To Adjust The Idle Speed; To Clean The Cooling System; To Do A Check Of The Spark Plug; To Do Maintenance Of The Muffler - Husqvarna 578BTF Manual De Usuario

Maintenance
Examine the spark plug. Refer to
Clean the cooling system.
Clean the external surface of the carburetor and the area around it.
Clean the fuel tank.
Examine all cables and connections.
Examine and clean the spark arrestor screen on the muffler (for products without
catalytic converter).
Examine and clean the spark arrestor screen on the muffler (for products with
catalytic converter).
Examine the spark plug. Replace if it is necessary.

To adjust the idle speed

1. Make sure that the air filter is clean and the air filter
cover is attached.
2. Adjust the idle speed with the idle speed screw. To
see where the idle speed screw is on your product,
Product overview on page 2
refer to

To do a check of the spark plug

CAUTION:
spark plug. Refer to
18 . An incorrect spark plug can cause
damage to the product.
1. If the product is not easy to start or to operate
or if the product operates incorrectly at idle speed,
examine the spark plug for unwanted materials. To
decrease the risk of unwanted material on the spark
plug electrodes, do these steps:
a) make sure that the idle speed is correctly
adjusted.
b) make sure that the fuel mixture is correct.
c) make sure that the air filter is clean.
2. Stop the engine and let the product become cool.
3. Clean the spark plug if it is dirty.
4. Make sure that the electrode gap is correct. Refer to,
Technical data on page 18 .
5. Replace the spark plug monthly or more frequently if
necessary.
1913 - 001 - 16.08.2022
To do a check of the spark plug on page 13 .
Use the recommended
Technical data on page

To clean the cooling system

CAUTION:
system can make the product too hot, which
can cause damage to the product.
The cooling system includes the cooling fins on the
cylinder and the air intake screen.
• Make sure that the cooling system is not dirty or
blocked.
• Clean the cooling system with a brush weekly or
more frequently if it is necessary.

To do maintenance of the muffler

WARNING:
a defective muffler.
WARNING:
hot during and after operation, also at idle
speed. Use protective gloves to prevent burn
injuries.
1. Stop the engine and let the muffler become cool.
2. Replace the spark arrester screen (C) if it is
damaged.
Daily Weekly Monthly
X
X
X
X
A dirty or blocked cooling
Do not use a product with
The mufflers become very
X
X
X
X
13