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Problem Cause
The engine does not run smooth-
ly.
The fuel filter is clogged. Refer to
To replace the fuel filters on page 52
.
The air filter is clogged. Refer to
To clean and replace the air filter on page 50
.
The fuel tank venting is blocked.
The fuel pressure is too low.
The fuel injection pipe is loose.
There is water in the fuel.
The engine is defective.
There is incorrect fuel type in the fuel tank.
The fuel injector is defective.
The fuel injection pump is defective.
The fuel pump is defective.
The engine is too hot. The cold air intake or the cooling fins are blocked.
The engine has too high load.
The coolant level is too low.
The engine oil level is too low.
The product releases black
smoke.
The fuel injector is defective.
The fuel injection pump is defective.
The air filter is clogged. Refer to
To clean and replace the air filter on page 50
.
There is incorrect fuel type in the fuel tank.
The product releases blue
smoke.
The engine oil level is too high.
The engine is defective.
The product releases white
smoke.
The cylinder in the engine is defective.
Coolant water enters into the combustion chamber.
The engine apparently has no
power.
The air filter is clogged. Refer to
To clean and replace the air filter on page 50
.
The fuel filter is clogged. Refer to
To replace the fuel filters on page 52
.
There is air in the fuel system.
The fuel pressure is too low.
The fuel pump is defective.
The fuel injection pump is not synchronized.
The engine is defective.
The 12 V battery does not
charge.
The 12 V battery is defective. Speak to your Husqvarna service agent.
The connection at the cable connectors on the 12 V battery terminals is bad.
The DC/DC charger is defective.
The 12 V generator is defective
1591 - 008 - 12.12.2022 61
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