Clean sealing surfaces

NOTE: RISK OF DAMAGE
Damage to the surface.
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage.

Do not use any metal-cutting tools.

Remove coarse backlogs from the sealing surfaces of the cylinder head and the crankcase using special tool 0 495 103 (11 4 471) .

Courtesy of BMW OF NORTH AMERICA, INC.
NOTE:
RISK OF DAMAGE
Damage to the surface.
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage.
- Do not use any metal-cutting tools.
Remove fine backlogs from the sealing surfaces of the cylinder head and the crankcase using special tool 0 495 104 (11 4 472) .

Courtesy of BMW OF NORTH AMERICA, INC.
Clean all blind holes of the cylinder head and the engine block.
Remove special tool (B) from special tool 2 364 711 .

Courtesy of BMW OF NORTH AMERICA, INC.