BMW HP4 Rider's Manual page 51

the motorcycle. Increase spring
preload when the vehicle is heav-
ily loaded and reduce spring
preload accordingly when the
vehicle is lightly loaded.
Adjusting spring preload
on front wheel
Make sure ground is level and
firm and park motorcycle.
Make sure there is no load on
the motorcycle, removing any
cargo or luggage.
Start engine and allow to warm
up in idle.
Hold motorcycle in a verti-
cal position and measure dis-
tance d between lower edge 1
of slider tube and front axle 2.
Load motorcycle with driver.
With the assistance of a helper,
measure distance d between
points 1 and 2 again and cal-
culate difference (spring deflec-
tion) between the measured
values.
Adjustment of spring
preload dependent on
loading
Compressing front wheel
Adjustment of spring
preload dependent on
loading
1.3...1.8 in (34...45 mm)
(With rider 187 lbs (85 kg))
To decrease spring deflection
(increase spring preload), turn
adjusting screw 3 with tool of
onboard tool kit in direction A.
To increase spring deflection
(decrease spring preload), turn
adjusting screw 3 with tool of
onboard tool kit in direction B.
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