2006-2008 Polaris Snowmobiles FS/FST Service Manual., Page 190Get 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 specificationWEIGHT 10M10M10M10M10M 10A10 10A 10-54 10-56 10-58 10-60 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 required10-62 10-62M 10-64 10-64M 10-66 10-68 10-70 10-72 10-74 10-76 10-78
10 Series Weights
GRAMS(+- 1g) 44 46 47.5 48.8 49.5 51 51.5 53 54 56 58 60 62 61.5 64 63.5 66 68 70 72 74 76 78 PART NUMBER 1321530 1321527 1321529 1321528 1321531 1321531 1321526 1321589 1321685 1321684 1321588 1321587 1321586 1321614 1321585 1321615 1321584 1322427 1322414 1322428 1322429 1322585 1322586