1972-1981 Polaris Snowmobiles Master Repair Manual, Page 242Get this manual

1972-1981 Polaris Snowmobiles Master Repair Manual, Page 242

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ENGINE ELECTRICAL Ignition Graham-Lee Test Specifications
Maximum Gap Index
50 50 50 50' 50 50 50 50 55 50 50

25 24 24 18 19 75 AMPLIFIED 18 16 21 13 70 AMPLIFIED