Husqvarna LB146, Operator'S Manual

Page: 15 / 392

Engine troubleshooting
Problem Possible cause Solution
The engine does not start. The ignition cable is not connected cor-
rectly.
Connect the ignition cable to the spark
plug.
The fuel tank is empty. Fill the fuel tank with correct fuel type.
The fuel is old. Drain the fuel tank and the carburetor.
Refuel with new gasoline.
There is dirt in the carburetor or fuel line. Clean the carburetor and/or fuel line.
The spark plug is defective. Adjust the electrode gap, clean or re-
place the spark plug.
There is fuel on the spark plug. Clean the spark plug.
The engine does not stop. The stop mechanism is defective. Disconnect the ignition cable from the
spark plug. Let an approved service
agent repair the product.
The engine does not operate
smoothly.
The ignition cable is not connected cor-
rectly.
Connect the ignition cable to the spark
plug.
There is dirt in the fuel line or the fuel
has expired.
Clean the fuel line. Fill the fuel tank with
new fuel of the correct type.
There is blockage in the fuel tank cap. Clean the fuel tank cap.
There is water or dirt in the fuel system. Drain the fuel tank. Fill the fuel tank with
new fuel of the correct type.
The air filter is dirty. Clean the air filter.
The carburetor must be adjusted. Let a servicing dealer adjust the carbu-
retor.
The engine becomes too hot. The engine oil level is too low. Fill engine oil.
The air flow is not sufficient. Clean the air filter and the air filter hous-
ing.
The carburetor must be adjusted. Let a servicing dealer adjust the carbu-
retor.
There is misfire in the engine
when it operates at high
speed.
The electrode gap in the spark plug is
too small.
Adjust the electrode gap.
Unusual noises from the en-
gine during normal load.
Incorrect type of gasoline. Drain the fuel tank and the carburetor.
Refuel with new gasoline. Refer to
To
examine the fuel system on page 14
. If
the problem continues speak to your lo-
cal service dealer.
The engine does not operate
smoothly at idle speed.
The spark plug is dirty, defective or the
electrode gap is too wide.
Adjust the electrode gap or replace the
spark plug.
The carburetor must be adjusted. Adjust the carburetor.
The air filter is dirty. Clean the air filter.
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