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 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 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 72 of 408
4-11
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-4.frameEL
1. Lights switch
2. Engine stop switch
3. Start switch “ ”
1. Contacteur d’éclairage
2. Coupe-circuit du moteur
3. Contacteur du démarreur “ ”
1. Interruptor de luces
2. Interruptor de paro del motor
3. Interruptor de arranque “ ”
EBU00053
Handlebar switches
EBU00606
Engine stop switch
Make sure that the engine stop switch is in the
“ ” position. The engine stop switch con-
trols 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 en-
gine stop switch is turned 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 6-3 for details.)
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 370 of 408

8-117
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-8.frameEL
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid in-
spection before shipment from the factory,
trouble may occur during operation.
Any problem in the fuel, compression, or igni-
tion systems can cause poor starting and loss
of power. The troubleshooting chart describes
a quick, easy procedure for making checks. If
your machine requires any repair, take it to a
Yamaha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to
properly service your machine. Use only genu-
ine Yamaha parts on your machine. Imitation
parts may look like Yamaha parts, but they are
often inferior. Consequently, they have a short-
er service life and can lead to expensive repair
bills.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-
lot lights from water heaters or furnaces.
Page 392 of 408
Yuki_DATA2:HM00G210_YFM660R-60:YFM350-SPEC-E.frameEL
10-5
Wheel travel:
Front
Rear230 mm
220 mm
Electrical:
Ignition system
Generator system
Battery type/voltage capacityDC-C.D.I.
A.C. Magneto
YTX14-BS/12 V, 12 AH
Headlight type: Krypton bulb
Bulb voltage, wattage
× quantity:
Headlight
Tail/brake light
Indicator/warning lights:
Neutral
Reverse
Coolant temperature12 V, 30 W/30 W × 2
12 V, 5 W/21 W × 1
12 V, 1.7 W × 1
12 V, 1.7 W × 1
12 V, 1.7 W × 1
Fuse:
Main fuse 20 AMODEL YFM660R