Rear Shock Absorber
Using the jack under the frame, raise the rear wheel off
Special Tools - Jack: 57001-1238
Jack Attachment: 57001-1608
Using the hook wrenches [A] (R42, 57001-1103 × 2),
loosen the locknut [B].
The hook wrench (R42, 57001-1103) is in the hook
wrench R37.5, R42: 57001-1101.
Special Tools - Hook Wrench R37.5, R42: 57001-1101 × 2
Using the hook wrench [A] (R42, 57001-1103), turn the
adjusting nut [B] as required. Turning the adjusting nut
downward marks the spring action harder and upward
Special Tool - Hook Wrench R37.5, R42: 57001-1101
Spring Preload Adjustment
(Lower surface of the adjusting nut from the center of
the upper mounting hole [A])
128.5 mm (5.059 in.) (KX450FC)
(EUR, BR) 127.5 mm (5.020 in.)
127.5 mm (5.020 in.) (KX450FD ∼)
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 removed parts (see appropriate chapters).
Rear Shock Absorber 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
If the free length falls below the service limit, replace the
255 mm (10.0 in.)
250 mm (9.84 in.)