Suzuki drz 400E Service Manual page 168

Move the rod and drain the oil completely into a drain pan.
Push the valve core again to equalize atmospheric pressure.
Fill a drain pan with the specified rear suspension oil.
Place the rear shock absorber into the drain pan so that the
drain hole is submerged in the oil, and then fill the rear shock
absorber with the oil by stroking the rod.
99000-99001-S25:
SUZUKI REAR SUSPENSION OIL SS-25
Oil capacity:
Approximately 380 ml (12.8 US oz, 13.4 lmp oz)
When fitting the orifice in the compression adjuster hole, face
the conical side to the valve side.
Tighten the compression adjuster assembly to the specified
torque.
Replace the remove O-rings with new ones.
Compression adjuster assembly:
Fill the rear shock absorber unit with nitrogen gas.
Rear shock absorber gas pressure:
Tighten the gas valve cap.
Use of flammable gas for pressuring the rear shock
absorber unit can be hazardous. Flammable gas such
as gas welding oxygen can create a fire hazard.
Use nitrogen gas. If nitrogen gas is not available,
compressed air free from water can be substituted.
Applying too much pressure to the rear shock ab-
sorber unit may rupture the rear shock absorber unit.
Be sure to fill the rear shock absorber unit to the
specified pressured.
30 N·m (3.0 kgf-m, 21.5 lb-ft)
2
900 kPa (9.0 kgf/cm , 128 psi)
CHASSIS 6-37