10 Maintenance
33 100_0302_mt_0001.fm
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.
4. See the chapter Technical data for the spark plug and electrode gap.
5. Check the spark plug gasket – if damaged, replace the spark plug.
Installing the spark plug
1. First screw in the spark plug manually then tighten it with a spark plug wrench.
Torque 22 Nm (16 lbf ft).
2. Place the spark plug cap onto the spark plug.
10.4.6 Checking the tool holder for wear
1. Insert the tool.
2. Measure the tool play 200 mm (0.66 ft) from insertion point.
Play may not exceed 6 mm (0.05 ft).
If the play exceeds 6 mm, the tool holder must be replaced.
Item Designation Item Designation
1 Spark plug air gap 2 Isolator
NOTICE
A spark plug that is too loose or too tight can damage the engine.
Tighten the spark plugs with the specified torque.
Item Value Item Value
A 200 mm (0.66 ft) B Max. 6 mm (0.02 ft)
NOTICE
Use a new tool to measure only the wear of the tool holder and not the wear of the tool.
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