Kawasaki Brute Force overheating: radiator, fan and coolant
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Applies to: Kawasaki Brute Force 650 and 750
Symptoms
- Temperature light on during slow trail riding
- Fan doesn't seem to run
- Coolant pushed out of the overflow
Why it happens
The radiator sits low and packs with mud. A failed fan fuse, switch or motor, or air trapped in the system, adds to it at low speed where there's little airflow.
How to fix it
- Wash the radiator from the back side out until you can see light through it.
- Check the fan fuse, then test the fan motor directly with battery power.
- Test the fan switch per the manual's temperature spec.
- Refill coolant and bleed air per the manual.
Tools and parts
- Garden hose
- Multimeter
- Coolant
- Fan switch or fuse
What the factory service manual covers
Cooling system: fan switch test, fan circuit, coolant capacity and bleeding. The full procedure, specs and wiring diagrams are in the factory service manual for your machine.