Page 1
Read this manual carefully before operating this vehicle. OWNER’S MANUAL MTN850D B6C-28199-E0...
Page 2
EAU81570 Declaration of Conformity: Hereby, YAMAHA MOTOR ELECTRONICS Co., Ltd declares that the radio equipment type, IMMOBILIZER, 1RC-00 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: https://global.yamaha-motor.com/eu_doc/...
Page 3
EAU10103 Welcome to the Yamaha world of motorcycling! As the owner of the MTN850D, you are benefiting from Yamaha’s vast experience and newest technology regarding the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.
Page 4
Important manual information EAU10134 Particularly important information is distinguished in this manual by the following notations: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
Table of contents Safety information......1-1 Adjusting the shock absorber Engine oil ........7-11 assembly........4-23 Coolant ......... 7-14 Description ........2-1 Luggage strap holders ....4-25 Air filter element......7-15 Left view ......... 2-1 Auxiliary DC connectors ....4-25 Checking the engine idling Right view........
Page 7
Table of contents Checking and lubricating the sidestand ........7-27 Lubricating the swingarm pivots ...7-28 Checking the front fork....7-28 Checking the steering ....7-29 Checking the wheel bearings ..7-29 Battery ...........7-29 Replacing the fuses.......7-31 Vehicle lights .........7-33 Replacing a turn signal light bulb ..........7-34 Supporting the motorcycle....7-34 Troubleshooting ......7-35...
Safety information Never operate a motorcycle with- pears to be very effective in reduc- EAU1028C out proper training or instruction. ing the chance of this type of Take a training course. Beginners accident. Be a Responsible Owner should receive training from a cer- Therefore: As the vehicle’s owner, you are re- tified instructor.
Page 9
Safety information Many accidents involve inexperi- • Always signal before turning or Protective Apparel enced operators. In fact, many op- changing lanes. Make sure that The majority of fatalities from motorcy- erators who have been involved in other motorists can see you. cle accidents are the result of head in- ...
Page 10
Safety information Do not run engine outdoors where Avoid Carbon Monoxide Poisoning When loading within this weight limit, All engine exhaust contains carbon engine exhaust can be drawn into keep the following in mind: Cargo and accessory weight monoxide, a deadly gas.
Page 11
Yamaha accessories, which are avail- performed to your vehicle that change lightweight as possible and able only from a Yamaha dealer, have any of the vehicle’s design or operation should be kept to a minimum. been designed, tested, and approved characteristics can put you and others •...
Page 12
Safety information Remove all loose items from the operator and may limit control ability, therefore, such accesso- motorcycle. Check that the fuel cock (if ries are not recommended. Use caution when adding electri- equipped) is in the off position and cal accessories.
Special features Mode “B” EAU76422 D-mode (drive mode) Mode “B” offers response that is Make sure you understand each D-mode is an electronically controlled somewhat less sharp compared to drive mode before operating the engine performance system. This mode “STD” for riding situations that drive mode switch.
Special features When the key is turned to “ON”, Setting the traction control system EAU76434 Traction control system traction control is turned on and The traction control system (TCS) set to “1” or “2” (whichever was helps maintain traction when acceler- last selected).
Page 18
excessive rear wheel spin is de- tected while riding. 4. Have a Yamaha dealer check the either wheel is rotated with the key vehicle and turn off the “ ” turned to “ON” (such as when per- warning light.
Special features EAU76401 Quick shift system The quick shift system (QS) allows for full-throttle, clutch lever-less, electron- ically-assisted upshifts. When the shift switch detects motion in the shift pedal (page 4-14), engine power and drive torque are momentarily adjusted to al- low the upshift to occur.
Do not expose any key to exces- cess, take the vehicle along with all three keys to a Yamaha dealer to have sively high temperatures. Do not place any key close to them re-registered. Do not use the key with the red bow for driving.
Instrument and control functions Keep other immobilizer system EAU10474 EAU36872 Main switch/steering lock keys away from the main switch All electrical circuits are supplied with as they may cause signal inter- power. The meter lighting, taillight, li- ference. cense plate light and auxiliary lights come on, and the engine can be start- ed.
Page 22
Instrument and control functions EAU1068B ECA20760 LOCK NOTICE The steering is locked and all electrical If the steering will not lock, try turning Using the hazard or turn signal lights systems are off. The key can be re- the handlebars back to the right slight- for an extended length of time may moved.
Instrument and control functions Right EAU66055 EAU66040 Handlebar switches Turn signal switch “ ” To signal a right-hand turn, push this Left switch to “ ”. To signal a left-hand turn, push this switch to “ ”. When released, the switch returns to the cen- ter position.
10.Right turn signal indicator light “ ” 11.Immobilizer system indicator light “ ” confirming that the oil level is correct (see page 7-11), have a Yamaha dealer EAU11032 check the vehicle. Turn signal indicator lights “ ” and “...
Page 25
The ABS may not work correctly. If any vehicle control system. If this occurs, gine to cool. of the above occurs, have a Yamaha have a Yamaha dealer check the on- The electrical circuit of the warning dealer check the system as soon as board diagnostic system.
Page 26
3 keys to a Yamaha If the indicator light does not come on circuit check, or if the light remains on, dealer to have the standard keys initially when the key is turned to “ON”,...
Instrument and control functions a speedometer EAU83381 Multi-function meter unit a tachometer a clock a fuel meter an eco indicator a transmission gear display a drive mode display a TCS display a multi-function display ...
Page 28
Instrument and control functions Speedometer The tachometer allows the rider to 3. When the hour digits start flash- monitor the engine speed and keep it ing, use the “RESET” button to set within the ideal power range. the hours. ECA23050 4.
Page 29
Drive mode display ments and “ ” will flash repeat- Consider the following to reduce fuel edly. If this occurs, have a Yamaha consumption: dealer check vehicle. avoid high engine speeds during acceleration ...
Page 30
Instrument and control functions The tripmeters will lock at 9999.9 This display indicates which drive Multi-function display mode has been selected: “STD”, “A” or but can be manually reset. “B”. (See page 3-1.) Setting the display item TCS display Push the “SELECT”...
Page 31
Instrument and control functions “AVE_ _._ L/100 km”: The average Instant fuel consumption amount of fuel necessary to travel When traveling under 20 km/h (12 100 km is shown. mi/h), “_ _._” is displayed. “AVE_ _._ MPG”: The average dis- tance that can be traveled on Average fuel consumption 1.0 Imp.gal of fuel is shown.
Page 32
Instrument and control functions This display shows the coolant tem- The display shows the temperature of 2. While pushing the “SELECT” but- perature from 40 °C to 116 °C in 1 °C the air drawn into the air filter case from ton, turn the key to “ON”...
Instrument and control functions EAU12822 EAU76301 EAU26826 Clutch lever Shift pedal Brake lever The brake lever is located on the right side of the handlebar. To apply the front brake, pull the lever toward the throttle grip. 1. Clutch lever 1.
EAU12944 EAU63040 Brake pedal The ABS performs a self-diagno- The Yamaha ABS (Anti-lock Brake sis test each time the vehicle first System) features a dual electronic con- starts off after the key is turned to trol system, which acts on the front and “ON”...
Instrument and control functions EAU13076 Fuel tank cap The fuel tank cap cannot be closed un- less the key is in the lock. In addition, the key cannot be removed if the cap is not properly closed and locked. EWA11092 WARNING Make sure that the fuel tank cap is properly closed after filling fuel.
Instrument and control functions ately. If gasoline spills on your skin, EAU13222 Fuel wash with soap and water. If gaso- Make sure there is sufficient gasoline in line spills on your clothing, change the tank. your clothes. EWA10882 WARNING EAU75300 Gasoline and gasoline vapors are extremely flammable.
Confirm the overflow hose is not blocked and is routed through the Your Yamaha engine has been de- clamp. signed to use premium unleaded gas- oline with a research octane number of 95 or higher.
Instrument and control functions EAU13434 ECA10702 EAU57991 Catalytic converter Seat NOTICE This model is equipped with a catalytic Use only unleaded gasoline. The use converter in the exhaust system. To remove the seat of leaded gasoline will cause unre- 1. Open the seat lock cover, insert EWA10863 pairable damage to the catalytic WARNING...
Instrument and control functions EAU77030 EAU70521 Storage compartment Adjusting the front fork EWA10181 WARNING Always adjust both fork legs equally, otherwise poor handling and loss of stability may result. This front fork is equipped with spring preload adjusting bolts, rebound damping force adjusting screws, com- 1.
Page 40
Instrument and control functions Spring preload setting: Rebound damping setting: Minimum (soft): Minimum (soft): Distance A = 19.0 mm (0.75 in) 26 click(s) in direction (b)* Standard: Standard: Distance A = 18.0 mm (0.71 in) 17 click(s) in direction (b)* Maximum (hard): Maximum (hard): Distance A = 4.0 mm (0.16 in)
Page 41
Instrument and control functions force and thereby soften the compres- above specifications due to small dif- sion damping, turn the adjusting bolt ferences in production, the actual on each fork leg in direction (b). number of clicks or turns always repre- sents the entire adjusting range.
Instrument and control functions EAU83550 Spring preload setting: Adjusting the shock absorber Minimum (soft): assembly Distance A = 156.0 mm (6.14 in) This shock absorber assembly is Standard: Distance A = 156.0 mm (6.14 in) equipped with a spring preload adjust- Maximum (hard): ing knob and rebound and compres- Distance A = 148.0 mm (5.83 in)
Page 43
Take the shock pression damping, turn the adjusting number of clicks or turns of each absorber assembly to a Yamaha knob in direction (a). To decrease the damping force adjusting mechanism. dealer for any service.
The sidestand is located on the left iary DC connector and a grip warmer side of the frame. Raise the sidestand DC connector. Consult your Yamaha or lower it with your foot while holding dealer before installing any accesso- the vehicle upright.
Instrument and control functions this system regularly and have a EAU57952 Ignition circuit cut-off system Yamaha dealer repair it if it does not This system prevents in-gear engine function properly. starts unless the clutch lever is pulled and the sidestand is up. Also, it will...
Page 46
The neutral switch may not be working. 6. Move the sidestand up. The motorcycle should not be ridden until 7. Pull the clutch lever. checked by a Yamaha dealer. 8. Shift transmission into gear. 9. Move the sidestand down. Does the engine stall? The sidestand switch may not be working.
• If necessary, add recommended coolant to specified level. 7-14 Coolant • Check cooling system for leakage. • Check operation. • If soft or spongy, have Yamaha dealer bleed hydraulic system. • Check brake pads for wear. Front brake • Replace if necessary. 7-21, 7-21 •...
Page 48
• Make sure that operation is smooth. • Check throttle grip free play. 7-16, 7-26 Throttle grip • If necessary, have Yamaha dealer adjust throttle grip free play and lubricate ca- ble and grip housing. • Make sure that operation is smooth. Control cables 7-25 •...
Page 49
• Tighten if necessary. Instruments, lights, signals • Check operation. — and switches • Correct if necessary. • Check operation of ignition circuit cut-off system. Sidestand switch 4-25 • If system is not working correctly, have Yamaha dealer check vehicle.
a lean angle sensor to stop the en- The transmission is in the neutral understand, ask your Yamaha dealer. gine in case of a turnover. In this EWA10272 position.
2. Shift the transmission into the the illustration. neutral position. The neutral indi- cator light should come on. If not, ask a Yamaha dealer to check the To shift the transmission into the electrical circuit. neutral position ( ), press the 3.
Operation and important riding points ECA23990 EAU16811 EAU16842 Tips for reducing fuel con- Engine break-in NOTICE sumption There is never a more important period Even with the transmission in in the life of your engine than the period Fuel consumption depends largely on the neutral position, do not between 0 and 1600 km (1000 mi).
Yamaha dealer check the vehi- Do not park on a slope or on soft cle. ground, otherwise the vehicle may overturn, increasing the risk of a fuel leak and fire.
To avoid possible burns, let tivities incorrectly may increase brake components cool before your risk of injury or death during touching them. service or while using the vehicle. If you are not familiar with vehicle ser- vice, have a Yamaha dealer perform service.
However, a torque wrench and other tools are necessary to perform certain maintenance work correctly. If you do not have the tools or experi- ence required for a particular job, have your Yamaha dealer perform it for you.
EAU71032 Periodic maintenance charts Items marked with an asterisk should be performed by your Yamaha dealer because these items require special tools, data, and technical skills. From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
Page 57
Periodic maintenance and adjustment ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 10000 km 20000 km 30000 km 40000 km CHECK (600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi) • Check the air cut-off valve, reed Air induction sys- valve, and hose for damage.
• Perform dynamic inspection us- Diagnostic system √ √ √ √ √ √ ing Yamaha diagnostic tool. check • Check the error codes. 2 * Air filter element • Replace. Every 40000 km (24000 mi) • Check operation. √ √...
Page 59
Periodic maintenance and adjustment ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 10000 km 20000 km 30000 km 40000 km CHECK (600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi) • Check operation and for exces- √ √...
Page 60
Periodic maintenance and adjustment ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 10000 km 20000 km 30000 km 40000 km CHECK (600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi) • Check operation and replace if √ √...
Page 61
Periodic maintenance and adjustment ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 10000 km 20000 km 30000 km 40000 km CHECK (600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi) • Check operation and free play. • Adjust the throttle cable free play Throttle grip hous- √...
Periodic maintenance and adjustment 2. Pull the panel off as shown. EAU18752 Removing and installing the panel The panel shown needs to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time the panel needs to be removed and installed.
Before installing a spark plug, the checked periodically, preferably by a spark plug gap should be measured Yamaha dealer. Since heat and depos- with a wire thickness gauge and, if its will cause any spark plug to slowly necessary, adjusted to specification.
Periodic maintenance and adjustment EAU36112 EAU1990D Canister Engine oil If a torque wrench is not available The engine oil level should be checked when installing a spark plug, a good regularly. In addition, the oil must be estimate of the correct torque is 1/4– changed and the oil filter cartridge re- 1/2 turn past finger tight.
Page 65
Periodic maintenance and adjustment To check the engine oil level 4. If the engine oil is at or below the 1. After warming up the engine, wait minimum level mark, remove the a few minutes for the oil to settle. oil filler cap and add oil.
Page 66
7. Install the engine oil drain bolt with correct, immediately turn the engine a new gasket, and then tighten the off and have a Yamaha dealer check 1. O-ring bolt to the specified torque. the vehicle.
2. Maximum level mark soft tap water instead. Do not 3. Minimum level mark If genuine Yamaha coolant is not avail- use hard water or salt water 3. If the coolant is at or below the since it is harmful to the engine.
The coolant must be changed at the in- maintenance and lubrication chart. necessary, have it corrected by a tervals specified in the periodic main- Have a Yamaha dealer replace the air Yamaha dealer. tenance and lubrication chart. Have a filter element.
3.0–5.0 mm (0.12–0.20 in) proper tire pressure may cause se- Periodically check the throttle grip free vere injury or death from loss of play and, if necessary, have a Yamaha control. The tire air pressure must be dealer adjust it.
Page 70
* Total weight of rider, passenger, car- or glass fragments in it, or if the side- surface must first be “broken go and accessories wall is cracked, have a Yamaha dealer in” for it to develop its optimal replace the tire immediately. characteristics.
Page 71
1. Tire air valve ed below have been approved for this atively poor grip on certain road 2. Tire air valve core model by Yamaha. surfaces until they have been 3. Tire air valve cap with seal “broken in”. Therefore, it is ad-...
Measure the clutch lever free play as clutch does not operate correctly, have note the following points regarding the shown. a Yamaha dealer check the internal specified wheels. The clutch mechanism. wheel...
Yamaha dealer. 1. No brake lever free play There should be no free play at the brake lever end. If there is free play, have a Yamaha dealer inspect the brake system. EWA14212 WARNING A soft or spongy feeling in the brake lever can indicate the presence of air in the hydraulic system.
EAU22393 EAU40262 Checking the front and rear Checking the brake fluid level Yamaha dealer replace the brake pads brake pads Before riding, check that the brake fluid as a set. is above the minimum level mark.
Page 75
Periodic maintenance and adjustment Use only the specified brake flu- Rear brake fluid level goes down suddenly, have a Yamaha dealer check the cause before id; otherwise, the rubber seals may deteriorate, causing leak- further riding. age. Refill with the same type of brake fluid.
Drive chain slack: Changing the brake fluid Drive chain slack 5.0–15.0 mm (0.20–0.59 in) Have a Yamaha dealer change the The drive chain slack should be brake fluid every 2 years. In addition, checked before each ride and adjusted 4. If the drive chain slack is incorrect, have the seals of the master cylinders if necessary.
Page 77
Periodic maintenance and adjustment 1. Axle nut 1. Drive chain slack adjusting bolt 1. Notch 2. Locknut 2. Alignment marks 3. Drive chain puller 2. To tighten the drive chain, turn the Using the alignment marks and notch 3. Tighten the axle nut, then the lock- drive chain slack adjusting bolt on on each side of the swingarm, make nuts to their specified torques.
If a cable is wet areas. Service the drive chain as damaged or does not move smoothly, follows. have a Yamaha dealer check or re- place it. WARNING! Damage to the ECA10584 NOTICE outer housing of cables may result...
In pedals should be checked before each addition, the cable should be lubricat- ride, and the pedal pivots should be lu- ed by a Yamaha dealer at the intervals bricated if necessary. specified in the periodic maintenance Brake pedal chart.
EWA10732 Clutch lever WARNING If the sidestand does not move up and down smoothly, have a Yamaha dealer check or repair it. Otherwise, the sidestand could contact the ground and distract the operator, re- sulting in a possible loss of control.
The swingarm pivots must be lubricat- face and hold it in an upright posi- fork does not operate smoothly, ed by a Yamaha dealer at the intervals tion. WARNING! To avoid injury, have a Yamaha dealer check or re- specified in the periodic maintenance securely support the vehicle so pair it.
If any free This model is equipped with a VRLA smoothly, have a Yamaha dealer play can be felt, have a Yamaha (Valve Regulated Lead Acid) battery. check the wheel bearings. dealer check or repair the steer- There is no need to check the electro- ing.
Page 83
To charge the battery 3. Fully charge the battery before in- stallation. NOTICE: When install- Have a Yamaha dealer charge the bat- tery as soon as possible if it seems to ing the battery, be sure to turn have discharged. Keep in mind that the...
Periodic maintenance and adjustment EAU76770 Replacing the fuses Fuse box 1 is located behind panel A. (See page 7-9.) 1. Ignition fuse 1. Fuse box 2 2. ABS control unit fuse 2. Main fuse 3. Auxiliary fuse 1 3. Fuel injection system fuse 4.
Page 85
Periodic maintenance and adjustment Specified fuses: Main fuse: 50.0 A Auxiliary fuse 1: 2.0 A Terminal fuse 1: 2.0 A Headlight fuse: 10.0 A Signaling system fuse: 7.5 A 1. Radiator fan motor fuse 1. Starter relay cover Ignition fuse: 2.
Except for the turn signal lights, this model is equipped with full-LED light- ing. If a light does not come on, check the fuses and then have a Yamaha dealer check the vehicle. If a turn signal light does not come, check and replace the bulb.
Periodic maintenance and adjustment EAU24205 EAU67131 Replacing a turn signal light Supporting the motorcycle bulb 1. Remove the turn signal light lens by removing the screw. 1. Turn signal light bulb 3. Insert a new bulb into the socket, 1. Maintenance stand (example) push it in, and then turn it clock- Since this model is not equipped with a wise until it stops.
The following troubleshooting charts represent quick and easy procedures for checking these vital systems your- self. However, should your motorcycle require any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, experience, and know-how to service the motorcycle properly.
Remove the spark plugs and check the electrodes. The engine does not start. Have a Yamaha dealer check the vehicle. Check the compression. 4. Compression The engine does not start. There is compression.
Page 90
Start the engine. If the engine overheats again, have a The coolant level Yamaha dealer check and repair the cooling system. is OK. If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool- ant as soon as possible.
Some models are equipped with matte colored finished parts. Be ble. Rust and corrosion can develop Cleaning sure to consult a Yamaha dealer for even if high-quality components are ECA10773 NOTICE used. A rusty exhaust pipe may go un-...
Page 92
Motorcycle care and storage off any detergent residue using shield. Test the product on a plenty of water, as it is harmful small hidden part of the wind- Salt sprayed on roads in the winter to plastic parts. shield to make sure that it does may remain well into spring.
EWA11132 poorly ventilated room or cover- WARNING ing it with a tarp, while it is still Consult a Yamaha dealer for ad- Contaminants on the brakes or tires wet, will allow water and humid- can cause loss of control.
Page 94
Motorcycle care and storage 2. Fill up the fuel tank and add fuel e. Remove the spark plug caps stabilizer (if available) to prevent from the spark plugs, and then Make any necessary repairs before the fuel tank from rusting and the install the spark plugs and the storing the motorcycle.
Page 97
Specifications License plate light: Signaling system fuse: 7.5 A Meter lighting: Ignition fuse: 15.0 A Neutral indicator light: Parking lighting fuse: 7.5 A High beam indicator light: Radiator fan motor fuse: 15.0 A Oil level warning light: Fuel injection system fuse: 10.0 A Turn signal indicator light: ABS control unit fuse:...
These identification numbers are needed when registering the vehicle with the authorities in your area and when ordering spare parts from a Yamaha dealer. VEHICLE IDENTIFICATION NUMBER: 1. Vehicle identification number 1. Engine serial number The vehicle identification number is The engine serial number is stamped stamped into the steering head pipe.
Vehicle status and engine perfor- shown. mance data Fuel-injection and emission-relat- ed data Yamaha will not disclose this data to a third party except: With the consent of the vehicle owner Where obligated by law For use by Yamaha in litigation ...
Index Model label ...........10-1 Multi-function meter unit......4-8 ABS............4-15 Engine break-in ........6-3 ABS warning light ........4-6 Engine idling speed, checking ..... 7-15 Air filter element ........7-15 Engine oil ..........7-11 Neutral indicator light......4-5 Auxiliary DC connectors .......4-25 Engine serial number......10-1 Engine trouble warning light....
Page 101
Index Throttle grip and cable, checking and lubricating........... 7-26 Throttle grip free play, checking... 7-16 Tires ............7-16 Tool kit............ 7-2 Traction control system......3-2 Traction control system indicator light ... 4-7 Traction control system switch ....4-4 Troubleshooting........7-35 Troubleshooting charts......
Page 104
Original instructions PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2017.10-0.5×2 CR...