Kawasaki Ninja Service Manual: Spring Preload Adjustment

• Remove the rear shock absorber from the frame (see Rear Shock Absorber Removal).
• Loosen the locknut and turn out the adjusting nut to free the spring.

Special Tools - Hook Wrench T=3.2 R37: 57001-1539 Hook Wrench R=35: 57001-1580

• To adjust the spring preload, turn in the adjusting nut [A] to the desired position and tighten the locknut [B].

  Spring Length [C]

Spring Preload Setting Standard: Spring length 162 mm (6.38 in.) Usable Range: Spring length 157
170 mm (6.18
6.69 in.)

• Remove the bolts [A] and rear footpeg bracket [B] (both sides) for easily adjustment.

• To adjust the spring preload, turn in the adjusting nut to the desired position and tighten the locknut by using hook wrenches [A] with the rear shock absorber attached the frame.

Special Tools - Hook Wrench T=3.2 R37: 57001-1539 Hook Wrench R=35: 57001-1580

If the spring action feels too soft or too stiff, adjust it.

Spring Adjustment