Regular Inspection And Adjustments; Maintenance Intervals - Yamaha YZ450F(X) Owner's Service Manual

REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind that such factors as
weather, terrain, geographical location, and individual usage will alter the required maintenance and lubrication intervals. If
you are a doubt as to what intervals to follow in maintaining and lubricating your machine, consult your Yamaha dealer.
Item
ENGINE OIL
Replace
VALVES
Check the valve clearances
Inspect
Replace
VALVE SPRINGS
Inspect
Replace
VALVE LIFTERS
Inspect
Replace
CAMSHAFTS
Inspect
Replace
CAMSHAFT SPROCKETS
Inspect
Replace
PISTON
Inspect
Clean
Replace
PISTON RING
Inspect
Replace
PISTON PIN
Inspect
Replace
CYLINDER HEAD
Inspect and clean
CYLINDER
Inspect and clean
Replace
CLUTCH
Inspect and adjust
Every Every
After
third fifth (or
Every
break-
race (or 500 1,000
in
km)
●
● ●
● ●
3-1
MAINTENANCE INTERVALS
As re-
quired
km)
●
The engine must be cold.
●
Check the valve seats and valve
stems for wear.
●
●
Check the free length and the tilt.
●
●
Check for scratches and wear.
●
Inspect the camshaft surface.
●
Inspect the decompression system.
●
●
Check for wear on the teeth and for
damage.
●
● ●
Inspect crack.
●
Inspect carbon deposits and eliminate
them.
●
●
Check ring end gap.
● ●
●
●
Inspect carbon deposits and eliminate
them.
●
Change gasket.
●
Inspect score marks.
●
Inspect wear.
Inspect housing, friction plate, clutch
plate and spring.
Remarks
3