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BMW HP4 - Page 55

BMW HP4
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Load-dependent adjust-
ment of spring preload
Negative spring displacement
of front wheel
5...10 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 screw 3 in dir-
ection A.
To increase negative spring
displacement (reduce spring
preload, in other words), use
the tool from the on-board
toolkit to turn adjusting screw 3
in direction B.
Adjusting spring preload
for rear wheel
Make sure the ground is level
and firm and place the motor-
cycle on its stand.
Make sure there is no load
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 number-
plate carrier to screw 2 of the
chain guard.
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 displacement
of rear wheel
8...12 mm (With rider 85 kg)
4
53
z
Operation

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