1972-1981 Polaris Snowmobiles Master Repair Manual, Page 416Get this manual
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TORQUE-O-MATIC DRIVE
Gram weight: 47.5:: PN 5610094
Gram weight: 43:: PN 5610084
01 02 Gram weight: 492: PN 5630225
Gram weight: 51 PN 5610088