Yamaha YFM400FT User Manual

READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER’S MANUAL
YFM400FT
WARNING
This ATV should not be ridden by anyone under 16 years of age.
5FU-F8199-15LIT-11626-18-08
EBU00776
EBU00941
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INTRODUCTION

Congratulations on your purchase of the Yamaha YFM400F. It represents the result of many years of Yamaha experience in the production of fine sporting, touring, and pace-setting 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. This manual will provide you with a good basic understanding of the features and operation of this ATV.
This manual includes important safety information. It provides information about
special techniques and skills necessary to ride your ATV.
It also includes basic maintenance and inspection procedures. If you have any questions regarding the operation or maintenance of your ATV, please consult a Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND COMPLETELY BEFORE OPERATING YOUR ATV. MAKE SURE YOU UNDERSTAND ALL INSTRUCTIONS.
PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE ATV.
NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE TRAINING IS AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-887-2887 FOR MORE INFORMATION.
THIS ATV, AND ANY OTHER ATV OVER 90cc, SHOULD NOT BE RIDDEN BY ANYONE UNDER 16 YEARS OF AGE.
EBU00801
WARNING
CAUTION:
NOTE:
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IMPORTANT MANUAL INFORMATION
FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS 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 machine.
A CAUTION indicates special precautions that must be taken to avoid damage to the machine.
A NOTE provides key information to make procedures easier or clearer.
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IMPORTANT NOTICE
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. This ATV complies with all applicable OFF-ROAD noise level and spark arrester laws and regu­lations in effect at the time of manufacture. Please check your local riding laws and regulations before operating this ATV.
EBU01067
YFM400FT
OWNER’S MANUAL
AFFIX DEALER
LABEL HERE
©2004 by Yamaha Motor Corporation,
U.S.A.
1st edition, April 2004 All rights reserved. Any reprinting or unauthorized use without the written
permission of
Yamaha Motor Corporation,
U.S.A. is expressly prohibited.
Printed in U.S.A.
P/N LIT-11626-18-08
EBU00014
WARNING
Indicates a potential hazard that could result in serious injury or death.

CONTENTS

LOCATION OF THE WARNING
1
AND SPECIFICATION LABELS....... 1-1
SAFETY INFORMATION.................. 2-1
2
DESCRIPTION AND MACHINE
3
IDENTIFICATION ............................. 3-1
Identification number records.......... 3-2
Key identification number................ 3-2
Vehicle identification number .......... 3-3
Model label ...................................... 3-3
CONTROL FUNCTIONS...................4-1
4
Main switch ......................................4-1
Indicator and warning lights.............4-2
Speedometer ...................................4-4
Fuel gauge .......................................4-4
Handlebar switches .........................4-5
Throttle lever ....................................4-7
Speed limiter ....................................4-8
Front brake lever..............................4-9
Brake pedal and rear brake
lever ...............................................4-9
Parking brake.................................4-10
Shift pedal ......................................4-11
Reverse knob ................................4-11
Recoil starter..................................4-12
Fuel tank cap .................................4-13
Fuel cock........................................4-13
Starter (choke) ...............................4-14
Seat................................................4-15
Storage box....................................4-16
Front carrier ...................................4-16
Rear carrier ....................................4-16
Front shock absorber
adjustment................................... 4-17
Rear shock absorber
adjustment................................... 4-18
Auxiliary DC jack........................... 4-19
PRE-OPERATION CHECKS ........... 5-1
5
Front and rear brakes ..................... 5-3
Fuel ................................................. 5-5
Engine oil ........................................ 5-7
Final gear oil.................................... 5-7
Differential gear oil .......................... 5-8
Throttle lever ................................... 5-8
Fittings and fasteners...................... 5-8
Lights............................................... 5-8
Switches.......................................... 5-8
Tires ................................................ 5-9
How to measure tire pressure....... 5-11
Tire wear limit................................ 5-12
OPERATION .....................................6-1
6
Starting a cold engine...................... 6-1
Starting a warm engine ...................6-3
Warming up ..................................... 6-3
Reverse knob operation and
reverse driving ...............................6-4
Shifting............................................. 6-5
To start out and accelerate.............. 6-5
To decelerate................................... 6-6
Engine break-in ...............................6-7
Parking............................................. 6-8
Parking on a slope........................... 6-9
Accessories and loading ...............6-10
RIDING YOUR ATV ..........................7-1
7
Getting to know your ATV ...............7-3
Ride with care and good
judgement...................................... 7-4
Be careful where you ride.............. 7-16
Turning your ATV ..........................7-23
Climbing uphill ............................... 7-25
Riding downhill ..............................7-30
Crossing a slope............................ 7-32
Crossing through shallow water.... 7-34
Riding over rough terrain............... 7-36
Sliding and skidding ......................7-38
What to do if .................................7-40
What to do .................................... 7-40
PERIODIC MAINTENANCE AND
8
ADJUSTMENT.................................. 8-1
Owner’s manual and tool kit............ 8-1
Periodic maintenance/
lubrication ...................................... 8-3
Engine oil and oil filter element ....... 8-6
Final gear oil .................................. 8-11
Differential gear oil......................... 8-14
Axle boots...................................... 8-16
Spark plug inspection.................... 8-17
Air filter element cleaning.............. 8-18
Spark arrester cleaning ................. 8-21
Carburetor adjustment................... 8-22
Idle speed adjustment ................... 8-23
Valve clearance adjustment.......... 8-24
Reverse lock release cable
adjustment................................... 8-24
Throttle lever adjustment ...............8-24
Front brake pad check...................8-25
Rear brake shoe inspection...........8-25
Brake fluid level check ...................8-26
Brake fluid replacement .................8-27
Front brake lever free play.............8-28
Brake pedal and rear brake lever
adjustment ...................................8-29
Adjusting the rear brake light
switch ...........................................8-32
Clutch adjustment ..........................8-33
Cable inspection and lubrication....8-34
Brake and shift pedal/
brake lever lubrication..................8-34
Wheel removal...............................8-35
Wheel installation...........................8-35
Battery............................................8-37
Battery maintenance......................8-38
Fuse replacement ..........................8-39
Replacing a headlight bulb ............8-41
Headlight beam adjustment...........8-43
Tail/brake light bulb
replacement .................................8-44
Troubleshooting ............................ 8-45
Troubleshooting chart ................... 8-47
CLEANING AND STORAGE............ 9-1
9
A. Cleaning...................................... 9-1
B. Storage ....................................... 9-3
SPECIFICATIONS.......................... 10-1
10
NOISE REGULATION.................... 11-1
11
MAINTENANCE RECORD ............ 12-1
12
ATV LIMITED WARRANTY............ 13-1
13
YAMAHA EXTENDED SERVICE
14
(Y.E.S.) ........................................... 14-1
EBU00464
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
1-1
Read and understand all of the labels on your machine. They contain important information for safe and proper operation of your ATV.
1
2
Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your
3
4
5
Yamaha dealer.
6
12
Overloading this ATV or carrying cargo improperly can change handling. stability and braking performance and can lead to an accident. Never exceed the maximum front cargo limit of
: 40kg (88 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's
Manual.
YAMAHA
WARNING
5ND-F4877-00
1-2
7
8
9
10
11
12
13
14
3
Overloading this ATV or carrying cargo improperly can change handling. stability and braking performance and can lead to an accident. Never exceed the maximum rear cargo limit of
: 80kg (176 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's
Manual.
YAMAHA
WARNING
4
5ND-F4897-00
5
MAXIMUM.LOADING LIMITMAXIMUM LOADING LIMIT
PULLING LOAD: 4020 N(410kgf
904 l b f
TONGUE WEIGHT: 147 N
33 lbf
(
15kgf
5FU-F151K-00
)
)
1-3
67
8
1-4
EBU13351

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. SEVERE INJURY OR DEATH can result if you do not follow these instructions:
Read this manual and all labels carefully and follow the operating procedures described.
Never operate an ATV without proper training or instruction. ners should receive training from a certified instructor. Contact an authorized ATV dealer or call 1-800-887-2887 to find out about the training courses nearest you.
Always follow the age recommendation: – A child under 16 years old should never operate an ATV with engine size greater than 90cc.
Never allow a child under age 16 to operate an ATV without adult supervision, and never allow continued use of an ATV by a child if he or she does not have the abilities to operate it safely.
Never carry a passenger on an ATV.
Take a Training Course.
Begin-
2-1
Always avoid operating an ATV on any paved surfaces, including sidewalks, driveways, park­ing lots and streets.
Never operate an ATV on any public street, road or highway, even a dirt or gravel one.
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, a long-sleeved shirt or jacket, and long pants.
Never consume alcohol or drugs before or while operating this ATV.
Never operate at speeds too fast for your skills or the conditions. Always go at a speed 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. Al­ways follow the inspection and maintenance procedures and schedules described in this man­ual.
Always keep both hands on the handlebars and both feet on the footboards of the ATV during operation.
Always go slowly and be extra careful when operating on unfamiliar terrain. Always be alert to changing terrain conditions when operating the ATV.
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.
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14
2-2
Always follow proper procedures for turning as described in this manual. Practice turning at low speeds before attempting to turn at faster speeds. Do not turn at excessive speed.
Never operate the ATV on hills too steep for the ATV or for your abilities. Practice on smaller hills before attempting larger hills.
Always follow proper procedures for climbing hills as described in this manual. Check the ter­rain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. Shift your weight forward. Never open the throttle suddenly or make sudden gear changes. Never go over the top of a hill at high speed.
Always follow proper procedures for going down hills and for braking on hills as described in this manual. Check the terrain carefully before you start down any hill. Shift your weight back­ward. Never go down a hill at high speed. Avoid going down a hill at an angle that would cause the vehicle to lean sharply to one side. Go straight down the hill where possible.
Always follow proper procedures for crossing the side of a hill as described in this manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV. Never attempt to turn the ATV around on any hill until you have mastered the turning technique described in this manual on level ground. Avoid crossing the side of a steep hill if possible.
2-3
Always use proper procedures if you stall or roll backwards when climbing a hill. To avoid stall­ing, 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 uphill. Turn the ATV around and remount, following the procedure described in this manual.
Always check for obstacles before operating in a new area. Never attempt to operate over large obstacles, such as large rocks or fallen trees. Always follow proper procedures when op­erating over obstacles as described in this manual.
Always be careful when skidding or sliding. Learn to safely control skidding or sliding by prac­ticing at low speeds and on level, smooth terrain. On extremely slippery surfaces, such as ice, go slowly and be very cautious in order to reduce the chance of skidding or sliding out of con­trol.
Never operate an ATV in fast flowing water or in water deeper than that recommended in this manual. Remember that wet brakes may have reduced stopping ability. Test your brakes after leaving water. If necessary, apply them several times to let friction dry out the linings.
Always be sure there are no obstacles or people behind you when you operate in reverse. When it is safe to proceed in reverse, go slowly.
2-4
Always use the size and type of tires specified in this manual.
Always maintain proper tire pressure as described in this manual.
Never modify an ATV through improper installation or use of accessories.
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 or pulling a trailer. Allow greater distance for braking.
FOR MORE INFORMATION ABOUT ATV SAFETY,
call the Consumer Products Safety Com-
mission at 1-800-638-2772, or the ATV Distributors Safety Hotline at 1-800-852-5344.
2-5
WARNI NG
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 immediately after the en­gine has been running and is still very hot. Do not spill gasoline on the engine or exhaust pipe/muffler when refueling. Never refuel while smoking, or in the vi­cinity of sparks, open flames, or other sources of ignition such as the pilot lights of water heaters and clothes dry­ers.
When transporting the ATV in another vehicle, be sure it is kept upright and that the fuel cock is in the “OFF” posi­tion. Otherwise, fuel may leak out of the carburetor or fuel tank. WHAT CAN HAPPEN Gasoline is poisonous and can cause injuries. HOW TO AVOID THE HAZARD If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gasoline in your eyes, see your doctor immediately. If gasoline spills on your skin, wash with soap and water. If gasoline spills on your clothing, change your clothes.
2-6
WARNI NG
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.
2-7
EBU00032

DESCRIPTION AND MACHINE IDENTIFICATION

1
2
3
4
5
6
7
1. Spark arrester
2. Rear carrier
3. Seat
4. Auxiliary DC jack
5. Front carrier
6. Brake pedal
7. Headlights
8. Fuel cock
9. Recoil starter
10. Tail/brake light
11. Rear wheel
12. Shift pedal
13. Front wheel
14. Rear brake lever
15. Parking brake lock plate
16. Starter (choke)
17. Speedometer
18. Reverse knob
19. On command four-wheel drive switch
20. Front brake lever
21. Throttle lever
22. Fuel gauge
23. Main switch
24. Left handlebar switches
NOTE:
The machine you have purchased may differ slightly from those shown in the figures of this manual.
3-1
8
9
10
11
12
13
14
EBU00600
Identification number records
Record the key identification number, vehicle identification number and model label infor­mation in the spaces provided for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen.
1. KEY IDENTIFICATION NUMBER:
2. VEHICLE IDENTIFICATION NUMBER:
3. MODEL LABEL INFORMATION:
EBU00035

Key identification number

The key identification number is stamped on the key as shown in the following illustration. This number can be used for ordering a new key.
1. Key identification number
3-2
EBU00036

Vehicle identification number

The vehicle identification number is stamped into the frame.
1. Vehicle identification number
NOTE:
The vehicle identification number is used to identify your machine.
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Model label
The model label is affixed to the location in the 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. Model label
3-3
EBU00039

CONTROL FUNCTIONS

WARNING
Indicates a potential hazard that could result in serious injury or death.
EBU12490

Main switch

Functions of the respective switch positions are as follows: ON: The engine can be started only at this position and the headlights, taillight and meter lighting come on when the light switch is on. OFF: All electrical circuits are switched off. The key can be removed in this position.
4-1
EBU00802

Indicator and warning lights

1. Reverse indicator light “REVERSE”
2. Neutral indicator light “NEUTRAL”
3. Oil temperature warning light “”
4. Four-wheel-drive indicator light “”
EBU00044
Reverse indicator light “REVERSE”
This indicator light comes on when the trans­mission is in reverse.
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Neutral indicator light “NEUTRAL”
This indicator light comes on when the trans­mission is in neutral.
EBU01140
Oil temperature warning light “”
When the oil temperature reaches a specified level, this light comes on to warn that the en­gine oil temperature is too hot. If the light comes on during operation, stop the engine as soon as it is safe to do so and allow the en­gine to cool down for about 10 minutes.
CAUTION:
_
The engine may overheat if the ATV is
overloaded. If this happens, reduce the load to specification. Restart after making sure that the light
is out. Continuous use while the light is on may cause damage to the en­gine.
_
EBU00605
Four-wheel-drive indicator light “”
This indicator light comes on when the 2WD/ 4WD switch is in the 4WD position.
NOTE:
Due to the synchronizing mechanism in the differential gear case, the light may not come on until the ATV starts moving.
4-2
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14
EBU00733
ACB-10E
Oil temperature warning light checking method
Turn the main switch to “ON” and the engine stop switch to “”.
Oil temperature warning light does not come on.
Push start switch with the transmission in neutral.
Oil temperature warning light comes on momentarily.
Engine oil temperature and electrical circuit are OK. Go ahead with riding.
Oil temperature warning light does not come on.
Ask a Yamaha dealer to inspect the electrical circuit.
4-3
Oil temperature warning light comes on.
Check engine oil temperature.
Oil tempera­ture is low.
Oil tempera­ture is high.
Allow to cool.
EBU00051
Speedometer
The speedometer shows riding speed. This speedometer is equipped with an odometer and trip odometer. The trip odometer can be reset to “0” with the reset knob. Use the trip odometer to estimate how far you can ride on a tank of fuel before going to reserve. This in­formation will enable you to plan fuel stops in the future.
1. Reset knob
2. Speedometer
3. Odometer
4. Trip odometer
EBU00052
Fuel gauge
The fuel gauge indicates the amount of fuel in the fuel tank. When the needle reaches the red line, refill the tank at the first opportunity.
1. Fuel gauge 2. Red line
NOTE:
If the machine runs out of fuel, move the fuel cock lever to the “RES” position. Approxi­mately 4.0 L (0.88 Imp gal, 1.06 US gal) of fuel will be remaining in the tank.
4-4
EBU00053

Handlebar switches

1. Light switch //OFF
2. Engine stop switch /
3. Start switch “”
EBU12050
Engine stop switch /
Make sure that the engine stop switch is set to “” before starting the engine. The engine stop switch controls ignition and can be used at all times to stop the engine, especially in an emergency. The engine will not start or run when the engine stop switch is set to “”.
EBU00607

Start switch “”

The starter motor cranks the engine when this switch is pushed.
CAUTION:
_
See starting instructions prior to starting the engine. (See page 6-1 for details.)
_
EBU12510
Light switch //OFF
Set the switch to “” to turn on the low beams, the taillight and the meter lighting. Set the switch to “” to turn on the high beams, the taillight and the meter lighting. Set the switch to “OFF” to turn off all the lights.
CAUTION:
_
Do not use the headlights with the engine turned off for more than thirty minutes. The battery may discharge to the point that the starter motor will not operate properly. If this should happen, remove the battery and recharge it.
_
4-5
EBU00601
On-Command four-wheel drive switch 2WD/4WD
To change from two-wheel drive (2WD) to four-wheel drive (4WD), stop the ATV and set the switch to the 4WD position. To change from four-wheel drive (4WD) to two-wheel drive (2WD), stop the ATV and set the switch to the 2WD position.
1. On-Command four-wheel drive swich “2WD/4WD”
WARNI NG
POTENTIAL HAZARD Changing from 2WD to 4WD or from 4WD to 2WD while the ATV is moving. WHAT CAN HAPPEN The ATV handles differently in 2WD than in 4WD in some circumstances. Changing from 2WD to 4WD or from 4WD to 2WD while moving may cause the ATV to unexpectedly handle differ­ently. This could distract the operator and increase the risk of losing control and an accident. HOW TO AVOID THE HAZARD Always stop the ATV before changing from 2WD to 4WD or vice-versa.
4-6
EBU00062

Throttle lever

Once the engine is running, movement of the throttle lever will increase the engine speed. Regulate the speed of the machine by varying the throttle position. Because the throttle is spring-loaded, the machine will decelerate, and the engine will return to an idle any time the hand is removed from the throttle lever.
1. Throttle lever
Before starting the engine, check the throttle to be sure it is operating smoothly. Make sure it returns to the idle position as soon as the le­ver is released.
WARNI NG
POTENTIAL HAZARD Malfunction of throttle.
WHAT CAN HAPPEN The throttle could be hard to operate, making it difficult to speed up or slow down when you need to. This could cause an accident.
HOW TO AVOID THE HAZARD Check the operation of the throttle lever before you start the engine. If it does not work smoothly, check for the cause. Correct the problem before riding the ATV. Consult a Yamaha dealer if you cant find or solve the problem yourself.
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