Periodic maintenance an d a djustment
7-3
7
9 *Rotor nut
(flywheel magneto) Tighten.√√
10 *
Kickstarter system Check idle gear for damage.√ Replace if necessary.
Check exhaust pipe and muffler for
carbon deposits.
√√
11 *Exhaust system
Clean.
√ Check crankshaft for carbon deposits and damage.12 *Crankshaft
Clean.
√ √
√
√
13 *
Carburetor Check carburetor settings and for
obstructions.√√
Adjust and clean.√√ Check condition.√√
14Spark plug Clean and regap.
Replace.
√ Check chain slack, alignment and
condition.
15 *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
6 *Clutch Check clutch housing, friction plates,
clutch plates and clutch springs for
wear or damage.√√
Adjust.
Replace.
√
7 *
Transmission Change the transmission oil.√√ Check transmission for damage.√ Replace bearings.√
8 *Shift forks, guide
bars, shift cam Check all parts for wear and damage.√ Replace if necessary.
U1SN84E0.book Page 3 Wednesday, June 10, 2015 10:24 AM
Periodic maintenance an d a djustment
7-22
7
2. To tighten the drive chain, turn the
drive chain slack adjusting bolt on
each side of the swingarm in di-
rection (a). To loosen the drive
chain, turn the adjusting bolt on
each side of the swingarm in di-
rection (b), and then push the rear
wheel forward. NOTICE: Improp-
er drive chain slack will over-
loa d the en gine as well as other
vital parts of the motorcycle an d
can lead to chain slippa ge or
b reakag e. To prevent this from
occurrin g, keep the d rive chain
slack within the specified limits.
[ECA10572]
TIP
Using the alignment marks on each
drive chain puller, make sure that both
drive chain pullers are in the same po-
sition for proper wheel alignment.
3. Tighten both locknuts and the axle
nut to the specified torques. 4. Make sure that the drive chain
pullers are in the same position,
the drive chain slack is correct,
and the drive chain moves
smoothly.
1. Axle nut
2. Drive chain puller
3. Locknut
4. Drive chain slack adjusting bolt
5. Alignment marks
5 4
32
Ti
ghtenin g torques:
Locknut: 14 Nm (1.4 m·kgf, 10 ft·lbf)
Axle nut:
90 Nm (9.0 m·kgf, 65 ft·lbf)
U1SN84E0.book Page 22 Wednesday, June 10, 2015 10:24 AM
