Kawasaki J300 - Owner's Manual > Front Fork


After riding on the normal road, the unpaved road and in the rainy weather, clean off any dirt (grit, mud or insect etc.) that stuck to inner tube before it hardens. If the motorcycle keeps running with the dirt stuck to the inner tube, the oil seal will be damaged and it causes the oil leak.

Rear Shock Absorber

Spring Preload Adjustment

The spring preload adjuster on the rear shock absorber has 5 positions.


3rd position


Improper shock absorber adjustment can cause poor handling and loss of stability, which could lead to an accident. Always adjust the shock absorbers on the left and right side to the same setting.


  1. Spring Preload Adjuster
  2. Wrench


  1. Mark
  2. Position Number


Always adjust the spring preload adjuster in sequence (1 → 2 → 3 → 4 → 5 or 5 → 4 → 3 → 2 → 1).

Attempting to adjust directly from 1 to 5 or 5 to 1 may damage the shock absorber.

See also:

 Kawasaki J300 - Owner's Manual > Suspension System

 Kawasaki J300 - Owner's Manual > Setting Table

Rear Shock Absorber Spring Preload Setting Wheels