Husqvarna ST 224 Operator's Manual page 16

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.
B
5. Put the ON/OFF key in the ignition and connect
the spark plug cable to the spark plug.
To replace the impeller shear pins
The impeller shear pins protect the product from
damage. The impeller shear pins break if an object
comes into the moving parts.
16
A B
C
D
CAUTION: Use only original equipment
shear pins supplied with the product.
1. If an impeller 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 impeller hub (A) with the
holes in the impeller shaft (B) and install a new
¼-20 shear pin (C).
4. Install a ¼-20 locknut (D) on the shear pin and
tighten.
A C
D
5. Put the ON/OFF key in the ignition and connect
the spark plug cable to the spark plug.
To examine the tires
• Keep the tires free of fuel, oil and chemicals to
prevent damage to the rubber.
• Keep the tires away from stumps, stones, ruts,
sharp objects and other objects which can cause
damage to the tires.
• Keep the tire pressure correct, see
data on page 23 .
To clear a clogged discharge chute
deflector
Do not unclog the discharge chute deflector before
the following operations are made.
1. Release the auger engagement and the drive
engagement at the same time.
2. Wait 10 seconds to make sure that the augers
have stopped.
3. Turn off the product.
4. Use the tool for cleaning (at least 37 cm (15 in.)
long, included in some models) to remove the
clog.
B
Technical
1481 - 004 - 14.04.2021