2004-2009 Suzuki LT-Z250 Service Manual, Page 212Get this manual
CHASSIS SUSPENSION SETTING SPRING PRE-LOAD ADJUSTMENT The rear suspension spring pre-load is adjustableThis adjustment is
Release gas pressure before disposingGAS PRESSURE RELEASE Remove the valve capPress the valve with screwdriver to bleed out
the nitrogen gas(Releasing high pressure gas from the rear shock absorber unit can be hazardousNever perform any servicing
until the nitrogen gas pressure has been released from the rear shock absorber unit When releasing the gas pressure, place
reg over the gas valve and use the tip of screwdriver to press the valveDo not use your finger to depress the gas valve,
and be sure to direct the valve away from your face and body Be sure to always wear eye protection when performing this procedure.