15
Trouble Shooting
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Engine does
not start.
Throttle lever not in the correct
position for the prevailing conditions.
Move throttle lever
to correct position.
Fuel tank is empty.
Fill tank with fuel: refer to the ENGINE
MANUAL.
Air cleaner element is dirty.
Clean air cleaner element: refer to the
ENGINE MANUAL.
Spark plug is loose. Tighten spark plug to 25-30Nm.
Spark plug wire
loose or disconnected from plug.
Install spark plug wire on spark plug.
Spark plug gap is incorrect
Set gap between electrodes
at 0.7 to0.8mm.
Spark plug is defective..
Install new, correctly gapped plug: refer
to the ENGINE MANUAL.
Faulty ignition module Contact authorized service centre.
Engine difficult to
start or
loses power.
Dirt, water, or stale fuel tank.
Drain fuel and clean tank. Fill tank with
clean, fresh fuel.
Vent hole in fuel tank cap is plugged. Clean or replace fuel tank cap.
Air cleaner element is dirty. Clean air cleaner element.
Engine
operates
erratically.
Spark plug is detective.
Install new, correctly gapped plug:
refer to the ENGINE MANUAL.
Spark plug gap is incorrect.
Set gap between electrodes at 0.7 to
0.8.
Air cleaner element is dirty.
Clean air cleaner element
Engine
idles poorly.
Air cleaner element is dirty.
Clean air cleaner element
Air vents in engine sh
ield are blocked.
Remove debris from air vents.
Engine
idles poorly.
Cooling fan and air passages under
engine blower housing are blocked.
Remove debris from cooling fans and air
passages.
Engine skips
at high speed.
Gap between electrodes of spark is
too close.
Set gap between electrodes at 0.7 to
0.8.
Engine overheats.
Cooling air flow is restricted.
Remove any debris from slots in shield,
blower housing, air passages.
Incorrect spark plug.
Install correct spark plug and clear
cooling fins on engine.
Mower
vibrates
abnormally.
Cutting assembly is loose. Tighten blade.
Cutting assembly is unbalanced. Balance blade.
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