TROUBLE SHOOTING SCHEDULE

 

Problem

Procedure

 

 

 

Engine will not start.

Fuel tank empty.

 

 

 

 

 

• Faulty spark plugs (choke with a warm engine)

 

 

 

 

 

• Faulty or interchanged spark plug connections

 

 

 

 

 

• Dirt in the carburettor or fuel line, aged fuel

 

 

 

 

 

 

 

 

 

Starter does not pull round engine.

Battery flat.

 

 

 

 

 

• Bad contact between cable and battery terminal.

 

 

 

 

 

• Lift lever for cutting unit in wrong position.

 

 

 

 

 

• Main fuse blown. The fuse is placed in front of the

 

 

 

 

 

 

battery, under the battery cover.

 

 

 

 

 

Ignition lock faulty.

 

 

 

 

 

• Hydrostat pedals not in the neutral position

 

 

 

 

 

Faulty starter motor

 

 

 

 

 

 

 

 

 

 

Engine does not run smoothly.

Wrong gear, too high.

 

 

 

 

 

Carburettor incorrectly set.

 

 

 

 

 

Air filter clogged.

 

 

 

 

 

• Fuel tank vent blocked.

 

 

 

 

 

Ignition setting defective.

 

 

 

 

 

• Dirt in the carburettor or fuel line, aged fuel

 

 

 

 

 

• Choking or incorrectly adjusted throttle cable

 

 

 

 

 

 

 

 

 

Engine seems to have no power.

Air filter clogged.

 

 

 

 

 

Plug defective.

 

 

 

 

 

• Dirt in the carburettor or fuel line, aged fuel

 

 

 

 

 

Carburettor incorrectly set.

 

 

 

 

 

• Choking or incorrectly adjusted throttle cable

 

 

 

 

 

 

 

 

 

 

Engine overheats.

Engine overloaded.

 

 

 

 

 

• Partial braking (forgotten parking brake?)

 

 

 

 

 

• Air intake or cooling flanges blocked.

 

 

 

 

 

Fan damaged.

 

 

 

 

 

• Too little or no oil in engine.

 

 

 

 

 

Ignition defective.

 

 

 

 

 

Plug defective.

 

 

 

 

 

 

 

 

 

Battery does not charge.

One or more cells faulty

 

 

 

 

 

• Bad contact between battery terminals and cables.

 

 

 

 

 

 

 

 

 

Machine vibrates.

Blades are loose.

 

 

 

 

 

Engine is loose.

 

 

 

 

 

• Imbalance on one or more blades, resulting from

 

 

 

 

 

 

damage or inferior balancing after sharpening.

 

 

 

 

 

 

 

 

 

Uneven mowing.

Blades blunt.

 

 

 

 

 

Cutting unit skew.

 

 

 

 

 

• Long or wet grass.

 

 

 

 

 

• Grass blockage under hood.

 

 

 

 

 

• Different tyre pressures on right and left sides.

 

 

 

 

 

Over-speeding

 

 

 

 

 

• Engine speed too low

 

 

 

 

 

Drive belts slipping.

 

 

 

 

 

• Broken shear pin (BioClip 90, Combi 103)

 

 

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Husqvarna Pro 18 manual Trouble Shooting Schedule, Problem Procedure