Front Fork Tuning Procedure - Suzuki RM250 Owner's Service Manual

FRONT FORK TUNING PROCEDURE

Test ride the motorcycle and find out how the front suspension reacts on various types of surface. According
to the symptom noticed, adjust the front fork to the best setting for rider and race track conditions. To adjust,
attempt changing fork oil capacity and compression/rebound damping following the instructions below.
SYMPTOM
Feels too hard overall
Feels too soft overall and
bottoms
Feels too hard near end of
travel
Feels too soft near end of
travel and bottoms
harshly
Feels too hard in the
beginning of stroke
Feels too soft and unsta-
ble
Bounces
Bounces
NOTE:
When adjusting the front fork oil capacity, make sure that the oil level is within the specified range. Also, the
capacity should be increased or decreased by 1 ml (0.034/0.035 US/Imp oz) [Approx. 1.8 mm (0.07 in)] at a
time.
When adjusting the damping setting, attempt turning the adjuster 1 to 2 click stops at a time for each adjust-
ment.
SECTION
• Jump
• Large bumps
• Series of medium
bumps
• Jump
• Large bump
• When braking
• Jump
• Jump
• Large bump
• Jump
• Large bump
• Series of medium
bumps
• Series of small bumps
• Series of medium
bumps
• Series of small bumps
• Jump
• Large bump
• Series of small bumps
ADJUSTMENT PROCEDURE
1. Adjust both the compression and rebound
damping to a softer setting.
2. Decrease fork oil capacity.
3. Replace the spring with an optional softer one.
1. Adjust the compression damping to a stiffer set-
ting.
2. Increase fork oil capacity.
3. Replace the spring with an optional stiffer one.
1. Decrease fork oil capacity.
1. Adjust the compression damping to a stiffer set-
ting.
2. Increase fork oil capacity.
1. Adjust the compression damping to a softer set-
ting.
1. Adjust the rebound damping to a stiffer setting.
1. Adjust the rebound damping to a stiffer setting.
1. Adjust the rebound damping to a softer setting.
MACHINE TUNING 4-15