How it Works
Yamaha
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YFA1N
User Manual
149 pgs3.04 Mb0
PARTS CATALOGUE 01
55 pgs888.14 Kb0
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Yamaha YFA1N User Manual

w This ATV should not be ridden by anyone under 16 years of age.
OWNER’S MANUAL
3FA-28199-1D
YFA1N(C)
READ THIS MANUAL CAREFULLY!
It contains important safety information.
LIT-11626-14-03

INTRODUCTION

Congratulations on your purchase of the Yamaha YFA1. 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 machine. This manual includes important safety information. It provides information about spe- cial techniques and skills necessary to ride your machine. It also includes basic maintenance and inspection procedures. If you have any questions regarding the operation or maintenance of your machine, please consult a Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
8 READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND COM-
PLETELY BEFORE OPERATING YOUR MACHINE. MAKE SURE YOU UNDERSTAND ALL INSTRUCTIONS.
8 PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE MACHINE. 8 NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE TRAINING
IS AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-447-4700 FOR MORE INFOR­MATION.
8 THIS ATV, AND ANY OTHER ATV OVER 90cc, SHOULD NOT BE RIDDEN BY ANYONE UNDER
16 YEARS OF AGE.

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:
Q The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY
IS INVOLVED!
w 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.
cC A CAUTION indicates special precautions that must be taken to avoid damage to
the machine.
NOTE: A NOTE provides key information to make procedures easier or clearer.
IMPORTANT NOTICE
This machine is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to oper­ate this machine on any public street, road or highway. This machine 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 machine.
AFFIX DEALER
LABEL HERE
YFA1N(C)
OWNER’S MANUAL
© 2000 by Yamaha Motor Corporation, U.S.A.
1st Edition, March 2000
All rights reserved.
Any reprinting or unauthorized use
without the written permission
of Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Japan
P/N LIT-11626-14-03
LOCATION OF THE WARNING AND
SPECIFICATION LABELS.......................1-1
SAFETY INFORMATION .........................2-1
DESCRIPTION AND MACHINE
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
Main switch ...........................................4-1
Indicator lights ......................................4-2
Handlebar switches ..............................4-2
Throttle lever ........................................4-4
Speed limiter ........................................4-5
Front brake lever ..................................4-6
Rear brake lever...................................4-6
Parking brake .......................................4-7
Drive select lever..................................4-8
Fuel tank cap........................................4-8
Fuel cock ..............................................4-9
Starter (choke)....................................4-10
Seat ....................................................4-10
w
Indicates a potential hazard that could result in serious injury or death.
CONTENTS
1
2
3
4
PRE-OPERATION CHECKS ...................5-1
Front and rear brakes ...........................5-2
Fuel ......................................................5-3
Engine and transmission oill.................5-5
Chain ....................................................5-6
Throttle lever ........................................5-6
Fittings and fasteners ...........................5-6
Lights....................................................5-6
Switches ...............................................5-6
Battery ..................................................5-6
Tires .....................................................5-7
How to measure tire pressure ..............5-8
Tire wear limit .......................................5-9
OPERATION............................................6-1
Starting a cold engine...........................6-1
Starting a warm engine ........................6-3
Warming up ..........................................6-3
Drive select lever operation and
reverse driving....................................6-4
Engine break-in ....................................6-6
Parking .................................................6-7
Parking on a slope................................6-8
Accessories and loading ......................6-9
Riding Your ATV.......................................7-1
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 ...............................7-22
Climbing uphill ....................................7-24
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
5
6
7
PERIODIC MAINTENANCE AND
ADJUSTMENT.........................................8-1
Owner’s manual and tool kit .................8-1
Periodic maintenance/Lubrication ........8-3
Engine oil..............................................8-5
Transmission oil ...................................8-7
Spark plug inspection ...........................8-9
Air filter cleaning.................................8-10
Idle speed adjustment ........................8-15
Valve clearance adjustment ...............8-16
Throttle lever adjustment....................8-17
Front and rear brake shoe
inspection .........................................8-18
Front brake lever free play
adjustment........................................8-19
Rear brake adjustment .......................8-21
Drive chain slack check......................8-23
Drive chain slack adjustment..............8-23
Drive chain cleaning and
lubrication .........................................8-25
Draining the V-belt compartment........8-26
Cable inspection and lubrication ........8-26
Brake lever lubrication........................8-27
Knuckle shaft, lower arms and
steering shaft lubrication ..................8-27
Wheel removal ...................................8-28
Wheel installation ...............................8-28
Battery ................................................8-29
Replenishing the battery fluid .............8-31
Fuse replacement...............................8-32
Replacing the headlight bulb ..............8-33
Headlight beam adjustment................8-35
Spark arrester cleaning ......................8-35
Troubleshooting..................................8-37
Troubleshooting chart.........................8-38
CLEANING AND STORAGE....................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-3
SPECIFICATIONS .................................10-1
9
10
8
NOISE REGULATION............................11-1
MAINTENANCE RECORD ....................12-1
ATV LIMITED WARRANTY ...................13-1
YAMAHA EXTENDED SERVICE
(Y.E.S.)...................................................14-1
11
12
13
14
1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
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1-2
Read and understand all of the labels on your machine. They contain important information for safe and proper operation of your 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.
1
21
5FE-21697-01 3FA-21696-41
1-3
43
5
3FA-2151E-A0
DRIVE SELECT LEVER
8 Read owner’s manual carefully before operating. 8 ATV MUST be stopped before shifting select
lever.
8 Shifting into reverse is impossible without
applying rear brake lever.
5FE-21568-01
q
WARNING
NEVER ride as a
passenger.
Passengers can cause a loss of control, resulting in SEVERE INJURY or DEATH.
5FE-2151H-01
2-1
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:
8 Read this manual and all labels carefully and follow the operating procedures described. 8 Never operate an ATV without proper training or instruction. Take a Training Course.
Beginners should receive training from a certified instructor. Contact an authorized ATV dealer or call 1-800-447-4700 to find out about the training courses nearest you.
8 Always follow the age recommendation:
- A child under 16 years old should never operate an ATV with engine size greater than 90cc.
8 Never allow a child under age 16 to operate an ATV without adult supervision, and never allow con-
tinued use of an ATV by a child if he or she does not have the abilities to operate it safely.
8 Never carry a passenger on an ATV.

q SAFETY INFORMATION

2
2-2
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.
8 Never consume alcohol or drugs before or while operating this ATV. 8 Never operate at speeds too fast for your skills or the conditions. Always go at a speed that is prop-
er for the terrain, visibility and operating conditions, and your experience.
8 Never attempt wheelies, jumps, or other stunts. 8 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.
8 Always keep both hands on the handlebars and both feet on the footboards of the ATV during oper-
ation.
8 Always go slowly and be extra careful when operating on unfamiliar terrain. Always be alert to
changing terrain conditions when operating the ATV.
2-3
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. Do not turn at excessive speed.
8 Never operate the ATV on hills too steep for the ATV or for your abilities. Practice on smaller hills
before attempting larger hills.
8 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. Never go over the top of a hill at high speed.
8 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.
8 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.
2-4
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 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.
8 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.
8 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.
8 Never operate an ATV in fast flowing water or in water deeper than that recommended in this manu-
al. 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.
8 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.
8 Always use the size and type tires specified in this manual. Always maintain proper tire pressure as
described in this manual.
8 Never modify an ATV through improper installation or use of accessories.
2-5
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.
2-6
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. Do not spill gasoline on the engine or exhaust pipe/muffler when refueling. Never refuel while smoking, or while 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 machine in another vehicle, be sure it is kept upright and that the fuel cock is in the “OFF” position.
q
WARNING
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.
2-7
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 machine in an area with adequate ventilation.
q
WARNING
3-1
1. Seat 11. Rear brake lever
2. Drive select lever 12. Parking brake
3. Headlight 13. Reverse indicator light
4. Front cover 14. Neutral indicator light
5. Front wheel 15. Front brake lever
6. Starter (choke) 16. Throttle lever
7. Fuel cock 17. Main switch
8. Rear wheel 18. Fuel tank cap
9. Spark arrester 19. Handlebar switch
10. Footboard
NOTE:
The machine you have purchased may differ slightly from those shown in the figures of this manual.

DESCRIPTION AND MACHINE IDENTIFICATION

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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:
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.
3-2
1
6
3
1. Key identification number
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Vehicle identification number
The vehicle identification number is stamped into the frame.
NOTE:
The vehicle identification number is used to identify your machine.
Model label
The model label is affixed to the frame. Record the information on this label in the space provid­ed. This information will be needed to order spare parts from your Yamaha dealer.
3-3
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1. Vehicle identification number
1. Model label
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CONTROL FUNCTIONS

w
Indicates a potential hazard that could result in serious injury or death.
Main switch
Functions of the respective switch positions are as follows:
ON: Engine can be started only at this position and the headlight and taillight 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
4
OFF ON
Indicator lights
Reverse indicator light “REVERSE”
This indicator light comes on when the transmis­sion is in reverse.
Neutral indicator light “NEUTRAL”
This indicator light comes on when the transmis­sion is in neutral.
Handlebar switches
Engine stop switch “ENG. STOP”
Make sure that the engine stop switch is in the "RUN" position. 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 turned to “OFF”.
4-2
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1. Main switch
2. Reverse indicator light “REVERSE”
3. Neutral lindicator light “NEUTRAL“
1. Engine stop switch “ENG. STOP“
2. Lights switch “LIGHTS”
3. Start switch “START“
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Start switch “START”
The starter motor cranks the engine when this switch is pushed.
cC
See starting instructions prior to starting engine (see page 6-1 for details).
NOTE:
If the starter switch is pushed with the main switch “ON” and the engine stop switch “OFF”, the starter motor will be activated but the engine will not start. To start the engine, be sure to position the engine stop switch at “RUN”.
Light switch “LIGHTS”
Turn the switch to the “LO” position to switch on the low beam and the taillight. Turn the switch to the “HI” position to switch on the high beam and the taillight. Turn the switch to the “OFF” position to switch off the headlight and the taillight.
NOTE:
The headlight and the taillight can be turned on only when the engine is started.
4-3
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.
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.
4-4
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 can't find or solve the problem yourself.
q
WARNING
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1. Throttle lever
Speed limiter
The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. Screwing in the adjuster limits the maximum engine power available and decreases the maximum speed of the ATV.
4-5
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a
POTENTIAL HAZARD
Improper adjustment of the speed limiter and throttle.
WHAT CAN HAPPEN
The throttle cable could be damaged. Improper throttle operation could result. You could lose control, have an accident or be injured.
HOW TO AVOID THE HAZARD
Do not turn the speed adjuster out more than 15 mm (0.6 in). Always make sure the throttle lever free play is adjusted to 1.0 ~
4.0 mm (0.04 ~ 0.16 in). See page 8-17.
q
WARNING
1. Adjuster 2. Locknut a. 15 mm (0.6 in)
Front brake lever
The front brake lever is located on the right han­dlebar. Pull it toward the handlebar to apply the front brake.
Rear brake lever
The rear brake lever is located on the left han­dlebar. Pull it toward the handlebar to apply the rear brake.
4-6
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1. Front brake lever 1. Rear brake lever
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Parking brake
Use the parking brake when you have to start the engine or park the machine, 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
q
POTENTIAL HAZARD
Improper use of the parking brake.
WHAT CAN HAPPEN
The ATV could start moving unexpectedly if the parking brake is not applied before starting the engine. This could cause loss of control or a collision. The brake could overheat if you ride the ATV without releasing the parking brake. You could lose braking performance which could cause an accident. You could also wear out the brakes prematurely.
HOW TO AVOID THE HAZARD
Always set the parking brake before start­ing the engine. Always be sure you have released the parking brake before you begin to ride.
q
WARNING
1. Lock plate
4-8
Drive select lever
The drive select lever is used for driving the machine either forward or in reverse. Refer to page 6-4 for drive select lever operation.
Fuel tank cap
Remove the fuel tank cap by turning it counter­clockwise.
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a
a. Drive select lever 1. Neutral
2. For forward drive 3. For reverse drive
1. Fuel tank cap
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4-9
RES
OFF
ON
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.
ON: With the lever in this position, fuel flows
to the carburetor. Normal riding is done with the lever in this position.
RES: This indicates reserve. If you run out of
fuel while riding, turn the lever to this position. THEN FILL THE FUEL TANK AT THE FIRST OPPORTUNITY. After refuelling, return the fuel cock lever to the “ON” position.
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