Page 1
READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFZ45YSXR YFZ45YSSR WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-37-17 BKD-F8199-13...
Page 2
EBU37021 Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your...
Page 3
Congratulations on your purchase of the Yamaha YFZ45YSXR / YFZ45YSSR. This ATV represents the re- sult of many years of Yamaha experience in the production of fine sporting, touring, and pacesetting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
Page 4
EBU17331 IMPORTANT MANUAL INFORMATION EBU17344 FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS IN- JURY OR DEATH. 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 per- sonal injury hazards.
Handlebar switches ........5-3 EWB00012 WARNING Throttle lever..........5-4 Speed limiter..........5-5 Indicates a hazardous situation which, if not Clutch lever..........5-5 avoided, could result in death or serious injury. Brake lever..........5-6 Brake pedal ..........5-6 Parking brake lever........5-7 EBU17421 Shift pedal ..........
Page 7
OPERATION ........... 7-1 Periodic maintenance chart: Emission Starting the engine........7-1 control system .......... 9-3 Shifting ............7-2 Periodic maintenance chart: General Engine break-in ........... 7-4 maintenance and lubrication ....9-5 Parking ............7-5 Removing and installing the cowling and Parking on a slope ........
Page 8
............9-41 U.S.A. 2020 AND LATER MODEL ATV Lubricating the steering shaft ....9-42 LIMITED WARRANTY (for USA)....12-4 Battery............9-43 YAMAHA EXTENDED SERVICE (Y.E.S.) Replacing the fuse ........9-46 (for USA) ..........12-6 Replacing a headlight bulb .......9-46 Adjusting a headlight beam ......9-49 INDEX ............
EBU38860 VEHICLE IDENTIFICATION EBU26016 EBU26032 Vehicle identification number Identification numbers The vehicle identification number is stamped into Record the vehicle identification number, model the frame. This 17-digit number is used to identify label information and key identification number in your individual ATV. the spaces provided below.
Page 10
EBU26021 Key identification number The key identification number is stamped into the key. Record this number in the space provided and use it for reference when ordering a new key. 1. Model label Your specific model can be identified by checking the model type code found on the model label.
EBU17661 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
Page 12
Read and understand all of the labels on your ATV. These labels contain important information for safe and proper operation. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a re- placement label from your Yamaha dealer.
Page 13
Certification of Compliance This ATV complies with applicable provisions of ANSI/SVIA 1-2017 and is subject to an approved ATV action plan submitted by YAMAHA and on file with the U.S. Consumer Product Safety Commission. YAMAHA MOTOR CORPORATION U.S.A. 6555 Katella Avenue, Cypress, California 90630-5101, U.S.A.
Page 14
Do not incinerate, puncture or open. Maximum weight capacity : 220 lbs. (100 kg) Includes weight of operator, cargo and accessories. BB5-F2259-00 1TD-F816M-U0 WARNING NEVER ride as a passenger. Passengers can cause a loss of control, resulting in SEVERE INJURY or DEATH. YAMAHA 3C2-F151H-00...
EBU17432 SAFETY INFORMATION SAFETY INFORMATION Never allow a child under age 16 to operate an EBU29356 ATV without adult supervision, and never allow AN ATV IS NOT A TOY AND CAN BE HAZARD- continued use of an ATV by a child if he or she OUS TO OPERATE.
Page 16
Always inspect your ATV each time you use it to Always follow proper procedures for climbing make sure it is in safe operating condition. Al- hills as described in this manual. Check the ter- ways follow the inspection and maintenance rain carefully before you start up any hill.
Page 17
Always use proper procedures if you stall or roll reduced stopping ability. Test your brakes after backwards when climbing a hill. To avoid stall- leaving water. If necessary, apply them several ing, use the proper gear and maintain a steady times to let friction dry out the linings.
Page 18
In the event of an accident tention. If necessary, contact your riding party 1. If serious injuries are incurred, you may be or local authorities to let them know where safer staying next to your vehicle; it may you are and what has happened. shield you from oncoming riders.
Page 19
This im- While you may find aftermarket products similar in proper position limits the freedom of movement design and quality to genuine Yamaha accesso- of the operator and may limit control ability, ries, recognize that some aftermarket accessories...
Page 20
Do not run engine outdoors where engine EWB00073 WARNING exhaust can be drawn into a building through openings such as windows and doors. Avoid Carbon Monoxide Poisoning All engine exhaust contains carbon monoxide, FOR MORE INFORMATION ABOUT ATV SAFE- a deadly gas.
EBU17715 Controls and instruments 1. Clutch lever 2. Parking brake lever 3. Handlebar switches 4. Main switch 5. Front brake fluid reservoir 6. Throttle lever 7. Brake lever...
EBU1772C INSTRUMENT AND CONTROL FUNCTIONS “ ” (off) EWB00012 WARNING All electrical systems are off. The key can be re- moved. Indicates a hazardous situation which, if not avoided, could result in death or serious injury. EBU29383 Indicator light and warning lights EBU29913 Main switch 1.
Page 24
“ ” (on), or if the warning The electrical circuit of the warning light can be light remains on, have a Yamaha dealer check the checked by setting the engine stop switch to “ ”...
If the warning light does not come on initially when the key is turned to “ ” (on), or if the warning light remains on, have a Yamaha dealer check the electrical circuit. 1. Light switch “ /OFF”...
EBU18102 EBU18286 Start switch “ ” Throttle lever Push this switch to crank the engine with the start- er. See the starting instructions on page 7-1 prior to starting the engine. EBU18157 Light switch “ /OFF” Set this switch to “ ”...
the adjusting screw in direction (b). Do not EBU18325 Speed limiter turn the adjusting screw out more than 12 mm (0.47 in) or the throttle cable could be damaged. Always make sure the throttle lever free play is adjusted to 2.0–4.0 mm (0.08– 0.16 in).
The clutch lever is located on the left side of the The brake lever is located on the right side of the handlebar. To disengage the clutch, pull the clutch handlebar. To apply the front brake, pull the brake lever toward the handlebar grip. To engage the lever toward the handlebar grip.
The brake pedal is located on the right side of the ATV. To apply the rear brake, push down on the brake pedal. EBU18521 Parking brake lever Use the parking brake before starting the engine or parking the ATV, especially on a slope. To apply the parking brake, move the parking brake lever in direction (a).
EWB00221 EBU18532 Shift pedal WARNING Always set the parking brake before starting the engine. The ATV could start moving un- expectedly if the parking brake is not ap- plied. This could cause loss of control or a collision. Always be sure you have released the park- ing brake before you begin to ride.
of sparks, open flames, or other sources of EBU37980 Fuel tank cap ignition such as the pilot lights of water heat- ers and clothes dryers. 2. Do not overfill the fuel tank. When refueling, be sure to insert the pump nozzle into the fuel tank filler hole.
3. Wipe up any spilled fuel immediately. Recommended fuel: NOTICE: Immediately wipe off spilled fuel Premium unleaded gasoline (Gasohol [E10] with a clean, dry, soft cloth, since fuel may acceptable) deteriorate painted surfaces or plastic Fuel tank capacity: parts. [ECB00982] 10 L (2.6 US gal, 2.2 Imp.gal) 4.
To install the seat ECB00071 NOTICE Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as to the exhaust system. EBU26734 Seat To remove the seat 1.
Page 34
(b) to decrease the spring preload and thereby soften the suspension. Notes on adjusting the suspension A special wrench can be obtained at a Yamaha dealer to make the spring preload adjustment. When adjusting the damping force settings, turn the adjuster in direction (a) until it stops, and then count the turns or clicks in direction (b).
Page 35
Spring preload setting: Minimum (soft): Distance A = 302.5 mm (11.91 in) Standard: Distance A = 293.0 mm (11.54 in) Maximum (hard): Distance A = 282.5 mm (11.12 in) 1. Locknut 2. Spring preload adjusting nut 3. Special wrench The spring preload setting is determined by measuring distance A, shown in the illustration.
Page 36
Tightening torque: Rebound damping force settings: Locknut: Minimum (soft): 50 N·m (5.0 kgf·m, 37 lb·ft) 30 click(s) in direction (b) Standard: 16 click(s) in direction (b) Rebound damping force Maximum (hard): Turn the rebound damping force adjusting screw 1 click(s) in direction (b) in direction (a) to increase the rebound damping force.
Page 37
Slow compression damping force Turn the slow compression damping force adjust- ing screw in direction (a) to increase the slow com- pression damping force. Turn in direction (b) to decrease the slow compression damping force. 1. Fast compression damping force adjusting bolt Fast compression damping force settings: Minimum (soft): 2 turn(s) out from the fully turned in posi-...
Notes on adjusting the suspension source. This may cause the unit to explode A special wrench can be obtained at a Yamaha due to excessive gas pressure. dealer to make the spring preload adjustment.
Page 39
Spring preload 1. Elevate the vehicle and place a suitable stand under the frame. 2. Remove the cowling. (See page 9-10.) 3. Remove the clip from the hose holder, re- move the bolt, and then move the blow-by gas chamber away from the vehicle. 1.
Page 40
1. Bolt 1. Air filter case 2. Bolt 2. Collar 3. Air filter case holding plate 7. Disconnect the coupler. 6. Remove the bolts, and then remove the air fil- ter case by disconnecting it from the air in- take duct. 1.
Page 41
8. Loosen the clamp screw at the throttle body side, and then disconnect the air intake duct from the throttle body. 1. Locknut 2. Spring preload adjusting nut 3. Special wrench 1. Clamp screw 2. Air intake duct The spring preload setting is determined by 9.
Page 42
Spring preload setting: Tightening torque: Minimum (soft): Locknut: Distance A = 286.5 mm (11.28 in) 30 N·m (3.0 kgf·m, 22 lb·ft) Standard: 12. Connect the air intake duct to the throttle Distance A = 278.0 mm (10.94 in) body, and then tighten the clamp screw at the Maximum (hard): throttle body side.
Page 43
16. Install the air filter case holding plate by in- stalling the bolts and collars, and then tighten the bolts to the specified torque. Tightening torque: Air filter case holding plate bolt: 7 N·m (0.7 kgf·m, 5.2 lb·ft) 17. Install the blow-by gas chamber by installing the bolt, tighten the bolt to the specified torque, and then install the clip to the hose holder.
Page 44
Fast compression damping force Fast compression damping force settings: Turn the fast compression damping force adjust- Minimum (soft): ing bolt in direction (a) to increase the fast com- 2 turn(s) out from the fully turned in posi- pression damping force. Turn in direction (b) to tion decrease the fast compression damping force.
Page 45
Do not dispose of a damaged or worn out shock absorber assembly yourself. Take the shock absorber assembly to a Yamaha deal- 1. Slow compression damping force adjusting screw er for any service. Slow compression damping force settings:...
EBU29404 Handlebar position 1. Handlebar The handlebar can be adjusted to one of four po- sitions to suit your preference. Have a Yamaha dealer adjust the position of the handlebar. EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:...
Page 48
ITEM ROUTINE PAGE • Check operation. If soft or spongy, have Yamaha dealer bleed hy- draulic system. • Check brake pads for wear, and replace if necessary. Front brake 6-4, 9-29, 9-30, 9-32 • Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
Page 49
ITEM ROUTINE PAGE • Make sure that operation is smooth. Lubricate lever pivoting points Brake and clutch levers 9-39 if necessary. Chassis fasteners • Make sure that all nuts, bolts and screws are properly tightened. Instruments, lights and • Check operation, and correct if necessary. switches...
Yamaha dealer check the brake sys- EBU19713 Front and rear brakes tem. Brake lever and brake pedal Check that there is no free play in the brake le- ver. If there is free play, have a Yamaha dealer check the brake system.
Check the operation of the throttle lever. It must also cause the tire to dislodge from the rim un- open smoothly and spring back to the idle position der severe riding conditions. [EWB02542] when released. Have a Yamaha dealer correct if necessary. Recommended tire pressure: Front EBU19771 35.0 kPa (0.350 kgf/cm², 5.0 psi)
Page 52
After extensive tests, only the tires list- equipment with your vehicle. (See page 9-2.) ed below are approved for this model by Yamaha. When using the tire pressure gauge, make two measurements and use the second reading as grit in the gauge or tire valve could have caused the first reading to be incorrect.
EBU19841 Front: Chassis fasteners Manufacturer/model: Make sure that all nuts, bolts and screws are MAXXIS/MS21 properly tightened. Size: AT21 x 7R10 EBU19851 Instruments, lights and switches Rear: Manufacturer/model: Check that all instruments, lights and switches are MAXXIS/MS22 working properly. Correct if necessary. Size: AT20 x 10R9 Aftermarket tires and rims...
3. Shift the transmission into neutral. The neutral accident or injury. indicator light should come on, if it does not come on, have a Yamaha dealer check the electrical circuit. EBU29954 Starting the engine...
The clutch is disengaged with the transmission To shift into neutral, release the throttle lever, ap- in gear. However, it is recommended to shift ply the clutch, and then repeatedly depress the into neutral before starting the engine. shift pedal until it stops. When it stops, it will be in first gear.
Page 56
3. Shift into first gear, and then release the EBU20653 To decelerate brake. NOTICE: Always close the throttle When slowing down or stopping, release the before shifting gears, otherwise damage throttle and apply the brakes smoothly and evenly. to the engine and drive train may result. As you slow down, shift to a lower gear.
erly lubricated only when the engine is run- EBU40411 Engine break-in ning. Inadequate lubrication may damage There is never a more important period in the life the transmission. Always use the clutch when changing gears. of your engine than the first 240 km (150 mi) or 15 hours of operation.
WARNING engine break-in period, immediately have a Avoid parking on hills or other inclines. Parking Yamaha dealer check the ATV. on a hill or other incline could cause the ATV to roll out of control, increasing the chance of an EBU26762 accident.
An accessory which can shift position and accessories or offer other modifications for or come off while you are riding could affect Yamaha vehicles. Yamaha is not in a position to your ability to control the ATV. test the products that these aftermarket compa-...
Page 60
Do not mount an accessory where it could inter- trailer, you must use common sense and good fere with your ability to control the ATV. Exam- judgment as the stability and handling of an ATV ples include (but are not limited to) a heavy or can be changed.
Page 61
practice not to exceed 2nd gear whenever you are carrying heavier loads or when towing a trailer. Allow more braking distance. A heavier ATV takes longer to stop. Avoid making sharp turns unless at very slow speeds. Avoid hills and rough terrain. Choose terrain carefully.
Before you begin to ride, be Yamaha. They should then regularly practice the sure you have read this Owner’s Manual com- skills learned in the course and the operating tech- pletely and understand the operation of the con- niques described in this Owner’s Manual.
Page 64
more information about the training course, con- tact an authorized ATV dealer or call 1-800-887- 2887. Riding your ATV requires skills acquired through practice over a period of time. Do not attempt to operate at maximum perfor- mance until you are totally familiar with the ATV’s handling and performance characteristics.
Page 65
proved motorcycle helmet increases your chances of a severe head injury or death in the event of an accident. [EWB01412] Apparel Always wear the following to reduce risk of injury in an accident: Approved motorcycle helmet that fits properly ...
Page 66
Wear eye protection when operating your ATV to Do not operate after or while consuming alco- reduce the risk of a serious accident or injury. Eye hol or drugs. protection, such as a face shield or goggles, may The operator’s performance capability is reduced reduce the risk of foreign material getting in your by the influence of alcohol or drugs.
Page 67
nance procedures and schedules described in the Owner’s Manual. WARNING! Failure to inspect the ATV before riding it or failure to maintain it properly increases the possibility of an acci- dent and equipment damage. [EWB01433] Speed limiter For riders less experienced with this model, the throttle lever housing is equipped with a speed limiter.
Page 68
Loading and accessories MAXIMUM LOADING LIMIT EWB00973 ATV loading limit (total weight of cargo, rid- WARNING er, accessories, and tongue): Improper loading or towing can increase the 100.0 kg (220 lb) risk of loss of control, an overturn, or other ac- cident.
Page 69
ATV should creases the chance of an accident, including be genuine Yamaha or equivalent components an overturn. Never attempt stunts, such as designed for use on this ATV and should be in- wheelies or jumps.
Page 70
Exhaust system To prevent burns, avoid touching the exhaust sys- tem. Park the ATV in a place where pedestrians or EWB01502 WARNING children are not likely to touch it. Dry grass or brush or other combustible ma- terial accumulated around the engine area could catch fire.
BE CAREFUL WHERE YOU RIDE ate ATVs on public streets, roads and highways. This ATV is designed for off-road use only. WARNING! Never operate this ATV on any pub- WARNING! Paved surfaces may seriously af- lic street, road or highway, even a dirt or gravel fect handling and control of the ATV, and may one.
Page 72
Know the terrain where you ride. Ride cautiously in Do not operate on rough, slippery, or loose terrain unfamiliar areas. Stay alert for holes, rocks, or until you have learned and practiced the skills nec- roots in the terrain, and other hidden hazards essary to control the ATV on such terrain.
Page 73
When riding in an area where you might not easily be seen, such as desert terrain, mount a caution flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch. WARNING! You could collide with another vehicle if operating in off-road ar- eas where you cannot easily be seen.
and at the same time, quickly pull in the clutch le- TURNING YOUR ATV ver and shift into 2nd gear. Open the throttle part EWB01772 WARNING way and gradually release the clutch. WARNING! If the throttle is applied too abruptly or if the Always follow proper procedures for turning as throttle is not released during shifting, or if the described in this Owner’s Manual.
Page 75
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 throt- tle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the ATV to tip.
Avoid crossing the side of a steep hill if pos- CLIMBING UPHILL sible. When crossing the side of a hill, shift EWB01592 WARNING your weight to the uphill side of the ATV. Climbing hills improperly can cause overturns or loss of control. Use proper riding techniques described in this Owner’s Manual.
Page 77
It is important when climbing a hill to make sure that your weight is transferred forward on the ATV. This can be accomplished by leaning forward and, on steeper inclines, standing on the footrests and leaning forward over the handlebars. Whenever possible, ride straight up hills.
If you start to roll backwards, DO NOT apply the rear brake, and apply the front brake gradually. The ATV could easily tip over backwards. When fully stopped, apply the rear brake as well, and then lock the parking brake. Dismount the ATV im- mediately on the uphill side or to a side if pointed straight uphill.
Page 79
Never operate the ATV on hills too steep for Whenever possible, ride your ATV straight down- the ATV or for your abilities. The ATV can hill. Avoid sharp angles which could allow the ATV overturn more easily on extremely steep hills to tip or roll over.
CROSSING A SLOPE As you travel across a slope, lean your body in the uphill direction. It may be necessary to correct the EWB01633 WARNING steering when riding on loose surfaces by pointing the front wheels slightly uphill. When riding on Improperly crossing hills or turning on hills could cause loss of control or cause the ATV to slopes, be sure not to make sharp turns either up...
CROSSING THROUGH SHALLOW WATER EWB01642 WARNING Operating this vehicle through deep or fast- flowing water can lead to loss of control or an overturn. To reduce your risk of drowning or other injuries, use care when crossing through water. Never operate this ATV water deeper than the depth specified in your Owner’s Man- ual, as tires may float, increasing the risk of an overturn.
Test your brakes after leaving the water. If neces- Wash the ATV in fresh water if it has been operat- sary, apply them several times to let friction dry ed in salt water or muddy conditions. out the linings. Do not continue to ride your ATV without verifying that you have regained proper braking ability.
Riding over rough terrain should be done with To reduce the tendency for the front wheels to caution. Look out for obstacles which could cause slide in loose or slippery conditions, positioning damage to the ATV or could lead to an upset or your weight over the front wheels will sometimes accident.
WHAT TO DO... If your ATV doesn’t turn when you want it to: Bring the ATV to a stop and practice the turning maneuvers again. Be sure you are putting your weight on the footrest to the outside of the turn. Position your weight over the front wheels for better control.
Page 85
If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned to- wards 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.
The intervals given in the periodic maintenance vice or while using the vehicle. If you are not fa- charts should be considered as a general guide miliar with vehicle service, have a Yamaha under normal riding conditions. However, DE- dealer perform the service.
Make sure to protect the Owner’s Manual If you do not have the tools or experience required by putting it in the plastic bag, then by placing the for a particular job, have a Yamaha dealer perform bag in the document pouch. it for you.
For odometer or hour meter-equipped vehicles, follow the month maintenance interval if the ATV isn’t ridden for the stated distance or engine operating hours. Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.
Page 89
INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours • Check for leakage and replace gasket(s) if neces- sary. √ √ √ Exhaust system • Check for looseness and tighten all screw clamps and joints if necessary.
For odometer or hour meter-equipped vehicles, follow the month maintenance interval if the ATV isn’t ridden for the stated distance or engine operating hours. Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.
Page 91
INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours • Check for cracks or other damage, and replace if √ √ √ √ necessary. Brake hoses •...
Page 92
INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours √ √ √ Drive chain roller • Check for wear and replace if necessary. • Make sure that all nuts, bolts, and screws are √...
Page 93
INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours Moving parts and √ √ √ √ • Lubricate. cables • Check operation. • Check throttle lever free play, and adjust if neces- √...
Page 94
EBU29431 Some maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or muddy areas, or at full-throttle. Replace the fuel hose every five years and if cracked or damaged. Hydraulic brake service •...
EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. EBU30131 Removing and installing the cowling and panels The cowling and panels shown need to be re- moved to perform some of the maintenance jobs described in this chapter.
Page 96
5. Install the fuel tank cap by turning it clock- wise. To install the panel 1. Remove the fuel tank cap by turning it coun- terclockwise. 2. Place the panel in the original position, and then install the quick fasteners. NOTICE: When installing the panel, be sure not to pinch the cables or wires.
Page 97
Panels B and C To remove a panel 1. Remove panel A. 2. Pull the panel off. 2. Install panel A. Cowling To remove the cowling 1. Remove panels A, B and C. To install a panel 2. Loosen the quick fasteners, and then take the 1.
The spark plug is an important engine component, which should be checked periodically, preferably by a Yamaha dealer. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accor- 1.
Specified spark plug: Tightening torque: NGK/CR8E Spark plug: 13 N·m (1.3 kgf·m, 9.6 lb·ft) Before installing the spark plug, the spark plug gap should be measured with a wire thickness gauge and, if necessary, adjusted to specification. If a torque wrench is not available when installing the spark plug, a good estimate of the correct torque is 1/4–1/2 turn past finger tight.
Page 100
To achieve the proper engine oil temperature for an accurate oil level reading, the engine must have first completely cooled down, and then warmed up again for several minutes to normal operating temperature. 3. Remove the engine oil tank filler cap, and wipe the engine oil dipstick off with a clean rag.
Page 101
When adding oil, be careful not to overfill the en- gine oil tank; the oil level rises faster starting from the half-level mark on the dipstick. 6. Check the O-ring for damage, and replace it if necessary. 7. Insert the dipstick into the engine oil tank filler hole, and then tighten the engine oil tank filler cap.
Page 102
1. Engine oil tank drain bolt 1. Crankcase engine oil drain bolt 2. Gasket 2. Gasket 6. Remove the crankcase engine oil drain bolt and its gasket. Skip steps 7–10 if the oil filter element is not being replaced. 7. Remove the oil filter element cover by remov- ing the bolts.
Page 103
1. Oil filter element cover 1. Oil filter element 2. Bolt 2. O-ring 8. Remove the oil filter element and the O-rings. 9. Install a new oil filter element and new O- rings. Make sure that the O-rings are properly seated. 10.
Page 104
11. Install the crankcase engine oil drain bolt, the ECB00301 NOTICE engine oil tank drain bolt and their new gas- In order to prevent clutch slippage (since the ket, and then tighten the bolts to their speci- fied torques. engine oil also lubricates the clutch), do not mix any chemical additives.
Tightening torque: Engine guard bolt: 7 N·m (0.7 kgf·m, 5.2 lb·ft) EBU38620 Why Yamalube YAMALUBE oil is a Genuine YAMAHA Part born of the engineers’ passion and belief that engine oil is an important liquid engine component. We form EBU23473 Coolant...
Page 106
If genuine Yamaha coolant is not available, use an ethylene glycol antifreeze containing corrosion in- hibitors for aluminum engines and mix with dis- tilled water at a 1:1 ratio. ECB02190 NOTICE Mix antifreeze with distilled water only. Howev- er, if distilled water is not available, soft water may be used for refilling.
If dust or water collects in this hose, empty and corrosion. If water has been added to the hose and clean the air filter element and air fil- the coolant, have a Yamaha dealer check ter case. the antifreeze content of the coolant as soon as possible, otherwise the effective- ness of the coolant will be reduced.
Page 108
1. Air filter case cover 1. Air filter element 2. Air filter case cover holder 2. Washer 3. Wing bolt 4. Fully loosen the wing bolt. 6. Remove the wing bolt and washer from the air 5. Remove the air filter element together with filter element.
Page 109
10. Check the sponge material and replace it if 2. Air filter element frame damaged. 11. Apply Yamaha foam air filter oil or other qual- 8. Wash the sponge material gently but thor- ity foam air filter oil to the sponge material.
Page 110
1. Air filter element seat 1. Washer 14. Install the washer onto the air filter element 15. Insert the air filter element into the air filter frame, and then insert the wing bolt into the case, and then tighten the wing bolt. hole in the air filter element frame.
17. Install the seat. 1. Remove the tailpipe cover by removing the bolts. The air filter element should be cleaned every 20– 40 hours. It should be cleaned and lubricated more often if the ATV is operated in extremely dusty areas. Each time the air filter element main- tenance is performed, check the air inlet of the air filter case for obstructions.
Page 112
1. Bolt 1. Tailpipe 2. Retainer 2. Spark arrester 3. Tailpipe 4. Install the gasket, tailpipe, and retainer and 4. Gasket align the bolt holes. 3. Tap the tailpipe lightly, and then use a wire 5. Install the bolts and tighten them to the spec- brush to remove any carbon deposits from ified torque.
The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the inter- vals specified in the periodic maintenance chart. EBU29602 Brakes 1.
Rear brake pads that the wear indicator grooves have almost dis- Each brake pad is provided with wear indicator appeared, have a Yamaha dealer replace the grooves, which allow you to check the brake pad brake pads as a set.
Front brake 1. Wear indicator groove 1. Minimum level mark EBU29502 Rear brake Checking the brake fluid level Before riding, check that the brake fluid is above the minimum level mark. Check the brake fluid lev- el with the top of the reservoir level. Replenish the brake fluid if necessary.
If the brake fluid level goes down sud- only DOT 4 brake fluid from a sealed contain- denly, have a Yamaha dealer check the cause be- Use only the specified brake fluid; otherwise, fore further riding.
Yamaha dealer adjust it. 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 in- spect the brake system. 9-32...
1. Release the parking brake by moving the If the cable length cannot be adjusted to specifi- parking brake lever to the right. cation, consult a Yamaha dealer. 2. Fully loosen the locknut and the adjusting bolt at the rear brake caliper.
[ECB00522] switch should be adjusted by a Yamaha dealer. Turn the rear brake light switch adjusting nut while Tightening torque: holding the brake light switch in place. To make...
2. Fully turn the adjusting nut at the clutch lever EBU30155 Adjusting the clutch lever free play in direction (a) to loosen the clutch cable. 3. Slide back the rubber cover at the clutch ca- ble. 1. Clutch lever free play 2.
If the specified free play cannot be obtained as de- scribed above or if the clutch does not operate correctly, have a Yamaha dealer check the internal clutch mechanism. EBU26867 Drive chain slack The drive chain slack should be checked before each ride and adjusted if necessary.
Page 122
1. Rear wheel axle pinch bolt 2. Rod 3. Drive chain tensioner 4. Hole A rod can be obtained at a Yamaha dealer to make this adjustment. Tightening torque: Rear axle pinch bolt: 4. Shift the transmission into neutral.
If a cable is damaged or does not move ECB00562 smoothly, have a Yamaha dealer check or replace NOTICE The drive chain must be lubricated after wash- ing the ATV or riding in the rain or wet areas.
EWB02582 Recommended lubricants: WARNING Brake lever: Inspect cables frequently and replace if Silicone grease damaged. Corrosion can result when the ca- Clutch lever: ble sheaths become damaged, and cables Lithium-soap-based grease can also become frayed or kinked, which could restrict the operation of controls and Brake lever lead to an accident or injury.
The operation of the shift pedal should be EBU38880 checked before each ride. If operation is not Checking the wheel hub bearings smooth, have a Yamaha dealer check the vehicle. The front wheel hub bearings must be checked at the intervals specified in the periodic maintenance EBU28872 Checking and lubricating the brake chart.
The swingarm pivots must be lubricated by a Yamaha dealer at the intervals specified in the pe- riodic maintenance chart. Recommended lubricant: Lithium-soap-based grease EBU25036 Lubricating the upper and lower arm pivots The upper and lower arm pivots must be lubricat-...
For parts equipped with a grease nipple, use a grease gun. EBU25096 Lubricating the steering shaft The steering shaft must be lubricated by a Yamaha dealer at the intervals specified in the pe- riodic maintenance chart. Recommended lubricant: Lithium-soap-based grease 9-42...
KEEP OUT OF REACH OF CHILDREN. hands after handling. It is recommended to have the battery serviced by a Yamaha dealer. To remove the battery 1. Remove the seat. (See page 5-11.) 2. Remove the battery holding plate by remov- ing the bolts.
Page 129
3. Disconnect the negative battery lead first, ECB00622 NOTICE then the positive battery lead by removing their bolt. NOTICE: When removing the bat- Never attempt to open the battery or remove tery, the main switch must be off, and the the battery cell seals, as this would permanent- negative lead must be disconnected be- ly damage the battery.
Page 130
ECB00942 NOTICE Always keep the battery charged. Storing the battery in a discharged state for an extended period of time will cause permanent battery damage. Do not store the battery in an excessively cold or warm place [below freezing or above 30 °C (90 °F)].
1. Fuse 4. If the fuse immediately blows again, have a 2. Spare fuse Yamaha dealer check the electrical system. The fuse holder is located under the seat. (See page 5-11.) EBU30873 If the fuse is blown, replace it as follows.
Page 132
3. Remove the socket by pushing it in and turn- ing it counterclockwise, and then remove the burnt-out bulb. 1. Headlight unit 2. Bolt 2. Remove the bulb cover. 1. Socket 4. Place a new headlight bulb into position. NOTICE: Do not touch the glass part of the bulb.
Page 133
1. Do not touch the glass part of the bulb. 1. Bulb cover 2. “TOP” mark 5. Install the socket by pushing it in and turning 7. Place the headlight unit in the original posi- it clockwise. tion, and then install the bolt. 6.
ECB00691 If the brake/tail light does not come on, have a NOTICE Yamaha dealer check it. It is advisable to have a Yamaha dealer make this adjustment. EBU25653 Removing a wheel To raise a headlight beam, turn the headlight 1.
However, should your ATV 1. Arrow mark require any repair, take it to a Yamaha dealer, 2. Forward rotating direction whose skilled technicians have the necessary 3. Wheel nut tools, experience, and know-how to service the 2.
Page 136
EWB02281 WARNING Do not smoke when checking the fuel system. Fuel can ignite or explode, causing severe inju- ry or property damage. Make sure there are no open flames or sparks in the area, including pi- lot lights from water heaters or furnaces. 9-51...
Remove the spark plug and check the electrodes. The engine does not start. Have a Yamaha dealer check the ATV. Check the compression. 4. Compression The engine does not start. There is compression.
Page 138
Start the engine. If the engine overheats again, have a The coolant level Yamaha dealer check and repair the cooling system. is OK. Tap water can be used in an emergency. Change to the recommended coolant as soon as possible.
EBU25861 CLEANING AND STORAGE ter pressure may cause water seepage EBU25904 Cleaning and deterioration of wheel bearings, Frequent, thorough cleaning of your ATV will not brakes, transmission seals and electrical only enhance its appearance but will improve its devices. Many expensive repair bills have general performance and extend the useful life of resulted from improper high-pressure de- many components.
abrasives which may mar the paint or protec- 3. Fill up the fuel tank and add fuel stabilizer (Fu- tive finish. When finished cleaning, start the el Med Rx if available), and then run the en- engine and let it idle for several minutes. gine for 5 minutes to distribute the treated 9.
Page 141
6. Put the frame on stands or blocks to raise all wheels off the ground. (Alternatively, turn the wheels each month to prevent the tires from degrading in one spot.) 7. Cover the muffler outlet with a plastic bag to prevent moisture from entering it.
EBU25964 SPECIFICATIONS Dimensions: Displacement: 449 cm³ Overall length: Bore × stroke: 1795 mm (70.7 in) 95.0 × 63.4 mm (3.74 × 2.50 in) Overall width: Starting system: 1240 mm (48.8 in) Electric starter Overall height: Engine oil: 1065 mm (41.9 in) Wheelbase: Recommended brand: 1270 mm (50.0 in)
Page 143
Recommended engine oil grade: Fuel tank capacity: API service SG type or higher, JASO standard MA 10 L (2.6 US gal, 2.2 Imp.gal) Fuel reserve amount: 130 ˚F 3.4 L (0.90 US gal, 0.75 Imp.gal) Throttle body: SAE 5W-30 ID mark: 1TD1 SAE 10W-30 Drivetrain:...
Page 144
Front brake: Type: Hydraulic disc brake Rear brake: Type: Hydraulic disc brake Front suspension: Type: Double wishbone Rear suspension: Type: Swingarm (link suspension) Electrical system: System voltage: 12 V Battery: Model: YTZ7S Voltage, capacity: 12 V, 6.0 Ah Lights: Headlight: T19L, 30.0 W/30.0 W Brake/tail light: 11-3...
EBU25984 CONSUMER INFORMATION EBU29663 Vehicle Emission Control Information label The Vehicle Emission Control Information label is affixed at the location in the illustration. This label shows specifications related to exhaust emissions as required by federal law, state law and Environ- ment Canada.
EBU26062 Noise regulation (for USA) 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.
EBU26082 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. MAINTENANCE INTERVAL DATE OF SERVICING DEALER...
EBU30973 YAMAHA MOTOR CORPORATION, U.S.A. 2020 AND LATER MODEL ATV LIMITED WARRANTY (for USA) Yamaha Motor Corporation, U.S.A. hereby warrants THE CUSTOMER’S RESPONSIBILITY under this YAMAHA MOTOR CORPORATION, U.S.A. MAKES that new Yamaha ATVs purchased from warranty shall be to:...
Page 149
Attention: Warranty Department 3. Each Yamaha ATV dealer is held responsible for his setup, service and war- ranty repair work. This will ensure that Yamaha Motor Corporation, U.S.A. has an up-to-date registration record in accordance with federal law.
Y.E.S. coverage is transferable to a new owner if you shows in the comprehensive coverage benefits. There sell or trade in your ATV. That can make your Yamaha are no mileage limitations. Coverage isn’t limited to “moving par ts” or the “drive train” like many other plans.
Page 151
Yamaha. See your dealer today! YAMAHA EXTENDED SERVICE A special note: If visiting your dealer isn’t convenient, contact Yamaha with your VIN number (vehicle identification number). We’ll be happy to help you get the Y.E.S. coverage you need. Yamaha Service Marketing P.O. Box 6555...
INDEX Accessories and loading ..........7-6 Drive chain ..............6-5 Air filter element, cleaning ..........9-22 Drive chain, lubricating ..........9-38 Drive chain slack ............9-36 Battery ................9-43 Brake and clutch levers, checking and lubricating ..9-39 Engine break-in .............. 7-4 Brake fluid, changing ...........9-31 Engine oil ...............
Page 153
Light switch ..............5-4 Specifications .............. 11-1 Speed limiter ..............5-5 Start switch ..............5-4 Main switch ..............5-1 Steering shaft, lubricating ..........9-42 Maintenance chart, emission control system ....9-3 Storage ................ 10-2 Maintenance chart, general maintenance and Suspension, lubricating the upper and lower arm lubrication ..............
Page 155
EBU30393 For your best ownership experience, think Genuine Yamaha! Genuine Yamaha Parts – Genuine Yamaha replacement parts are the exact same parts as the ones originally equipped on your vehicle, providing you with the performance and durability you have come to expect.
Page 156
WARNING Improper ATV use can result in SEVERE INJURY or DEATH. ALWAYS USE NEVER USE NEVER CARRY NEVER USE AN APPROVED ON PUBLIC PASSENGERS WITH DRUGS HELMET AND ROADS OR ALCOHOL PROTECTIVE GEAR NEVER operate: ALWAYS without proper training or instruction. use proper riding techniques to avoid at speeds too fast for your skills or the vehicle overturns on hills and rough...
Need help?
Do you have a question about the YFZ 2024 and is the answer not in the manual?
Questions and answers