Husqvarna 122C Operator's Manual page 15

2. Turn the idle speed screw T, which is identified with
a "T" mark, counterclockwise until the cutting
attachment stops.
3. The idle speed must be below the speed when the
cutting attachment starts to rotate. The idle speed is
correct when the engine operates smoothly in all
positions.
To do maintenance on the spark
arrester screen
• Use a wire brush to clean the spark arrester screen.
To clean the cooling system
• Clean the air intake (A) on the starter and the cooling
fins (B) on the cylinder with a brush.
A
To examine the spark plug
CAUTION: Use the recommended spark
plug. Make sure that the replacement is the
same as the manufacturer supplied part. An
incorrect spark plug can cause damage to
the product. Make sure that the spark plug is
installed with a supressor. Speak to your
servicing dealer for more information.
1. Examine the spark plug when:
a) the engine is low on power.
b) the engine is not easy to start.
c) the engine does not operate correctly at idle
speed.
2. If, the engine is not easy to start or operate, examine
the spark plug for unwanted materials. To decrease
the risk of unwanted material on the spark plug
electrodes:
941 - 005 - 22.09.2020
a) make sure that the idle speed is correctly
b) make sure that the fuel mixture is correct.
c) make sure that the air filter is clean.
3. Clean the spark plug if it is dirty. Make sure that the
electrode gap is correct. Refer to
page 17 .
4. Replace the spark plug when it is necessary.
To apply grease to the two-piece shaft
• Apply grease to the end of the drive shaft after each
30 hours of operation.
B
To clean the air filter
1. Remove the air filter cover and remove the air filter.
adjusted.
Technical data on
15