Wacker Neuson BH23, Operator'S Manual

Page: 45 / 68

11 Maintenance
45
11.4.5 Checking/cleaning/replacing spark plug
Performing preparations
1. Switch off the engine.
2. Let machine cool off.
Removing the spark plug
1. Clean around the spark plug thoroughly.
2. Pull off the spark plug cap from the spark plug.
Note: Do not pull the spark plug cap off the spark plug by the ignition cable.
3. Loosen and unscrew the spark plug with a spark plug wrench.
Checking/cleaning the spark plug
1. Check the isolator – if damaged, replace the spark plug.
2. Clean the electrodes with a wire brush.
3. Measure the spark plug gap with a feeler gauge – if necessary, correct it by
bending the lateral electrode.
See the chapter
Technical data for the spark plug and electrode gap.
4. Check the spark plug gasket – if damaged, replace the spark plug.
CAUTION
Touching a hot spark plug can cause burns.
f
Only remove the spark plug when the engine has cooled down.
Item Designation Item Designation
1 Spark plug air gap 2 Isolator