Ignition System - Husqvarna 324L Workshop Manual

CAUTION: Tighten the nuts on the muffler
with the correct torque. Tighten the nuts
again when the engine is warm. Use the
correct torque. Refer to
page 8 .
6.8.2 To clean and examine the muffler
1. Clean all components. Clean the contact surfaces of
the gasket, the heat deflector and the cylinder.
2. Examine the spark arrester for damage.
3. Examine the muffler and the muffler holder for
damage.
4. Examine the gasket for damage.
5. Replace all damaged parts.

6.9 Ignition system

6.9.1 To remove and install the spark plug
1. Remove the air filter cover and the engine cover.
Covers on page 15 .
Refer to
2. Disconnect the spark plug cap from the spark plug.
3. Remove the spark plug.
4. Examine the spark plug. Refer to
spark plug on page 25 .
5. Install in the opposite sequence.
6.9.2 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 mixture 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
on page 49 .
• Replace the spark plug if it is necessary.
1218 - 001 - 01.07.2019
Servicing data on
To examine the
Technical data
6.9.3 To do a spark test
1. Remove the spark plug from the cylinder. Refer to
To remove and install the spark plug on page 25 .
2. Connect the spark plug to the spark plug cap.
3. Make sure that the stop switch on the throttle handle
is in the start position.
4. Hold the spark plug against the cylinder and pull the
starter rope handle. If the ignition operates correctly,
you will see a spark between the electrodes on the
spark plug.
5. If no spark occurs, remove the spark plug and
connect the ignition tester (A) to the spark plug cap
Servicing tools on page 11 .
(B). Refer to
B
C
6. Connect the ground cable (C) to 1 of the cooling fins
on the cylinder.
7. Use the knob (D) to adjust the distance between the
2 electrodes to 6 mm.
Note: 6 mm is 6 marks on the scale.
8. Pull the starter rope handle.
9. Do 1 of the steps that follow.
a) If a spark occurs between the electrodes on the
ignition tester, replace the spark plug.
b) If there is no spark between the electrodes on
the ignition tester, do a test of the ignition
module. Refer to
on page 25 .
6.9.4 To examine the ignition module
1. Remove the air filter cover and the engine cover.
Covers on page 15 .
Refer to
2. Examine the connections for damage, dirt and
corrosion.
3. Examine the cables for damage.
D
A
To examine the ignition module
Repair instructions - 25