Husqvarna 524LK Operator's Manual page 17

3. The idle speed is correct when the engine operates
smoothly in all positions. The idle speed must be
below the speed when the cutting attachment starts
to rotate.
Technical data on page 21 for the
Note: Refer to
recommended idle speed.
To do maintenance on the muffler
WARNING: The muffler decreases the noise
level and points the exhaust gases away
from the operator. The exhaust gases are
hot and can contain sparks. This can cause
fire if pointed against dry and flammable
material.
WARNING: Mufflers with catalytic converters
become hot during operation. Risk of burn or
fire. This also applies at idle speed. To
examine if your product has a catalytic
converter, refer to
21 .
1. Stop the engine and let the muffler become cool.
2. Remove the muffler cover.
3. If the muffler on your product has a spark arrester
screen, do these steps:
a) Do a visual check. Replace the spark arrester
screen if it is damaged.
1309 - 001 -
Technical data on page
b) Clean the spark arrester screen if it is blocked.
Clean weekly if your product has a catalytic
converter. Clean monthly if your product does not
have a catalytic converter.
CAUTION: A blocked spark arrester
screen causes the engine to become too
hot which causes damage to the engine.
CAUTION: If the spark arrester screen is
frequently blocked, it can be a sign that
performance of the catalytic converter is
decreased. Speak to your servicing dealer to
examine the muffler. A blocked spark
arrester screen causes overheating and
results in damage to the cylinder and piston.
To clean the cooling system
The parts of the cooling system are the air intake on the
starter (A), the fins on the flywheel (B), the cooling fins
on the cylinder (C) and the cylinder cover (D).
D
A
1. Clean the cooling system with a brush weekly or
more frequently if it is necessary.
2. Make sure that the cooling system is not dirty or
blocked.
CAUTION: A dirty or blocked cooling
system can make the product too hot,
which can cause damage to the product.
C
B
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