AL-KO 127325, Manual

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Troubleshooting
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TROUBLESHOOTING
Problem System Observed Cause
Ignition spark present Defect in fuel supply or com-
pression system, mechanical
defect
Ignition system
No ignition spark ON/OFF switch actuated, de-
fect or short circuit in wiring,
spark plug or spark plug cap
defective, ignition module de-
fective
Fuel supply Fuel tank is not empty Choke not in correct position,
carburettor defective, suction
head (fuel filter) contamina-
ted, fuel pipe twisted or inter-
rupted
Inside the motor Cylinder base gasket defec-
tive, crankshaft seals dama-
ged, cylinder or piston rings
defective
Compression
On the outside of the motor Spark plug seal defective
Motor does not start, or
only with difficulty
Starter does not engage Broken starter spring, broken
parts within the motor
Hot start problems
Mechanical defect
Tank not empty, spark plug
present
Carburettor contaminated
Idling speed set incorrectly;
suction head or carburettor
contaminated
Motor starts, but stops
immediately
Fuel supply Tank not empty
Problem with ventilation
opening in fuel tank, fuel sup-
ply pipe interrupted, cable or
ON/OFF switch defective