10 *
Rotor nut
(flywheel magneto)
• Tighten.
11 *
Kickstarter system
• Check idle gear for damage.
• Replace if necessary.
• Check exhaust pipe and muffler for
carbon deposits.
12 *
Exhaust system
• Clean.
• Check crankshaft for carbon deposits
and damage.
13 *
Crankshaft
• Clean.
14 *
Carburetor
• Check carburetor settings and for
obstructions.
• Adjust and clean.
• Check condition.
15
Spark plug • Clean and regap.
• Replace.
• Check chain slack, alignment and
condition.
16 *
Drive chain
• Adjust and thoroughly lubricate chain
with Yamaha chain and cable lube or
equivalent.
• Replace.
NO. ITEM ROUTINE
After
break-in
Every
race
Every
third race
Every
fifth race
As
required
7 *
Clutch
• Check clutch housing, friction plates,
clutch plates and clutch springs for
wear or damage.
• Adjust.
• Replace.
8 *
Transmission
• Change the transmission oil.
• Check transmission for damage.
• Replace bearings.
9 *
Shift forks, guide
bars, shift cam
• Check all parts for wear and damage.
• Replace if necessary.
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