Ignition System - Husqvarna 333RB Mark II Workshop Manual

3. Turn the idle adjustment screw counterclockwise
until the cutting attachment stops.
Technical data on page 46 for the
Note: Refer to
recommended idle speed.

7.8 Ignition system

7.8.1 Introduction
The engine has an electronic ignition system fully
without moving parts. A defective component cannot be
repaired, but must be replaced by a new component.
If the engine does not fire, the ignition module can be
damaged. Before you replace the ignition module, do
the tests that follow.
7.8.2 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 46 .
• 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.
24 - Repair instructions
3. Connect the ignition tester to the spark plug cap and
4. Use the knob to adjust the distance between the 2
5. Pull the starter rope handle with force. If the ignition
7.8.4 To examine the spark plug cable
If there is no spark when you do a spark test of the
Technical data
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
ground the clip to the cylinder.
electrodes. Set the distance to 6 mm.
Note: 6 mm is 6 marks on the scale.
module operates correctly, there is a clear blue
spark between the electrodes. If there is no spark,
examine the spark plug cable.
disassemble the ignition system on page 26 .
the spark plug cap.
To
1291 - 001 - 27.09.2019