1985-1995 Polaris Snowmobiles Master Repair Manual, Page 219Get this manual
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'-, ENGINE ELECTRICAL
DEGBTDC
130 MM ROD 70 MM STROKE MM 0.0068 0.0271 0.0609 0.1082 0.1690 0.2432 0.3309 0.4319 0.5463 0.6739 0.8147 0.9687 1.1357 1.3157 1.5086 1.7143 1.932