Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 291Get this manual
REAR SUSPENSIONTRACKTRACTION Springs
Two types of springs are employed in Polaris suspensions, coil springs and torsion springsFollowing is some of the terminology used when referring to coil springsS Free lengththe length of coil spring with no load applied to the spring
Coil Spring Length
Installed Length