Yamaha GRIZZLY 125 Owner's Manual
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Yamaha GRIZZLY 125 Owner's Manual

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READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER'S MANUAL
YFM125GV
w
This ATV should not be ridden by anyone under 16 years of age.
LIT-11626-19-05
1C5-28199-12

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  • Page 1 READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER’S MANUAL YFM125GV This ATV should not be ridden by anyone under 16 years of age. LIT-11626-19-05 1C5-28199-12...
  • Page 3 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. This manual includes important safety information.
  • Page 4 EBU00801 IMPORTANT MANUAL INFORMATION FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERI- OUS INJURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander or a person inspecting or repairing the...
  • Page 5 Please check your local riding laws and regulations before operating this ATV. YFM125GV EBU13330 OWNER'S MANUAL © 2005 by Yamaha Motor Corporation, U.S.A. 1st edition, March 2005 AFFIX DEALER All rights reserved. LABEL HERE...

  • Page 6: Table Of Contents

    EBU00014 Indicates a potential hazard that could result in serious injury or death. CONTENTS LOCATION OF THE WARNING AND CONTROL FUNCTIONS ......4-1 SPECIFICATION LABELS .......1-1 Main switch ...........4-1 Indicator lights ........4-2 Handlebar switches ......4-2 Throttle lever ........4-4 SAFETY INFORMATION ......2-1 Speed limiter ........4-5 Front brake lever ........4-6 Rear brake lever ........4-6...
  • Page 7 PRE-OPERATION CHECKS ....5-1 Parking ..........6-7 Front and rear brakes ......5-2 Parking on a slope........6-8 Fuel ............5-3 Accessories and loading ......6-9 Engine and transmission oil ....5-5 Chain ............5-6 Throttle lever ........5-6 Riding Your ATV........7-1 Tires .............5-6 Getting to know your ATV .....7-3 How to measure tire pressure ....5-7 Ride with care and good Tire wear limit ........5-8...
  • Page 8 PERIODIC MAINTENANCE AND Drive chain slack adjustment....8-27 ADJUSTMENT .........8-1 Lubricating the drive chain ....8-29 Owner’s manual and tool kit ....8-1 Draining the V-belt compartment..8-30 Periodic maintenance/Lubrication ..8-3 Cable inspection and lubrication ..8-30 Engine oil..........8-5 Brake lever lubrication ......8-31 Final transmission oil ......8-7 Knuckle shaft, lower arms and Spark plug inspection ......8-9 steering shaft lubrication ....8-31...
  • Page 9 SPECIFICATIONS .........10-1 NOISE REGULATION......11-1 MAINTENANCE RECORD ....12-1 ATV LIMITED WARRANTY ....13-1 YAMAHA EXTENDED SERVICE (Y.E.S.)...........14-1...

  • Page 10: Location Of The Warning And Specification Labels

    EBU00464 LOCATION OF THE WARNING AND SPECIFICATION LABELS...
  • Page 11 ATV. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer. 1C5-21696-00 WARNING NEVER ride as a passenger.
  • Page 12 DRIVE SELECT LEVER 8 Read owner’s manual carefully before operating. 8 When shifting the drive select lever, always be sure to stop the ATV and apply the rear brake. 5YT-2151E-30 5kg 11lbs 3LD-24877-A0 10kg 22lbs 1C5-24877-A0 NEVER sit here. 3MX-24875-A0 5FE-21568-01...

  • Page 13: Safety Information

    EBU13360 SAFETY INFORMATION AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE. An ATV handles differently from other vehicles including motorcycles and cars. A collision or rollover can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper precautions.
  • Page 14 8 Always avoid operating an ATV on any paved surfaces, including sidewalks, driveways, parking lots and streets. 8 Never operate an ATV on any public street, road or highway, even a dirt or gravel one. 8 Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You should also wear eye protection (goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and long pants.
  • Page 15 8 Never operate on excessively rough, slippery or loose terrain until you have learned and practiced the skills necessary to control the ATV on such terrain. Always be especially cautious on these kinds of terrain. 8 Always follow proper procedures for turning as described in this manual. Practice turning at low speeds before attempting to turn at faster speeds.
  • Page 16 8 Always use proper procedures if you stall or roll backwards when climbing a hill. To avoid stalling, maintain a steady speed when climbing a hill. If you stall or roll backwards, follow the special proce- dure for braking described in this manual. Dismount on the uphill side or to a side if pointed straight uphill.
  • Page 17 8 Never exceed the stated load capacity for an ATV. Cargo should be properly distributed and securely attached. Reduce speed and follow instructions in this manual for carrying cargo. Allow greater distance for braking. FOR MORE INFORMATION ABOUT ATV SAFETY, call the Consumer Products Safety Commission at 1-800-638-2772, or the ATV Distributor’s Safety Hotline at 1-800-852-5344.
  • Page 18 q WARNING Otherwise, fuel may leak out of the carbu- retor or fuel tank. POTENTIAL HAZARD WHAT CAN HAPPEN Improper handling of gasoline. Gasoline is poisonous and can cause WHAT CAN HAPPEN injuries. Gasoline can catch fire and you could be HOW TO AVOID THE HAZARD burned.
  • Page 19 q WARNING POTENTIAL HAZARD Starting or running the engine in a closed area. WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with adequate ventilation.

  • Page 20: Description And Machine Identification

    EBU00032 DESCRIPTION AND MACHINE IDENTIFICATION 8 9 0 1. Seat 11. Footboard 2. Drive select lever 12. Rear brake lever 3. Front cover 13. Parking brake 4. Headlight 14. Reverse indicator light 5. Front carrier 15. Neutral indicator light 6. Starter (choke) 16.

  • Page 21: Identification Number Records

    This tion in the spaces provided for assistance when number can be used for ordering a new key. ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. 1. KEY IDENTIFICATION NUMBER: 2.

  • Page 22: Vehicle Identification Number

    The model label is affixed to the location in the into the frame. illustration. Record the information on this label in the space provided. This information will be needed to order spare parts from your Yamaha dealer. 1. Vehicle identification number NOTE: The vehicle identification number is used to 1.

  • Page 23: Control Functions

    EBU00039 CONTROL FUNCTIONS Indicates a potential hazard that could result in serious injury or death. EBU09420 Main switch Functions of the respective switch positions are as follows: The engine can be started only at this position and the headlights and taillight come on when the light switch is on.

  • Page 24: Indicator Lights

    EBU00043 EBU00053 Indicator lights Handlebar switches 1. Reverse indicator light “R” 1. Engine stop switch “ENG. STOP” 2. Neutral indicator light “N” 2. Light switch “LIGHTS” 3. Start switch “START” EBU12500 EBU11580 Reverse indicator light “R” Engine stop switch “ENG. STOP” This indicator light comes on when the drive Make sure that the engine stop switch is in the select lever is in the “R”...
  • Page 25 EBU00056 EBU14770 Start switch “START” Light switch “LIGHTS” The starter motor cranks the engine when this Set the switch to the “LO” position to turn on the switch is pushed. low beam and the taillight. Set the switch to the “HI” position to turn on the high beam and the taillight.

  • Page 26: Throttle Lever

    Check the operation of the throttle lever before you start the engine. If it does not work smoothly, check for the cause. 1. Throttle lever Correct the problem before riding the ATV. Consult a Yamaha dealer if you can't find or solve the problem yourself.

  • Page 27: Speed Limiter

    EBU11590 q WARNING Speed limiter The speed limiter keeps the throttle from fully POTENTIAL HAZARD opening, even when the throttle lever is pushed Improper adjustment of the speed limiter to the maximum. Turning in the adjusting screw and throttle. limits the maximum engine power available and WHAT CAN HAPPEN decreases the maximum speed of the ATV.

  • Page 28: Front Brake Lever

    EBU00070 EBU00072 Front brake lever Rear brake lever The front brake lever is located on the right han- The rear brake lever is located on the left han- dlebar. Pull it toward the handlebar to apply the dlebar. Pull it toward the handlebar to apply the front brake.

  • Page 29: Parking Brake

    EBU00074 q WARNING Parking brake Use the parking brake when you have to start POTENTIAL HAZARD the engine or park the machine, especially on a Improper use of the parking brake. slope. Apply the rear brake lever and push down WHAT CAN HAPPEN the lock plate to apply the parking brake.

  • Page 30: Drive Select Lever

    EBU11060 EBU00092 Drive select lever Fuel tank cap The drive select lever is used to shift your Remove the fuel tank cap by turning it counter- machine into the forward, neutral and reverse clockwise. positions. (Refer to page 6-4 for the drive select lever operation.) 1.

  • Page 31: Fuel Cock

    EBU00093 Fuel cock The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position fuel will not flow. Always turn the lever to this position when the engine is not running. With the lever in this position, fuel flows to the carburetor.

  • Page 32: Starter (Choke)

    EBU00094 EBU00567 Starter (choke) Seat Starting a cold engine requires a richer air-fuel To remove the seat, pull the seat lock lever mixture. A separate starter circuit supplies this upward and pull up the seat at the rear. mixture. Move in direction a to turn on the starter (choke).

  • Page 33: Front Carrier

    EBU05820 To install the seat, insert the projections on the Front carrier front of the seat into the seat holders and push down on the seat at the rear. Maximum load limit: 5 kg (11 lb) EBU05830 Rear carrier Maximum load limit: 10 kg (22 lb) NOTE: Make sure that the seat is securely fitted.

  • Page 34: Pre-Operation Checks

    PRE-OPERATION CHECKS Before using this machine, check the following points: ITEM ROUTINE PAGE • Check operation, condition and free play. Brakes 5-2–5-3, 8-20–8-26 • Adjust if necessary. • Check fuel level. Fuel 5-3–5-4 • Fill with fuel if necessary. Engine oil and •...

  • Page 35: Front And Rear Brakes

    Increases the possibility of an accident or feeling when the brake is applied. If not, equipment damage. have the machine inspected by a Yamaha HOW TO AVOID THE HAZARD dealer. Always inspect your ATV each time you...

  • Page 36: Fuel

    If a problem cannot be corrected by the adjustment 1. Filler tube 2. Fuel level procedures provided in this manual, have the ATV inspected by a Yamaha dealer. Recommended fuel: UNLEADED GASOLINE ONLY Fuel tank capacity: Total: 7.6 L (1.67 Imp gal, 2.01 US gal)
  • Page 37 WHAT CAN HAPPEN Fuel can spill, which can cause a fire and Your Yamaha engine has been designed to use severe injury. regular unleaded gasoline with a pump octane Fuel expands when it heats up. If the fuel...

  • Page 38: Engine And Transmission Oil

    EBU11163 Engine and final transmission oil Recommended engine oil type and quantity: Make sure the engine and final transmission oil See page 10-2. is at the specified level. Add oil as necessary. (See page 8-5.) Recommended final transmission oil type and quantity: 8 Do not use oils with a diesel specification See page 10-2.

  • Page 39: Throttle Lever

    Check to see that the throttle lever operates cor- q WARNING rectly. It must open smoothly and spring back to the idle position when released. Have a Yamaha POTENTIAL HAZARD dealer repair as necessary for proper operation. Operating this ATV with improper tires, or with improper or uneven tire pressure.

  • Page 40: How To Measure Tire Pressure

    2. The tires should be set to the recom- 4. Use no more than the following pres- mended pressure: sures when seating the tire beads. 8 Recommended tire pressure Front 250 kPa (2.5 kgf/cm , 36 psi) Front 20 kPa (0.20 kgf/cm , 2.9 psi) Rear 250 kPa (2.5 kgf/cm , 36 psi)

  • Page 41: Specifications

    EBU00160 Set pressure with tires cold. Tire wear limit Set tire pressures to the following specifications: When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. Recommended Minimum Maximum pressure 20 kPa 17 kPa 23 kPa Front (0.20 kgf/cm...

  • Page 42: Fittings And Fasteners

    Always check the tightness of chassis fittings and Check the operation of all switches. Have a fasteners before a ride. Take the machine to a Yamaha dealer repair as necessary for proper Yamaha dealer or refer to the Service Manual for operation. correct tightening torque. EBU00499 Battery Check fluid level and fill if necessary.

  • Page 43: Operation

    2. Turn the fuel cock to “ON”. there is a control or function you do not 3. Turn the main switch to “ON” and the engine understand, ask your Yamaha dealer. stop switch to “RUN”. 4. Shift the drive select lever to neutral.
  • Page 44 8 When the drive select lever is in neutral, the neutral indicator light should come on. If the light does not come on, ask a Yamaha dealer to inspect it. 5. Use the starter (choke) in reference to the...

  • Page 45: Starting A Warm Engine

    NOTE: If the engine fails to start, release the start See the “Engine break-in” section prior to switch, then push the start switch again. Pause operating engine for the first time. a few seconds before the next attempt. Each cranking should be as short as possible to pre- EBU00180 serve battery energy.

  • Page 46: Drive Select Lever Operation And Reverse Driving

    EBU15190 Drive select lever operation and reverse dri- ving Before shifting, you must stop the machine and return the throttle lever to its closed position. Otherwise, the transmission may be damaged. a. Drive select lever 1. Neutral Shifting: forward 2. Forward 3.
  • Page 47 POTENTIAL HAZARD should be on. If the light does not come on, ask Improper operation in reverse. a Yamaha dealer to inspect the ATV. WHAT CAN HAPPEN 4. Check behind for people or obstacles, then You could hit an obstacle or person release the rear brake.

  • Page 48: Engine Break-In

    For this reason, we ask that you carefully read If any abnormality is noticed during this period, the following material. Because the engine is consult a Yamaha dealer. brand new, you must not put an excessive load on it for the first several hours of running. During 0–10 hours:...

  • Page 49: Parking

    EBU15690 10–20 hours: Parking Avoid prolonged operation above 3/4 throttle. When parking, stop the engine and shift into the Rev the machine freely through the gears but do forward position. Turn the fuel cock to “OFF” not use full throttle at any time. and apply the parking brake.

  • Page 50: Parking On A Slope

    EBU00215 Parking on a slope 1. Bring the machine to a stop by applying the brakes. q WARNING 2. Stop the engine. 3. With the rear brake applied, apply the park- POTENTIAL HAZARD ing brake. Parking on a hill or other incline. WHAT CAN HAPPEN The ATV could roll out of control, increas- ing the chance of an accident.

  • Page 51: Accessories And Loading

    Yamaha accessories. Other acces- than it does without accessories. sories may also be available on the market. However, it is not possible for Yamaha to test all non-Yamaha accessories, nor have any control over the quality or suitability of them.
  • Page 52 EBU14781 8 Tie down cargo securely to the carriers. Make Loading As originally equipped, this ATV is not designed sure cargo in the trailer cannot move around. to carry cargo or tow a trailer. If you choose to A shifting load can cause an accident. 8 Make sure the load does not interfere with add accessories so that you can carry cargo or tow a trailer, you must use common sense and...
  • Page 53 q WARNING POTENTIAL HAZARD Overloading this ATV or carrying or tow- ing cargo improperly. WHAT CAN HAPPEN Could cause changes in vehicle handling which could lead to an accident. HOW TO AVOID THE HAZARD Never exceed the stated load capacity for this ATV.
  • Page 54 EBU14870 Indicates a potential hazard that could result in serious injury or death. 6-12...

  • Page 55: Riding Your Atv

    Riding Your...

  • Page 56: Getting To Know Your Atv

    Indicates a potential hazard that could result in serious injury or death. GETTING TO KNOW YOUR ATV this Owner’s Manual completely and understand This ATV is for recreation and utility use. This the operation of the controls. Pay particular section, Riding your ATV, provides general ATV attention to the safety information on pages riding instructions for recreational riding.

  • Page 57: Ride With Care And Good Judgement

    Get training if you are inexperienced. should complete the certified training Beginners should get training from a certified course offered by Yamaha. They should instructor. then regularly practice the skills learned in Become familiar with this ATV at slow speeds the course and the operating techniques first, even if you are an experienced operator.
  • Page 58 Not recommended for children under 16 years of age. q WARNING POTENTIAL HAZARD Failure to follow the age recommendations for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not rec- ommended for their age can lead to severe injury or death of the child.
  • Page 59 This ATV is designed to carry operator and cargo only - passengers prohibited. q WARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an acci- dent, resulting in harm to you and/or your passenger.
  • Page 60 Apparel Operating without protective clothing q WARNING increases your chances of severe injury in the event of an accident. POTENTIAL HAZARD HOW TO AVOID THE HAZARD Operating this ATV without wearing an Always wear an approved motorcycle hel- approved motorcycle helmet, eye protec- met that fits properly.
  • Page 61 Do not operate after consuming alcohol or q WARNING drugs. POTENTIAL HAZARD Operator’s performance capability is reduced by the influence of alcohol or drugs. Operating this ATV after consuming alco- hol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly.
  • Page 62 Pre-operation checks q WARNING Always perform the pre-operation checks listed POTENTIAL HAZARD on page 5-1 before riding for safety and proper care of the ATV. Operating this ATV with improper tires, or with improper or uneven tire pressure. q WARNING WHAT CAN HAPPEN Use of improper tires on this ATV, or oper- POTENTIAL HAZARD...
  • Page 63 Speed limiter For riders inexperienced with this model, this Indicates a potential hazard that could result model is equipped with a speed limiter in the in serious injury or death. throttle lever housing. The speed limiter limits the power and top speed of the ATV. Turning the screw in decreases top speed, and turning it Do not operate at speeds too fast for your out increases top speed.
  • Page 64 Loading and accessories q WARNING Use extra caution when riding the ATV with POTENTIAL HAZARD additional loads, such as accessories or cargo. The ATV’s handling may be adversely affected. Overloading this ATV or carrying or tow- Reduce your speed when adding additional ing cargo improperly.
  • Page 65 During operation q WARNING Always keep your feet on the footboards during POTENTIAL HAZARD operation. Otherwise your feet may contact the rear wheels. Removing hands from handlebars or feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can reduce your ability to control the ATV or could cause you to lose your balance and fall off of the ATV.
  • Page 66 Avoid wheelies and jumping. You may lose con- trol of the ATV or overturn. q WARNING POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, including an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps.
  • Page 67 Never modify this ATV through improper installation or use of accessories. All parts and accessories added to this vehicle should be genuine Yamaha or equivalent components designed for use on this ATV and should be installed and used accord- ing to instructions. If you have questions, consult an authorized ATV dealer.
  • Page 68 Exhaust system HOW TO AVOID THE HAZARD The exhaust system on the ATV is very hot dur- Do not operate, idle, or park the ATV in dry ing and following operation. To prevent burns, grass or other dry ground cover. avoid touching the exhaust system.

  • Page 69: Be Careful Where You Ride

    BE CAREFUL WHERE YOU RIDE This ATV is designed for off-road use only. Riding on paved surfaces can cause loss of con- trol. q WARNING POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect han- dling and control of the ATV, and may cause the vehicle to go out of control.
  • Page 70 Do not ride on any public road, street, or high- way. Riding on public roads can result in collisions with other vehicles. q WARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this ATV on any public street, road or highway, even a dirt or...
  • Page 71 Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden haz- ards which may cause the ATV to upset. q WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain.
  • Page 72 q WARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or vehicle control, which could result in an accident, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, slip- pery or loose terrain until you have learned and practiced the skills necessary...
  • Page 73 When riding in an area where you might not WHAT CAN HAPPEN easily be seen, such as desert terrain, mount a You could be in a collision. You could be caution flag on the ATV. DO NOT use the flag injured.
  • Page 74 Select a large, flat area off-road to become With the engine idling, return the starter knob to familiar with your ATV. Make sure that this area the closed position and shift the drive select is free of obstacles and other riders. You should lever into the forward position.

  • Page 75: Turning Your Atv

    TURNING YOUR ATV HOW TO AVOID THE HAZARD To achieve maximum traction while riding off- Always follow proper procedures for turn- road, the two rear wheels are mounted solidly ing as described in this Owner’s Manual. on one axle and turn together at the same Practice turning at low speeds before speed.
  • Page 76 Once you have learned this technique you should be able to perform it at higher speeds or Lean towards inside of turn. in tighter curves. Support your Improper riding procedures such as abrupt throt- weight on the tle changes, excessive braking, incorrect body outer footboard movements, or too much speed for the sharp- ness of the turn may cause the ATV to tip.

  • Page 77: Climbing Uphill

    CLIMBING UPHILL q WARNING Use proper riding techniques to avoid vehicle POTENTIAL HAZARD overturns on hills. Be sure that you can maneu- ver your ATV well on flat ground before attempt- Operating on excessively steep hills. ing any incline and then practice riding first on WHAT CAN HAPPEN gentle slopes.
  • Page 78 q WARNING An obstacle, a sharp drop, or another vehicle or person could be on the other POTENTIAL HAZARD side of the hill. Climbing hills improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Owner’s...
  • Page 79 If you are climbing a hill and you find that you When crossing the side of a hill: have not properly judged your ability to make it Always follow proper procedures as to the top, you should turn the ATV around while described in the Owner’s Manual.
  • Page 80 If your ATV has stalled or stopped and you q WARNING believe you can continue up the hill, restart care- POTENTIAL HAZARD fully to make sure you do not lift the front wheels Stalling, rolling backwards or improperly which could cause you to lose control. If you are dismounting while climbing a hill.
  • Page 81 When fully stopped, apply the rear brake as well, and then lock the parking brake. Dismount on uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the proce- dure described in the Owner’s Manual. 7-29...

  • Page 82: Riding Downhill

    RIDING DOWNHILL q WARNING When riding your ATV downhill, shift your weight POTENTIAL HAZARD as far to the rear and uphill side of the ATV as possible. Move back on the seat and sit with Going down a hill improperly. your arms straight.
  • Page 83 7-31 7-31...

  • Page 84: Crossing A Slope

    CROSSING A SLOPE q WARNING Traversing a sloping surface on your ATV POTENTIAL HAZARD requires you to properly position your weight to maintain proper balance. Be sure that you have Improperly crossing hills or turning on learned the basic riding skills on flat ground hills.
  • Page 85 Shift your weight to the uphill side of the ATV. 7-33 7-33...

  • Page 86: Crossing Through Shallow Water

    CROSSING THROUGH SHALLOW WATER Remember that wet brakes may have The ATV can be used to cross slow moving, reduced stopping ability. Test your brakes shallow water of up to a maximum of 20 cm (7.9 after leaving water. If necessary, apply inches) in depth.
  • Page 87 Test your brakes after leaving the water. Do not continue to ride your ATV without verifying that After riding your ATV in water, be sure to you have regained proper braking ability. drain the trapped water by removing the check hose at the bottom of the air filter case.

  • Page 88: Riding Over Rough Terrain

    RIDING OVER ROUGH TERRAIN q WARNING Riding over rough terrain should be done with POTENTIAL HAZARD caution. Look out for obstacles which could cause damage to the ATV or could lead to an Improperly operating over obstacles. upset or accident. Be sure to keep your feet WHAT CAN HAPPEN firmly mounted on the footboards at all times.

  • Page 89: Sliding And Skidding

    SLIDING AND SKIDDING If the rear wheels of your ATV start to slide side- Care should be used when riding on loose or ways, control can usually be regained (if there is slippery surfaces since the ATV may slide. If room to do so) by steering in the direction of the unexpected and uncorrected, sliding could lead slide.
  • Page 90 With practice, over a period of time, skill at con- q WARNING trolled sliding can be developed. The terrain POTENTIAL HAZARD should be chosen carefully before attempting Skidding or sliding improperly. such maneuvers, since both stability and control are reduced. Bear in mind that sliding maneu- WHAT CAN HAPPEN vers should always be avoided on extremely You may lose control of this ATV.

  • Page 91: What To Do If

    WHAT TO DO IF ... 8 If your ATV starts to slide sideways: This section is designed to be a reference guide Steer in the direction of the slide if you have only. Be sure to read each section on riding the room.
  • Page 92 8 If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards 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 93: Periodic Maintenance And Adjustment

    EBU00515 Have a Yamaha dealer perform service if PERIODIC MAINTENANCE AND you are not familiar with machine service. ADJUSTMENT Periodic inspection, adjustment and lubrication EBU12210 will keep your machine in the safest and most Owner’s manual and tool kit efficient condition possible. Safety is an obliga- You are recommended to put this owner’s man-...
  • Page 94 HOW TO AVOID THE HAZARD during a service operation requiring one, take Never modify this ATV through improper your machine to a Yamaha dealer to check the installation or use of accessories. All parts torque settings and adjust them as necessary.

  • Page 95: Periodic Maintenance/Lubrication

    EBU02611 PERIODIC MAINTENANCE/LUBRICATION NOTE: 8 For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals. 8 For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed.
  • Page 96 • Check breather hose for correct routing. • Correct if necessary. * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service. Indicates a potential hazard that could result in serious injury or death.

  • Page 97: Engine Oil

    EBU08963 Engine oil The engine oil level should be checked before each ride. In addition, the oil must be changed at the intervals specified in the periodic mainte- nance and lubrication chart. Engine oil level measurement 1. Place the machine on a level surface. 2.
  • Page 98 4. Remove the dipstick and drain bolt to drain 5. Clean the oil strainer with solvent. the oil. 6. Inspect the O-ring and replace it if dam- aged. 7. Install the O-ring, oil strainer, compression spring and drain bolt. Tighten the drain bolt to specification.

  • Page 99: Final Transmission Oil

    The final transmission case must be checked for stick. oil leakage before each ride. If any leakage is Recommended oil: found, have a Yamaha dealer check and repair the machine. In addition, the final transmission See page 10-2. oil must be changed at the intervals specified in Oil quantity: the periodic maintenance and lubrication chart.
  • Page 100 3. Remove the oil filler bolt and drain bolt to drain the oil from the final transmission case. 1. Oil filler bolt 3. Install the screw and oil filler bolt, and then tighten them to their specified torques. 1. Drain bolt Tightening torque: 4.

  • Page 101: Spark Plug Inspection

    Do not attempt to diagnose such problems yourself. 6. Install the oil filler bolt, and then tighten it to Instead, take the ATV to a Yamaha dealer. You the specified torque. should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.
  • Page 102 Before installing the spark plug, measure the electrode gap with a wire thickness gauge and adjust it to specification. Spark plug gap: 0.6–0.7 mm (0.02–0.03 in) 1. Spark plug wrench Tightening torque: Spark plug: 12.5 Nm (1.25 m0kgf, 9.1 ft0lbf) a.

  • Page 103: Engine Air Filter Element And V-Belt Case Air Filter Element Cleaning

    EBU14830 1. Remove the seat. Engine air filter element and V-belt case air 2. Remove the breather hose, and then loosen filter element cleaning the clamp screw. Both air filter elements should be cleaned at the 3. Remove the air filter case cover by remov- specified intervals in the periodic maintenance ing the screws.
  • Page 104 4. Remove the air filter element, and separate q WARNING it from the frame. POTENTIAL HAZARD Using low flash point solvents or gasoline to clean the air filter element. WHAT CAN HAPPEN Low flash point solvents or gasoline can catch fire or explode. HOW TO AVOID THE HAZARD Use parts cleaning solvent to clean the air filter element.
  • Page 105 7. Inspect the air filter element. If damaged, replace it. 8. Apply Yamaha foam air filter oil or other quality foam air filter oil to the air filter ele- ment. NOTE: The air filter element should be wet but not drip- ping.
  • Page 106 V-belt case air filter element NOTE: 1. Remove the front carrier by removing the The air filter element should be cleaned every bolts. 20-40 hours. It should be cleaned and lubricated more often if the machine is operated in extremely dusty areas. Each time air filter ele- ment maintenance is performed, check the air inlet to the air filter case for obstructions.
  • Page 107 1. Front cover 2. Quick fastener (× 2) 1. V-belt air filter element cover 2. Screw 3. Air filter element 5. Tap the air filter element lightly to remove most of the dust and dirt. Blow out the remaining dirt with compressed air. If the air filter element is damaged, replace it.

  • Page 108: Spark Arrester Cleaning

    EBU13600 Spark arrester cleaning 2. Remove the tailpipe by pulling it out of the Be sure the exhaust pipe and muffler are cool muffler. before cleaning the spark arrester. 3. Tap the tailpipe lightly, then use a wire 1. Remove the screws. brush to remove any carbon deposits from the spark arrester portion of the tailpipe.

  • Page 109: Idle Speed Adjustment

    EBU13020 q WARNING Idle speed adjustment NOTE: POTENTIAL HAZARD A diagnostic tachometer must be used for this Improper cleaning of the spark arrester. procedure. Hot exhaust system WHAT CAN HAPPEN 1. Start the engine and warm it up for a few Could injure the eyes.

  • Page 110: Valve Clearance Adjustment

    To prevent this, the valve clearance must increase the engine speed, and in direction be adjusted regularly. This adjustment however, b to decrease the engine speed. should be left to a professional Yamaha service technician. Specified idle speed: 1,650–1,750 r/min 1.

  • Page 111: Throttle Lever Adjustment

    EBU00307 Throttle lever adjustment NOTE: Adjust the engine idling speed before adjusting the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle lever free play is 3–5 mm (0.12–0.20 in). 3. Tighten the locknut. 1.

  • Page 112: Front And Rear Brake Shoe Inspection

    Apply the brake and check the position of the indicator. If the indicator reaches the wear limit line, ask a Yamaha dealer to replace the shoes as a set. Front 1. Wear limit line 2. Wear indicator 1.

  • Page 113: Front Brake Lever Free Play Adjustment

    EBU14822 Front brake lever free play adjustment NOTE: Before adjusting the brake lever free play, inspect the front brake shoes. The front brake lever free play should be adjusted to 5–8 mm (0.2–0.3 in) at the brake lever pivot. If the free play is incorrect, adjust it as follows.
  • Page 114 4. Loosen the locknut and fully turn in the adjusting bolt at the front brake lever. 1. Front cover 2. Coupler 3. Remove the V-belt air filter element cover by removing the screw. 1. Locknut 2. Adjusting bolt 1. V-belt air filter element cover 2.
  • Page 115 5. Make sure the brake cable joint in the equal- izer is straight when the brake is applied. If not, loosen the locknut, and then turn the adjusting nuts at the front brake cables until the cable joint becomes straight. 1.
  • Page 116 5–8 mm (0.2–0.3 in) requires professional knowledge. These procedures should be performed by a 8. Tighten the locknut at the brake lever. Yamaha dealer. 9. Install the air filter element cover by installing the screw. 10. Connect the coupler, and then install the front cover by installing the quick fasteners.

  • Page 117: Rear Brake Adjustment

    EBU00965 Rear brake adjustment Turn the adjusting nut on the brake hub in direc- tion a to decrease play, and in direction b to Brake lever free play should be 5–8 mm (0.2–0.3 in) at the brake lever pivot. increase play. If the free play is incorrect, adjust as follows: 1.

  • Page 118: Drive Chain Slack Check

    30 mm (1.18 in), adjust it to specification. 8 Make sure the brakes do not drag. Replacement of brake components requires professional knowledge. These procedures should be performed by a Yamaha dealer. 8-26 a. Drive chain slack...

  • Page 119: Drive Chain Slack Adjustment

    EBU01146 Drive chain slack adjustment 3. Loosen the locknut. To tighten the drive chain, turn the adjusting bolt in direction a. 1. Loosen the hub stopper bolt locknut and then the hub stopper bolt. To loosen the drive chain, turn the adjusting bolt in direction b, and then push the wheels forward.
  • Page 120 If measurement A A of the drive chain adjust- ing bolt is less than 27 mm (1.06 in), ask a Yamaha dealer to replace the drive chain. Tightening torque: Locknut: 15.5 Nm (1.55 m0kgf, 11.2 ft0lbf) Axle holding bolts (upper): 85 Nm (8.5 m0kgf, 61 ft0lbf)

  • Page 121: Lubricating The Drive Chain

    EBU00805 2. Wipe the drive chain dry. Lubricating the drive chain 3. Thoroughly lubricate the drive chain with a The drive chain must be cleaned and lubricated special O-ring chain lubricant. at the intervals specified in the periodic mainte- nance and lubrication chart, otherwise it will quickly wear out, especially when riding in dusty or wet areas.

  • Page 122: Draining The V-Belt Compartment

    Damaged control cables. the V-belt becomes dry. If slipping is noticed, WHAT CAN HAPPEN ask a Yamaha dealer to inspect. Corrosion can result when the outer cov- ering of control cables becomes damaged. Cables can also become frayed or kinked.

  • Page 123: Brake Lever Lubrication

    EBU00725 EBU00728 Brake lever lubrication Knuckle shaft, lower arms and steering shaft Lubricate the pivoting parts of the brake levers. lubrication Lubricate the pivot points using a grease gun. Recommended lubricant: Recommended lubricant: Lithium-soap-based grease Lithium-soap-based grease (all-purpose grease) 1. Grease nipple (×6) 8-31...

  • Page 124: Wheel Removal

    EBU01112 Wheel removal 2. Lower the ATV to the ground. 1. Loosen the wheel nuts. 3. Tighten the wheel nuts to the specified 2. Elevate the ATV and place a suitable stand torque. under the frame. 3. Remove the nuts from the wheel. 4.

  • Page 125: Battery

    EBU00378 Battery Check the level of the battery fluid and see if the terminals are tight. Add distilled water if the fluid level is low. Do not leave or store the battery on its side. When inspecting the battery, be sure the breather hose is routed correctly.
  • Page 126 q WARNING EYES: Flush with water for 15 minutes and get prompt medical attention. Keep batter- POTENTIAL HAZARD ies away from sparks, flames, cigarettes Failure to handle batteries or battery elec- or other sources of ignition. Ventilate trolyte carefully. when charging or using in a closed space. WHAT CAN HAPPEN You could be poisoned.

  • Page 127: Replenishing The Battery Fluid

    EBU11950 Replenishing the battery fluid A poorly maintained battery will corrode and dis- Normal tap water contains minerals which charge quickly. The battery fluid should be are harmful to a battery. Therefore, refill only checked at least once a month. with distilled water.

  • Page 128: Fuse Replacement

    Then turn on the switches, if the Using an improper fuse. fuse immediately blows again, consult a WHAT CAN HAPPEN Yamaha dealer. An improper fuse can cause damage to the electrical system which could lead to a fire. HOW TO AVOID THE HAZARD Always use a fuse of the specified rating.

  • Page 129: Replacing The Headlight Bulb

    EBU14802 Replacing a headlight bulb If a headlight bulb burns out, replace it as fol- lows. 1. Remove the cover at the rear of the head- light by pulling it off. 1. Bulb holder cover 2. Bulb holder 3. Remove the bulb holder by pushing it inward and turning it counterclockwise.
  • Page 130 q WARNING 5. Install a new headlight bulb into position. POTENTIAL HAZARD A headlight bulb is hot when it is on and immediately after it is turned off. WHAT CAN HAPPEN You can be burned, or a fire could start if the bulb touches something flammable.

  • Page 131: Tail/Brake Light Bulb Replacement

    EBU00861 Tail/brake light bulb replacement 3. Install a new bulb in the bulb holder by push- 1. Remove the bulb holder (together with the ing it inward and turning it clockwise. bulb) by turning it counterclockwise. 1. Bulb 2. Bulb holder 1.

  • Page 132: Headlight Beam Adjustment

    EBU10890 Headlight beam adjustment It is advisable to have a Yamaha dealer make this adjustment. To raise the beam, turn the adjusting screw in direction a. To lower the beam, turn the adjusting screw in direction b. 1. Adjusting screw...

  • Page 133: Troubleshooting

    Fuel can ignite or explode, causing severe procedure for making checks. If your machine injury or property damage. requires any repair, take it to a Yamaha dealer. HOW TO AVOID THE HAZARD Do not smoke when checking the fuel sys- The skilled technicians at a Yamaha dealership tem.

  • Page 134: Troubleshooting Chart

    2. Compression Use electric starter There is compresson. Compression normal. to see if there is compression. No compression. Ask a Yamaha dealer to inspect. Wipe clean with dry 3. Ignition cloth. Remove plug and Spark good. Ignition system normal. check electrodes.

  • Page 135: Cleaning And Storage

    EBU00417 CLEANING AND STORAGE Excessive water pressure may cause water A. CLEANING seepage and deterioration of wheel bearings, Frequent, thorough cleaning of your machine brakes, transmission seals and electrical will not only enhance its appearance but will devices. Many expensive repair bills have improve its general performance and extend the resulted from improper high pressure deter- useful life of many components.
  • Page 136 7. Clean the seat with a vinyl upholstery clean- q WARNING er to keep the cover pliable and glossy. POTENTIAL HAZARD 8. Automotive type wax may be applied to all Operation with wet brakes after washing. painted and chrome plated surfaces. Avoid combination cleaner-waxes.

  • Page 137: Storage

    Consult a Do not store the battery in an excessively Yamaha dealer if the fuel system needs to be warm or cold place (less than 0°C (30°F) or drained instead.

  • Page 138: Specifications

    EBU00428 SPECIFICATIONS Model YFM125G Dimension: Overall length 1,710 mm ( 67.3 in) Overall width 990 mm ( 39.0 in) Overall height 980 mm ( 38.6 in) Seat height 705 mm ( 27.8 in) Wheel base 1,080 mm ( 42.5 in) Ground clearance 145 mm ( 5.71 in) Minimum turning radius...
  • Page 139 Model YFM125G Engine oil/final transmission oil: 0° 10° 30° 50° 70° 90° 110° 130°F Type YAMALUBE 4 (20W40) or SAE20W40 YAMALUBE 4 (10W30) or SAE10W30 SAE 5W30 –20° –10° 0° 10° 20° 30° 40° 50°C Recommended engine oil/final transmission API Service SE, SF, SG type or higher oil classification: 8 Do not use oils with a diesel specification of “CD”...
  • Page 140 Model YFM125G Air filter: for engine Wet type element for V-belt case Dry type element Fuel: Type UNLEADED GASOLINE ONLY Tank capacity 7.6 L (1.67 Imp gal, 2.01 US gal) Reserve amount 1.3 L (0.29 Imp gal, 0.34 US gal) Carburetor: Type/manufacturer VM18SH/MIKUNI...
  • Page 141 Model YFM125G Chassis: Frame type Steel tube Caster angle 6° Trail 15 mm (0.59 in) Tire: Type Tubeless AT20 × 7 - 8 Size: Front AT22 × 10 - 8 Rear Manufacturer/type: Front DUNLOP/KT536A Rear DUNLOP/KT537A Brake: Front brake type Drum brake Operation Right hand operation...
  • Page 142 Model YFM125G Wheel travel: Front 70 mm (2.8 in) Rear 80 mm (3.2 in) Electrical: Ignition system DC. C.D.I. Charging system A.C. Magneto Battery type/voltage, capacity 12N12C-4A-2/12V, 12Ah Headlight type: Bulb Bulb voltage, wattage × quantity: 12V, 30 W/30 W × 2 Headlight 12V, 5 W/21W ×...

  • Page 143: Noise Regulation

    EBU13640 NOISE REGULATION TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inopera- tive 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 144: Maintenance Record

    EBU13653 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. MAINTENACE DATE OF SERVICING DEALER...
  • Page 145 EBU00432 13-1...
  • Page 146 13-2...
  • Page 147 EBU00435 14-1...
  • Page 148 14-2...
  • Page 149 EBU00436 Indicates a potential hazard that could result in serious injury or death. 14-3...
  • Page 150 EBU00437 PROTECT YOUR INVESTMENT...
  • Page 151 9 with a passenger - passengers affect balance and steering and increase risk of losing control. LOCATE AND READ OWNER’S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS. (For replacement manual, call 1-800-532-1558) YAMAHA MOTOR CO., LTD. PRINTED IN JAPAN PRINTED ON RECYCLED PAPER 2005.3-1.1x1 !
  • Page 152 8 TAKE THE FREE HANDS-ON TRAINING COURSE OFFERED BY YAMAHA – ASK YOUR DEALER FOR DETAILS OR CALL 1-800-887-2887 If you have any questions about these points, or if you purchased your ATV from an authorized Yamaha dealership and were not informed of the age recommendation for your ATV by the dealership, please fill out the information below and mail this card to yamaha today.
  • Page 153 NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES FIRST CLASS PERMIT NO. 4 CYPRESS, CA POSTAGE WILL BE PAID BY ADDRESSEE YAMAHA MOTOR CORPORATION U.S.A. P.O. BOX 6555 CYPRESS, CALIFORNIA 90630-9989 ATTN: SALES ADMINISTRATION...

This manual is also suitable for:

2006 yfm125gvYfm125sYfm125gt2006 grizzly 125

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