2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 185Get this manual
ELECTRICAL
SPECIAL TOOLS
PART NUMBER PV-43568 2870836 2870630 8712100 or 8712500 TOOL DESCRIPTION Fluket77 Digital Multimeter Battery Hydrometer Timing Light Tachometer
TIMING CHECK PROCEDURES
1The ignition timing check hole is in the starter recoilmagneto housingRemove the check plugNOTE: The ignition timing marks are stamped on the outside of the flywheelIgnition timing must be inspected with the engine at room temperature (68F20 C)2With the transmission in neutral, start the engine and set engine speed to 5000 +- 200 RPM3Direct the timing light at the ignition timing check hole and check the ignition timingNOTE: Do not allow the engine to warm upThe timing will retard approximately when the engine is warmStator Adjustment
Flywheel Rotation