BMW F 800 R 2013 Rider's Manual page 88

Check chain sag
8
Make sure the ground is level
and firm and place the motor-
86
cycle on its stand.
Turn the rear wheel until it
reaches the position with the
lowest amount of chain sag.
z
Use a screwdriver to push the
chain up and down and meas-
ure difference a.
Chain deflection
30...40 mm (Motorcycle with
no weight applied, supported
on its side stand)
If measured value is outside per-
mitted tolerance:
Adjust chain sag (
Adjust chain sag
Make sure the ground is level
and firm and place the motor-
cycle on its stand.
86).
Slacken quick-release axle
nut 1.
Slacken locknuts 2 on left and
right.
Use adjusting screws 3 on left
and right to adjust chain sag.
Check chain sag (
Make sure that scale read-
ings 4 are the same on left and
right.
Tighten locknuts 2 on left and
right to the specified tightening
torque.
86).