2002 YAMAHA YFM80 brake

LOCATION OF THE WARNING AND
SPECIFICATION LABELS .......................1-1
SAFETY INFORMATION .........................2-1
DESCRIPTION AND MACHINE
IDENTIFICATION.....................................3-1
Identification number records ...............3-3
Key identification number .....................3-5
Vehicle identification number ...............3-7
Model label ...........................................3-9
CONTROL FUNCTIONS..........................4-1
Main switch ...........................................4-1
Indicator lights ......................................4-3
Handlebar switches ..............................4-3
Throttle lever ........................................4-7
Speed limiter ........................................4-9
Front brake lever ................................4-11Rear brake pedal and lever ................4-13
Parking brake .....................................4-15
Shift pedal ..........................................4-17
Fuel tank cap ......................................4-17
Fuel cock ............................................4-19
Choke lever ........................................4-21
Seat ....................................................4-23
PRE-OPERATION CHECKS ...................5-1
Front and rear brakes ...........................5-5
Fuel ......................................................5-9
Engine oil ............................................5-11
Final gear oil .......................................5-15
Throttle lever ......................................5-17
Fittings and fasteners .........................5-17
Switches .............................................5-17
Battery ................................................5-17
Tires ...................................................5-19
How to measure tire pressure ............5-23
Tire wear limit .....................................5-25
EBU00015
CONTENTS
1
2
3
4
5
5NE-9-61 ~3 4/26/01 1:24 PM Page 14

OPERATION ............................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine ......................6-11
Warming up ........................................6-11
Shifting ...............................................6-13
To start out and accelerate .................6-15
To decelerate .....................................6-19
Engine break-in ..................................6-21
Parking ...............................................6-25
Parking on a slope ..............................6-27
Accessories and loading ....................6-29
Riding Your ATV ......................................7-1
Getting to know your ATV.....................7-3
Ride with care and good
judgement ...........................................7-5
Be careful where you ride ...................7-27
Turning your ATV ...............................7-41
Climbing uphill ....................................7-45
Riding downhill ...................................7-57
Crossing a slope .................................7-61Crossing through shallow water .........7-65
Riding over rough terrain ....................7-69
Sliding and skidding ...........................7-71
What to do if .......................................7-75
What to do ..........................................7-75
PERIODIC MAINTENANCE AND
ADJUSTMENT .........................................8-1
Owner’s manual and tool kit .................8-3
Periodic maintenance/Lubrication ........8-7
Engine oil ............................................8-13
Final gear oil .......................................8-19
Spark plug inspection .........................8-23
Air filter cleaning .................................8-27
Carburetor adjustment ........................8-33
Idle speed adjustment ........................8-35
Valve clearance adjustment ...............8-37
Cam chain adjustment ........................8-37
Front and rear brake shoe
inspection .........................................8-396
7
8
5NE-9-61 ~3 4/26/01 1:24 PM Page 15

Front brake lever free play
adjustment ........................................8-41
Rear brake lever and pedal
adjustment ........................................8-45
Clutch adjustment ...............................8-49
Cable inspection and lubrication ........8-51
Brake and shift pedal/brake
lever lubrication ................................8-53
Knuckle shaft and steering shaft
lubrication .........................................8-53
Wheel removal ...................................8-55
Wheel installation ...............................8-55
Battery ................................................8-57
Replenishing the battery fluid .............8-61
Fuse replacement ...............................8-65
Troubleshooting ..................................8-67
Troubleshooting chart .........................8-71
CLEANING AND STORAGE....................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-7SPECIFICATIONS .................................10-1
HOW TO USE THE CONVERSION
TABLE ....................................................11-1
9
10
11
5NE-9-61 ~3 4/26/01 1:24 PM Page 16

2-13
8Never 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.
8Always use the size and type tires specified in
this manual.
8Always maintain proper tire pressure as
described in this manual.
8Never modify an ATV through improper instal-
lation or use of accessories.
5NE-9-61 ~3 4/26/01 1:24 PM Page 48

3-1
EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION
1. Seat 9. Rear brake lever
2. Front cover 10. Parking brake
3. Rear brake pedal 11. Neutral indicator light
4. Fuel cock 12. Front brake lever
5. Rear wheel 13. Throttle lever
6. Footrest 14. Main switch
7. Shift pedal 15. Fuel tank cap
8. Front wheel 16. Handlebar switch
NOTE:
The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
qw
e
o!1!0!2
!6
!5
!4 !3
iuy
t
r
5NE-9-61 ~3 4/26/01 1:24 PM Page 54

4-11
EBU00070
Front brake lever
The front brake lever is located on the right han-
dlebar. Pull it toward the handlebar to apply the
front brake.q
1. Front brake lever1. Levier de frein avant1. Palanca del freno delantero
5NE-9-61 4~5 4/26/01 1:26 PM Page 10

4-13
EBU00073
Rear brake pedal and lever
The brake pedal is located on the right side of
the machine and the brake lever is located on
the left handlebar. Push down on the pedal or
pull the lever toward the handlebar to apply the
rear brake.
q
q
1. Rear brake pedal1. Pédale de frein arrière1. Pedal del freno trasero
1. Rear brake lever
1. Levier de frein arrière
1. Palanca del freno trasero
5NE-9-61 4~5 4/26/01 1:26 PM Page 12

4-15
EBU00075
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.
w
8Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is
not applied. This could cause loss of con-
trol or a collision.
8Always be sure you have released the
parking brake before you begin to ride.
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.
q
1. Lock plate1. Plaque de verrouillage1. Placa de bloqueo
5NE-9-61 4~5 4/26/01 1:26 PM Page 14