2007 Polaris Two Stroke Snowmobile Workshop Repair manual, Page 266Get this manual
BATTERYELECTRICAL SYSTEMS Ignition Timing Chart
Convert the ignition timing specification from degrees BTDC to either inches or millimeters, then use dial indicator to verify timing marksNOTE: Always disconnect the TPS on carbureted engines prior to checking ignition timing
EH122 RODSTROKE (mm) Degrees BTDC 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 73mm ROD 43mm STROKE mm 0.0042 0.0170 0.0381 0.0678 0.1059 0.1524 0.2073 0.2706 0.3422 0.4222 0.5104 0.6068 0.7114 0.8242 0.9450 1.0738 1.2106 1.3552 1.5077 1.6679 1.8358 2.0112 2.1941 2.3844 2.5821 2.7869 2.9989 3.2178 3.4437 3.6763 3.9156 4.1615 4.4139 4.6725 4.9374 5.2083 5.4852 5.7679 6.0562 6.3501 inches 0.0002 0.0007 0.0015 0.0027 0.0042 0.0060 0.0082 0.0107 0.0135 0.0166 0.0201 0.0239 0.0280 0.0324 0.0372 0.0423 0.0477 0.0534 0.0594 0.0657 0.0723 0.0792 0.0864 0.0939 0.1017 0.1097 0.1181 0.1267 0.1356 0.1447 0.1542 0.1638 0.1738 0.1840 0.1944 0.2051 0.2160 0.2271 0.2384 0.2500