Checking The Drive Sprocket; Checking The Rear Wheel Sprocket; Checking The Rear Wheel Drive Hub - Yamaha MT-09 2021 Service Manual

3. Clean:
• Drive chain
a. Wipe the drive chain with a clean cloth.
b. Put the drive chain in kerosene and remove
any remaining dirt.
c. Remove the drive chain from the kerosene
and completely dry it.
ECA19090
NOTICE
• This vehicle has a drive chain with small
rubber O-rings "1" between the drive chain
side plates. Never use high-pressure water
or air, steam, gasoline, certain solvents
(e.g., benzine), or a coarse brush to clean
the drive chain. High-pressure methods
could force dirt or water into the drive
chain's internals, and solvents will deterio-
rate the O-rings. A coarse brush can also
damage the O-rings. Therefore, use only
kerosene to clean the drive chain.
• Do not soak the drive chain in kerosene for
more than ten minutes, otherwise the O-
rings can be damaged.
G088940
G088941
4. Check:
• O-ring "1"
Damage → Replace the drive chain.
• Drive chain roller "2"
Damage/wear → Replace the drive chain.
• Drive chain side plate "3"
Damage/wear/cracks → Replace the drive
chain.
G088943
5. Lubricate:
• Drive chain
Recommended lubricant
Chain lubricant suitable for
O-ring chains
EAS30231

CHECKING THE DRIVE SPROCKET

1. Check:
• Drive sprocket
More than 1/4 tooth "a" wear → Replace the
drive sprocket, the rear wheel sprocket and
the drive chain as a set.
Bent teeth → Replace the drive sprocket, the
rear wheel sprocket and the drive chain as a
set.
G088904
b. Correct
1. Drive chain roller
2. Drive sprocket
EAS30232

CHECKING THE REAR WHEEL SPROCKET

Refer to "CHECKING AND REPLACING THE
REAR WHEEL SPROCKET" on page 4-21.
EAS30233

CHECKING THE REAR WHEEL DRIVE HUB

Refer to "CHECKING THE REAR WHEEL
DRIVE HUB" on page 4-21.
4-88
CHAIN DRIVE