1972-1981 Polaris Snowmobiles Master Repair Manual, Page 299Get this manual
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ENGINES
3.4&46 3.5039
0.7087 0.7874 0.8268 0.8661 0.9055 0.9449 0.9843
2.4803 2.5191
2.5984 2.6378 U,772
2.7559 2.79S3
3.6