KEEWAY F-ACT EVO Instruction & Maintenance Manual page 19

The engine overheat failure diagonosis procedure
1. Check if the fuel No. is too low
or the fuel is out of date
2. Check if the engine runs at high
speed or overload for a long time
1. Check if the CDI
ignition
fails
2. Check if the
magneto
and trigger winding
loosen
Check if the operation method is proper
Yes
Yes
Wash
Yes
Check
eliminate
No
apparatus
flywheel
Engine overheat
Check the cooling system
Check if the cooling fins are stained with silt or too much oil
and
Yes
Clutch slips
To treat the clutch
slip failure
accordingly
- 18 -
No
Air cooled engine
No
Check if the cooling fans and
wind scoop break (compulsive
air cooled engine)
No
Use ignition timing light to test
whether engine ignition is timing
Yes
Check if the clutch slips
No