Removing The Drive Chain; Checking The Drive Chain - Yamaha YZFR6X(C) 2008 Service Manual

EAS23410

REMOVING THE DRIVE CHAIN

1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that
the rear wheel is elevated.
2. Remove:
• Drive chain
(with the drive chain cutter)
NOTE:
Only cut the drive chain if it or the swingarm is
to be replaced.
EAS23440

CHECKING THE DRIVE CHAIN

1. Measure:
• 15-link section "a" of the drive chain
Out of specification → Replace the drive
chain.
15-link length limit
239.3 mm (9.42 in)
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a. Measure the length "a" between the inner
sides of the pins and the length "b"
between the outer sides of the pins on a
15-link section of the drive chain as shown
in the illustration.
b. Calculate the length "c" of the 15-link sec-
tion of the drive chain using the following
formula.
Drive chain 15-link section length "c" =
(length "a" between pin inner sides + length
"b" between pin outer sides)/2
NOTE:
• When measuring a 15-link section of the
drive chain, make sure that the drive chain is
taut.
• Perform this procedure 2–3 times, at a differ-
ent location each time.
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2. Check:
• Drive chain
Stiffness → Clean and lubricate or
replace.
3. Clean:
• Drive chain
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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.
EC2C01014
CAUTION:
• This vehicle has a drive chain with small
rubber O-rings "1" between the drive
chain side plates. Never use high-pres-
sure 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
deteriorate the O-rings. A coarse brush
can also damage the O-rings. Therefore,
use only kerosene to clean the drive
chain.
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CHAIN DRIVE