EN
44
TROUBLESHOOTING
Problem
Probable cause
Action
The engine will not
start.
The fuel tank is empty.
Fill the fuel tank.
The air filter is dirty.
Clean the air filter.
The spark plug is loose.
Tighten the spark plug to 25–30 Nm.
Spark plug lead is loose, or has released
from the spark plug.
Put the spark plug lead firmly on the
spark plug.
Incorrect electrode gap.
Adjust the electrode gap to 0.7–0.8 mm.
Defective spark plug.
Replace with new spark plug with the
correct electrode gap.
The carburettor is flooded.
Remove the air filter and pull the starter
cord several times until the carburettor is
dry. Replace the air filter.
Ignition fault.
Contact an authorised service centre.
Empty fuel tank, water in the fuel, or
contaminated or old fuel.
Empty the fuel tank and fill it with fresh
petrol of the right type.
The engine lacks power,
or is difficult to start.
The ventilation hole in the filler cap is
clogged.
Clean or replace the filler cap.
The air filter is dirty.
Clean the air filter.
Defective spark plug.
Replace with new spark plug with the
correct electrode gap.
The engine does not run
smoothly.
Incorrect electrode gap.
Adjust the electrode gap to 0.7–0.8 mm.
The air filter is dirty.
Clean the air filter.
The air filter is dirty.
Clean the air filter.
Irregular idling speed.
The ventilation openings in the motor
casing are clogged.
Clean the ventilation openings.
The cooling fins or air channels are
clogged.
Clean the cooling fins and air channels.
The electrode gap is too small.
Adjust the electrode gap to 0.7–0.8 mm.
The engine misfires at
high speed.
Inadequate flow of cold air.
Clean the ventilation openings, cooling
fins and air channels.
The engine overheats.
Incorrect spark plug.
Replace with spark plug of the correct
type.
The mower deck is loose.
Tighten.
The machine vibrates
abnormally.
The mower deck is unbalanced.
Balance the blades.
No drive, or faltering
drive
The wire is too slack
Tension the wire
