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EAM20157
MAINTENANCE INTERVALS
EAM30369
MAINTENANCE INTERVALS
ECA25871
NOTICE
• After a break-in or before each race, always check the points shown in "TORQUE-CHECK
POINTS" for tightening torques and retighten them.
• Periodic inspection is essential in making full use of the machine performance. The life of
parts varies significantly 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.
TIP
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools,
data and technical skills.
No.
Item
• Check piston for carbon deposits
1 * Piston
• Clean.
• Replace.
• Check piston ring end gap and
2 * Piston rings
• Replace.
• Check piston pin and small end
3 * Piston pin and small
end bearing
• Replace.
• Check cylinder head for carbon
• Clean.
• Check cylinder head gasket for
4 * Cylinder head
• Tighten cylinder head nuts if nec-
• Replace cylinder head gasket.
• Check cylinder for score marks or
5 * Cylinder
• Clean.
• Replace.
• Check YPVS for carbon deposits
6 * YPVS
• Clean.
• Check clutch housing, friction
7 * Clutch
• Adjust.
• Replace.
• Change the transmission oil.
8 * Transmission
• Check transmission for damage.
• Replace bearings.
• Check all parts for wear and dam-
9 * Shift forks, guide
bars, shift cam
• Replace if necessary.
Routine
and cracks or damage.
rings for damage.
bearing for damage.
deposits.
damage.
essary.
wear.
and cracks or damage.
plates, clutch plates and clutch
springs for wear or damage.
age.
MAINTENANCE INTERVALS
Every
After
race
third race
break-in
(about 2.5
(about 7.5
hours)
3-1
Every
Every
fifth race
As
(about 12.5
required
hours)
hours)
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