REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200
Necessary preliminary tasks:
Switch off ignition
Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171an
NOTE: Following repairs, the corrosion protection work already begins
with the correct
removal of the PVC undercoating, antinoise compound and seam seals.
1.0 Removing sealing materials:
IMPORTANT:
Do not burn off PVC material with a gas burner or similar or heat
to
temperatures above 180ºC.