Rear Shock Absorber
Using the hook wrenches, loosen the locknut [A] on the
rear shock absorber.
Special Tools - Hook Wrench R37.5, R42 [B]: 57001-1101
Hook Wrench [C]: 57001-1641
Using the stem nut wrench [A], turn the adjusting nut [B]
as required. Turning the adjusting nut downward marks
the spring action harder and upward softer.
Special Tool - Steering Stem Nut Wrench: 57001-1100
Spring Preload Adjustment
(Adjusting nut position at the lower surface [A] from
the center of the mounting hole)
132.5 mm (5.216 in.) (KX450E9F)
129.5mm (5.098 in.)
126.5 ∼ 139.5 mm (4.980 ∼ 5.492 in.)
126.5 ∼ 138.5 mm (4.980 ∼ 5.453 in.)
Tighten the locknut securely.
After adjusting, move the spring up and down to make
sure that the spring is seated.
Install the parts removed (see appropriate chapters).
Spring Tension Inspection
Since the spring becomes shorter as it weakens, check
its free length [A] to determine its condition.
Shock Absorber Spring Free Length
Rear Shock Absorber Removal
Rear Frame with Air Cleaner Housing (see Rear Frame
Removal in the Frame chapter)
Using the jack under the frame, raise the rear wheel off
Special Tool - Jack: 57001-1238
255 mm (10.0 in.)
250 mm (9.84 in.)