warning YAMAHA YFM660R 2002 Owners Manual

AN IMPORTANT SAFETY MESSAGE:

READ THIS MANUAL COMPLETELY BE-
FORE OPERATING YOUR MACHINE. MAKE
SURE YOU UNDERSTAND ALL INSTRUC-
TIONS.


PAY CLOSE ATTENTION TO THE WARNING
AND CAUTION LABELS ON THE MACHINE.


THIS ATV, AND ANY OTHER ATV OVER
90cc, SHOULD NOT BE RIDDEN BY ANY-
ONE UNDER 16 YEARS OF AGE. THIS ATV
IS A HIGH PERFORMANCE ATV FOR OFF-
ROAD USE ONLY, FOR SPORT TYPE REC-
REATIONAL AND COMPETITIVE USE BY
EXPERIENCED OPERATORS.
U5LP61.book Page 4 Monday, August 27, 2001 3:49 PM

EBU00801
IMPORTANT MANUAL
INFORMATION
FAILURE TO FOLLOW THE WARNINGS CON-
TAINED IN THIS MANUAL CAN RESULT IN SE-
RIOUS INJURY OR DEATH.
Particularly important information is distinguished
in this manual by the following notations:The Safety Alert Symbol means ATTENTION! BE-
COME ALERT! YOUR SAFETY IS INVOLVED!
WARNING
Failure to follow WARNING instructions could re-sult in severe injury or death
to the machine oper-
ator, a bystander or a person inspecting or
repairing the machine.
U5LP61.book Page 1 Monday, August 27, 2001 3:49 PM

EBU00015
1-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
Brake lever ......................................... 4-19
Brake pedal ........................................ 4-21
Parking brake .................................... 4-23
Shift pedal ......................................... 4-27
Reverse knob “REV”.......................... 4-27
1234
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 .................................... 5-29
5
U5LP61.book Page 1 Monday, August 27, 2001 3:49 PM

1-1
EBU00464
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
U5LP61.book Page 1 Monday, August 27, 2001 3:49 PM

2-17
WARNING


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 ex-
haust pipe/muffler when refueling. Never
refuel while smoking, or while in the vicini-
ty of sparks, open flames, or other sources
of ignition such as the pilot lights of water
heaters and clothes dryers. Gasoline can
catch fire and you could be burned.


When transporting the machine in another
vehicle, be sure it is kept upright and that
the fuel cock is in the “OFF” position. Oth-
erwise, fuel may leak out of the carburetor
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 gaso-
line spills on your skin, wash with soap
and water. If gasoline spills on your cloth-
ing, change your clothes.
U5LP61.book Page 17 Monday, August 27, 2001 3:49 PM

2-19
WARNING
Always operate your machine in an area with
adequate ventilation. Never start or run the en-
gine in a closed area. Exhaust fumes are poi-
sonous and may cause loss of consciousness
and death within a short time.
U5LP61.book Page 19 Monday, August 27, 2001 3:49 PM

4-3 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 transmis-
sion is in reverse.
EBU00603
Neutral indicator light “N”
This indicator light comes on when the transmis-
sion is in neutral.
U5LP61.book Page 3 Monday, August 27, 2001 3:49 PM

4-5 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 “”
EBU00713
Coolant temperature warning light “”
When the coolant temperature reaches a specified
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.
U5LP61.book Page 5 Monday, August 27, 2001 3:49 PM

4-7
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.
U5LP61.book Page 7 Monday, August 27, 2001 3:49 PM

4-15 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
EBU00063
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 en-
gine will return to an idle any time the hand is re-
moved 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.
WARNING
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the
operation of the throttle lever before you start
the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
U5LP61.book Page 15 Monday, August 27, 2001 3:49 PM