Husqvarna P 535HX Operator's Manual page 57

Problem
The engine is too hot.
The product releases black
smoke.
The product releases blue
smoke.
The product releases white
smoke.
The engine apparently has no
power.
The 12 V battery does not
charge.
There is vibration in the product.
1262 - 004 - 04.06.2020
Cause
The engine has too high load.
The coolant level is too low.
The engine oil level is too low.
The cold air intake or the cooling fins are blocked.
The fuel injector is defective.
The fuel injection pump is defective.
The air filter is clogged. Refer to
There is incorrect fuel type in the fuel tank.
The engine oil level is too high.
The engine is defective.
The cylinder in the engine is defective.
Coolant water enters into the combustion chamber.
The air filter is clogged. Refer to
The fuel filter is clogged. Refer to
There is air in the fuel system.
The fuel pressure is too low.
The fuel pump is defective.
The the fuel injection pump is not synchronized.
The engine is defective.
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
The blades are loose. Refer to
One or more of the blades are not balanced. Refer to
page 52 .
The engine is loose.
The bevel gear is loose.
The hydraulic pump is loose.
The engine is defective.
The drive shaft is defective.
The vibration damping units and/or rubber connectors are worn out.
To clean and replace the air filter on page 47 .
To clean and replace the air filter on page 47 .
To replace the primary fuel filter on page 48 .
To examine the blades on page 52 .
To replace the blades on
57