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:

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 ...

Stick Coil Removal
Remove the air cleaner housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter). Disconnect the stick coil connectors [A]. Pull out the stick coils [B] upward. First, turn the stick coil by 90 degrees, and then pull it out by twisting the coil head to the left and righ ...

Cylinder Compression Measurement
NOTE Use the battery which is fully charged. Warm up the engine thoroughly. Stop the engine. Remove the spark plugs (see Spark Plug Replacement in the Periodic Maintenance chapter). Attach the compression gauge [A] and adapter [B] firmly into the spark plug hole. Using the startermo ...