Husqvarna ST 424 Manuel D'utilisation page 22

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:
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) on the shear pin and
tighten. (Fig. 82)
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.
CAUTION:
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. (Fig. 83)
5. Put the ON/OFF key in the ignition and connect the
spark plug cable to the spark plug.
To replace the fuse
The fuse holders are installed behind the battery cover.
(Fig. 84)
• Replace the fuse for engine control unit (A) with a 5
A fuse.
• Replace the fuse for the starter solenoid (B) with a
20 A fuse.
• Replace the fuse for the LED and the heated grip (C)
with a 5 A fuse.
• Position (D) contains a backup 5 A fuse.
22
Use only original equipment
Use only original equipment
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
on page 28 .
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.
WARNING:
into the discharge chute deflector or
inside the auger bucket.
To replace the scraper bar
1. Put the scraper bar (A) in a reversed position when it
is worn to the edge of the housing. (Fig. 85)
2. Replace the scraper bar if it is worn on both sides or
if it is damaged.
Drive belts
WARNING:
product are of special construction and
should be replaced by original equipment
manufacturer (OEM) belts available from
your nearest service center. To use other
belts than OEM can cause personal injury or
damage to the product.
WARNING:
requires separation of the product. While
separating the auger housing from the
frame, it is important that an assistant
stands in the operating position and holds
the product handles. Serious personal injury
and/or damage to the product could occur if
the product falls during the belt replacement
process.
To prepare for replacement of the belts
1. Remove the fuel from the fuel tank.
Technical data
Do not put your hands
The v-belts on your
The belt replacement
876 - 019 - 05.10.2023