Drive Belts - Husqvarna ST 424 Manuel D'utilisation

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 27 .
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. Stop the product.
4. Use the tool for cleaning (at least 37 cm (15 in.) long,
included in some models) to remove the clog.
WARNING: Do not put your hands 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. 72 )
2. Replace the scraper bar if it is worn on both sides or
if it is damaged.

Drive belts

WARNING: The v-belts on your 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: The belt replacement 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.
891 - 002 -
2. Loosen the lock nut (A) that secures the chute
3. Loosen the two screws (A) that secure the belt cover
To remove the drive belt
Technical data
1. Remove the auger belt (A). See
2. Remove the 9/16 in. pulley bolt (B) and remove the
3. Remove the drive belt (D) from the lower pulley (E).
To install the drive belt
1. Put the drive belt onto the lower pulley (E).
2. Put the drive belt in the groove of the engine pulley
3. Install the 9/16 in. pulley bolt (B) and attach the
4. Install the auger belt (A). See
5. Operate all controls to make sure that the drive belt
To install the belt cover
1. Install the belt cover (B) on the frame (C) and tighten
2. Install the discharge chute.
To adjust the drive belt tension
1. Remove the belt cover. See
2. Loosen the idler pulley nut (A).
3. Move the idler pulley (B) in the direction of the belt to
4. Tighten the idler pulley nut (A).
5. Press and then release the drive speed control lever.
6. Install the belt cover. See
To remove the auger belt (for ST
424/427/430 only)
1. Remove the 5/16'' nut and the cable cover (E) from
rotator head (B) to the mounting bracket (C) to
remove the discharge chute. (Fig. 73 )
(B) to the frame (C) and remove the belt cover.(Fig.
74 )
auger belt (for ST 424/427/430 only) on page 21 .
engine pulley (C) from the engine.(Fig. 75 )
Note: Make sure that the drive belt is put in the
lower pulley groove properly.
(C).(Fig. 76 )
engine pulley (C) on the engine. Tighten the pulley
bolt ( 41-47 Nm/30-35 Ft. Lbs).
belt on page 22 .
is installed correctly and that all components move
correctly.
the two screws (A). (Fig. 77 )
replacement of the belts on page 21 .
increase the belt tension. Move it away from the belt
to decrease the belt tension.(Fig. 78 )
If the drive belt has tension when the drive speed
control lever is released, move the idler pulley away
from the drive belt to release the belt tension.
page 21 .
the frame. (Fig. 79 )
To remove the
To install the auger
To prepare for
To install the belt cover on
21