Page 14 of 444

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 ............................ 4-7
Throttle lever .................................... 4-11
Speed limiter .................................... 4-13
Clutch lever ...................................... 4-15
Brake lever ....................................... 4-17Brake pedal ...................................... 4-17
Parking brake lever .......................... 4-19
Shift pedal ........................................ 4-21
Fuel tank cap .................................... 4-21
Fuel cock .......................................... 4-23
Starter (choke) ................................... 4-25
Seat .................................................. 4-27
Front shock absorber adjustment ..... 4-29
Rear shock absorber adjustment ..... 4-39
PRE-OPERATION CHECKS ................ 5-1
Front and rear brakes ......................... 5-7
Fuel .................................................. 5-13
Engine oil .......................................... 5-17
Coolant ............................................. 5-19
Chain ................................................ 5-21
Throttle lever .................................... 5-21
Tires ................................................. 5-23
How to measure tire pressure .......... 5-27
Tire wear limit ................................... 5-29
Fittings and fasteners ....................... 5-29
EBU00150
CONTENTS
1
2
3
4
5
5TG-9-62 1-3 5/13/05 10:06 AM Page 12
Page 62 of 444

4-3
1. Neutral indicator light “N”
2. Coolant temperature warning light “ ”
1. Témoin de point mort “N”
2. Témoin d’avvertissement de la température du liquide de
refroidissement “ ”
1. Luz de control de punto muerto “N”
2. Luz de aviso de la temperatura del refrigerante “ ”
EBU08020
Indicator and warning lights
EBU06030
Neutral indicator light “N”
This indicator light comes on when the transmis-
sion is in neutral.
EBU13850
Coolant temperature warning light “ ”
When the coolant temperature reaches a speci-
fied 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 electrical circuit of the warning light can be
checked according to the following procedures.
1. Set the engine stop switch to “RUN” and
turn the key to “ON”.
2. Shift the transmission into the neutral posi-
tion or pull the clutch lever.
5TG-9-62 4 5/12/05 5:18 PM Page 4-3
Page 64 of 444
4-5
3. Push the start switch. If the warning light
does not come on while the start switch is
pushed, have a Yamaha dealer check the
electrical circuit.
cC
8The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.
8Restart after making sure that the light is
off. Continuous use while the light is on
may cause damage to the engine.
5TG-9-62 4 5/12/05 5:18 PM Page 4-5
Page 427 of 444
10-6
Model YFZ450V
Bulb voltage, wattage ×quantity:
Headlight 12V, 30W/30W ×2
Tail/brake light LED
Indicator/warning light
Neutral 12V, 1.7W ×1
Coolant temperature 12V, 1.7W ×1
Fuses:
Main 15.0 A
5TG-9-62 9-11 5/12/05 6:14 PM Page 10-6