Removing The Drive Chain; Checking The Drive Chain - Yamaha Tracer MT09TRAH 2017 Service Manual

EAS30229

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.
TIP
Place the vehicle on the centerstand so that the
rear wheel is elevated.
2. Straighten the drive sprocket nut rib "a".
a
3. Remove:
• Drive chain
ECA17410
NOTICE
Be sure to put on safety goggles when work-
ing.
TIP
Cut the drive chain with the drive chain cut & riv-
et tool.
Drive chain cut & rivet tool
90890-01550
Drive chain cut & rivet tool
YM-01550
EAS30230

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 "b" between the inner
sides of the pins and the length "c" 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 "a" of the 15-link section
of the drive chain using the following formula.
Drive chain 15-link section length "a" =
(length "b" between pin inner sides + length
"c" between pin outer sides)/2
TIP
• 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 different
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.
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CHAIN DRIVE