Husqvarna ST 124, Operator'S Manual

Page: 16 / 468

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 type is correct.
c) Make sure that the air filter is clean.
• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, refer to Technical data
on page 19
. (Fig. 51)
• 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 adjust the skid plates
The skid plates prevent damage to the bottom of the
snow thrower. Adjust the skid plates (A) when the
locknut (B) is loose, or the skid plate is not at the correct
distance from the ground. No adjustment is necessary
for standard installation.
1. Loosen the locknut (B) with a 13 mm (½ in.) open
wrench.
2. Move the skid plates (A) up or down.
a) On flat surfaces set the distance between the
scraper bar and the ground to 5-6 mm (0.2-0.25
in).
b) On rough surfaces set the skid plates (A) in a
position where the scraper bar is above the top
of the ground.
WARNING: Make sure that gravel
and stones do not go into the
product. Objects that eject at high
speed can cause injury.
3. Tighten the locknut (B). (Fig. 52)
To replace the shear pin
The shear pin protects the product from damage. It
breaks if a foreign object enters the moving parts.
1. If the shear pin breaks, stop the engine.
2. Attach a new shear pin (A) and a new clamp spring
(B). (Fig. 53)
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 Technical data
on page 19
.
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 clean the product
• Clean plastic parts with a clean and dry cloth.
• Do not use a high pressure washer to clean the
product.
• Do not flush water directly on the motor.
• Use a brush to remove leaves, grass and dirt.
16 1272 - 005 - 16.06.2020