Periodic Maintenance Procedures
Stretch the chain taut by hanging a 98 N (10 kg, 20 lb)
weight [A] on the chain.
Measure the length of 20 links [B] on the straight part [C] of
the chain from the pin center of the 1st pin to the pin center
of the 21st pin. Since the chain may wear unevenly, take
measurements at several places.
Chain 20-link Length
317.5 ∼ 318.2 mm (12.50 ∼ 12.53 in.)
323 mm (12.7 in.)
If any measurements exceed the service limit, replace the
chain. Also, replace the front and rear sprockets when the
drive chain is replaced.
A chain that breaks or jumps off the sprockets
could snag on the engine sprocket or lock the
rear wheel, severely damaging the motorcycle and
causing it to go out of control. Inspect the chain for
damage and proper adjustment before each ride.
If chain wear exceeds the service limit, replace it
with the standard chain.
Drive Chain Slack Inspection
Using the jack, raise the rear wheel until the rear shock
absorber stretched fully.
Special Tools - Jack: 57001-1238
Jack Attachment: 57001-1608
Check the wheel alignment (see Wheel Alignment Inspec-
tion in the Final Drive chapter), and adjust it if necessary
(see Wheel Alignment Adjustment in the Final Drive chap-
Clean the drive chain if it is dirty, and lubricate it if it
Rotate the rear wheel to find the position where the chain
is tightest (because it wears unevenly).
Measure the space (chain slack) [A] between the bottom
of the chain and the swingarm as shown in the figure.
52 ∼ 58 mm (2.0 ∼ 2.3 in.)
If the drive chain slack exceeds the standard, adjust it.
PERIODIC MAINTENANCE 2-35