Triumph Speed Triple R, Owner'S Handbook Manual

Page: 103 / 148

Maintenance and Adjustment
103
Chain and Sprocket Wear Inspection
1. Measure across 20 links
2. Weight
Stretch the chain taut by hanging a
20 - 40 lb (10 - 20 kg) weight on the
chain.
Measure the length of 20 links on the
straight part of the chain from pin
center of the 1
st
pin to the pin center of
the 21
st
pin. Since the chain may wear
unevenly, take measurements in several
places.
If the length exceeds the maximum
service limit of 12.6 in (320 mm), the
chain must be replaced.
Rotate the rear wheel and inspect the
drive chain for damaged rollers, and
loose pins and links.
Also inspect the sprockets for unevenly
or excessively worn or damaged teeth.
If there is any irregularity, have the drive
chain and/or the sprockets replaced by
an authorized Triumph dealer.
2
1
Warning
Never neglect chain maintenance and
always have chains installed by an
authorized Triumph dealer.
Use a genuine Triumph supplied chain
as specified in the Triumph parts
catalog.
The use of non-approved chains may
result in a broken chain or may cause
the chain to jump off the sprockets
leading to loss of motorcycle control
or an accident.
Caution
If the sprockets are found to be worn,
always replace the sprockets and
drive chain together. Replacing worn
sprockets without also replacing the
chain will lead to premature wear of
the new sprockets.
WORN TOOTH
(ENGINE SPROCKET)
WORN TOOTH
(REAR SPROCKET)
(Sprocket wear exaggerated
for illustrative purposes)
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