Troubleshooting schedule

 

 

 

Problem

 

Cause

 

 

 

 

 

There is no fuel in the fuel tank

 

 

 

 

 

Faulty spark plug.

 

 

 

Engine does not start

 

Defective ignition cable.

 

 

 

Dirt in the carburettor or fuel line

 

 

 

 

 

 

 

Starter motor does not turn over the engine

 

 

 

 

 

Defect safety switch

 

 

 

 

 

Battery flat

 

 

 

 

 

Bad contact between the cable and battery

 

 

 

Starter motor does not turn over the

Lift lever for cutting unit in wrong position

 

Main fuse blown.

engine

 

 

 

 

Ignition lock faulty

 

 

 

 

 

 

 

Brake not activated.

 

 

 

 

 

Faulty starter motor

 

 

 

 

 

Faulty spark plug.

 

 

 

 

 

Carburettor incorrectly set

 

 

 

 

 

Air filter clogged

Engine does not run smoothly

 

 

 

Fuel tank vent blocked

 

 

 

 

 

Ignition key defective

 

 

 

 

 

Dirt in the carburettor or fuel line

 

 

 

 

 

Choking or incorrectly adjusted throttle cable

 

 

 

 

 

Air filter clogged

 

 

 

 

 

Faulty spark plug.

Engine seems to have no power

 

 

 

Dirt in the carburettor or fuel line

 

 

 

 

 

Carburettor incorrectly set

 

 

 

 

 

Choking or incorrectly adjusted throttle cable

 

 

 

 

 

Engine overloaded

 

 

 

 

 

Faulty spark plug.

 

 

 

Engine overheats

 

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

 

 

 

 

 

 

 

Blades are loose

 

 

 

Machine vibrates

 

Engine is loose

 

 

 

One or more blades unbalanced, caused by damage or poor balancing after

 

 

 

 

sharpening

 

 

 

 

 

Blades blunt

 

 

 

 

 

Long or wet grass

 

 

 

 

 

Cutting unit skew

 

 

 

Uneven mowing

 

Grass blockage under hood

 

 

 

Different tyre pressures on right and left sides

 

 

 

 

 

 

 

Over-speeding

 

 

 

 

 

Engine speed too low

 

 

 

 

 

Drive belt slipping

 

 

 

28 – English

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Husqvarna Rider 320 AWD, Rider 318 manual Troubleshooting schedule