Adjusting Chain Tension; Checking Chain Wear - BMW HP4 Rider's Manual

Turn the rear wheel until the
9
position with the lowest chain
sag is reached.
140
z
Using a screwdriver, push the
chain in the middle between
the pinion and sprocket and
measure the difference a.
Chain sag
1.6...2 in (40...50 mm) (Motor-
cycle unloaded on side stand)
If the measured value is outside
the approved tolerance:

Adjusting chain tension

( 140).
Adjusting chain tension
Make sure ground is level and
firm and park motorcycle.
Loosen quick-release axle
nut 1.
Loosen lock nuts 3 on left and
right.
Adjust chain tension with ad-
justing screws 2 on left and
right.
Checking chain tension
( 139).
Ensure that the figures 4 indi-
cating the adjustment settings
are identical on left and right.
Tighten locknuts 3 on left and
right to the specified torque.
Locknut of drive-chain
tensioning screw
14 lb/ft (19 Nm)
Tighten quick-release axle
nut 1 to specified torque.
Rear-wheel quick-release
axle in swinging arm
Thread-locking compound:
mechanical
74 lb/ft (100 Nm)

Checking chain wear

Engage 1st gear.
Rotate rear wheel toward front
of vehicle until the chain is ten-
sioned.