Wacker Neuson DT08-D - Spark Plug (Petrol Engine)

BA DT08 SL EN – Edition 1.0 * dt08b510.fm 5-7
Maintenance
Spark plug (petrol engine)
Danger!
The engine is very hot after it has been in service.
Danger of burns!
☞ Allow the engine to cool down
Caution!
If the spark plug is not tightened correctly, it can become very hot and cause
engine damage.
☞ Always tighten the spark plug firmly
☞ Never use a spark plug with the wrong heat range
The spark plug must be set correctly and be free of deposits to ensure that the engine runs
correctly.
Remove spark plug B as follows:
☞ Stop the engine
☞ Remove spark plug connector A
☞ Remove spark plug B with a suitable spark plug key
☞ Check spark plug B as follows:
☞ Check the outside of spark plug B
➥ Dispose of spark plug B if it is worn, or if the insulator is torn or cracked.
☞ Measure the electrode gap with a suitable tool
➥ The gap must be between 0.70 and 0.80 mm
☞ Check the sealing ring for wear
☞ Clean spark plug B with a suitable tool (e.g. wire brush etc.) if it can be used again
Mount spark plug B as follows:
☞ Screw in spark plug B by hand to avoid damage to the thread
☞ Tighten spark plug B with a suitable spark plug key.
☞ Tighten a new spark plug B by ½ a revolution after it makes contact, in order to com-
press the sealing ring
☞ Tighten a spark plug B that is already used by 1/8 – 1/4 of a revolution after it makes
contact, in order to compress the sealing ring
☞ Fit spark plug connector A back on again
The following spark plugs have been released:
Fig. 74: Spark plug
A
0.70 mm –
0.80 mm
B
Manufacturer’s description Manufacturer
• BPR6ES NGK
• W20EPR-U DENSO