Polaris Outlaw 450 MXR Owner's Manual page 187

Troubleshooting
Engine Overheats
Possible Cause
Debris lodged in radiator screen
Plugged radiator
Insufficient coolant
Insufficient air flow due to slow operation
Excessive oil in system
Cooling system has not been bled
Foam has formed in cooling system
Bent cooling hose
Defective thermostat or thermoswitch
Blown fan fuse or defective fan
184
Solution
Remove and clean the screen
Use a garden hose to flush any debris from the radia-
tor fins. NOTE: High pressure washers can deform the
radiator fins and reduce cooling efficiency.
Check levels and fill as needed; check for leaks
Operate at a faster speed to increase air flow
Check oil level, maintain at recommended level
Bleed the cooling system
Drain and replace coolant with recommended coolant
Shorten or replace hose
See your Polaris dealer
Replace fuse and check fan for proper operation or see
your Polaris dealer