2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 32Get this manual
MAINTENANCE
IGNITION TIMING
Refer to Electrical chapter for ignition timing procedureIgnition Timing: 30 BTDC5000RPM
COOLANT STRENGTHTYPE
Test the strength of the coolant using an antifreeze hydrometer
Antifreeze Hydrometer
ENGINE-TO-FRAME GROUND
Inspect engine-to-frame ground cable connectionBe sure it is clean and tight