Perio
d
ic maintenance an
d
a
d
justment
7-3
7
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
Ever
y
race
Ever
y
thir
d race
Ever
y
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.
UB4B11E0.book Page 3 Tuesday, February 19, 2019 1:10 PM
