Adjusting The Front Fork - APRILIA RST mille Futura 2001 Service Manual

SCHEDULED MAINTENANCE AND TUNING OPERATIONS

2.29.2 ADJUSTING THE FRONT FORK

The front fork is adjusted at the factory to suit most riding
conditions for most riders at low and high speeds, with light
or heavy vehicle loads. However, it is possible to customize
the fork setting to accommodate the full range of operating
conditions that the vehicle is intended to be used for.
NOTE
Choose the type of adjustment desired, based
on the information in the table, before touching the
adjusters.
SETTINGS:
Standard setting:
for normal loads (for example, rider and luggage).
Medium setting:
for heavy loads (for example passenger, rider and luggage).
Rigid setting:
for competitive riding.
Full-load setting:
for touring.
WARNING
Do not force the adjuster screw (1) to turn beyond the
end of its stroke in both directions, to avoid damaging
the vehicle.
Ensure that the spring preload and hydraulic damping
is the same for both sides: the vehicle will become less
stable if there are different settings on the two sides.
When the spring preload is increased, it is necessary to
also increase the hydraulic damping, to avoid
harshness while riding.
WARNING
When adjusting, always start from the most rigid
setting [screw (1) turned fully clockwise].
Use the notches provided on the adjuster screw (1)
as reference marks for adjusting of hydraulic
damping on extension.
Gradually rotate the adjuster screw (1) 1/ 8 turn at a
time.
Test the vehicle repeatedly on the road until you have
determined the optimum setting.
WARNING
There is no adjustment available for the protrusion of
fork tubes (B). It is strictly prohibited to change the
riding position by adjusting this protrusion.
The standard setting has the fork tube (B) protruding
as far as the first notch.
TABLE
Front suspension
Hydraulic adjustment
in extension,
screw (1)
Spring preload, nut
(2) [notch reference
mark (A)]
(*) = clockwise
(**) = counter-clockwise
2
- 48 -
00
Standard setting
from fully closed (*) from fully closed (*)
open (**) 1.25 turns open (**) 1.5 turns
th
to the 6 notch to the 7
Soft setting Rigid setting
from fully closed (*)
open (**) 1 turn
th
notch to the 5
RST mille
1
2
Full-load
adjustments
from fully closed (*)
open (**) 1.25 turns
th th
notch to the 7
Release 00/2002 - 03
USA
notch