BMW HP4 Rider's Manual page 52

torcycle. Increase spring pre-
4
load when the vehicle is heavily
loaded and reduce spring preload
50
accordingly when the vehicle is
lightly loaded.
Adjusting spring preload
for front wheel
Make sure the ground is level
and firm and place the motor-
cycle on its stand.
Make sure there is no load
z
on the motorcycle; remove all
items of luggage, if carried.
Start the engine and leave it
running in neutral.
Hold the motorcycle upright
and measure distance d from
bottom edge 1 of the slider
tube to front axle 2.
Apply the rider's weight to the
motorcycle.
With the assistance of a
second person, measure
distance d between points 1
and 2 again and calculate the
difference (negative spring
displacement) between the two
readings.
Load-dependent adjust-
ment of spring preload
Negative spring displace-
ment of front wheel
34...45 mm (With rider
85 kg)
To reduce negative spring dis-
placement (increase spring pre-
load, in other words), use the
tool from the on-board toolkit
to turn adjusting screws 3 in
direction A.
To increase negative spring
displacement (reduce spring