1972-1981 Polaris Snowmobiles Master Repair Manual, Page 316Get this manual

1972-1981 Polaris Snowmobiles Master Repair Manual, Page 316

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ENGINES
Remove the cylinders

Using the piston support block (PN 2870390) and supporting the piston as shown, remove the piston pin retainersThen using the piston pin puller (PN 2870