Polaris Sportsman 450 HO Manual Del Propietário página 156

TROUBLESHOOTING
Engine Runs Irregularly, Stalls or Misfires
Possible Cause
Fouled or defective spark plug(s)
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose ignition connections
Water present in fuel
Low battery voltage
Kinked or plugged fuel tank vent line
Incorrect fuel
Clogged air filter
Reverse speed limiter malfunction
Other mechanical failure
Possible Lean Fuel Cause
Low or contaminated fuel
Low octane fuel
Clogged fuel filter
Kinked or plugged fuel vent line
Possible Rich Fuel Cause
Fuel is very high octane
Stopping/starting without adequate
warm-up
Incorrect fuel
Clogged air filter
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Solution
Inspect, clean and/or replace spark
plug(s)
See your dealer
Set gap to specs or replace plugs
Check all connections and tighten
Replace with new fuel
Recharge battery to 12.8 VDC
Inspect and replace
Replace with recommended fuel
Inspect and clean or replace
See your dealer
See your dealer
Solution
Add or change fuel, clean the fuel system
Replace with recommended fuel
Replace filter
Inspect and replace (if equipped)
Solution
Replace with lower octane fuel
Allow engine to warm up before operat-
ing and/or stopping
Replace with recommended fuel
Inspect and clean or replace