Periodic maintenance an d a djustment
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 depositsand damage.13 *Crankshaft
Clean.
14 *
Carburetor Check carburetor settings and for
obstructions.
Adjust and clean. Check condition.
15Spark 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
Everyrace
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.
UB4B81E0.book Page 3 Friday, March 1, 2019 2:54 PM
