BMW G 650 GS Rider's Manual page 76

Lubricate drive chain at least
8
every 620 mls (1,000 km). Af-
ter driving though water or dust
74
and dirt, carry out lubricate ear-
lier accordingly.
Switch off ignition and engage
Neutral.
Clean drive chain with suitable
cleaning agent, dry and apply
chain lubricant.
Wipe off excess lubricant.
Checking chain sag
z 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
center stand)
If the measured value is outside
the permissible tolerance:
Adjusting chain sag (
Adjusting chain sag
Make sure ground is level and
firm and park motorcycle.
Loosen quick-release axle
nut 1, while holding on left side
if necessary.
Adjust chain sag with adjusting
screws 2 on left and right.
Checking chain sag (
Make sure that the same scale
value 3 is set on the left and
right.
Tighten quick-release axle
nut 1 with specified torque,
while holding on left side if
74).
necessary.
74).