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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.
• Periodic inspection is essential in making full use of the machine performance. The service life of the parts varies sub-
stantially according to the environment in which the machine runs (e.g., rain, dirt, etc.). Therefore, earlier inspection is
required by reference to the list below.
Item
ENGINE OIL
Replace
Inspect
OIL FILTER ELEMENT, OIL
STRAINER
Clean
VALVES
Check the valve clearances
Inspect
Replace
VALVE SPRINGS
Inspect
Replace
VALVE LIFTERS
Inspect
Replace
CAMSHAFTS
Inspect
Replace
TIMING CHAIN SPROCKETS,
TIMING CHAIN
Inspect
Replace
PISTON
Inspect
Clean
Replace
PISTON RING
Inspect
Replace
Every
Every
Every
third
After
race
(about
(about
break-
(about
in
2.5
7.5
hours)
hours)
hours)
●
●
●
●
3-1
MAINTENANCE INTERVALS
fifth
As re-
quired
12.5
●
●
●
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.
It is recommended that the piston pin
●
and ring are also replaced at the same
time.
Check ring end gap.
●
●
●
Remarks
3
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