2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 52Get this manual
MAINTENANCE General TroubleshootingContinued Engine OverheatingMiscSymptoms: Engine overheats
Cooling water passages in pump restricted (check screen and passages) Impeller or pump housing damage Pump housing passage plugs missing Thermostatpopoff valve restricted Cooling water passages in engine restricted with sand or debris Loose or damaged cooling hoses or clamps Collapsed exhaust hose or pipe (restricted) Out of fuel Low compression Weak spark or no spark (see ignition troubleshooting) Lean mixture (see lean mixture troubleshooting) Choke inoperative or not closing completely Fouled spark plug(s) Water in fuel Worn, broken or cracked reeds Restricted or plugged low speedidle passages Choke or throttle closed (both must be wide open for test) Loose cylinder head or head gasket failure Rings stuck or broken, or excessive end gap Piston damage (see piston damage) Cylinder worn, improperly honed or bored, damaged Idle speed improperly adjusted Plugged or restricted low speed fuel passages Incorrectly adjusted low speed mixture screw Ignition problem Throttle linkage worn or sticking Air leaks in intake tract Hose kinked Outlet check valve clogged Vent line plugged