2005 Polaris Sportsman 700/800 EFI Service Manual, Page 165Get this manual
DRIVE CLUTCH SPRING SPECIFICATIONS
The drive clutch spring has two primary functions: 1Controls clutch engagement RPMThe springs which have higher rate when the clutch is in neutral will increase clutch engagement RPM2Controls the rate at which the drive belt moves upward in the drive clutch sheavesThis is referred to as drive clutch upshiftThe drive clutch spring is one of the most critical components of the PVT systemIt is also one of the easiest to serviceDue to the severe stress the coil spring is subject to during operation, it should always be inspected for tolerance limits during any clutch diagnosis or repairThere are other components which control upshift, but the spring is one of the primary components in insuring optimum performanceIt is very important that the spring is of correct design and is in good conditionCAUTION: Never shim drive clutch spring to increase its compression rateThis may result in complete stacking of the coils and subsequent clutch component failure300 280 260 240 220 200 180 160 140 120 100 80 60 40 20 2.5 2.25 2.00 1.75 1.50 1.25 1.19