2007-2011 Polaris IQ Snowmobiles Service Manual, Page 318Get this manual
PVT System Spring Free Length
Measure the drive and driven spring free length with the spring resting on flat surfaceReplace spring if out of specification
Drive Clutch Weights
10 Series Weights
In addition to proper free length, the spring coils should be parallel to one another when placed on flat surfaceDistortion of the spring indicates stress fatigueReplacement is required
WEIGHT 10M10M10M10M 10 10A10-54 10A 10-56 10-58 10-60 10-62 10-62M 10-64 10-64M 10-66 10-68 10-70 10-72 10-74 10-76 10-78
GRAMS(+- 1gr PART NUMBER 44 46 47.5 49.5 51 52.3 54 55 56 58 60 62 61.5 64 63.5 66 68 70 72 74 76 78