Check valve clearance and readjust, if necessary.
Mount cylinder head cover.
Check gaskets and replace as necessary.
8.14 Cleaning, Check and Setting of Spark Plugs
Removal of spark plugs.
Disconnect spark plug connectors.
Unscrew connectors on shielded spark plugs.
Caution:
Do not unscrew spark plugs when the engine is hot.
Cleaning of spark plugs.
Clean spark plugs by means of a plastic brush in a degreasing solution. Do not use a
steel or brass brush for cleaning. Do not sandblast spark plugs.
Check electrode gap and adjust, if necessary (not for spark plug LB-N41.0 and LB-L41.0).
Check electrode gap with a nozzle gauge and correct by bending the ground electrode(s)
The electrode gap is 0.4 to 0.5 mm.
Install spark plugs, reattach spark plug connectors.
Grease spark plug thread with graphite grease P/N: 170.210.010.
Torque 25 Nm.
Electrodes must always be free from graphite grease! Do not use copper paste.
Approved spark plugs.
Se „Technical Data“.
It is recommended to change spark plugs every 150 operating hours.
Note:
The condition of the spark plugs removed from the engine discloses the following information:
Light grey:
Spark plug and engine adjustment o.k.
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