Page 12 of 408

Yuki_DATA2:HM00G210_YFM660R-60:YFM350TOC-E.frame
EL
EBU00015
CONTENTS
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 ........... 3-5
Model label ......................................... 3-7
CONTROL FUNCTIONS ......................... 4-1
Main switch ........................................ 4-1
Indicator and warning lights ............. 4-3
Handlebar switches.......................... 4-11
Throttle lever .................................... 4-15
Speed limiter .................................... 4-17
Clutch lever ....................................... 4-19
Front brake lever .............................. 4-19
Rear brake pedal .............................. 4-21
Parking brake .................................... 4-23
Shift pedal......................................... 4-27Reverse knob .....................................4-27
Fuel tank cap .....................................4-29
Fuel cock ............................................4-29
Starter (choke) ...................................4-31
Seat ....................................................4-33
Front shock absorber adjustment....4-35
Rear shock absorber adjustment .....4-37
PRE-OPERATION CHECKS .....................5-1
Front and rear brakes .........................5-5
Fuel.......................................................5-9
Engine oil ...........................................5-13
Coolant...............................................5-17
Chain ..................................................5-19
Throttle lever .....................................5-21
Fittings and Fasteners ......................5-21
Lights .................................................5-21
Switches ............................................5-21
Tires ...................................................5-23
How to measure tire pressure .........5-27
Tire wear limit ...................................5-291
2
3
4
5
Page 14 of 408

Yuki_DATA2:HM00G210_YFM660R-60:YFM350TOC-E.frame
EL
Drive chain slack check .................... 8-77
Drive chain slack adjustment .......... 8-79
Lubricating the drive chain.............. 8-81
Cable inspection and lubrication .... 8-85
Brake and shift pedal/brake and
clutch lever lubrication .................. 8-85
Upper arm and lower arm pivot
lubrication....................................... 8-87
Rear arm pivot lubrication............... 8-89
Wheel removal ................................. 8-93
Wheel installation ............................ 8-95
Battery ............................................... 8-97
Battery maintenance ...................... 8-101
Fuse replacement ........................... 8-103
Replacing the headlight bulb ........ 8-105
Tail/brake light bulb
replacement.................................. 8-115
Troubleshooting ............................. 8-117
Troubleshooting chart ................... 8-119
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
Page 50 of 408
2-17
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-2.frameEL
WARNING
Always turn off the engine when refuel-
ing.
Do not refuel right after the engine has
been running and is still very hot.
Do not spill gasoline on the engine or ex-
haust pipe/muffler when refueling. Never
refuel while smoking, or while in the vi-
cinity of sparks, open flames, or other
sources of ignition such as the pilot lights
of water heaters and clothes dryers. Gas-
oline can catch fire and you could be
burned.
When transporting the machine in anoth-
er vehicle, be sure it is kept upright and
that the fuel cock is in the “OFF” position.
Otherwise, fuel may leak out of the carbu-
retor or fuel tank.
Gasoline is poisonous. If you should swal-
low some gasoline or inhale a lot of gaso-
line vapor, or get some gasoline in your
eyes, see your doctor immediately. If gas-
oline spills on your skin, wash with soap
and water. If gasoline spills on your cloth-
ing, change your clothes.
Page 54 of 408
3-1
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-3.frameEL
EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION
1. Seat
2. Fuel tank cap
3. Engine oil tank
4. Rear brake pedal
5. Headlight
6. Fuel cock
7. Throttle stop screw
8. Coolant reservoir
9. Tail/brake light10. Shift pedal
11. Clutch lever
12. Handlebar switches
13. Parking brake
14. Main switch
15. Reverse knob
16. Throttle lever
17. Front brake lever
NOTE:
The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
Page 62 of 408
4-1
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-4.frameEL
EBU00040
CONTROL FUNCTIONS
EBU00041
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.
Page 64 of 408
4-3
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-4.frameEL
1. Reverse indicator light “R”
2. Neutral indicator light “N”
3. Coolant temperature warning light “ ”
1. Témoin de marche arrière “R”
2. Témoin de point mort “N”
3. Témoin d’avertissement de la température du liquide de
refroidissement “ ”
1. Luz de control de marcha atrás “R”
2. Luz de control de punto muerto “N”
3. Luz de aviso de la temperatura del
refrigerante “ ”
EBU00802
Indicator and warning lights
EBU00602
Reverse indicator light “R”
This indicator light comes on when the trans-
mission is in reverse.
EBU00603
Neutral indicator light “N”
This indicator light comes on when the trans-
mission is in neutral.
Page 66 of 408
4-5
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-4.frameEL
EBU00713
Coolant temperature warning light “ ”
When the coolant temperature reaches a spec-
ified level, this light comes on to warn that the
coolant 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.
The coolant temperature warning light circuit
can be checked according to the procedure on
page 4-7.
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.
Page 68 of 408
4-7
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-4.frameEL
EBU00714
Coolant temperature warning light checking method
ACB-09E
Turn the main switch to “ON” and
the engine stop switch to “ ”.
Coolant temperature warning
light does not come on.Coolant temperature
warning light comes on.
Coolant temperature
warning light does
not come on.
Coolant temperature and
electrical circuit are OK.
Go ahead with riding.
Push the start switch with the
transmission in the neutral position.
Ask a Yamaha dealer to
inspect the electrical circuit.
Coolant temperature
warning light comes
on momentarily.