Engine Overheating - Polaris Sportsman Forest 500 Series Owner's Manual For Maintenance And Safety

TROUBLESHOOTING
Engine Stops or Loses Power
Possible Cause
Out of fuel
Kinked or plugged fuel vent line
Overuse of choke
Water is present in fuel
Old or non-recommended fuel
Fouled or defective spark plug(s)
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose ignition connections
Low battery voltage
Incorrect fuel
Clogged air filter
Reverse speed limiter malfunction
Electronic throttle control malfunction
Other mechanical failure
Overheated engine

Engine Overheating

Possible Cause
Debris lodged in screen
Plugged Radiator
126
Solution
Refuel, cycle key to ON position three
times for 5 seconds each, then start
Inspect and replace (if equipped)
Inspect, clean and/or replace spark plugs
Replace with fresh recommended fuel
Replace with fresh recommended fuel
Inspect, clean and/or replace spark
plug(s)
See your dealer
Set gap to specs or replace plug
Check all connections and tighten
Recharge the battery to 12.8 VDC
Replace with fresh recommended fuel
Inspect and clean or replace
See your dealer
See your dealer
See your dealer
Clean radiator screen and core, clean
engine exterior, see your dealer
Solution
Remove and clean the screen. Pull on the
top portion of the screen, then remove the
lower portion.
Use a garden hose to flush any debris
from the radiator fins. NOTE: High
pressure washers can deform the radiator
fins and reduce cooling efficiency.