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 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 108 of 408

5-1
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-5.frameEL
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes• Check operation, free play, fluid level and fluid leakage.
• Fill with DOT 4 brake fluid if necessary.5-5 ~ 5-7,
8-59 ~ 8-69
Clutch• Check operation, condition and lever free play. 8-75
Parking brake• Check operation, condition and cable slack. 8-71 ~ 8-73
Fuel• Check fuel level.
• Fill with fuel if necessary.5-9 ~ 5-11
Engine oil• Check oil level.
• Fill with oil if necessary.5-13 ~ 5-15,
8-17 ~ 8-29
Coolant reservoir• Check coolant level.
• Fill with coolant if necessary.5-17, 8-31
Drive chain• Check chain slack and condition.
• Adjust if necessary.5-19, 8-77 ~ 8-83
Throttle• Check for proper throttle cable operation. 5-21, 8-57
Wheels and tires• Check tire pressure, wear and damage.5-23 ~ 5-29,
8-93 ~ 8-95
Fittings and Fasteners• Check all fittings and fasteners. 5-21
Lights• Check for proper operation. 5-21, 8-105 ~ 8-115
Page 128 of 408
5-21
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-5.frameEL
EBU00151
Throttle lever
Check to see that the throttle lever operates
correctly. It must open smoothly and spring
back to idle position when released. Repair as
necessary for proper operation.
EBU00152
Fittings and Fasteners
Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service Man-
ual for correct tightening torque.
EBU00803
Lights
Check the headlight and tail/brake light to
make sure they are in working condition. Re-
pair as necessary for proper operation.
EBU00155
Switches
Check the operation of the headlight switch,
engine stop switch and any other switches. Re-
pair as necessary for proper operation.
Page 146 of 408
6-9
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-6.frameEL
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a
cold engine” section. The starter (choke)
should not be used. The throttle should be
opened slightly.
EBU00538
Warming up
To get maximum engine life, always warm up
the engine before starting off. Never accelerate
hard with a cold engine! To see whether or not
the engine is warm, check if it responds to the
throttle normally with the starter (choke)
turned off.
NOTE:
When the parking brake is used, engine speed
is limited to 2,300 r/min. Be sure the parking
brake is released before moving the throttle le-
ver. Otherwise, the engine will misfire, pre-
venting normal operation.
Page 148 of 408
6-11
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-6.frameEL
EBU00816
Reverse knob operation and reverse driving
CAUTION:
Before shifting, stop the machine and return
the throttle lever to its closed position. Other-
wise the transmission may be damaged.
1. Bring the machine to a complete stop, re-
turn the throttle lever to the closed posi-
tion, apply the clutch lever, and shift the
transmission into first gear.
2. While applying the rear brake pedal, turn
the reverse knob clockwise with your right
hand.
3. Shift the transmission into reverse by
pressing down on the shift pedal.
NOTE:
When in reverse, the reverse indicator light
should be on. If the light does not come on, ask
a Yamaha dealer to inspect the machine.
1. Reverse knob
2. Shift pedal
1. Bouton de marche arrière
2. Pédale de sélection
1. Botón de marcha atrás
2. Pedal del cambio
Page 368 of 408
8-115
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-8.frameEL
1. Lens 2. Screw (× 2)
1. Lentille 2. Vis (× 2)
1. Lente 2. Tornillo (× 2)
1. Bulb
1. Ampoule
1. Bonbilla
EBU00800
Tail/brake light bulb replacement
1. Remove the screws and the lens.
2. Remove the defective bulb by pushing it
inward and turning it counterclockwise.
3. Install a new bulb by pushing it inward
and turning it clockwise.
4. Install the lens and tighten the screws.
CAUTION:
Do not over-tighten the screws as the lens
may break.