2007 Polaris Two Stroke Snowmobile Workshop Repair manual, Page 266Get this manual
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BATTERYELECTRICAL SYSTEMS Ignition Timing Chart
EC34-2PM 103mm ROD 55.6mm STROKE mm 0.0054 0.0215 0.0484 0.0860 0.1343 0.1933 0.2630 0.3432 0.4341 0.5355 0.6474 0.7698 0.9025 1.0456 1.198