...

  • Page 91: Climbing Uphill

    CLIMBING UPHILL WARNING Use proper riding techniques to avoid vehicle POTENTIAL HAZARD overturns on hills. Be sure that you can Operating on excessively steep hills. maneuver your ATV well on flat ground before attempting any incline and then practice riding first on gentle slopes.
  • Page 92 An obstacle, a sharp drop, or another WARNING 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 Owner's Manual.
  • Page 93 If you are climbing a hill and you find that you When crossing the side of a hill: have not properly judged your ability to make it Always follow proper procedures as to the top, you should turn the ATV around while described in the Owner's Manual.
  • Page 94 If your ATV has stalled or stopped and you WARNING believe you can continue up the hill, restart POTENTIAL HAZARD carefully to make sure you do not lift the front Stalling, rolling backwards or improperly wheels which could cause you to lose control. If dismounting while climbing a hill.
  • Page 95 When fully stopped, apply rear brake as well, and then lock parking brake. Dismount on uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the procedure described in the Owner's Manual.
  • Page 96 If the hill is not too steep and you have good footing, you may be able to walk the ATV back down the hill. Make sure your intended path is clear in case you lose control of the ATV . If you decide you can walk the ATV safely: 1.

  • Page 97: Riding Downhill

    RIDING DOWNHILL WARNING When riding your ATV downhill, shift your weight POTENTIAL HAZARD as far to the rear and uphill side of the ATV as Going down a hill improperly. possible. Move back on the seat and sit with your arms straight. Improper braking may cause WHAT CAN HAPPEN a loss of traction.

  • Page 99: Crossing A Slope

    CROSSING A SLOPE WARNING Traversing a sloping surface on your ATV POTENTIAL HAZARD requires you to properly position your weight to Improperly crossing hills or turning on maintain proper balance. Be sure that you have hills. learned the basic riding skills on flat ground before attempting to cross a sloping surface.
  • Page 100 Shift your weight to the uphill side of the ATV.

  • Page 101: 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 upset or accident. Be sure to keep your feet WHAT CAN HAPPEN firmly mounted on the footboards at all time.

  • Page 102: Crossing Through Shallow Water

    CROSSING THROUGH SHALLOW WATER Remember that wet brakes may have The ATV can be used to cross slow moving, reduced stopping ability. Test your brakes shallow water of up to a maximum of 20 cm (7.9 after leaving water. If necessary, apply inches) in depth.
  • Page 103 Test your brakes after leaving the water. Do not PARKING continue to ride your ATV without verifying that Always choose a level place to park. After you have regained proper braking ability. bringing your ATV to a stop, hold the brakes while you shift into neutral.

  • Page 104: What To Do If

    WHAT TO DO IF If your ATV starts to slide sideways: This section is designed to be a reference guide Steer in the direction of the slide if you have the only. Be sure to read each section on riding room.
  • Page 105 If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to maintain proper balance. If the ATV starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance.

  • Page 106: Periodic Maintenance And Adjustment

    Have KYMCO dealer perform service if you PERIODIC MAINTENANCE AND are not familiar with machine service. ADJUSTMENT Periodic inspection, adjustment and lubrication Tool kit will keep your machine in the safest and most A tool kit is provide with your ATV. efficient condition possible.
  • Page 107 The tools in the kit are sufficient to perform WARNING routine maintenance and simple repairs. Any POTENTIAL HAZARD extensive work requiring additional tools should be performed by your authorized KYMCO Operating this ATV with improper dealer. modifications. The tool kit includes the following items: WHAT CAN HAPPEN Air pressure gauge Improper installation of accessories or...

  • Page 108: Periodic Maintenance/Lubrication

    PERIODIC MAINTENANCE/LUBRICATION INITIAL EVERY ITEM ROUTINE year month months months months Replace (Warm engine before draining). Engine oil Clean. Oil strainer* Replace if necessary. Check oil level/oil leakage. Transmission oil Replace every 12 months. Check operation. V-belt* Replace if damage or excessive wear. Air filter element Clean.
  • Page 109 INITIAL EVERY ITEM ROUTINE year month months months months Check valve clearance. Valves* Adjust if necessary. Check leakage. Exhaust system* Retighten if necessary. Replace gasket if necessary. Check coolant leakage. Replace if necessary. Coolant* Replace coolant every 24 months. Check balance/damage/runout. Wheels* Replace if necessary.

  • Page 110: Engine Oil

    Engine oil 1.Engine oil level measurement A. Place the machine on a level place. B. Warm up the engine for several minutes and stop it. C. Check the oil level through the inspection window. D. The oil level should be between the maximum (H) and minimum (L) marks.
  • Page 111 2-1. Engine oil replacement and oil filter cleaning A. Place the machine on a level place. B. Warm up the engine for several minutes and stop it. C. Place a container under the engine. D. Remove the oil fill cap and oil filter cap to drain the oil.
  • Page 112 H. Fill the engine with oil and install the oil fill E. Clean the oil strainer with solvent. cap. F. Inspect the O-ring and replace if damaged. G. Reinstall the O-ring, oil strainer, compression Recommended oil: see page 138 spring and oil filter cap. Tighten the oil filter Oil quantity: cap to specification.
  • Page 113 2-2. Engine oil replacement A. Place the machine on a level place. B. Warm up the engine for several minutes and stop it. C. Place a container under the engine. D. Remove the oil fill cap and drain plug to drain the oil.

  • Page 114: Transmission Oil

    Transmission oil Transmission oil replacement 1. Place the machine on a level place. 2. Place a container under the engine. 3. Remove the oil filler bolt and drain plug to Drain the oil. 4. Reinstall the drain plug and tighten to Specification.
  • Page 115 5. Fill the engine with oil and install the oil filler 6. Start the engine and warm up for a few bolt. minutes. While warming up, check for oil leakage. If oil leakage is found, stop the Recommended oil : See page 138. engine immediately and check for the cause.

  • Page 116: Spark Plug Inspection

    Before installing the spark plug, measure the Spark plug inspection electrode gap with a feeler gauge and adjust to The spark plug is an important engine specification. component and is easy to inspect. The condition of the spark plug can indicate the condition of the engine.

  • Page 117: Air Filter Cleaning

    Air filter cleaning The air cleaner accumulates dust and must be cleaned periodically. If the ATV is ridden in dusty areas, the air cleaner must be cleaned at more frequent intervals than specified in the Maintenance Schedule. If the ATV is submerged in water, the air cleaner should be checked and water should be drained from the air cleaner housing before starting the engine.
  • Page 118 4. Remove the screw and remove the air cleaner assembly from the air cleaner holder. 5. Remove the air cleaner and air cleaner screen from the air cleaner guide. 6. Remove the air cleaner net from the air cleaner. (1) Air cleaner (2) Air cleaner screen (3) Air cleaner guide (1) Screw...
  • Page 119 7. Gently wash the air cleaner in clean, non- 8. Soak the air cleaner an equivalent (gear oil: flammable (high flash point) solvent such as SAE 80 - 90) until saturated, then squeeze out ─ kerosene not gasoline. Allow the air cleaner the excess oil.
  • Page 120 Air cleaner housing drain tube The air cleaner housing drain tube should be serviced in accordance with the Maintenance Schedule. (Riding through water may require more frequent inspection.) If deposits can be seen in the drain tube, the tube must be cleaned before starting the vehicle.
  • Page 121 Filter for V-belt compartment The air filter should be serviced in accordance with the Maintenance Schedule. (Riding through water may require more frequent inspection.) To clean the air filter: 1. Remove the two screws and remove air filter housing. Remove the two screws and remove air filter housing cover.

  • Page 122: Idle Speed Adjustment

    Idle speed adjustment NOTE: A diagnostic tachometer must be used for this procedure. 1. Start the engine and warm it up for a few minutes at approximately 1,000 to 2,000 r/min. Occasionally rev the engine to 4,000 to 5,000 r/min. The engine is warm when it quickly responds to the throttle.

  • Page 123: Throttle Lever Adjustment

    Throttle lever adjustment NOTE: Adjust the engine idling speed before adjusting the throttle lever free play. To adjust throttle free play: 1. Slide the rubber sleeve back to expose the throttle cable adjuster. (2) (3) 2. Loosen the lock nut, then turn the adjuster to obtain the correct free play.

  • Page 124: Valve Clearance Adjustment

    Valve clearance adjustment Front and rear brake pads inspection The correct valve clearance changes with use, (Model code: LA50AA) resulting in improper fuel/air supply or engine A wear indicator is provided on each brake. The noise. To prevent this, the valve clearance must indicators allows checking of brake pads be adjusted regularly.
  • Page 125 (1) Rear brake pads cover (Rear brake lever) (1) Rear brake pads cover (Rear brake pedal) Rear brake pads (Rear brake lever) Rear brake pads (Rear brake pedal) Wear indicator Wear indicator...

  • Page 126: (Model Code: La50Ab)

    Front and rear brake pads inspection (Model code: LA50AB) A wear indicator is provided on each brake. The indicators allows checking of brake pads wear.Check the position of the indicator. If the indicator reaches the wear limit line, ask a KYMCO dealer to replace the pads.

  • Page 127: Brake Fluid Inspection

    Brake fluid inspection Check if the fluid level is below the lower level mark through the inspection window. WARNING POTENTIAL HAZARD Brake fluid contacting the skink or eyes. WHAT CAN HAPPEN May cause irritation. (1) Lower level mark (Hand Brake lever) HOW TO AVOID THE HAZARD Avoid contacting brake fluid with the skin or eyes.
  • Page 128 NOTE: CAUTION: As the brake pads wear, brake fluid level To prevent damage to the brake system, use drops, automatically compensating for wear. only fluid from a sealed container. Never There are no adjustments to perform, but allow contaminants (dirt, water, etc.) to enter fluid level and pad wear must be inspected the brake fluid reservoir.

  • Page 129: Cooling System Inspection

    Cooling system inspection 1. Check the coolant level in the coolant reservoir when the engine is cold as the coolant level will vary with engine temperature. The coolant level should be between the maximum and minimum marks. 2. If the level is low, remove the coolant reservoir cap, and then add coolant or distilled water to raise it to the specified level.
  • Page 130 Engine overheating WARNING If your ATV overheat, wait until the engine has POTENTIAL HAZARD cooled. Removing the radiator cap when the engine Check the coolant level in the reservoir tank and radiator are still hot. and/or radiator. WHAT CAN HAPPEN You could be burned by hot fluid and steam Level is low, check the cooling Level is OK.

  • Page 131: Drive Chain Slack Check

    Drive chain slack check Drive chain slack adjustment: Inspect the drive chain while all tires are 1. Loosen the hub stopper bolt and two axle hub touching the ground. Check the slack at the holding bolt. position shown in the figure. The normal vertical deflection is approximately 30~40 mm (1.18~1.6in).
  • Page 132 2. Provide standard/phillips screwdriver (tool kit) and pass the standard/phillips screwdriver through the axle hub and driven sprocket holder holes. 3. To tighten the chain, push the ATV forward. To loosen the chain, pull the ATV backward. 4. Retighten the two axle hub holder bolt and hub stopper bolt to the specification.

  • Page 133: Drive Chain Cleaning And Lubrication

    Drive chain cleaning and lubrication Rear swing arm lubrication The drive chain is equipped with rubber O-rings Lubricate the pivot points using a grease gun. between the chain plates. Steam cleaning, high- pressure washes, and certain solvents can damage these O-rings. Use only kerosene to clean the drive chain.

  • Page 134: Draining The V-Belt Compartment

    Cable inspection and lubrication Draining the V-belt compartment If water leaks into V-belt compartment such as WARNING when the machine is drive in water, remove the POTENTIAL HAZARD drain screw on the bottom of compartment and Damaged control cables. drain the water. Be sure to drive slowly until the V-belt becomes dry.

  • Page 135: Wheel Removal

    Wheel removal Be sure the tapered side of the wheel nuts face 1. Elevate the wheel by placing a suitable stand the wheel rim. under the frame. 2. Remove the nuts from the wheel. 3. Remove the wheel assembly. (1) Wheel nut (2) Wheel rim WARNING (1) Safe nut...

  • Page 136: Battery

    Battery WARNING Your ATV battery is located in a compartment under POTENTIAL HAZARD the seat. The battery is sealed, so it is not necessary Allowing open flames or sparks near the to check the electrolyte level or add distilled water. If battery.
  • Page 137 Battery remove 1. Make sure the ignition switch is OFF. 2. Remove the seat (page 29) 3. Remove the battery holder, by removing the mount bolts. 4. Disconnect the negative (-) terminal lead from the battery first, then disconnect the positive (+) terminal lead.

  • Page 138: Fuse Replacement

    Fuse replacement 2. Remove the seat (page 29) The fuse box stored in the battery compartment 3. Open the fuse box cap. under the seat. The fuse box contains a spare 4. Pull the old fuse out of the fuse holder. fuse.

  • Page 139: Headlight Beam Adjustment

    Headlight beam adjustment Spark arrester cleaning (see page 147~148) CAUTION: It is advisable to have a KYMCO dealer make this adjustment. Vertical adjustment: Turn the ignition switch ON and start the engine. Turn on the headlight switch. Adjust the headlight aim by turning the headlight aim adjusting screw.

  • Page 140: Troubleshooting

    Troubleshooting WARNING Although KYMCO machines receive a rigid POTENTIAL HAZARD inspection before shipment from the factory, Checking the fuel system while smoking or trouble may occur during operation. Any near an open flame. systems can cause poor starting and loss of power.

  • Page 141: Troubleshooting Chart

    Troubleshooting chart Water or dirt Clean filter element and fuel tank. mixed in fuel. 1. Fuel No fuel. Supply fuel. Turn the fuel Check if there is Check fuel flow. Turn the fuel valve to Restart engine. fuel in the fuel Some fuel.

  • Page 142: Cleaning And Storage

    CLEANING AND STORAGE CAUTION: Excessive water pressure may cause water A. CLEANING 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 the bills have resulted from improper high useful life of many components.
  • Page 143 7. Clean the seat with a vinyl upholstery WARNING cleaner to keep the cover pliable and POTENTIAL HAZARD glossy. Operation with wet brakes after washing. 8. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid WHAT CAN HAPPEN combination cleaner-waxes.

  • Page 144: Storage

    B. STORAGE WARNING Before storing your ATV for an extended time, be POTENTIAL HAZARD sure you thoroughly check the vehicle for Refueling this ATV or handling fuel needed repairs and have them corrected. improperly. Otherwise, the repairs may be forgotten by the time you remove the vehicle from storage.
  • Page 145 4. Remove the battery (page 128) And store it in WARNING an area protected from freezing temperatures POTENTIAL HAZARD and direct sunlight and out of the reach of Prolonged contact of fuel with the skin. children, slow charge the battery once a Breathing fuel vapor.

  • Page 146: Specifications

    SPECIFICATIONS Mongoose 250 Model Dimension: Overall length 1700 mm (66.9 in) Overall width 1070 mm (42.1 in) Overall height 1080 mm (42.5 in) Seat height 800 mm (31.5 in) Wheel base 1180 mm (46.5 in) Minimum ground clearance 130 mm (5.1 in) Minimum turning radius 2865 mm (112.8 in)
  • Page 147 Mongoose 250 Model 110 F Engine oil/transmission oil: Type SAE 5W － SAE 10W 30 Recommended engine oil classification: － SAE 10W 40 － SAE 20W 40 － SAE 20W 50 -1 0 40 C API Service SE, SF, SG type or higher...
  • Page 148 Mongoose 250 Model Air filter: for engine Wet type element for V-belt compartment Dry type element Fuel: Type UNLEADED FUEL Tank capacity 13 L (2.78 lmp gal, 3.34 US gal) Reserve amount 1.8 L (0.4 lmp gal, 0.47 US gal)
  • Page 149 Mongoose 250 Model Suspension: Front Swing axle Rear Swing arm Shock absorber: Front Coil spring/Oil damper Rear Coil spring/Oil damper Electrical: Ignition system C.D.I. Generator system C.D.I. Magneto Battery type 12V, 12AH Tire: Type Tubeless Size: Front 21X7-10 Rear 20X11-9...

  • Page 150: Noise Regulation

    NOISE REGULATION TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device 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 151: Maintenance Record

    MAINTENANCE RECORD Copies of work orders and/or receipts for parts you purchase and install will be required to document maintenance done in accordance with the warranty. The chart below is printed only as a reminder to you that the maintenance work is required. It is not acceptable proof of maintenance work.

  • Page 152: Index

    INDEX Page Page Accessories........54, 66 Cable inspection and lubrication....125 AGE RECOMMENDATION......A Chain............39 Air filter cleaning ........108 Choke............. 28 Air cleaner housing drain tube....111 CLEANING..........133 Apparel ...........60 CLIMBING UPHILL........82 CONTENTS..........D CONTROL FUNCTIONS......17 Battery...........127 Coolant........... 42 Brake fluid inspection......118 Coolant temperature warning lamp.....19 Cooling system inspection.......120 CROSSING A SLOPE........90...
  • Page 153 Page Page Draining the V-belt compartment....125 Filter for V-belt compartment....112 Drive chain cleaning and lubrication ..124 Fittings and fasteners....... 39 Drive chain slack adjustment....122 Flag pole bracket........30 Drive chain slack check ......122 Frame and engine serial number ....12 Drive select lever ........
  • Page 154 Page Page Idle speed adjustment ......113 Neutral indicator lamp.......18 Ignition switch..........17 No Modifications........67 IMPORTANT NOTICES......A Indicator lamps........18 OPERATION ........... 44 Key identification number ......11 PARKING .......... 51, 94 Parking brake...........25 Lights............39 Parking on a slope ........52 Load Limits ..........
  • Page 155 Page Page Throttle lever........22, 39 Rear brake..........24 Throttle lever adjustment......114 Rear swing arm lubrication...... 124 Tires............40 RIDING DOWNHILL........88 Tire wear limit.......... 42 RIDING OVER ROUGH TERRAIN ..... 92 Tool kit.............97 Riding Your ATV........56 Transmission oil ........105 Troubleshooting ........131 SAFETY INFORMATION......5 Troubleshooting chart ......
  • Page 156 Spark arrester cleaning 2. Remove the tailpipe by pulling it out of the muffler. Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 3. Tap the tailpipe lightly, then use a wire brush to remove any carbon deposits from the spark 1.
  • Page 157 WARNING POTENTIAL HAZARD Improper cleaning of the spark arrester. WHAT CAN HAPPEN Could injure the eyes. Could cause burns. Could cause carbon monoxide poisoning, possibly leading to death. Could start a fire. HOW TO AVOID THE HAZARD When cleaning the spark arrester: Always let the exhaust system cool prior to touching exhaust components.
  • Page 158 NO.35 Wan Hsing Street, San Min District Kaohsiung, Taiwan, Republic of China Telephone : 886-7-3822526 FAX : 886-7-3950021 By KWANG YANG Motor Co., Ltd. First Edition, Jul 2003 All rights reserved. Any reproduction or unauthorized use without the written permission of KWANG YANG Motor Co., Ltd.
  • Page 160 WARNING Improper ATV use can result in SEVERE INJURY or DEATH. ALWAYS USE AN NEVER USE NEVER CARRY NEVER USE APPROVED HELMET ON PUBLIC PASSENGERS WITH DRUGS AND PROTECTIVE ROADS OR ALCOHOL GEAR NEVER operate : Without proper training or instruction. At speeds too fast for your skills or the conditions.

Table of Contents

Save PDF