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change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
EAM30334
MAINTENANCE 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 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 substantially 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.
• Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.
No.
Item
1
Engine oil
• Replace.
• Check the valve clearances.
• Check the valve seats and the
2 * Valve
• Replace.
• Check the free length.
3 * Valve spring
• Replace.
• Check for scratches and wear.
4 * Valve lifter
• Replace.
• Inspect the camshaft surface.
• Inspect the decompression sys-
5 * Camshaft
• Replace.
• Check for wear on the teeth and
6 * Camshaft sprocket
• Replace.
• Inspect crack.
• Inspect carbon deposits and elim-
• Clean.
7 * Piston
• Replace.
• Check the ring end gap.
8 * Piston ring
• Replace.
• Inspect.
9 * Piston pin
• Replace.
• Inspect carbon deposits and elim-
10 * Cylinder head
• Change gasket.
• Inspect score marks.
• Inspect wear.
11 * Cylinder
• Replace.
Routine
valve stems for wear.
tem.
for damage.
inate them.
(It is recommended that the piston
pin and ring are also replaced at
the same time.)
inate them.
PERIODIC MAINTENANCE
After
Every
third race
break-in
race
(or 500 km)
3-3
Every
Every
As
fifth race
required
(or 1000 km)
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