Service manual

41SHB MPE850 Rev 1.1 | 406555 |
1
4
2
3
8.6 Checking spark plugs
Remove spark plugs with a cold engine.
► Disconnect the wire harness connectors
from the ignition coils
1
.
► Unscrew bolts
2
.
► Unplug ignition coils
3
.
► Remove the spark plugs
4
using a spark
plug wrench.
– Serrated lock washer
– Hexagon screwdriver 5 mm
– Torque wrench
– Reversible ratchet
– Hexagon screwdriver
socket 5 mm
– Spark plug wrench
– Feeler gauge
– Spark plug brush
8 Service tasks in the workshop
8.6 Checking spark plugs