1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 196Get this manual
PVTSYSTEM Drive Clutch and Driven Clutch Data
19901991 Production Specifications
Machine Model Trail Boss 250, 2x4, 4x4, 4x6, 6x6& Trail Blazer 350L Trail Boss 2x4,4x4 Engine Model Operating RPM +-200 6000 Drive Clutch Spring Color Blue Green Shift wt1.0and Gram Wt16 43 grDriven Clutch Helix Angle Spring Position 40 2-2
EC25PF-05, 07
EC35PL-02
Blue Green
High altitude recommendations above 6000 ft EC25PF engine equipped models, wind the driven clutch spring to its tightest position andor change the drive clutch weights to 16 mod EC35PL engine equipped models, wind the driven clutch spring to its tightest position
19921993 Production Specifications
Machine Model Trail Boss 250, 2x4, 4x4, 4x6, 6x6& Trail Blazer 350L Trail Boss 2x4,4x4,6x6 Engine Model Operating RPM +-200 6000 Drive Clutch Spring Color Blue Green Shift wt1.0and Gram Wt16 43 grDriven Clutch Helix Angle Spring Position 40 2-2