Operation Manual

3 - 1
INSP
ADJ
MAINTENANCE INTERVALS
EC300000
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
After
break-in
Every
race
Every
third
(or
500 km)
Every
fifth
(or
1,000 km)
As re-
quired
Remarks
ENGINE OIL
Replace
OIL FILTER
Clean
●●
VALVES
Check the valve clearances.
Inspect
Replace
The engine must be cold.
Check the valve seats
and valve stems for wear.
VALVE SPRINGS
Inspect
Replace
Check the free length and
the tilt.
VALVE LIFTERS
Inspect
Replace
Check for scratches and
wear.
CAMSHAFTS
Inspect
Replace
Inspect the camshaft sur-
face.
CAMSHAFT SPROCKETS
Inspect
Replace
Check for wear on the
teeth and for damage.
PISTON
Inspect
Clean
Replace
Inspect crack
Remove carbon
PISTON RING
Inspect
Replace
Check ring end gap
PISTON PIN
Inspect
Replace
CYLINDER HEAD
Inspect and clean
Remove carbon
Change gasket
CYLINDER
Inspect and clean
Replace
Inspect score marks
Inspect wear
CLUTCH
Inspect and adjust
Replace
Inspect housing, friction
plate, clutch plate and
spring
TRANSMISSION
Inspect
Replace bearing