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28 – English
Troubleshooting schedule
Problem Cause
Engine does not start
There is no fuel in the fuel tank
Faulty spark plug.
Defective ignition cable.
Dirt in the carburettor or fuel line
Starter motor does not turn over the engine
Defect safety switch
Starter motor does not turn over the
engine
Battery flat
Bad contact between the cable and battery
Lift lever for cutting unit in wrong position
Main fuse blown.
Ignition lock faulty
Brake not activated.
Faulty starter motor
Engine does not run smoothly
Faulty spark plug.
Carburettor incorrectly set
Air filter clogged
Fuel tank vent blocked
Ignition key defective
Dirt in the carburettor or fuel line
Choking or incorrectly adjusted throttle cable
Engine seems to have no power
Air filter clogged
Faulty spark plug.
Dirt in the carburettor or fuel line
Carburettor incorrectly set
Choking or incorrectly adjusted throttle cable
Engine overheats
Engine overloaded
Faulty spark plug.
Air intake or cooling flanges blocked
Fan damaged
Too little or no oil in engine
Ignition defective
Battery does not charge
One or more battery cells faulty
Poor contact on the battery terminal cable connectors
Machine vibrates
Blades are loose
Engine is loose
One or more blades unbalanced, caused by damage or poor balancing after
sharpening
Uneven mowing
Blades blunt
Long or wet grass
Cutting unit skew
Grass blockage under hood
Different tyre pressures on right and left sides
Over-speeding
Engine speed too low
Drive belt slipping