2008 Polaris Sportsman 700/800/700 X2 EFI Service Manual, Page 178Get this manual
CLUTCH SYSTEM Drive Clutch Spring
Measuring Spring Length: With the spring resting on flat surface, measure its free length from the outer coil surfaces as shownRefer to the spring specification chart for specific free length measurements and tolerancesAlso check to see that spring coils are parallel to one anotherDistortion of the spring indicates stress fatigue, requiring replacement
Table 6-1: Primary Clutch Springs
PART7041021 7041022 7041063 7041132 7041168 7041157 COLOR CODE Plain Black Purple White Green BlueGreen WIRE DIA.157" .140" .168" .177" .177" .177" FREE LENGTH4.38" 4.25" 4.37" 2.92" 3.05" 2.53"
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 RPMControls 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 condition