Polaris PREDATOR 90 Owner's Manual page 174

Engine Doesn't Turn Over
Possible Cause
Low battery voltage
Loose battery connections
Loose solenoid connections
Engine Pings or Knocks
Possible Cause
Poor quality or low octane fuel
Incorrect ignition timing
Incorrect spark plug gap or heat range
Solution
Recharge battery with .5 amp charger
Check all connections and tighten
Check all connections and tighten
Solution
Replace with recommended fuel
See your Polaris dealer
Set gap to specs or replace plugs
Troubleshooting
171