Husqvarna 531RB Workshop Manual page 31

• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, refer to
on page 60 .
• Replace the spark plug if it is necessary.
7.8.3 To do a spark test of the ignition module
1. Disconnect the spark plug cable from the spark plug.
2. Disconnect the spark plug from the cylinder.
3. Connect the ignition tester to the spark plug cap and
ground the clip to the cylinder.
4. Use the knob to adjust the distance between the 2
electrodes. Set the distance to 6 mm.
Note: 6 mm is 6 marks on the scale.
5. Pull the starter rope handle with force. If the ignition
module operates correctly, there is a clear blue
spark between the electrodes. If there is no spark,
examine the spark plug cable.
935 - 001 -
7.8.4 To examine the spark plug cable
Technical data
If there is no spark when you do a spark test of the
ignition module, you must examine the spark plug cable.
1. Remove the ignition module. Refer to
2. Remove the spark plug cable and the spring from
3. Turn the spring to remove it from the cable.
4. Cut approximately 5 mm of the cable.
disassemble and assemble the ignition system on
page 33 .
the spark plug cap.
To
~ 5 mm
Repair instructions- 31