12 12 072 Replace one spark plug connector (M40, M42, M43, M44, M73).

Move rodent protection on ignition leads to one side. Cut off ignition lead directly behind connector.

Fig 1: Cutting Ignition Lead

Strip insulation from ignition lead with insulation stripping pliers off a 6 mm length (A), wire cross section of 1.5 mm2.

Fig 2: Stripping Insulation From Ignition Lead

Fit special tool 12 1 083 to special tool 12 1 081.

Fig 3: Assembling Special Tool To Special Tool

Insert connector (1) in corresponding section of matrix.

Fig 4: Inserting Connector

Preload contact by squeezing matrix in hand pliers. This secures connector (1) in the matrix.

Fig 5: Securing Connector In Matrix

Insert insulation-stripped wires (1) firmly home in connector. Press handles of pliers firmly together. Pliers open.

Fig 6: Inserting Insulation-Stripped Wires In Connector

Remove crimped connector with ignition lead. Crimping of wires (1) and insulation (2) (tension relief) must be uniform right around circumference of connector.

Fig 7: Identifying Crimped Wires And Insulation Condition

Slide special tool 12 1 087 onto spark plug connector. Coat ignition lead with special tool 12 1 088 (anti-friction coating). Insert ignition lead in special tool 12 1 086. Insert ignition lead in spark plug connector: adapter must audibly locate in spark plug connector.

Fig 8: Identifying Special Tool