2008 YAMAHA WR 450F sensor

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Page 106 of 224

YAMAHA WR 450F 2008  Owners Manual 5-10
CARBURETOR
• Apply the fluorochemical grease on 
the bearings.
• Fit the projection "a" on the throttle 
shaft assembly into the slot "b" in 
the throttle position sensor.
• Make sure the s

Page 108 of 224

YAMAHA WR 450F 2008  Owners Manual 5-12
CARBURETOR
7. Install:
• Throttle cable cover "1"
• Bolt (throttle cable cover) "2"
8. Install:
• Throttle position sensor lead cou-
pler "1"
• Clamp "2"
Refer to "CABLE ROUTING DIA-
GRAM

Page 162 of 224

YAMAHA WR 450F 2008  Owners Manual 6-1
FRONT WHEEL AND REAR WHEEL
CHASSIS
FRONT WHEEL AND REAR WHEEL
REMOVING THE FRONT WHEEL
Order Part name Qty Remarks
Hold the machine by placing the suitable stand 
under the engine.Refer to "HANDL

Page 165 of 224

YAMAHA WR 450F 2008  Owners Manual 6-4
FRONT WHEEL AND REAR WHEEL
2. Install:
• Brake disc "1"
• Bolt (brake disc) "2" 
Tighten the bolts in stage, using a 
crisscross pattern.
3. Install:
•Collar "1"
Apply the lithium soap base

Page 183 of 224

YAMAHA WR 450F 2008  Owners Manual 6-22
FRONT FORK
3. Adjust:
• Front fork top end "a"
4. Tighten:
• Pinch bolt (upper bracket) "1"
• Pinch bolt (lower bracket) "2"
Tighten the lower bracket to speci-
fied torque. If torqued too

Page 191 of 224

YAMAHA WR 450F 2008  Owners Manual 6-30
STEERING
6. Install:
• Washer "1"
7. Install:
• Front fork "1"
• Upper bracket "2"
• Main switch "3"
• Front brake hose guide bracket 
"4"
• Temporarily tighten the pinch bolts 
(lowe

Page 202 of 224

YAMAHA WR 450F 2008  Owners Manual 7-1
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
ELECTRICAL
ELECTRICAL 
COMPONENTS AND 
WIRING DIAGRAM
ELECTRICAL COMPONENTS
1. Headlight
2. Multi-function display
3. Engine stop switch
4. Clutch switch
5

Page 203 of 224

YAMAHA WR 450F 2008  Owners Manual 7-2
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
WIRING DIAGRAM
1. Headlight
2. Multi-function display
3. Engine stop switch
4. Clutch switch
5. Diode
6. Starter relay diode
7. Throttle position sensor
8.
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