Manuale d’uso / di manutenzione del prodotto YFM125GW del fabbricante Yamaha
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This A This ATV should not be ridden by anyone under 16 years of age. OWNER’S MANUAL LIT -1 1626-20-07 1C5-28199-13 YFM125GW WARNING READ THIS MANUAL CAREFULLY! It contains important safety information.
EBU17091.
EBU17170 INTRODUCTION EBU17270 Congratulations on your purchase of the Yamaha YFM125GW. This ATV represents the result of many years of Yamaha experience in the production of fine sporting, touring, and pace-setting racing machines.
EBU17330 IMPORTANT MANUAL INFORMATION EBU17341 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: * Product and specifications are subject to change without notice.
EBU17350 IMPORTANT NOTICE EBU17360 Welcome to the Yamaha world of motor sports! This ATV is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this ATV on any public street, road or highway.
W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU17420 TABLE OF CONTENTS SAFETY INFORMATION .............................. 1-1 LOCATION OF THE WARNING AND SPECIFICATION LABELS ............................
Starting a warm engine ............................. 6-3 Operating the drive select lever and driving in reverse ..................................... 6-3 Engine break-in ......................................... 6-4 Parking ..........................
Replacing a headlight bulb ...................... 8-44 Adjusting a headlight beam ..................... 8-46 Replacing the tail/brake light bulb ........... 8-47 Removing a wheel ................................... 8-48 Installing a wheel ............
1-1 1 2 3 4 5 6 7 8 9 10 11 EBU17430 SAFETY INFORMATION EBU17442 AN ATV IS NOT A TOY AND CAN BE HAZARD- OUS TO OPERATE. An ATV handles differently from other vehicles, in- cluding motorcycles and cars.
1-2 1 2 3 4 5 6 7 8 9 10 11 that is proper for the terrain, visibility, operating conditions, and your experience. ● Never attempt wheelies, jumps, or other stunts. ● Always inspect your ATV each time you use it to make sure it is in safe operating condition.
1-3 1 2 3 4 5 6 7 8 9 10 11 ing, use the proper gear and maintain a steady speed when climbing a hill. If you stall or roll backwards, follow the special procedure for braking described in this manual. Dismount on the uphill side or to a side if pointed straight up- hill.
1-4 1 2 3 4 5 6 7 8 9 10 11 EWB00021 EWB00030 W ARNING POTENTIAL HAZARD Improper handling of gasoline. WHAT CAN HAPPEN Gasoline can catch fire and you could be burned. HOW TO AVOID THE HAZARD Always turn off the engine when refueling. Do not refuel right after the engine has been running and is still very hot.
1-5 1 2 3 4 5 6 7 8 9 10 11 WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death with- in a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with ad- equate ventilation.
2-1 1 2 3 4 5 6 7 8 9 10 11 EBU17660 LOCATION OF THE WARNING AND SPECIFICATION LABELS 6 8 2 3 78 1 4 5.
2-2 1 2 3 4 5 6 7 8 9 10 11 EBU17670 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 replace- ment label from your Yamaha dealer.
2-3 1 2 3 4 5 6 7 8 9 10 11 5YT -2151E-30 DRIVE SELECT LEVER 8 Read owner ’ s man ual carefully bef ore operating. 8 When shifting the drive select le ver , alwa ys be sure to stop the A TV and apply the rear brak e. 5kg 1 1lbs 3LD-24877-A0 10kg 22lbs 1C5-24877-A0 sit here.
3-1 1 2 3 4 5 6 7 8 9 10 11 EBU17680 DESCRIPTION EBU17690 Left view EBU17700 Right view 1. F ront carrier 2. Starter (choke) 3. Fuel coc k 4. T ail/brak e light 5. Rear carrier 6. Spark arrester 7. F ootboard 12 3 4 5 6 7 1. Seat 2. Drive select le ver 3.
3-2 1 2 3 4 5 6 7 8 9 10 11 EBU17712 Controls and instruments NO TE: The ATV you have purchased may differ slightly from the figures shown in this manual. 1. Rear brake le v er 2. P arking brak e 3. Rev erse indicator light 4. Neutral indicator light 5.
4-1 1 2 3 4 5 6 7 8 9 10 11 EBU17720 INSTRUMENT AND CONTROL FUNCTIONS W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU17740 Main switch The positions of the main switch are as follows: ON All electrical systems are supplied with power, and the engine can be started.
4-2 1 2 3 4 5 6 7 8 9 10 11 EBU17790 Indicator lights EBU17830 Reverse indicator light “” This indicator light comes on when the transmis- sion is in the reverse position. EBU17860 Neutral indicator light “” This indicator light comes on when the transmis- sion is in the neutral position.
4-3 1 2 3 4 5 6 7 8 9 10 11 EBU18090 Start switch “ START ” Push this switch to crank the engine with the start- er. CAUTION: ECB00050 See the starting instructions on page 6-1 prior to starting the engine. EBU18140 Light switch “ LIGHTS ” Set this switch to “ LO ” to turn on the low beams and the taillight.
4-4 1 2 3 4 5 6 7 8 9 10 11 EWB00200 EBU18311 Speed limiter Your ATV was delivered with an adjustable speed limiter. The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. 1. Loosen the locknut.
4-5 1 2 3 4 5 6 7 8 9 10 11 EBU18391 Front brake lever The front brake lever is located on the right handle- bar. To apply the front brake, pull the brake lever toward the handlebar grip. EBU18401 Rear brake lever The rear brake lever is located on the left handle- bar.
4-6 1 2 3 4 5 6 7 8 9 10 11 EBU18450 Parking brake Use the parking brake before starting the engine or parking the ATV, especially on a slope. Apply the rear brake lever and push down the lock plate to apply the parking brake. Squeeze the rear brake lever to release the parking brake.
4-7 1 2 3 4 5 6 7 8 9 10 11 EBU18581 Drive select lever The drive select lever is used to shift your ATV into the forward, neutral and reverse positions. See the “ Operating the drive select lever and driving in re- verse ” section on page 6-3 for the drive select lever operation.
4-8 1 2 3 4 5 6 7 8 9 10 11 EBU18730 Fuel Make sure that there is sufficient fuel in the tank. Fill the fuel tank to the bottom of the filler tube as shown. CAUTION: ECB00070 Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston 1.
4-9 1 2 3 4 5 6 7 8 9 10 11 rings, as well as to the exhaust system. Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane number [(R+M)/2] of 86 or higher, or a research oc- tane number of 91 or higher. If knocking or pinging occurs, use a different brand of gasoline or premi- um unleaded fuel.
4-10 1 2 3 4 5 6 7 8 9 10 11 OFF With the fuel cock lever in this position, fuel will not flow. Always turn the fuel cock lever to this position when the engine is not running. ON With the fuel cock lever in this position, fuel flows to the carburetor.
4-11 1 2 3 4 5 6 7 8 9 10 11 RES This indicates reserve. With the fuel cock lever in this position, the fuel reserve is made available. Turn the fuel cock lever to this position if you run out of fuel while riding.
4-12 1 2 3 4 5 6 7 8 9 10 11 To install the seat Insert the projections on the front of the seat into the seat holders and push down on the seat at the rear. NO TE: Make sure that the seat is securely fitted. EBU18960 Front carrier ● Do not exceed the load limit of 5.
4-13 1 2 3 4 5 6 7 8 9 10 11 (231 lb) for the ATV. W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death..
5-1 1 2 3 4 5 6 7 8 9 10 11 EBU19200 PRE-OPERATION CHECKS EBU19210 Pre-operation check list Before operating this ATV, be sure to check the items listed in the following table. NO TE: The maintenance of some items in the table has to be performed by a Yamaha dealer.
5-2 1 2 3 4 5 6 7 8 9 10 11 EWB00470 Control cables ● Make sure that operation is smooth. Lubricate if necessar y . 8-37 Drive chain ● Check chain slac k, and adjust if necessar y . ● Check chain condition. Lubricate if necessar y . 5-4, 8-33, 8-36 Wheels and tires ● Check wheel condition, and replace if damaged.
5-3 1 2 3 4 5 6 7 8 9 10 11 EBU19530 Fuel Make sure that there is sufficient fuel in the tank. (See page 4-8.) EWB00500 EBU19560 Engine oil Make sure that the engine oil is at the specified lev- el. Add oil as necessary. (See page 8-10.) EBU19580 Transmission oil Make sure that the transmission oil is at the speci- fied level.
5-4 1 2 3 4 5 6 7 8 9 10 11 EBU19761 Throttle lever Check the operation of the throttle lever. It must open smoothly and spring back to the idle position when released. Have a Yamaha dealer correct if necessary. EBU19770 Drive chain Check the condition of the drive chain and check the drive chain slack.
5-5 1 2 3 4 5 6 7 8 9 10 11 EBU19781 Tires EWB00561 W ARNING POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire pressure. WHAT CAN HAPPEN Use of improper tires on this ATV, or opera- tion of this ATV with improper or uneven tire pressure, may cause loss of control, increas- ing your risk of accident.
5-6 1 2 3 4 5 6 7 8 9 10 11 EBU19820 Measuring the tire pressure Use the low-pressure tire gauge. NO TE: The low-pressure tire gauge is included as stan- dard equipment. Make two measurements of the tire pressure and use the second reading. Dust or dirt in the gauge could cause the first reading to be incorrect.
5-7 1 2 3 4 5 6 7 8 9 10 11 EBU19830 Tire wear limit Replace the tire when the tire groove decreases to 3 mm (0.12 in). EBU19840 Chassis fasteners Make sure that all nuts, bolts and screws are prop- erly tightened. EBU19850 Instruments, lights and switches Check that all instruments, lights and switches are working properly.
6-1 1 2 3 4 5 6 7 8 9 10 11 EBU19870 OPERATION W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU19890 EWB00610 EBU20061 Starting a cold engine EWB00620 CAUTION: ECB00150 See the “ Engine break-in ” section on page 6-4 prior to operating the engine for the first time.
6-2 1 2 3 4 5 6 7 8 9 10 11 on. If the indicator light does not come on, have a Yamaha dealer check the electrical cir- cuit. NO TE: The engine can be started only when the drive se- lect lever is in the neutral position.
6-3 1 2 3 4 5 6 7 8 9 10 11 attempt. 7. If the engine is started with the starter (choke) in position (1), the starter (choke) should be returned to position (2) to warm up the engine. If the engine is started with the starter (choke) in position (2), keep the starter (choke) in this position to warm up the engine.
6-4 1 2 3 4 5 6 7 8 9 10 11 3. Open the throttle lever gradually. Shifting: Reverse 1. Bring the ATV to a complete stop. 2. Apply the parking brake. 3. Shift from neutral to reverse and vice versa by moving the drive select lever along the shift guide.
6-5 1 2 3 4 5 6 7 8 9 10 11 your engine than the first 20 hours of riding. For this reason, you should read the following material carefully. Since the engine is brand new, do not put an ex- cessive load on it for the first 20 hours. The various parts in the engine wear and polish themselves to the correct operating clearances.
6-6 1 2 3 4 5 6 7 8 9 10 11 EBU20730 Parking on a slope EWB00760 1. Bring the ATV to a stop by applying the brakes in the forward position. 2. Stop the engine. 3. With the rear brake applied, apply the parking brake. EBU20910 Accessories and loading EBU20920 Accessories Accessories can affect the handling and control of your ATV.
6-7 1 2 3 4 5 6 7 8 9 10 11 ity or suitability. Choose a genuine Yamaha ac- cessory, or one that is equivalent in design and quality. ● Accessories should be rigidly and securely mounted. An accessory which can shift position or come off while you are riding could affect your ability to control the ATV.
6-8 1 2 3 4 5 6 7 8 9 10 11 takes longer to stop. ● Avoid making sharp turns unless at very slow speeds. ● Avoid hills and rough terrain. Choose terrain carefully. Added weight affects the stability and handling of the ATV. EWB00750 W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death.
7-1 1 2 3 4 5 6 7 8 9 10 11 EBU21131 RIDING YOUR ATV.
7-2 1 2 3 4 5 6 7 8 9 10 11 W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU21292 GETTING TO KNOW YOUR ATV This ATV is for recreation and utility use. This sec- tion, Riding your ATV, provides general ATV riding instructions for recreational riding.
7-3 1 2 3 4 5 6 7 8 9 10 11 Riding your ATV requires skills acquired through practice over a period of time. Take the time to learn the basic techniques well before attempting more difficult maneuvers. Not recommended for children under 16 years of age.
7-4 1 2 3 4 5 6 7 8 9 10 11 EWB00910 W ARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/or your passen- ger. HOW TO AVOID THE HAZARD Never carry a passenger.
7-5 1 2 3 4 5 6 7 8 9 10 11 Apparel EWB00920 W ARNING POTENTIAL HAZARD Operating this ATV without wearing an ap- proved motorcycle helmet, eye protection and protective clothing. WHAT CAN HAPPEN Operating without an approved motorcycle helmet increases your chances of a severe head injury or death in the event of an acci- dent.
7-6 1 2 3 4 5 6 7 8 9 10 11 Do not operate after consuming alcohol or drugs. The operator ’ s performance capability is reduced by the influence of alcohol or drugs. EWB00930 Pre-operation checks Always perform the pre-operation checks listed on page 5-1 before riding for proper care of the ATV and to ensure safety.
7-7 1 2 3 4 5 6 7 8 9 10 11 EWB00950 W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. Do not operate at speeds too fast for your skills or the conditions. EWB00960 Speed limiter For riders less experienced with this model, the throttle lever housing is equipped with a speed lim- iter.
7-8 1 2 3 4 5 6 7 8 9 10 11 Loading and accessories Use extra caution when riding the ATV with addi- tional loads, such as accessories or cargo. The ATV ’ s handling may be adversely affected. Re- duce your speed when adding additional loads. EWB00970 1.
7-9 1 2 3 4 5 6 7 8 9 10 11 During operation Always keep your feet on the footboards during op- eration, otherwise they may contact the rear wheels. HOW TO AVOID THE HAZARD Never exceed the stated load capacity for this ATV. Cargo should be properly distributed and se- curely attached.
7-10 1 2 3 4 5 6 7 8 9 10 11 EWB00980 Avoid wheelies and jumping. You may lose control of the ATV or overturn. EWB00990 Modifications EWB01000 W ARNING POTENTIAL HAZARD Removing hands from handlebars or feet from footboards during operation.
7-11 1 2 3 4 5 6 7 8 9 10 11 Exhaust system The exhaust system on the ATV is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the ATV in a place where pedestrians or children are not likely to touch it.
7-12 1 2 3 4 5 6 7 8 9 10 11 BE CAREFUL WHERE YOU RIDE This ATV is designed for off-road use only. Riding on paved surfaces can cause loss of control. EWB01020 Do not ride on any public road, street, or highway. Riding on public roads can result in collisions with other vehicles.
7-13 1 2 3 4 5 6 7 8 9 10 11 EWB01030 Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden hazards which may cause the ATV to upset. EWB01040 W ARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways.
7-14 1 2 3 4 5 6 7 8 9 10 11 EWB01050 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. W ARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain.
7-15 1 2 3 4 5 6 7 8 9 10 11 EWB01060 Do not ride in areas posted “ no trespassing ” . Do not ride on private property without getting per- mission. Select a large, flat area off-road to become familiar with your ATV. Make sure that this area is free of obstacles and other riders.
7-16 1 2 3 4 5 6 7 8 9 10 11 hot when riding and afterwards; do not allow skin or clothing to come in contact with these compo- nents. With the engine idling, return the starter knob to the closed position and shift the drive select lever into the forward position.
7-17 1 2 3 4 5 6 7 8 9 10 11 This procedure should be practiced at slow speed many times in a large off-road area with no obsta- cles. If an incorrect technique is used, your ATV may continue to go straight. If the ATV doesn ’ t turn, come to a stop and then practice the proce- dure again.
7-18 1 2 3 4 5 6 7 8 9 10 11 EWB01090 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 footboards and leaning forward over the handlebars.
7-19 1 2 3 4 5 6 7 8 9 10 11 If you are climbing a hill and you find that you have not properly judged your ability to make it to the top, you should turn the ATV around while you still have forward motion (provided you have the room to do so) and go down the hill.
7-20 1 2 3 4 5 6 7 8 9 10 11 If your ATV has stalled or stopped and you believe you can continue up the hill, restart carefully to make sure you do not lift the front wheels which could cause you to lose control. If you are unable to continue up the hill, dismount the ATV on the up- hill side.
7-21 1 2 3 4 5 6 7 8 9 10 11 RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as pos- sible. Move back on the seat and sit with your arms straight. Improper braking may cause a loss of traction.
7-22 1 2 3 4 5 6 7 8 9 10 11 CROSSING A SLOPE Traversing a sloping surface on your ATV requires you to properly position your weight to maintain proper balance. Be sure that you have learned the basic riding skills on flat ground before attempting to cross a sloping surface.
7-23 1 2 3 4 5 6 7 8 9 10 11 CROSSING THROUGH SHALLOW WATER The ATV can be used to cross slow moving, shal- low water of up to a maximum of 20 cm (8 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.
7-24 1 2 3 4 5 6 7 8 9 10 11 Test your brakes after leaving the water. Do not continue to ride your ATV without verifying that you have regained proper braking ability. CAUTION: ECB00800 After riding your ATV in water, be sure to drain the trapped water by removing the check hose at the bottom of the air filter case and the V-belt case drain plug.
7-25 1 2 3 4 5 6 7 8 9 10 11 RIDING OVER ROUGH TERRAIN Riding over rough terrain should be done with cau- tion. Look out for obstacles which could cause damage to the ATV or could lead to an upset or ac- cident. Be sure to keep your feet firmly mounted on the footboards at all times.
7-26 1 2 3 4 5 6 7 8 9 10 11 pected and uncorrected, sliding could lead to an accident. To reduce the tendency for the front wheels to slide in loose or slippery conditions, positioning your weight over the front wheels will sometimes help.
7-27 1 2 3 4 5 6 7 8 9 10 11 WHAT TO DO IF... This section is designed to be a reference guide only. Be sure to read each section on riding tech- niques completely. 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.
7-28 1 2 3 4 5 6 7 8 9 10 11 Ride slowly and carefully through slow moving water, watching for obstacles. Be sure to let wa- ter drain from the ATV and CHECK YOUR BRAKES FOR PROPER OPERATION when you come out of the water. Do not continue to ride your ATV until you have regained adequate braking ability.
8-1 1 2 3 4 5 6 7 8 9 10 11 EBU21640 PERIODIC MAINTENANCE AND MINOR REPAIR EBU21660 Safety is an obligation of the owner. Periodic in- spection, adjustment and lubrication will keep your ATV in the safest and best operating condition possible. The most important points of inspection, adjustment, and lubrication are explained on the following pages.
8-2 1 2 3 4 5 6 7 8 9 10 11 The service information included in this manual and the tools provided in the owner ’ s tool kit are in- tended to assist you in the performance of preven- tive maintenance and minor repairs. However, additional tools such as a torque wrench may be necessary to perform certain maintenance work correctly.
8-3 1 2 3 4 5 6 7 8 9 10 11 EBU21741 Periodic maintenance chart for the emission control system NO TE: ● For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals. ● For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance inter- vals.
8-4 1 2 3 4 5 6 7 8 9 10 11 6 * Exhaust system ● Check f or leakage and replace gasket(s) if neces- sary . ● Check f or looseness and tighten all screw clamps and joints if necessary .
8-5 1 2 3 4 5 6 7 8 9 10 11 EBU21862 General maintenance and lubrication chart NO . ITEM CHECK OR MAINTENANCE JOB INITIAL EVER Y Whichev- er comes fi rst month 1 3 6 6 12 km (mi) 320 (200) 1300 (800) 2500 (1600) 2500 (1600) 5000 (3200) hours 20 80 160 160 320 1 Engine and V -belt case air fi lter ele- ment ● Clean and replace if necessary .
8-6 1 2 3 4 5 6 7 8 9 10 11 8 * V -belt ● Check f or wear , cracks or other damage, and replace if necessary . √√ 9 * Chassis fasteners ● Make sure that all nuts , bolts, and scre ws are properly tightened. √√√√√ 10 * Shock absorber assemblies ● Check operation and correct if necessary .
8-7 1 2 3 4 5 6 7 8 9 10 11 EBU23060 NO TE: The air filter needs more frequent service if you are riding in unusually wet or dusty areas. 20 * Battery ● Check electrolyte le v el and speci fi c gra vity , and correct if necessary . ● Make sure that the breather hose is properly routed.
8-8 1 2 3 4 5 6 7 8 9 10 11 W ARNING EWB00010 Indicates a potential hazard that could result in serious injury or death. EBU23210 Checking the spark plug The spark plug is an important engine component, which is easy to check.
8-9 1 2 3 4 5 6 7 8 9 10 11 To check the spark plug 1. Check that the porcelain insulator around the center electrode of the spark plug is a medi- um-to-light tan (the ideal color when the ATV is ridden normally). NO TE: If the spark plug shows a distinctly different color, the engine could be defective.
8-10 1 2 3 4 5 6 7 8 9 10 11 and its mating surface, and then wipe off any grime from the spark plug threads. 3. Install the spark plug with the spark plug wrench, and then tighten it to the specified torque.
8-11 1 2 3 4 5 6 7 8 9 10 11 NO TE: The engine oil should be between the minimum and maximum level marks. 6. If the engine oil is at or below the minimum level mark, add sufficient oil of the recom- mended type to raise it to the correct level. 7. Insert the dipstick into the oil filler hole, and then tighten the engine oil filler cap.
8-12 1 2 3 4 5 6 7 8 9 10 11 fall out. Take care not to lose these parts. 5. Clean the oil strainer with solvent. 6. Check the O-ring for damage and replace it if necessary. 7. Install the O-ring, oil strainer, compression spring and drain bolt. Tighten the engine oil drain bolt to the specified torque.
8-13 1 2 3 4 5 6 7 8 9 10 11 periodic maintenance and lubrication chart. To check the transmission oil level 1. Place the ATV on a level surface. 2. Start the engine, warm it up for several min- utes, and then turn it off. 3. Wait a few minutes until the oil settles, and then remove the screw located at the right side of the crankcase.
8-14 1 2 3 4 5 6 7 8 9 10 11 To change the transmission oil 1. Place the ATV on a level surface. 2. Start the engine, warm it up for several min- utes, and then turn it off. 3. Place an oil pan under the transmission to col- lect the used oil. 4. Remove the oil filler bolt and the drain bolt to drain the oil from the transmission case.
8-15 1 2 3 4 5 6 7 8 9 10 11 CAUTION: ECB00790 ● Make sure that no foreign material enters the transmission case. ● Make sure that no oil gets on the tires or wheels. 7. Start the engine, and then let it idle for several minutes while checking the transmission for oil leakage.
8-16 1 2 3 4 5 6 7 8 9 10 11 1. Remove the seat. (See page 4-11.) 2. Remove the breather hose, and then loosen the clamp screw. 3. Remove the air filter case cover by removing the screws.
8-17 1 2 3 4 5 6 7 8 9 10 11 6. Wash the sponge material gently but thor- oughly in solvent. EWB01900 7. Squeeze the excess solvent out of the sponge material and let it dry. CAUTION: ECB00440 Do not twist the sponge material when squeez- ing it. 8. Check the sponge material and replace it if damaged.
8-18 1 2 3 4 5 6 7 8 9 10 11 12. Install the air filter element into the air filter case. 13. Install the air filter case cover by installing the screws. 14. Install the breather hose and then tighten the clamp screw. 15. Install the seat. NO TE: The air filter element should be cleaned every 20 – 40 hours.
8-19 1 2 3 4 5 6 7 8 9 10 11 2. Remove the panel shown by removing the quick fasteners. 3. Disconnect the coupler shown. 1. Bolt 2. F ront carr ier 2 1 1 1 1.
8-20 1 2 3 4 5 6 7 8 9 10 11 4. Remove the air filter case cover by removing the screw. 5. Remove the air filter element. 1. P anel 2. Coupler 1 2 1. Air fi lter case cover 2.
8-21 1 2 3 4 5 6 7 8 9 10 11 6. Tap the air filter element lightly to remove most of the dust and dirt. Blow out the remain- ing dirt with compressed air as shown. 7. Check the air filter element and replace it if damaged. 8. Install the air filter element into the air filter case.
8-22 1 2 3 4 5 6 7 8 9 10 11 fore cleaning the spark arrester. 1. Remove the screws. 2. Remove the tailpipe by pulling it out of the muffler. 3. Tap the tailpipe lightly, and then use a wire brush to remove any carbon deposits from the spark arrester portion of the tailpipe and inside of the tailpipe housing.
8-23 1 2 3 4 5 6 7 8 9 10 11 EBU23930 V-belt case drain plug After riding in water deep enough to allow it to en- ter the V-belt case, remove this plug to drain the water from the case. NO TE: If water drains from the V-belt case after removing the plug, have a Yamaha dealer check the ATV as the water may affect other engine parts.
8-24 1 2 3 4 5 6 7 8 9 10 11 CAUTION: ECB00480 The carburetor has been set and extensively tested at the Yamaha factory. Changing these settings without sufficient technical knowl- edge may result in poor performance of or damage to the engine.
8-25 1 2 3 4 5 6 7 8 9 10 11 EBU24043 Adjusting the throttle cable free play The throttle cable free play should be checked and, if necessary, adjusted at the intervals speci- fied in the periodic maintenance and lubrication chart. The throttle cable free play should measure 1.
8-26 1 2 3 4 5 6 7 8 9 10 11 EBU24090 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 maintenance and lubrication chart. Each brake is provided with a wear indicator, which allows you to check the brake shoe wear without having to dis- assemble the brake.
8-27 1 2 3 4 5 6 7 8 9 10 11 Rear brake EBU24360 Adjusting the front brake lever free play The brake lever free play must be checked and, if necessary, adjusted at the intervals specified in the periodic maintenance and lubrication chart. NO TE: Before adjusting the brake lever free play, check the front brake shoes for wear.
8-28 1 2 3 4 5 6 7 8 9 10 11 2. Remove the panel shown by removing the quick fasteners, then disconnect the coupler shown. 1. F ront carr ier 2. Bolt 1 2 2 2 1.
8-29 1 2 3 4 5 6 7 8 9 10 11 3. Remove the V-belt air filter element cover by removing the screw. 4. Loosen the locknut and fully turn in the adjust- ing bolt at the brake lever.
8-30 1 2 3 4 5 6 7 8 9 10 11 5. Make sure the brake cable joint in the equaliz- er is straight when the brake is applied. If the cable joint isn ’ t straight, loosen the locknuts, and then turn the adjusting nuts on the front brake cables until the cable joint becomes straight.
8-31 1 2 3 4 5 6 7 8 9 10 11 6. Tighten the locknut on each brake cable. 7. Turn the adjusting bolt in direction (a) to in- crease the free play, and in direction (b) to de- crease it. 8. Tighten the locknut at the brake lever. 9. Install the V-belt air filter element cover by in- stalling the screw.
8-32 1 2 3 4 5 6 7 8 9 10 11 EWB02020 EBU24481 Adjusting the rear brake lever free play The brake lever free play must be checked and, if necessary, adjusted at the intervals specified in the periodic maintenance and lubrication chart. NO TE: Before adjusting the brake lever free play, check the rear brake shoes for wear.
8-33 1 2 3 4 5 6 7 8 9 10 11 EWB02020 EBU24871 Drive chain slack The drive chain slack should be checked before each ride and adjusted if necessary. To check the drive chain slack 1.
8-34 1 2 3 4 5 6 7 8 9 10 11 3. If the drive chain slack is incorrect, adjust it as follows. To adjust the drive chain slack 1. Loosen the hub stopper bolt locknut and then the hub stopper bolt. 2. Loosen the axle holding bolts. 3. Loosen the chain adjusting bolt locknut.
8-35 1 2 3 4 5 6 7 8 9 10 11 CAUTION: ECB00541 Improper drive chain slack will overload the en- gine as well as other vital parts of the ATV and can lead to drive chain slippage or breakage. To prevent this from occurring, keep the drive chain slack within the specified limits.
8-36 1 2 3 4 5 6 7 8 9 10 11 5. Tighten the hub stopper bolt, and then its lock- nut. EBU24880 Lubricating the drive chain The drive chain must be cleaned and lubricated at the intervals specified in the periodic maintenance and lubrication chart, otherwise it will quickly wear out, especially when riding in dusty or wet areas.
8-37 1 2 3 4 5 6 7 8 9 10 11 3. Thoroughly lubricate the drive chain with a special O-ring chain lubricant. CAUTION: ECB00580 Do not use engine oil or any other lubricants for the drive chain, as they may contain sub- stances that could damage the O-rings.
8-38 1 2 3 4 5 6 7 8 9 10 11 Front brake lever Rear brake lever EBU24961 Checking the wheel bearings The front and rear wheel bearings must be checked at the intervals specified in the periodic maintenance and lubrication chart. If there is play in a wheel hub or if a wheel does not turn smoothly, have a Yamaha dealer check the wheel bearings.
8-39 1 2 3 4 5 6 7 8 9 10 11 Left side Right side EBU25070 Lubricating the knuckle shafts The knuckle shafts must be lubricated at the inter- vals specified in the periodic maintenance and lu- brication chart. Lubricate the knuckle shafts using a grease gun.
8-40 1 2 3 4 5 6 7 8 9 10 11 EBU25090 Lubricating the steering shaft The steering shaft must be lubricated at the inter- vals specified in the periodic maintenance and lu- brication chart. Lubricate the steering shaft using a grease gun. EBU25111 Battery A poorly maintained battery will corrode and dis- charge quickly.
8-41 1 2 3 4 5 6 7 8 9 10 11 NO TE: The electrolyte should be between the minimum and maximum level marks. 3. If the electrolyte is at or below the minimum level mark, add distilled water to raise it to the maximum level mark. CAUTION: ECB00590 Use only distilled water, as tap water contains minerals that are harmful to the battery.
8-42 1 2 3 4 5 6 7 8 9 10 11 EWB02140 4. Check and, if necessary, tighten the battery lead connections and correct the breather hose routing. To store the battery If the ATV will not be used for more than one month, the battery will need to be removed and stored as follows.
8-43 1 2 3 4 5 6 7 8 9 10 11 CAUTION: ECB00600 Do not leave or store the battery on its side. 3. If the battery will be stored for more than two months, check the specific gravity of the elec- trolyte at least once a month and fully charge the battery whenever necessary.
8-44 1 2 3 4 5 6 7 8 9 10 11 EBU25252 Replacing the fuse The fuse holder is located on the right side of the ATV. If the fuse is blown, replace it as follows. 1. Turn the key to “ OFF ” and turn off all electrical circuits. CAUTION: ECB00640 To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse.
8-45 1 2 3 4 5 6 7 8 9 10 11 1. Remove the cover at the rear of the headlight by pulling it off. 2. Remove the bulb holder cover by pulling it off. 3. Remove the bulb holder by pushing it inward and turning it counterclockwise. 4. Remove the defective headlight bulb by pull- ing it out of the socket.
8-46 1 2 3 4 5 6 7 8 9 10 11 EWB02190 5. Place a new bulb into position. 6. Install the bulb holder by pushing it inward and turning it clockwise. 7. Install the bulb holder cover. 8. Install the cover at the rear of the headlight. 9. Adjust the headlight beam if necessary.
8-47 1 2 3 4 5 6 7 8 9 10 11 EBU25610 Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as follows. 1. Remove the bulb holder (together with the bulb) by turning it counterclockwise. 2. Remove the defective bulb by pushing it in and turning it counterclockwise.
8-48 1 2 3 4 5 6 7 8 9 10 11 3. Insert a new bulb into the bulb holder, push it in, and then turn it clockwise until it stops. 4. Install the bulb holder (together with the bulb) by turning it clockwise. EBU25650 Removing a wheel 1. Loosen the wheel nuts.
8-49 1 2 3 4 5 6 7 8 9 10 11 2. Lower the ATV to the ground. 3. Tighten the wheel nuts to the specified torques. EBU25710 Troubleshooting Although Yamaha ATVs receive a thorough in- spection before shipment from the factory, trouble may occur during operation.
8-50 1 2 3 4 5 6 7 8 9 10 11 EWB02260 W ARNING POTENTIAL HAZARD Checking the fuel system while smoking or near an open flame. WHAT CAN HAPPEN Fuel can ignite or explode, causing severe in- jury or property damage. HOW TO AVOID THE HAZARD Do not smoke when checking the fuel sys- tem.
8-51 1 2 3 4 5 6 7 8 9 10 11 EBU25791 Troubleshooting chart Check the fuel level in the fuel tank. 1. Fuel There is enough fuel. There is no fuel. Check the compression. Supply fuel. The engine does not start. Check the compression. Operate the electric starter.
9-1 1 2 3 4 5 6 7 8 9 10 11 EBU25860 CLEANING AND STORAGE EBU25890 Cleaning Frequent, thorough cleaning of your ATV will not only enhance its appearance but will improve its general performance and extend the useful life of many components. 1. Before cleaning the ATV: a.
9-2 1 2 3 4 5 6 7 8 9 10 11 EWB02300 EBU25932 Storage Short-term Always store your ATV in a cool, dry place and, if necessary, protect it against dust with a porous cover. CAUTION: ECB00720 ● Storing the ATV in a poorly ventilated room or covering it with a tarp while it is still wet, will allow water and humidity to seep in and cause rust.
9-3 1 2 3 4 5 6 7 8 9 10 11 c. Install the spark plug cap onto the spark plug, and then place the spark plug on the cylinder head so that the electrodes are grounded. (This will limit sparking during the next step.) d. Turn the engine over several times with the starter.
10-1 1 2 3 4 5 6 7 8 9 10 11 EBU25960 SPECIFICATIONS EBU25974 Dimensions: Overall length: 1700 mm (66.9 in) Overall width: 990 mm (39.0 in) Overall height: 980 mm (38.6 in) Seat height: 685 mm (27.0 in) Wheelbase: 1080 mm (42.5 in) Ground clearance: 145 mm (5.
10-2 1 2 3 4 5 6 7 8 9 10 11 Engine oil quantity: Periodic oil change: 1.25 L (1.32 US qt) (1.10 Imp.qt) Transmission oil: Quantity: 0.6 L (0.63 US qt) (0.53 Imp.qt) Air filter: Air filter element: Wet element Fuel: Recommended fuel: Unleaded gasoline only Fuel tank capacity: 7.
10-3 1 2 3 4 5 6 7 8 9 10 11 Rear tire: Type: Tubeless Size: AT22 x 10-8 Manufacturer/model: DUNLOP/KT537A Loading: Maximum load: 105.0 kg (231 lb) (Total weight of rider, cargo, accessories, and tongue) Tire air pressure (measured on cold tires): Recommended: Front: 20 kPa (2.
10-4 1 2 3 4 5 6 7 8 9 10 11 Electrical system: Ignition system: DC. CDI Charging system: AC magneto Battery: Model: 12N12C-4A-2 Voltage, capacity: 12 V, 12.0 Ah Headlight: Bulb type: Krypton bulb Bulb voltage, wattage x quantity: Headlight: 12 V, 30 W/30.
11-1 1 2 3 4 5 6 7 8 9 10 11 EBU25981 CONSUMER INFORMATION EBU26011 Identification numbers Record the key identification number, vehicle iden- tification number and model label information in the spaces provided below for assistance when or- dering spare parts from a Yamaha dealer or for ref- erence in case the ATV is stolen.
11-2 1 2 3 4 5 6 7 8 9 10 11 NO TE: The vehicle identification number is used to identi- fy your ATV. EBU26050 Model label The model label is affixed at the location in the il- lustration. Record the information on this label in the space provided. This information will be need- ed when ordering spare parts from a Yamaha deal- er.
11-3 1 2 3 4 5 6 7 8 9 10 11 EBU26060 Noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering ino.
11-4 1 2 3 4 5 6 7 8 9 10 11 EBU26080 Maintenance record Copies of work orders and/or receipts for parts you purchase and install will be required to document main- tenance done in accordance with the warranty. The chart below is printed only as a reminder to you that the maintenance work is required.
11-5 1 2 3 4 5 6 7 8 9 10 11 EBU26501 YAMAHA MOTOR CORPORATION, U.S.A. ATV LIMITED WARRANTY Y amaha Motor Cor poration, U .S.A. hereby w arrants that new Y amaha A TVs purchased from an authorized Y a.
11-6 1 2 3 4 5 6 7 8 9 10 11 W ARRANTY QUESTIONS AND ANSWERS Q. What costs are my responsibility during the warranty period? A. The customer ’ s responsibility includes all costs of normal maintenance services, non-warranty repairs, accident and collision damages , and oil, oil filters, air filters, spark plugs, and brake shoes .
11-7 1 2 3 4 5 6 7 8 9 10 11 EBU26122 YAMAHA EXTENDED SERVICE (Y.E.S.) K eep your Y amaha protected ev en after your warr anty expires with gen uine Y amaha Extended Ser vice (Y .E.S.). Y .E.S. is designed and administered by Y amaha Motor Corporation to provide maximum owner satisf action.
11-8 1 2 3 4 5 6 7 8 9 10 11 We urge y ou to act now . Y ou ’ ll get the excellent benefits of TRIP cov erage right awa y , and you ’ ll rest easy knowing you ’ ll ha ve strong f actory-backed protection e ven after y our Y amaha Limited W arranty expires.
11-9 1 2 3 4 5 6 7 8 9 10 11 EBU26132.
INDEX A Accessories and loading ................................................ 6-6 Air filter elements, engine and V-belt filter cleaning ..... 8-15 B Battery .................................................................. 5-7 , 8-40 Brake lever free play, adjusting the front.
M Main switch ..................................................................... 4-1 Maintenance and lubrication chart .................................. 8-5 Maintenance chart, emission control system .................. 8-3 Maintenance record .....
PRINTED IN JAP AN 2006.03-0.6x1 ! (E) Y AMAHA MOT OR CO. , L TD. PRINTED ON RECYCLED PAPER LOCATE AND READ OWNER ’ S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS. (For replacement manual, call 1-800-532-1558) WARNING ALWAYS : use proper riding techniques to avoid vehicle overturns on hills and rough terrain and in turns.
Dear New Y amaha A TV Owner: CONGRA TULA TIONS ON THE PURCHASE OF YOUR NEW Y AMAHA A TV . Y ou have purchased a quality Y amaha pr oduct that , with proper use and care , will pro vide hours of riding pleasure.
NO POST AGE NECESSARY IF MAILED IN THE UNITED ST A TES FIRST CLASS PERMIT NO . 4 CYPRESS, CA POST AGE WILL BE P AID BY ADDRESSEE Y AMAHA MOTOR CORPORA TION U.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Yamaha YFM125GW è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Yamaha YFM125GW - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Yamaha YFM125GW imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Yamaha YFM125GW ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Yamaha YFM125GW, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Yamaha YFM125GW.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Yamaha YFM125GW. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Yamaha YFM125GW insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
