Checking Chain Wear - BMW F 800 GS 2011 Rider's Manual

Clean drive chain with suitable
cleaning agent, dry and apply
chain lubricant.
Wipe off excess lubricant.
Checking chain sag
Make sure ground is level and
firm and park motorcycle.
Turn the rear wheel until the
position with the lowest chain
sag is reached.
Press chain upward and down-
ward using a screwdriver and
measure difference A.
Chain sag
1.4...1.8 in (35...45 mm)
(Motorcycle unloaded on
side stand)
If the measured value is outside
the permissible tolerance:
Adjust chain sag (
Adjusting chain sag
Make sure ground is level and
firm and park motorcycle.
Loosen quick-release axle
nut 1.
Loosen lock nuts 2 on left and
right.
Adjust chain sag with adjusting
screws 3 on left and right.
Checking chain sag (
Make sure that the same scale
value 4 is set on the left and
right.
Tighten locknuts 2 on left and
93).
right with appropriate torque.
Locknut of drive-chain
tensioning screw
14 lb/ft (19 Nm)
Tighten quick-release axle
nut 1 to appropriate torque.
Rear-wheel quick-release
axle in swinging arm
74 lb/ft (100 Nm)

Checking chain wear

Make sure ground is level and
firm and park motorcycle.
Engage 1st gear.
8
93
93).
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