KEEWAY F-ACT EVO Instruction & Maintenance Manual page 17

Failure Diagnosis
Failure diagnosis procedure when the engine fails to start or start difficultly
Faint or no spark between electrodes
Screw off the spark plug cap, do high-voltage wire spark over test
Strong blue spark
Check if the spark plug, spark plug cap fails
Check
Check the
there is short
supply of
circuit
ignition
broken
power
circuit
ignition coil
No contact magneto ignition system
1. Check if there is short
circuit or broken circuit of
ignition power winding
2. Check if there is short
circuit or broken circuit of
trigger winding
Engine fails to start or start difficultly
Remove the spark plug, check the electrodes of spark plug are carbon connected
No
Do the spark plug spark over test
Faint or no spark
if Check if there
is short circuit
or or broken
circuit of the
of internal system
of ignition
system
Check the ignition system
Strong blue or bluish violet spark from the electrodes
Use ignition timing light to test whether engine ignition is timing
No
1. Check if the CDI ignition
apparatus fails
2. Check if the magneto
flywheel and
winding loosen
Check if the
Use
CDI ignition
pressure gauge to test
apparatus
the
fails
compression pressure
Cylinder Cylinder
compression compression
pressure pressure
normal insufficient
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Yes
To clean out carbon
Yes
Loosen carburetor fuel
draining screw, check if
there is fuel
trigger from the
overflow pipe
Yes No
the cylinder
Check if there
cylinder
is fuel in the
fuel tank
Y
trigg
er
windi
ng es
draining
carburetor
No
To
fill
the
fuel