Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. NOTICE: The removal or modiﬁcation of evaporative emission-related parts on this OHRV is illegal. Violators may be subject to civil and/or criminal penalties as provided under California and federal law. OWNER’S MANUAL YFM70RSBP/YFM70RSCP YFM70RCBP/YFM70RCCP WARNING...
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 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. This manual will provide you with a good basic understanding of the features and operation of this ATV.
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.
Page 5 Please check your local riding laws and regulations before operating this ATV. EBU17403 YFM70RSBP / YFM70RSCP / YFM70RCBP / YFM70RCCP OWNER’S MANUAL ©2023 by Yamaha Motor Corporation, U.S.A. 1st edition, May 2022 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U.S.A.
Page 6 Self-diagnostic device ........ 5-3 EWB00012 WARNING Handlebar switches ........5-3 Throttle lever..........5-4 Indicates a hazardous situation which, if not Speed limiter..........5-5 avoided, could result in death or serious injury. Clutch lever..........5-5 Brake lever..........5-6 Brake pedal ..........5-7 EBU17421 Parking brake lever........
Page 7 Throttle lever ..........6-5 RIDING OVER ROUGH TERRAIN..... 8-21 Drive chain ..........6-5 SLIDING AND SKIDDING ......8-22 Tires ............6-5 WHAT TO DO IF........8-23 Chassis fasteners........6-7 Instruments, lights and switches ....6-7 PERIODIC MAINTENANCE AND ADJUSTMENT ..........9-1 OPERATION ...........
Page 8 ..9-43 U.S.A. 2020 AND LATER MODEL ATV Lubricating the upper and lower arm LIMITED WARRANTY (for USA)....12-4 pivots ............9-44 YAMAHA EXTENDED SERVICE (Y.E.S.) Lubricating the steering shaft ....9-45 (for USA) ..........12-6 Battery............9-46 Replacing a fuse ........9-49 INDEX ............
Page 9 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.
Page 11 EBU17661 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
Page 12 Certification of Compliance WARNING This ATV complies with applicable provisions of ANSI/SVIA1-2017 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. UNDER 6555 Katella Avenue, Cypress, California 90630-5101, U.S.A.
Page 13 WARNING NEVER ride as a passenger. Passengers can cause a loss of control, resulting in SEVERE INJURY or DEATH. YAMAHA 3C2-F151H-00 4XE-F1568-00...
Page 14 WARNING WARNING Improper tire pressure or overloading can cause This unit contains high pressure nitrogen gas. loss of control. Mishandling can cause explosion. Loss of control can result in severe injury or • Read owner’s manual for instructions. death. • Do not incinerate, puncture or open. OPERATING TIRE PRESSURE : Set with tires cold •...
Page 15 EBU17432 SAFETY INFORMATION SAFETY INFORMATION  Never allow a child under age 16 to operate an EBU26667 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 While you may find aftermarket products similar in of the operator and may limit control ability, design and quality to genuine Yamaha accesso- therefore, such accessories are not recom- ries, recognize that some aftermarket accessories mended.
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.
Page 21 EBU17681 DESCRIPTION EBU17691 EBU17701 Left view Right view 3 4 5 6 7 10 9 1. Engine oil tank 1. Muffler 2. Coolant reservoir 2. Spark arrester 3. Fuel tank cap 3. Air filter 4. Idle adjusting screw 4. Rear brake fluid reservoir 5.
Page 22 EBU17715 Controls and instruments 1. Clutch lever 2. Parking brake lever 3. Main switch 4. Front brake fluid reservoir 5. Brake lever 6. Throttle lever 7. Reverse knob 8. Handlebar switches...
Page 23 EBU1772C INSTRUMENT AND CONTROL FUNCTIONS EWB00012 “ ” (off) WARNING All electrical systems are off. The key can be re- Indicates a hazardous situation which, if not moved. avoided, could result in death or serious injury. EBU26699 Indicator lights and warning lights EBU29913 Main switch 1.
Page 24 “ ” (on), or if the warning checked by setting the engine stop switch to “ ” light remains on, have a Yamaha dealer check the and turning the key to “ ” (on). The warning light vehicle.
Page 25 ” To prevent engine damage, be sure to consult This warning light comes on or flashes when an a Yamaha dealer as soon as possible if this oc- electrical circuit monitoring the engine is not work- curs. ing correctly. When this occurs, have a Yamaha dealer check the self-diagnostic system.
Page 26 starter will not have enough power to crank the EBU18081 Engine stop switch “ ” engine. If this should happen, remove the bat- Set this switch to “ ” before starting the engine. tery and recharge it. (See page 9-46.) The engine stop switch controls the ignition and stops the engine when it is running.
Page 27 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).
Page 28 The clutch lever is located on the left side of the YFM70RSCP / YFM70RCCP handlebar. To disengage the clutch, pull the clutch lever toward the handlebar grip. To engage the clutch, release the lever. The lever should be pulled rapidly and released slowly for smooth clutch operation.
Page 29 EBU18434 Brake pedal 1. Parking brake lever (locked position) 1. Brake pedal 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.
Page 30 EWB00221 EBU18542 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.
Page 31 EBU18643 EBU37980 Reverse knob “REV” Fuel tank cap 1. Reverse knob “REV” 1. Fuel tank cap The reverse knob is used when shifting into re- Remove the fuel tank cap by turning it counter- verse. (See page 7-4.) clockwise. EWB02522 WARNING Gasoline and gasoline vapors are extremely flammable.
Page 32 of sparks, open flames, or other sources of 3. Wipe up any spilled fuel immediately. NOTICE: Immediately wipe off spilled fuel ignition such as the pilot lights of water heat- ers and clothes dryers. with a clean, dry, soft cloth, since fuel may 2.
Page 33 ECB00071 Recommended fuel: NOTICE Regular unleaded gasoline (Gasohol [E10] Use only unleaded gasoline. The use of leaded acceptable) gasoline will cause severe damage to internal Fuel tank capacity: engine parts, such as the valves and piston 9.9 L (2.6 US gal, 2.2 Imp.gal) rings, as well as to the exhaust system.
Page 34 To install the seat EWB00401 WARNING Always adjust the shock absorber assemblies on the left and right side to the same setting. Uneven adjustment can cause poor handling and loss of stability, which could lead to an ac- cident. Adjust the spring preload as follows. Turn the spring preload adjusting ring in direction (a) to increase the spring preload and thereby harden the suspension, and in direction (b) to de-...
Page 35 1. Spring preload adjusting ring 1. Special wrench 2. Position indicator Spring preload setting: Minimum (soft): A special wrench can be obtained at a Yamaha dealer to make this adjustment. Standard: Maximum (hard): 5-13...
Page 36 Uneven adjustment can cause poor er for any service. handling and loss of stability, which could lead to an accident. Notes on adjusting the suspension  A special wrench can be obtained at a Yamaha dealer to make the spring preload adjustment. 5-14...
Page 37  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).  Although a damping force adjuster may turn or click beyond the stated minimum settings, such adjustments are ineffective and may damage the suspension.
Page 38 Spring preload setting: Tightening torque: Minimum (soft): Locknut: Distance A = 268.0 mm (10.55 in) 42 N·m (4.2 kgf·m, 31 lb·ft) Standard: Distance A = 262.0 mm (10.31 in) Rebound damping force Maximum (hard): Turn the rebound damping force adjusting screw Distance A = 253.0 mm (9.96 in) in direction (a) to increase the rebound damping force.
Page 39 Rebound damping force settings: Minimum (soft): 30 click(s) in direction (b) Standard: 18 click(s) in direction (b) Maximum (hard): 1 click(s) in direction (b) Compression damping force Fast compression damping force 1. Fast compression damping force adjusting bolt Turn the fast compression damping force adjust- ing bolt in direction (a) to increase the fast com- Fast compression damping force settings: pression damping force.
Page 40  Do not dispose of a damaged or worn out shock absorber assembly yourself. Take the 1. Slow compression damping force adjusting screw shock absorber assembly to a Yamaha deal- Slow compression damping force settings: er for any service. Minimum (soft):...
Page 41 (b) to decrease the spring preload and 2. Locknut thereby soften the suspension. 3. Special wrench  A special wrench can be obtained at a Yamaha dealer to make this adjustment.  The spring preload setting is determined by measuring distance A, shown in the illustration.
Page 42  Do not dispose of a damaged or worn out shock absorber assembly yourself. Take the 1. Distance A shock absorber assembly to a Yamaha deal- 4. Tighten the locknut to the specified torque. er for any service. NOTICE: Always tighten the locknut against the adjusting nut, and then tighten it to the specified torque.
Page 43 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 44 Spring preload setting: Minimum (soft): Distance A = 238.5 mm (9.39 in) Standard: Distance A = 228.5 mm (9.00 in) Maximum (hard): Distance A = 223.5 mm (8.80 in) 1. Spring preload adjusting nut 2. Locknut 3. Special wrench  The spring preload setting is determined by measuring distance A, shown in the illustration.
Page 45 Tightening torque: Rebound damping force settings: Locknut: Minimum (soft): 42 N·m (4.2 kgf·m, 31 lb·ft) 30 click(s) in direction (b) Standard: 18 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 46 Fast compression damping force settings: Slow compression damping force settings: Minimum (soft): Minimum (soft): 2 turn(s) out from the fully turned in posi- 18 click(s) in direction (b) tion Standard: Standard: 10 click(s) in direction (b) 1.25 turn(s) out from the fully turned in Maximum (hard): position 1 click(s) in direction (b)
Page 47  Do not dispose of a damaged or worn out shock absorber assembly yourself. Take the shock absorber assembly to a Yamaha deal- er for any service. EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Page 48 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 49 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, 9-34 • Check brake fluid level in reservoir, and add specified brake fluid to specified level if necessary.
Page 50 ITEM ROUTINE PAGE • Make sure that operation is smooth. Lubricate lever pivoting points Brake and clutch levers 9-41 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...
Page 51 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.
Page 52 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 27.5 kPa (0.275 kgf/cm², 4.0 psi)
Page 53 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.
Page 54 EBU19841 Front: Chassis fasteners Manufacturer/model: Make sure that all nuts, bolts and screws are MAXXIS/MS13 properly tightened. Size: AT22 x 7-10 EBU19851 Instruments, lights and switches Rear: Manufacturer/model: Check that all instruments, lights and switches are MAXXIS/M976Y working properly. Correct if necessary. Size: AT20 x 10-9 Aftermarket tires and rims...
Page 55 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...
Page 56  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 57 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.
Page 58 erly lubricated only when the engine is run- 1. Bring the ATV to a complete stop, apply the ning. Inadequate lubrication may damage clutch lever, and then shift the transmission the transmission. into first gear.  Always use the clutch when changing gears. 2.
Page 59 If the indicator light does not come on, ate it at one set throttle position. have a Yamaha dealer check the electrical circuit. 120–240 km (75–150 mi) or 8–15 hours 4. Check behind you for people or obstacles, Avoid prolonged operation above 3/4 throttle.
Page 60 EBU20922 Genuine Yamaha Accessories ing brake, and then block the front and rear Choosing accessories for your ATV is an impor- wheels with rocks or other objects. tant decision. Genuine Yamaha Accessories, which are available only from a Yamaha dealer,...
Page 61  Accessories should be rigidly and securely and accessories or offer other modifications for Yamaha vehicles. Yamaha is not in a position to mounted. An accessory which can shift position test the products that these aftermarket compa- or come off while you are riding could affect nies produce.
Page 62  If you are carrying cargo and towing a trailer, in- EBU20942 Loading clude the tongue weight in the maximum ATV EWB00821 load limit. WARNING  Load cargo on the carriers as close to the center Never exceed the stated load capacity for this of the ATV as possible.
Page 63 EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Page 64 EBU21133 RIDING YOUR ATV...
Page 65 ATV to achieve the skill necessary to Yamaha. They should then regularly practice the enjoy riding safely. Before you begin to ride, be skills learned in the course and the operating tech- sure you have read this Owner’s Manual com-...
Page 66 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 67 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 68 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 69 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 70 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 71 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 72 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.
Page 73 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 74 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 75 as a trailer hitch. WARNING! You could collide with another vehicle if operating in off-road ar- eas where you cannot easily be seen. Mount a caution flag on the ATV to make you more vis- ible. Watch carefully for other vehicles. [EWB01062] Select a large, flat area off-road to become familiar with your ATV.
Page 76 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 77 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.
Page 78  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 79 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.
Page 80 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 81  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.
Page 82 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...
Page 83 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.
Page 84 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.
Page 85 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.
Page 86 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 87  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.
Page 88 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.
Page 89 If you do not have the tools or experience required Be sure to put the Owner’s Manual in the plastic for a particular job, have a Yamaha dealer perform bag and to always carry it as well as the tool kit it for you.
Page 90  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 leakage and replace gasket(s) if neces- sary. √ √ √ Exhaust system • Check for looseness and tighten all screw clamps and joints if necessary.
Page 92  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 93 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 94 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 95 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours • Check coolant level and ATV for coolant leakage, √ √ √ √ √ and correct if necessary. Cooling system •...
Page 96  Hydraulic brake service • Regularly check and, if necessary, correct the brake fluid level. • Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid. • Replace the brake hoses every four years and if cracked or damaged.
Page 97 EWB00012 EBU23102 Panel A WARNING Indicates a hazardous situation which, if not To remove the panel avoided, could result in death or serious injury. Remove the bolts, and then take the panel off. EBU23081 Removing and installing the panel The panel shown needs to be removed to perform some of the maintenance jobs described in this chapter.
Page 98 If the spark plug shows a distinctly different color, spark plug wrench included in the tool kit. the engine could be operating improperly. Do not attempt to diagnose such problems yourself. In- stead, have a Yamaha dealer check the ATV. 9-11...
Page 99 2. Check the spark plug for electrode erosion To install the spark plug and excessive carbon or other deposits, and 1. Clean the surface of the spark plug gasket replace it if necessary. and its mating surface, and then wipe off any grime from the spark plug threads.
Page 100 To check the engine oil level 1. Park the ATV on a level surface. 2. Start the engine, warm it up until the engine oil has reached a normal temperature of 60 °C (140 °F), let it continue to idle for ten sec- onds or more, and then turn the engine off.
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-portion 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 5. Remove the engine oil tank filler cap, and then remove the engine oil tank drain bolt and its gasket. 1. Oil filter element cover 2. Bolt 7. Remove the oil filter element and the O-rings. 1. Engine oil tank drain bolt 2.
Page 103 10. Install the crankcase engine oil drain bolt, the engine oil tank drain bolt and their new gas- ket, and then tighten the bolts to the specified torques. Tightening torques: Crankcase engine oil drain bolt: 23 N·m (2.3 kgf·m, 17 lb·ft) Engine oil tank drain bolt: 19 N·m (1.9 kgf·m, 14 lb·ft) 11.
Page 104 With oil filter element replacement: Why Yamalube 1.85 L (1.96 US qt, 1.63 Imp.qt) 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 Be sure to wipe off spilled oil on any parts after the teams of specialists in the fields of mechanical en- engine and exhaust system have cooled down.
Page 105 0.25 L (0.26 US qt, 0.22 Imp.qt) Radiator (including all routes): 1.68 L (1.78 US qt, 1.48 Imp.qt) 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.
Page 106 If water has been added to the coolant, have a Yamaha dealer check [EWB02672] the antifreeze content of the coolant as soon as possible, otherwise the effective- ness of the coolant will be reduced.
Page 107 EBU23546 To change the coolant EWB01891 WARNING Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by hot fluid and steam blown out under pressure. Always place a thick rag over the cap when opening.
Page 108 5. Remove the coolant reservoir cap. 9. Connect the coolant reservoir hose. 6. Disconnect the coolant reservoir hose on the 10. Pour the recommended coolant into the res- coolant reservoir side, and then drain the ervoir to the maximum level mark, and then coolant from the coolant reservoir.
Page 109 There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air fil- ter case. 1. Air filter case cover 2.
Page 110 1. Air filter element 1. Sponge material 2. Washer 2. Air filter element frame 3. Wing bolt 8. Wash the sponge material gently but thor- 6. Remove the wing bolt and washer from the air oughly in solvent. WARNING! Always use filter element.
Page 111 10. Check the sponge material and replace it if damaged. 14. Install the washer onto the air filter element 11. Apply Yamaha foam air filter oil or other qual- frame, and then insert the wing bolt into the hole in the air filter element frame. NOTICE: ity foam air filter oil to the sponge material.
Page 112 17. Install the seat. 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 113 1. Remove the tailpipe cover by removing the bolts. 1. Bolt 2. Retainer 3. Tailpipe 1. Tailpipe cover 4. Gasket 2. Bolt 3. Tap the tailpipe lightly, and then use a wire 2. Remove the retainer by removing the bolts, brush to remove any carbon deposits from and then remove the tailpipe and gasket from the spark arrester portion of the tailpipe and...
Page 114 Tightening torque: Tailpipe cover bolt: 8 N·m (0.8 kgf·m, 5.9 lb·ft) EBU26813 Adjusting the engine idling speed The engine idling speed must be checked and, if necessary, adjusted as follows at the intervals specified in the periodic maintenance chart. A diagnostic tachometer is needed to make this 1.
Page 115 3. Locknut 4. Throttle lever free play If the specified idling speed cannot be obtained as Throttle lever free play: described above, have a Yamaha dealer make the 2.0–4.0 mm (0.08–0.16 in) adjustment. Periodically check the throttle lever free play and adjust if necessary.
Page 116 The front and rear brake pads must be checked must be adjusted by a Yamaha dealer at the inter- for wear at the intervals specified in the periodic vals specified in the periodic maintenance chart.
Page 117 If a brake pad has worn to the point that the wear indicator grooves have almost dis- appeared, have a Yamaha dealer replace the brake pads as a set. 9-30...
Page 118 Front brake (YFM70RSBP / YFM70RCBP) Rear brake 1. Minimum level mark 1. Minimum level mark (YFM70RSCP / YFM70RCCP) To check the rear brake fluid level, remove the seat. (See page 5-11.) To access the rear brake fluid reservoir for replen- ishing: 1.
Page 119 1. Quick fastener screw 1. Cowling 2. Bolt 2. Brake fluid reservoir cap 2. Pull the cowling slightly outward as shown. 3. After replenishing, place the cowling in the original position, and then install the bolt and quick fastener screw. Specified brake fluid: DOT 4 9-32...
Page 120 If the brake fluid level goes down sud- mance. denly, have a Yamaha dealer check the cause be-  Clean the filler cap before removing. Use fore further riding. only DOT 4 brake fluid from a sealed contain-...
Page 121 Brake pedal height: There should be no free play at the brake lever 15.3 mm (0.60 in) end. If there is free play, have a Yamaha dealer in- spect the brake system. Periodically check the brake pedal height. If the brake pedal is not positioned as specified, have a Yamaha dealer adjust it.
Page 122 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.
Page 123 [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...
Page 124 3. To increase the clutch lever free play, turn the EBU29753 Adjusting the clutch lever free play adjusting bolt at the clutch lever in direction (a), and to decrease it, turn the bolt in direc- tion (b). If the specified clutch lever free play could be ob- tained as described above, skip steps 4–7.
Page 125 Drive chain slack: sition. 25.0–35.0 mm (0.98–1.38 in) 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. 9-38...
Page 126 4. Hole To adjust the drive chain slack 1. Park the ATV on a level surface. A rod can be obtained at a Yamaha dealer to make 2. Loosen the rear wheel axle pinch bolts. this adjustment. 3. Insert a rod of a diameter of 8 mm (0.3 in) and a length of 10 cm (4 in) into one of the holes in 4.
Page 127 prevent this from occurring, keep the drive EBU24886 Lubricating the drive chain chain slack within the specified limits. [ECB00543] 6. Pull the rod out, and then tighten the rear axle pinch bolts to the specified torque in the or- der shown. 1.
Page 128 The operation of the brake and clutch levers essary. If a cable is damaged or does not move should be checked before each ride, and the lever smoothly, have a Yamaha dealer check or replace pivots should be lubricated if necessary. Recommended lubricant:...
Page 129 EBUM0171 Checking the shift pedal The operation of the shift pedal should be checked before each ride. If operation is not smooth, have a Yamaha dealer check the vehicle. EBU28872 Checking and lubricating the brake pedal The operation of the brake pedal should be checked before each ride, and the pedal pivot should be lubricated if necessary.
Page 130 Recommended lubricant: Lithium-soap-based grease 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 1. Grease nipple...
Page 131 For parts equipped with a grease nipple, use a grease gun. EBU25036 Lubricating the upper and lower arm pivots The upper and lower arm pivots must be lubricat- ed at the intervals specified in the periodic main- tenance chart. 1. Grease nipple Recommended lubricant: Lithium-soap-based grease 1.
Page 132 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 9-45...
Page 133 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 (together with the battery cover) by removing the quick fastener screws and the bolts.
Page 134 1. Negative battery lead (black) 1. Bolt 2. Battery 2. Battery holding plate 3. Positive battery lead (red) 3. Battery cover 4. Quick fastener screw 4. Pull the battery out of its compartment. ECB00622 3. Disconnect the negative battery lead first, NOTICE then the positive battery lead by removing Never attempt to open the battery or remove...
Page 135 2. Connect the positive battery lead first, then ECB00933 NOTICE connect the negative battery lead by installing their bolt. NOTICE: When installing the bat- To charge a VRLA (valve-regulated lead-acid) tery, the main switch must be off, and the battery, a special battery charger is required. Using a conventional battery charger will dam- positive lead must be connected before age the battery.
Page 136 EBU34663 Replacing a fuse 1. Battery holding plate 2. Battery box 1. Main fuse 4. Install the battery holding plate with the bat- 2. Spare main fuse tery cover by installing the bolts and the quick fastener screws. 5. Install the seat. (See page 5-11.) ...
Page 137 4. Turn on the main switch and start the engine. fuse. 5. If the fuse immediately blows again, have a Yamaha dealer check the vehicle. 1. Turn off all electrical systems. (See page 5-1.) 6. Install the seat. 2. Remove the seat. (See page 5-11.)
Page 138 EBU30165 Replacing a headlight bulb If a headlight bulb burns out, replace it as follows. 1. Remove the headlight unit by removing the bolt and pulling the headlight unit outward as shown. 1. Bulb cover 3. Remove the socket by pushing it in and turn- ing it counterclockwise, and then remove the burnt-out bulb.
Page 139 Thoroughly clean off 8. Adjust the headlight beam if necessary. any dirt and fingerprints using a cloth moistened with alcohol or thinner. EBU25562 [ECB00653] Adjusting a headlight beam ECB00691 NOTICE It is advisable to have a Yamaha dealer make this adjustment. 9-52...
Page 140 1. Install the wheel with the arrow mark pointing If the brake/tail light does not come on, have a in the forward rotating direction of the wheel, Yamaha dealer check it. and then install the wheel nuts. EBU25653 Removing a wheel 1.
Page 141 The following troubleshooting charts represent quick and easy procedures for checking these vi- tal systems yourself. However, should your ATV require any repair, take it to a Yamaha dealer, 1. Arrow mark whose skilled technicians have the necessary 2. Forward rotating direction tools, experience, and know-how to service the 3.
Page 142 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 143 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.
Page 144 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.
Page 145 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 146 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.
Page 147 EBU25964 SPECIFICATIONS Dimensions: Displacement: 686 cm³ Overall length: Bore × stroke: 1845 mm (72.6 in) 102.0 × 84.0 mm (4.02 × 3.31 in) Overall width: Starting system: 1155 mm (45.5 in) Electric starter Overall height: Engine oil: 1115 mm (43.9 in) Wheelbase: Recommended brand: 1280 mm (50.4 in)
Page 148 Recommended engine oil grade: Fuel tank capacity: API service SG type or higher, JASO standard MA 9.9 L (2.6 US gal, 2.2 Imp.gal) (YFM70RCBP, YFM70RCCP) 130 ˚F Fuel tank capacity: 11 L (2.9 US gal, 2.4 Imp.gal) (YFM70RSBP, SAE 5W-30 YFM70RSCP) Fuel reserve amount: SAE 10W-30...
Page 149 Rear tire: Size: AT20 x 10-9 Manufacturer/model: MAXXIS/M976Y 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: GT9B-4 Voltage, capacity: 12 V, 8.0 Ah Lights:...
Page 150 EBU25984 CONSUMER INFORMATION EBU29663 EBU40090 Vehicle Emission Control Information Emission Regulation (California) label An add-on or modified part must be compliant with applicable ARB evaporative emission control The Vehicle Emission Control Information label is standards. A violation of this requirement is pun- affixed at the location in the illustration.
Page 151 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.
Page 152 EBU36901 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...
Page 153 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 154 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.
Page 155 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 156 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...
Page 157 INDEX Drive chain slack ............9-38 Accessories and loading ..........7-6 Air filter element, cleaning ........... 9-21 Emission Regulation (California) ........12-1 Engine break-in .............. 7-5 Engine idling speed ............. 9-27 Battery ................. 9-46 Engine oil ............... 6-4 Brake and clutch levers, checking and lubricating ..9-41 Engine oil and oil filter element ........
Page 158 Shift pedal, checking ........... 9-42 Shock absorber, rear (YFM70RSBP / YFM70RCBP) ... 5-18 Main switch ..............5-1 Shock absorber, rear Maintenance chart, emission control system ....9-3 (YFM70RSCP / YFM70RCCP) ........5-21 Maintenance chart, general maintenance and Shock absorbers, front lubrication ..............9-5 (YFM70RSBP / YFM70RCBP) ........
Page 159 Warranty, limited (for USA) .......... 12-4 Wheel hub bearings, checking ........9-42 Wheel, installing ............9-53 Wheel, removing ............9-53 Yamalube ..............9-17 13-3...
Page 161 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 162 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...

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