PERIODIC MAINTENANCE
3-4
EAS2GC1078MAINTENANCE INTERVALS FOR COMPETITION USE
TIP
• 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 re-
quired maintenance and lubrication intervals. If you ar e a doubt as to what intervals to follow in
maintaining and lubricating your ma chine, consult your Yamaha dealer.
• Periodic inspection is essential in making full use of the machine performance. The service life of
the parts varies substantially according to the en vironment in which the machine runs (e.g., rain,
dirt, etc.). Therefore, earlier inspection is required by reference to the list below.
ITEM After
break- in Every
race Every
third (or
500
km) Every
fifth (or
1,000 km) As re-
quired Remarks
ENGINE OIL Replace
VALVES Check the valve
clearances The engine must be cold.
Inspect Check the valve seats and
valve stems for wear.
Replace
VALVE SPRINGS Inspect Check the free length and the
tilt.
Replace
VALVE LIFTERS Inspect Check for scratches and wear.
Replace
CAMSHAFTS Inspect the camshaft surface.
Inspect Inspect the decompression
system.
Replace
CAMSHAFT
SPROCKETS Inspect Check for wear on the teeth
and for damage.
Replace
PISTON Inspect crack.
Inspect Inspect carbon deposits and
eliminate them.
Clean
Replace It is recommended that the pis-
ton pin and ring are also re-
placed at the same time.
PISTON RING
Inspect Check ring end gap.
Replace
