CFMoto ZForce overheating: radiator, fan and coolant bleed
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Applies to: CFMoto ZForce 500, 800, 950 and UForce
Symptoms
- Temperature warning on slow or muddy trails
- Fan not running when hot
- Coolant low after a coolant change
Why it happens
A mud-packed radiator, a failed fan relay or fuse, or air left in the system after coolant work stops the engine from shedding heat.
How to fix it
- Wash the radiator from the back side out.
- Check the fan fuse and relay; power the fan directly to test it.
- Fill coolant cold and bleed air per the manual.
- Check the coolant temperature sensor if the fan never switches on.
Tools and parts
- Garden hose
- Multimeter
- Coolant
What the factory service manual covers
Cooling system: bleed procedure, fan circuit, sensor specs. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.