Kawasaki Ninja Service Manual: Spring Preload Adjustment

Kawasaki Ninja Service Manual / Suspension / Rear Shock Absorber / 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.)

Spring Preload Adjustment

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

Spring Preload 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 Preload Adjustment

Spring Adjustment

Compression Damping Force Adjustment

There are two adjustments you can make to the compression damping force. High Speed Compression Damping Adjuster [A] Low Speed Compression Damping Adjuster [B] To adjust the high speed co ...

Rear Shock Absorber Removal

Remove: Lower Fairings (see Lower Fairing Removal in the Frame chapter) Fuel Tank (see Fuel Tank Removal in the Fuel System chapter) Bolts [A] (Both Sides) Foot Guard [B] (Both Sides) ...

Other materials:

Muffler Body Installation
Replace the muffler body gasket [A] with a new one. Install the muffler body gasket to the premuffler chamber [B] until it is bottomed so that the chamfer side faces premuffler chamber. Install the muffler body clamp [C] as shown in the figure. Insert the projection [D] into the slot [ ...

Oil Pressure Relief Valve Inspection
Remove the oil pressure relief valve (see Oil Pressure Relief Valve Removal). Check to see if the valve [A] slides smoothly when pushing it in with a wooden or other soft rod, and see if it comes back to its seat by spring [B] pressure. NOTE Inspect the valve in its assembled stat ...

Fuel Tank and Cap Inspection
Visually inspect the gasket [A] on the tank cap for any damage. Replace the gasket if it is damaged. Check to see if the water drain pipe [B] and fuel breather pipe [C] in the tank are not clogged. Check the tank cap breather also. If they are clogged, remove the tank and drain it ...