Yamaha 2008 WR450F, Owner'S Service Manual

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3-2
MAINTENANCE INTERVALS
CLUTCH
Inspect and adjust
● ●
Inspect housing, friction plate, clutch
plate and spring.
Replace
●
TRANSMISSION
Inspect
●
Replace bearing
●
SHIFT FORK, SHIFT CAM,
GUIDE BAR
Inspect
●
Inspect wear.
ROTOR NUT
Retighten
● ●
MUFFLER
Inspect and retighten
● ●
Clean
●
Replace
●
CRANK
Inspect and clean
● ●
CARBURETOR
Inspect, adjust and clean
● ●
AIR INDUCTION SYSTEM
Inspect and clean
● ● ● ●
SPARK PLUG
Inspect and clean
● ●
Replace
●
DRIVE CHAIN Use chain lube.
Lubricate, slack, alignment
● ●
Chain slack: 48–58 mm (1.9–2.3 in)
Replace
●
COOLING SYSTEM
Check coolant level and leakage
● ●
Check radiator cap operation
●
Replace coolant
●
Every two years
Inspect hoses
●
OUTSIDE NUTS AND BOLTS
Retighten
● ●
Refer to "STARTING AND BREAK-
IN" section in the CHAPTER 1.
AIR FILTER
Clean and lubricate
● ●
Use foam air-filter oil or equivalent oil.
Replace
●
OIL FILTER
Replace
● ●
FRAME
Clean and inspect
● ●
Item
After
break-
in
Every
race
Every
third
(or 500
km)
Every
fifth (or
1,000
km)
As re-
quired
Remarks
3