To Lubricate The Product; To Inspect The Augers And The Scraper Bar; To Replace The Auger Shear Pins; To Examine The Spark Plug - Husqvarna ST 224 Manual Del Usuario

8. Fill the engine with oil, see
oil on page 11 .

To lubricate the product

• Lubricate the pivot points (A) with oil.
• Lubricate the engine (B) with oil.
• Apply a small amount of lithium grease to the
interlock bosses (C) at the beginning of each
season or every 25 hours of use.
C
B
A
Muffler
The muffler keeps the noise levels to a minimum and
sends the exhaust fumes away from the operator.
Do not use the product if the muffler is missing or
defective. A defective muffler increases the noise
level and the risk of fire.
Examine the muffler regularly to make sure that it is
attached correctly and not damaged.
CAUTION: The muffler becomes very
hot during and after use and when the
engine operates at idle speed. Be careful
near flammable materials and/or fumes
to prevent fire.

To examine the spark plug

CAUTION: Always use the
recommended spark plug type. Incorrect
spark plug type can cause damage to
the product.
• Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
• To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
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.
16
To fill the engine with
• If the spark plug is dirty, clean it and make sure
that the electrode gap is correct, see
data on page 24 .
• Replace the spark plug if it is necessary.
To inspect the augers and the
scraper bar
1. Before each use, inspect the augers and the
scraper bar for wear.
2. If the edge of the scraper bar is worn, reverse the
scraper bar. If the scraper bar has damages or is
worn on both edges, replace it.
3. If the edges of the augers are worn, contact an
authorized service center to replace them.

To replace the auger shear pins

The auger shear pins protect the product from
damage. The auger shear pins break if an object
comes into the moving parts.
CAUTION: Use only original equipment
shear pins supplied with the product.
1. If an auger shear pin breaks, stop the engine and
wait for the moving parts to stop.
2. Remove the ON/OFF key and disconnect the
spark plug cable.
3. Align the hole in the auger hub (B) with the hole
in the auger shaft (C) and install a new ¼ - 20 x 2
shear pin (A)
4. Install a ¼-20 locknut (D) and tighten.
Technical
694 - 003 - 07.11.2019