Ignition System - Husqvarna SG 13 B Operator's Manual

Ignition System

The engine is equipped with an electronic ignition
system. Only the spark plug requires maintenance.
For recommended spark plug, see "Technical data".
IMPORTANT INFORMATION
Fitting the wrong spark plug type can damage
the engine.
1. Remove the ignition cable shoe and clean around
the spark plug.
2. Remove the spark plug with a
plug socket wrench.
3. Check the spark plug. Replace the spark plug if the
electrodes are burned or if the insulation is cracked
or damaged. Clean the spark plug with a steel
brush if it is to be reused.
4. Measure the electrode gap with a gapping tool.
The gap should be 0.7-0.8 mm/0.028-0.031".
Adjust as necessary by bending the side electrode.
5. Reinsert the spark plug, turning by hand to avoid
damaging the threads.
IMPORTANT INFORMATION
Inadequately tightened spark plugs can
cause overheating and damage the engine.
Tightening the spark plug too much can
damage the threads in the cylinder head.
6. After the spark plug is seated, tighten it using
a spark plug wrench so that the washer is
compressed. A used spark plug should be turned
1/8-¼ of a turn from the seated position. A new
spark plug should be turned ½ a turn from the
seated position.
7. Replace the ignition cable shoe.
38 -
HUSQVARNA
MAINTENANCE
/ " (21 mm) spark
13
16
8011-027
8011-054