1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 270Get this manual
ENGINES Engine Service, 350Ll400L Cont21Heat areas (A) and (8) with small propane torch for approximately one to two minutes, no closer than 1" (2.5 cm) from case areasWARNING: Oil and gasoline are highly flammable and explosive under certain conditionsUse extreme caution when using propane torch in this environment22Once these areas are thoroughly heated, add tension to the puller by turning the large nutContinue tensioning the puller until the counterbalance assembly is completely removedReassembly Note: For reassembly of counterbalancer, heat areas (A) and (8) and press the balancer and bracket back into place23With counterbalance assembly removed, follow instructions for crankshaft service on pages 7.31 7.36 24The injection oil check valve is tested using the Mity Vac (PN 2870975)With the Mity Vac in the pressure mode the check valve should release between and PSI