- 16 -
11. TROUBLES SHOOTING
PROBLEM
PROBABLE CAUSE
CORRECTIVE ACTION
Engine does not
start.
Throttle choke not in the correct position
for the prevailing conditions.
Move throttle choke to the correct position
Fuel tank is empty.
Fill the tank with fuel: refer to the ENGINE MANUAL.
Air filter element is dirty.
Clean air filter element: refer to the ENGINE MANUAL
Spark plug 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 to 0.8mm
Spark plug is defective
Install new, correctly gapped plug: refer to the ENGINE
OWNERS MANUAL
Carburetor is flooded with fuel
Remove air filter element and pull starter rope
continuously until the carburetor clears itself and then
install the air filter element.
Faulty ignition module
Contact the service agent.
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 filter element is dirty.
Clean air filter element.
Engine operates
erratically.
Spark plug is defective.
Install new, correctly gapped plug: refer to the ENGINE
OWNERS MANUAL
Spark plug gap is incorrect.
Set gap between electrodes at 0.7 to 0.8mm
Air filter element is dirty.
Clean air filter element: refer to the ENGINE OWNERS
MANUAL
Engine idles
poorly.
Air fliter element is dirty.
Clean air filter element: refer to the ENGINE OWNERS
MANUAL
Air slots in engine shroud are blocked.
Remove debris from slots.
Cooling fins and air passages under
engine blower housing are blocked.
Remove debris from cooling fins and air passages.
Engine skips at
high speed.
Gap between electrodes of spark plug are
too close.
Set gap between electrodes at 0.7 to 0.8mm
Engine overheats
Cooling air flow is restricted.
Remove any debris from slots in shroud, blower housing,
and air passages
Incorrect spark plug.
Install NGK
BPR5ES spark plug
Mower vibrates
abnormally
Cutting assembly is loose.
Tighten the blade
Cutting assembly is unbalanced
Balance or replace the blade
