Troubleshooting - Husqvarna 525HF3S Operator's Manual

The engine does not start
Problem
Starter pawls
Fuel tank
Carburetor
No spark
Spark plug
The engine starts but stops again
Problem
Fuel tank
Carburetor
Air filter
Blade
Problem
The blade moves slowly or
does not move.
The blade does not cut
easily.
The blade becomes hot.
1118 - 004 - 10.11.2022

Troubleshooting

Possible cause
The starter pawls cannot
move freely.
Incorrect fuel type.
Incorrect idle speed.
The spark plug is dirty or
wet.
Incorrect electrode gap.
The spark plug is loose.
Possible cause
Incorrect fuel type.
Incorrect idle speed.
Clogged air filter.
Possible causes
The blade is blocked or it is
damaged.
The blade is not sharp or it
is damaged.
There is friction between
the blades.
Recommended step
Adjust or replace the starter pawls.
Clean around the starter pawls.
Speak to an approved servicing dealer.
Drain it and use correct fuel.
Adjust the idle speed.
Make sure that the spark plug is dry and clean.
Clean the spark plug. Make sure that the electrode gap
of the spark plug is correct. Make sure that the spark
plug is installed with a suppressor.
Refer to Technical data on page 16 for correct elec-
trode gap.
Tighten the spark plug.
Recommended step
Drain it and use correct fuel.
Adjust the idle speed. Refer to
on page 12 . Speak to your servicing dealer if it is neces-
sary.
Clean the air filter.
Recommended step
Clean the blades from unwanted materials. Refer to
clean and lubricate the blades on page 14 . Remove
burrs from the blade, refer to
page 14 . Replace the blade if it is damaged.
Sharpen the blade, refer to
page 14 . Replace the blade if it is damaged.
Remove burrs from the blade and lubricate the blade.
To examine the blades on page 14 .
Refer to
To adjust the idle speed
To examine the blades on
To examine the blades on
To
15