Yamaha YFZ 50 Owner's Manual
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Yamaha YFZ 50 Owner's Manual

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READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER'S MANUAL
YFZ05YYXN
WARNING
This ATV should not be ridden by anyone under 6 years of age.
LIT-11626-35-35
BW4-F8199-15

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  • Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFZ05YYXN WARNING This ATV should not be ridden by anyone under 6 years of age. LIT-11626-35-35 BW4-F8199-15...
  • 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 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 ATV safely. Your ATV was delivered with an adjustable speed limiter. Yamaha recommends that all beginners start off to limit the amount of speed available while they learn. The adjusting screw may be gradually turned out as the beginner becomes more familiar with operating the ATV.
  • Page 5 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 6 Please check your local riding laws and regulations before operating this ATV. EBU34380 YFZ05YYXN OWNER’S MANUAL ©2022 by Yamaha Motor Corporation, U.S.A. 1st edition, May 2021 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U.S.A.

  • Page 7: Table Of Contents

    Engine stop switch with lanyard....5-2 EWB00012 WARNING Throttle lever..........5-3 Speed limiter..........5-4 Indicates a hazardous situation which, if not Front brake lever......... 5-6 avoided, could result in death or serious injury. Rear brake lever ......... 5-6 Parking brake ..........5-6 Kickstarter ..........
  • Page 8 Starting a warm engine .......7-3 Periodic maintenance chart: General Engine break-in ...........7-3 maintenance and lubrication ....9-5 Parking ............7-3 Removing and installing the panel....9-9 Parking on a slope ........7-4 Checking the spark plug......9-9 Accessories and loading ......7-5 Engine oil ..........9-11 Why Yamalube..........
  • Page 9 SPECIFICATIONS ........11-1 CONSUMER INFORMATION ....... 12-1 Vehicle Emission Control Information label............12-1 Noise regulation ........12-2 Maintenance record ........12-3 YAMAHA MOTOR CORPORATION, U.S.A. 2020 AND LATER MODEL ATV LIMITED WARRANTY ......12-4 YAMAHA EXTENDED SERVICE (Y.E.S.) ... 12-6 INDEX............13-1...

  • Page 10: Vehicle Identification

    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 11 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 12: Location Of The Warning And Specification Labels

    EBU17661 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
  • Page 13 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 14 WARNING UNDER Operation of this ATV by children under the age of 6 increases the risk of severe injury or death. Adult supervision required for children under age 16. NEVER permit children under age 6 to operate this ATV. BW4-F816L-00 BD3-F1568-00...
  • Page 15 2017 BD3-F817J-60 BD3-F151H-00 BW4-F816M-20...

  • Page 16: Safety Information

    EBU17432 SAFETY INFORMATION SAFETY INFORMATION EBU36513 – A child under 12 years old should never oper- ate an ATV with engine size greater than 70 cc. AN ATV IS NOT A TOY AND CAN BE HAZARD- – A child under 16 years old should never oper- OUS TO OPERATE.
  • Page 17  Never operate at speeds too fast for your skills  Never operate the ATV on hills too steep for the or the riding conditions. Always go at a speed ATV or for your abilities. Practice on smaller hills that is proper for the terrain, visibility, operating before attempting larger hills.
  • Page 18  Never operate an ATV in fast flowing water or in technique described in this manual on level ground. Avoid crossing the side of a steep hill if water deeper than that recommended in this possible. manual. Remember that wet brakes may have ...
  • Page 19 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 20 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 21 FOR MORE INFORMATION ABOUT ATV SAFE- proper training, and proper equipment, as well as TY, call the Consumer Products Safety Commis- an appropriately sized ATV and an appropriate rid- sion at 1-800-638-2772, or the ATV Distributor’s ing area. Safety Hotline at 1-800-852-5344. Be sure your child is ready to learn how to ride TEACHING YOUR CHILD TO OPERATE THE As a parent, your first step is to decide when your...
  • Page 22 and the Parents, Youngsters and ATVs booklet ENGINE STOP SWITCH CORD page by page with your child and be sure he or This model has an engine stop switch cord (lan- she understands how to operate the ATV properly. yard) designed for use by an adult supervising the child operating the ATV.
  • Page 23 When your child has developed sufficient skill to ence any symptoms of carbon monoxide no longer need you to follow with the cord, se- poisoning, leave the area immediately, get curely tie up the cord. However, you must still fresh air, and SEEK MEDICAL TREATMENT. ...

  • Page 25: Description

    EBU17681 DESCRIPTION EBU17691 EBU17701 Left view Right view 1. Reflector 1. Spark arrester 2. Fuel tank cap 2. Reflector 3. Fuel cock 3. Tool kit 4. Air filter 4. Fuse 5. Engine stop switch with cord (lanyard) 5. Battery 6. Rear shock absorber 6.

  • Page 26: Controls And Instruments

    EBU17715 Controls and instruments 1. Rear brake lever 2. Handlebar switches 3. Parking brake lock plate 4. Front brake lever 5. Throttle lever 6. Main switch 7. Starter (choke) lever...

  • Page 27: Instrument And Control Functions

    EBU1772C INSTRUMENT AND CONTROL FUNCTIONS EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. EBU33850 Main switch The positions of the main switch are as follows: All electrical systems are supplied with power, and the engine can be started.

  • Page 28: Handlebar Switches

    EBU18068 EBU18102 Start switch “ ” Handlebar switches Push this switch to crank the engine with the start- er. See the starting instructions on page 7-1 prior to starting the engine. EBU36341 Engine stop switch with lanyard The cap must be attached to the engine stop switch for the engine to run.

  • Page 29: Throttle Lever

     When your child has developed sufficient skill to no longer need you to follow with the lanyard, securely tie up the lanyard. However, you must still closely supervise your child at all times dur- ing ATV operation. EBU18286 Throttle lever 1.

  • Page 30: Speed Limiter

    2. To increase the maximum engine power vices. A vehicle speed limiter adjusting screw and available and the maximum speed of the ATV, a removable engine speed limiter plate. Yamaha turn the adjusting screw in direction (a). To recommends that all beginning riders start off with...
  • Page 31 1. Locknut 1. Screw 2. Adjusting screw 2. Engine speed limiter plate 3. No more than 14.5 mm (0.57 in) 3. Tighten the screws. 3. Tighten the locknut. 4. Install the panel. Engine speed limiter plate Store the engine speed limiter plate with the own- When the engine speed limiter plate is installed, er’s manual so that it is readily available whenever engine speed is limited to 5200 r/min.

  • Page 32: Front Brake Lever

    EBU18393 EBU18403 Front brake lever Rear brake lever 1. Front brake lever 1. Rear brake lever The front brake lever is located on the right han- The rear brake lever is located on the left handle- dlebar. To apply the front brake, pull the brake le- bar.

  • Page 33: Kickstarter

    braking performance which could cause an accident. You could also wear out the brakes prematurely. EBU33893 Kickstarter Use the kickstarter to start the engine when the battery voltage is low. 1. Remove the seat (page 5-13), and then re- move the kickstarter lever. 1.
  • Page 34 1. Kickstarter lever cap 1. Fold out. 2. Push down. 3. Install the kickstarter lever. 5. When the engine has started, remove the 4. Move the kickstarter lever down lightly with kickstarter lever and store it under the seat. your foot until the gears engage, and then 6.

  • Page 35: Fuel Tank Cap

    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.

  • Page 36: Fuel

    3. Wipe up any spilled fuel immediately. Recommended fuel: NOTICE: Immediately wipe off spilled fuel Regular unleaded gasoline (Gasohol [E10] with a clean, dry, soft cloth, since fuel may acceptable) deteriorate painted surfaces or plastic Fuel tank capacity: parts. [ECB00982] 5.6 L (1.5 US gal, 1.2 Imp.gal) 4.

  • Page 37: Fuel Cock

    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. EBU18821 Fuel cock The fuel cock supplies fuel from the tank to the carburetor while also filtering it.

  • Page 38: Starter (Choke)

    1. Arrow mark positioned over “ON” 1. Arrow mark positioned over “RES” With the fuel cock lever in this position, fuel flows This indicates reserve. With the fuel cock lever in to the carburetor. Turn the fuel cock lever to this this position, the fuel reserve is made available.

  • Page 39: Seat

    EBU36431 Seat To remove the seat 1. Starter (choke) lever To use the starter (choke) and enrich the air-fuel ratio, move the starter (choke) lever in direction (a). To decrease the starter (choke) or turn it off, move 1. Seat the starter (choke) lever in direction (b).

  • Page 40: Rear Shock Absorber

    To install the seat ECB01091 NOTICE Never turn the adjusting mechanism beyond the minimum and maximum settings. 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- crease the spring preload and thereby soften the suspension.
  • Page 41 A special wrench can be obtained at a Yamaha dealer to make this adjustment. EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury. 1. Special wrench Spring preload setting: Minimum (soft): Standard:...

  • Page 42: Pre-Operation Checks

    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 43 ITEM ROUTINE PAGE • Make sure that operation is smooth. Lubricate cable and lever Throttle lever housing if necessary. 6-3, 9-22 • Check lever free play, and adjust if necessary. Control cables • Make sure that operation is smooth. Lubricate if necessary. 9-29 •...

  • Page 44: Fuel

    Make sure that the engine oil is at the specified Check the operation of the throttle lever. It must level. Add oil as necessary. (See page 9-11.) open smoothly and spring back to the idle position when released. Have a Yamaha dealer correct if EBU34490 necessary. Transmission oil...
  • Page 45 Tire pressure Tire pressure gauge Use a tire pressure gauge to check and adjust tire air pressure when the tires are cold. The tire air pressure must equal both sides. WARNING! Operation of this vehicle with im- proper tire pressure may cause severe injury or death from loss of control or rollover.
  • Page 46 After extensive tests, only the tires list- braking, and comfort. Other tires, rims, sizes, and ed below are approved for this model by Yamaha. combinations may not be appropriate. EWB02552...

  • Page 47: Chassis Fasteners

    EBU19841 Chassis fasteners Make sure that all nuts, bolts and screws are properly tightened. EBU33810 Instruments and switches Check that all instruments and switches are work- ing properly. Correct if necessary.

  • Page 48: Operation

    Read the Owner’s Manual carefully before riding the ambient temperature. the ATV. If there is a control or function you do not Position (1): understand, ask your Yamaha dealer. Cold engine start with ambient temperature EWB00632 below 5 °C (40 °F).
  • Page 49  If the engine fails to start using the start switch, Ambient temp./starter (choke) position try using the kickstarter. (See page 5-7.) 6. If the engine is started with the starter (choke) lever in position (1), move the lever to position (2) to warm up the engine.

  • Page 50: Starting A Warm Engine

    240 km (150 mi) or 15 engine break-in period, immediately have a hours of operation. For this reason, you should fol- Yamaha dealer check the ATV. low the engine break-in instructions carefully. Since the engine is brand new, do not put an ex-...

  • Page 51: Parking On A Slope

    Never park the ATV on hills that are too steep to walk up easily. 1. Bring the ATV to a stop by applying the brakes. 2. Stop the engine. 3. With the rear brake lever applied, apply the parking brake, and then slowly release the rear brake lever.

  • Page 52: Accessories And Loading

    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 53  If you are carrying cargo and towing a trailer, in- EBU33880 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 54 EWB00012 WARNING Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

  • Page 55: Riding Your Atv

    EBU21133 RIDING YOUR ATV...

  • Page 56: Getting To Know Your Atv

    RIDE WITH CARE AND GOOD JUDGMENT EWB00012 WARNING Beginning riders should get training from a Indicates a hazardous situation which, if not certified instructor. avoided, could result in death or serious injury. EWB01382 WARNING EBU21505  Do not operate this ATV or allow anyone else to operate it without proper instruction.
  • Page 57 Riding your ATV requires skills acquired through practice over a period of time. Become familiar with riding this ATV by riding at slow speeds first, even if you have experience rid- ing other ATVs. Do not attempt to operate it at higher performance levels until you are familiar with this ATV’s handling and performance charac- teristics.
  • Page 58 This ATV is designed to carry the operator only Apparel – passengers prohibited. Always wear the following to reduce risk of injury The long seat is to allow the operator to shift posi- in an accident:  Approved motorcycle helmet that fits properly tion as needed during operation.
  • Page 59 1. Protective clothing Pre-operation checks 2. Goggles Always inspect your ATV before use to make sure 3. Gloves that it is safe operating condition. Perform the pre- 4. Boots 5. Helmet operation checks listed on page 6-1. Follow the maintenance schedules and procedures as de- Do not operate after or while consuming alco- scribed in the “Periodic Maintenance and Adjust- hol or drugs.
  • Page 60 (See page 5-4.) This model also has an engine speed limiter plate to limit the amount of engine power available. Yamaha recommends that all beginning riders start off with the engine speed limiter plate in- stalled and the vehicle speed limiter adjusting screw turned in to limit the amount of speed avail- able while they learn.
  • Page 61  Make sure the load does not interfere with During operation your control or ability to see where you are Always keep your feet on the footboards during going. operation; otherwise, they may contact the rear  Reduce speed and allow more room to stop. wheels.
  • Page 62 ATV should the engine has stopped. To reduce the risk of fire be genuine Yamaha or equivalent components during operation or after leaving the ATV, do not designed for use on this ATV and should be in-...

  • Page 63: Be Careful Where You Ride

    the vehicle, near the muffler or exhaust pipe, or BE CAREFUL WHERE YOU RIDE next to other hot parts. Check under the vehicle This ATV is designed for off-road use only. after operating in areas where combustible mate- WARNING! Paved surfaces may seriously af- rials may have collected.
  • Page 64 ate ATVs on public streets, roads and highways. ful when operating on unfamiliar terrain. Al- WARNING! Never operate this ATV on any pub- ways be alert to changing terrain conditions lic street, road or highway, even a dirt or gravel when operating the ATV.
  • Page 65 Do not ride in areas posted “no trespassing”. When riding in an area where you might not easily Do not ride on private property without getting be seen, such as desert terrain, mount a caution permission. flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch.

  • Page 66: Turning Your Atv

    abruptly, the vehicle may lurch forward or the front wheels may lift off the ground, resulting in a loss of directional control. Avoid higher speeds until you are thoroughly familiar with the operation of your ATV. When slowing down or stopping, release the throttle and apply the brakes smoothly and evenly.
  • Page 67 ing technique must be used to allow the ATV to make turns quickly and easily. It is essential that this skill be learned first at low speed. As you approach a curve, slow down and begin to turn the handlebars in the desired direction. As you do so, put your weight on the footboard to the outside of the turn (opposite your desired direc- tion) and lean your upper body into the turn.

  • Page 68: Climbing Uphill

     Shift your weight forward. Once you have learned this technique, you should  Never open the throttle suddenly. The ATV be able to perform it at higher speeds or in tighter curves. could flip over backwards.  Never go over the top of any hill at high Improper riding procedures such as abrupt throt- tle changes, excessive braking, incorrect body speed.
  • Page 69 Do not attempt to climb hills until you have mas- tered basic maneuvers on flat ground. Always check the terrain carefully before attempting any hill. In all cases avoid inclines with slippery or loose surfaces, or obstacles that might cause you to lose control.
  • Page 70 on steeper inclines, standing on the footboards ATV on the uphill side or to the left-hand side and leaning forward over the handlebars. When- when the ATV is pointed straight uphill. If possible, ever possible, ride straight up hills. get help to turn the ATV around and then remount Slow down when you reach the crest of the hill if it when safe and ride downhill carefully as ex- you cannot see clearly what is on the other side –...

  • Page 71: Riding Downhill

    RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as pos- EWB01132 WARNING sible. Move back on the seat and sit with your arms straight. Engine compression will do most of Going down a hill improperly could cause over- turns or loss of control.

  • Page 72: Crossing A Slope

     Never attempt to turn the ATV around on any hill until you have mastered the turning tech- nique as described in the Owner’s Manual on level ground. Be very careful when turning on any hill. Traversing a sloping surface on your ATV requires you to properly position your weight to maintain proper balance.

  • Page 73: Crossing Through Shallow Water

    The ATV can be used to cross slow moving, shal- low water of up to a maximum of 11 cm (4 in) in depth. Before entering the water, choose your path carefully. Enter where there is no sharp drop off, and avoid rocks or other obstacles which may be slippery or upset the ATV.

  • Page 74: Riding Over Rough Terrain

    braking ability. WARNING! Wet brakes may have reduced stopping ability, which could cause loss of control. [EWB02622] 1. Air filter case check hose RIDING OVER ROUGH TERRAIN EWB01652 WARNING After riding your ATV in water, be sure to drain the Riding improperly over obstacles could cause trapped water by removing the check hose at the loss of control or a collision.

  • Page 75: Sliding And Skidding

    accident. Be sure to keep your feet firmly mounted To reduce the tendency for the front wheels to on the footboards at all times. Avoid jumping the slide in loose or slippery conditions, positioning ATV as loss of control and damage to the ATV may your weight over the front wheels will sometimes result.

  • Page 76: What To Do If

    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 footboard to the outside of the turn.
  • Page 77  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 78: Periodic Maintenance And Adjustment

    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 79: Owner's Manual And Tool Kit

     If you do not have the tools or experience re- EBU33902 Owner’s Manual and tool kit quired for a particular job, have a Yamaha deal- Place the Owner’s Manual in a plastic bag, and er perform it for you.

  • Page 80: Periodic Maintenance Chart: Emission Control System

     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 81 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 82: Periodic Maintenance Chart: General Maintenance And Lubrication

     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 83 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours • Check runout and for damage, and replace if nec- √ √ √ √ Wheels essary. • Check tread depth and for damage, and replace if necessary.
  • Page 84 INITIAL EVERY month Whichev- CHECK OR MAINTENANCE ITEM er comes 1300 2500 2500 5000 km (mi) first (150) (800) (1600) (1600) (3200) hours • Check operation and repair or replace if dam- √ √ √ √ √ Steering system aged. •...
  • Page 85 EBU23062 Some maintenance items need more frequent service if you are riding in unusually wet, dusty, sandy or muddy areas, or at full-throttle.

  • Page 86: Removing And Installing The Panel

    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 87 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. 9-10...

  • Page 88: Engine Oil

    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 89 To check the engine oil level 1. Park the ATV on a level surface. 2. Wait for the engine to cool. If the engine was started before checking the oil level, wait 10 minutes. This will allow oil to settle into the crankcase for an accurate reading.
  • Page 90 2. Start the engine, warm it up for several min- 5. Clean the oil strainer with solvent. utes, and then turn it off. 6. Discard the old engine oil drain bolt O-ring, 3. Place an oil pan under the engine to collect and then apply a thin coat of clean engine oil the used oil.

  • Page 91: Why Yamalube

    EBU38620 Why Yamalube Be sure to wipe off spilled oil on any parts after the YAMALUBE oil is a Genuine YAMAHA Part born of engine and exhaust system have cooled down. the engineers’ passion and belief that engine oil is an important liquid engine component.

  • Page 92: Transmission Oil

    The transmission case must be checked for oil leakage before each ride. If any leakage is found, have a Yamaha dealer check and repair the ATV. In addition, the transmission oil must be changed at the intervals specified in the periodic mainte- nance chart.

  • Page 93: Cleaning The Air Filter Element

    Recommended oil: See page 11-1. Oil quantity: 0.35 L (0.37 US qt, 0.31 Imp.qt) 7. Check the oil filler cap O-ring for damage, and replace it if necessary. 8. Install and tighten the oil filler cap. 9. Check the transmission case for oil leakage. If oil is leaking, check for the cause.
  • Page 94 1. Air filter case check hose 1. Air filter case cover 2. Air filter case cover holder 1. Park the ATV on a level surface. 4. Remove the air filter element, and clean it with 2. Remove the seat. (See page 5-13.) solvent.
  • Page 95 5. Squeeze the excess solvent out of the air filter element and let it dry. NOTICE: Do not twist 7. Apply Yamaha foam air filter oil or other qual- ity foam air filter oil to the element. the air filter element when squeezing it.

  • Page 96: Cleaning The Spark Arrester

    ment removed. This will allow unfiltered air dusty areas. When servicing the air filter element, to enter the engine, causing rapid engine be sure to check the air inlet of the air filter case wear and possible engine damage. Addi- for obstructions.

  • Page 97: Adjusting The Carburetor

    Sparks or exhaust particulate can phisticated adjustment. Therefore, most carbure- cause eye injury, burns, or start a fire. tor adjustments should be left to a Yamaha dealer, 1. Remove the tailpipe bolts. who has the necessary professional knowledge 2. Remove the tailpipe by pulling it out of the and experience.
  • Page 98 1600–1800 r/min tle stop screw in direction (a), and to decrease it, turn the screw in direction (b). If the specified idling speed cannot be obtained as described above, have a Yamaha dealer make the adjustment. 9-21...

  • Page 99: Adjusting The Throttle Lever Free Play

    1. Rubber cover prevent this from occurring, the valve clearance 2. Throttle lever free play adjusting nut must be adjusted by a Yamaha dealer at the inter- 3. Locknut 4. Throttle lever free play vals specified in the periodic maintenance chart.

  • Page 100: Checking The Front And Rear Brake Shoes

    EWB02572 WARNING Operating with improperly serviced or adjust- ed brakes could lead to a loss in braking ability and an accident. EBU34512 Checking the front and rear brake shoes The front and rear brake shoes must be checked for wear at the intervals specified in the periodic 1.

  • Page 101: Adjusting The Front Brake Lever Free Play

    EBU24334 Adjusting the front brake lever free play 1. Rear brake lever free play adjusting nut 2. Bolt 3. No more than 18 mm (0.71 in) 1. Front brake lever free play Front brake lever free play: 9.3–13.3 mm (0.37–0.52 in) Periodically check the front brake lever free play and adjust if necessary.
  • Page 102 a=a´ a´ 1. Upper locknut 1. Cable joint 2. Upper adjusting bolt 6. Tighten the upper locknut. 3. Lower locknut 4. Lower adjusting bolt After adjusting the brake lever free play, check the 4. Tighten the lower locknut. front brake shoes for wear. 5.

  • Page 103: Adjusting The Rear Brake Lever Free Play

    EBU33784 Adjusting the rear brake lever free play 1. Rear brake lever free play adjusting nut 1. Rear brake lever free play After adjusting the brake lever free play, check the Rear brake lever free play: rear brake shoes for wear. 7.6–12.9 mm (0.30–0.51 in) EBU34014 Periodically check the rear brake lever free play...
  • Page 104 To check the drive chain slack 1. Place the ATV on a level surface. 2. Move the ATV back and forth to locate the tightest portion of the drive chain, and then measure the drive chain slack as shown. Drive chain slack: 6.0–12.0 mm (0.24–0.47 in) 1.
  • Page 105 4. To tighten the drive chain, turn the drive chain slack adjusting nut in direction (a). To loosen the drive chain, turn the adjusting nut in direc- tion (b) and push the rear wheels forward. NOTICE: Improper drive chain slack will overload the engine as well as other vital parts of the ATV and can lead to drive chain slippage or breakage.

  • Page 106: Cleaning And Lubricating The Drive Chain

     Inspect cables frequently and replace if damaged. Corrosion can result when the ca- For a thorough cleaning, have a Yamaha dealer re- ble sheaths become damaged, and cables move the drive chain and soak it in solvent.

  • Page 107: Checking And Lubricating The Front And Rear Brake Levers

    The front and rear wheel hub bearings must be checked at the intervals specified in the periodic maintenance chart. If there is play in a wheel hub or if a wheel does not turn smoothly, have a Yamaha dealer check the wheel hub bearings. 9-30...

  • Page 108: Lubricating The Front Arm Pivots

    1. Grease nipple EBU36392 Lubricating the front arm pivots The front arm pivots must be lubricated at the in- For parts equipped with a grease nipple, use a tervals specified in the periodic maintenance grease gun. chart. Recommended lubricant: EBU28826 Lubricating the front knuckle pivots Lithium-soap-based grease The front knuckle pivots must be lubricated at the...

  • Page 109: Lubricating The Steering Shaft

    (valve-regulated lead-acid) battery. There is no The steering shaft must be lubricated by a need to check the electrolyte or to add distilled Yamaha dealer at the intervals specified in the pe- water. However, the battery lead connections riodic maintenance chart.
  • Page 110 1. Remove panel A. (See page 9-9.) hands after handling. 2. Unhook the battery band.  It is recommended to have the battery serviced by a Yamaha dealer. EWB02161 WARNING Battery electrolyte is poisonous and danger- ous, as it contains sulfuric acid, which can cause severe burns.
  • Page 111 4. Pull the battery out of its compartment. ECB00942 NOTICE ECB00622 NOTICE  Always keep the battery charged. Storing the Never attempt to open the battery or remove battery in a discharged state for an extended the battery cell seals, as this would permanent- period of time will cause permanent battery ly damage the battery.

  • Page 112: Replacing The Fuse

    EBU36415 Replacing the fuse 1. Positive battery lead (red) 2. Negative battery lead (black) 1. Fuse 3. Hook the battery band. 2. Spare fuse 4. Install the panel. If an electrical problem is suspected, check the fuse and replace it if necessary as follows. ...

  • Page 113: Removing A Wheel

    3. Elevate the ATV and place a suitable stand 5. Install the panel. under the frame. 6. If the fuse immediately blows again, have a 4. Remove the bolts from the wheel. Yamaha dealer check the vehicle. 5. Remove the wheel. EBU34030 Removing a wheel EBU34042 Installing a wheel 1.

  • Page 114: Troubleshooting

    The following troubleshooting chart represents a quick and easy procedure for checking these vital systems yourself. However, should your ATV re- quire any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, ex- 1. Arrow mark perience, and know-how to service the ATV prop- 2.

  • Page 115: Troubleshooting Chart

    Have a Yamaha dealer check the ATV. Check the compression. 4. Compression There is compression. The engine does not start. Have a Yamaha dealer check the ATV. Operate the electric starter. Have a Yamaha dealer check the ATV. There is no compression.

  • Page 116: Cleaning And Storage

    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 117: Storage

    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 118 e. Install the spark plug and the spark plug cap. 6. Lubricate all control cables and the pivoting points of all levers. 7. 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.) 8.

  • Page 119: Specifications

    EBU25964 SPECIFICATIONS Dimensions: Displacement: 49 cm³ Overall length: Bore × stroke: 1250 mm (49.2 in) 39.0 × 41.4 mm (1.54 × 1.63 in) Overall width: Starting system: 820 mm (32.3 in) Electric starter and kickstarter Overall height: Engine oil: 770 mm (30.3 in) Wheelbase: Recommended brand: 830 mm (32.7 in)
  • Page 120 Recommended engine oil grade: Fuel reserve amount: API service SG type or higher, JASO standard MA 0.7 L (0.18 US gal, 0.15 Imp.gal) Carburetor: 130 ˚F Type × quantity: VM12 × 1 SAE 5W-30 Front tire: Size: SAE 10W-30 AT16x6.5-7 SAE 10W-40 Manufacturer/model: SAE 15W-40...
  • Page 121 Battery: Model: GTX5L-BS Voltage, capacity: 12 V, 4.0 Ah 11-3...

  • Page 122: Consumer Information

    EBU25983 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.

  • Page 123: Noise Regulation

    EBU26061 Noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.

  • Page 124: Maintenance Record

    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...

  • Page 125: Yamaha Motor Corporation, U.s.a. 2020 And Later Model Atv Limited Warranty

    EBU30972 YAMAHA MOTOR CORPORATION, U.S.A. 2020 AND LATER MODEL ATV LIMITED WARRANTY 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: OTHER WARRANTY...
  • Page 126 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 127: Yamaha Extended Service (Y.e.s.)

    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 128 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 129: Index

    INDEX Accessories and loading ..........7-5 Front and rear brake shoes, checking ......9-23 Air filter element, cleaning ........... 9-16 Front arm pivots, lubricating ........9-31 Front knuckle pivots, lubricating ......... 9-31 Fuel ...............5-10, 6-3 Battery ................. 9-32 Fuel cock ..............5-11 Brake lever free play, adjusting the front .....
  • Page 130 Panel, removing and installing ........9-9 Warranty, extended ............12-6 Parking ................7-3 Warranty, limited ............12-4 Parking brake ..............5-6 Wheel hub bearings, checking ........9-30 Parking on a slope ............7-4 Wheel, installing ............9-36 Part locations ..............4-1 Wheel, removing ............9-36 Riding your ATV .............8-1 Yamalube ..............
  • Page 131 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 132 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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