00.58
12 12 011 Checking/replacing spark
plugs
(Inspection II) check/(Inspection III) replace
•
Pull off spark plug caps with special
puller, BMWNo.123520.
•
Use spark plug wrench, BMWNo.123510, to
remove the spark plugs.
e Attention:
Do not bend electrodes - risk of breakage!
Spark plug:..................................NGK BKR 7 EKC
Electrode gap: ........................ 0.8 mm (0.0314 in)
Wear limit:.................................... 1.0 mm (0.04 in)
X Tightening torque:
Spark plug NGK BKR7EKC.......................... 25 Nm
11 12 009
Tightening cylinder heads
(Inspection I)
•
Remove cylinder head cover.
e Attention:
Catch escaping oil.
•
Select a gear and turn the rear wheel, or set the
piston to TDC on the ignition stroke by turning
the belt pulley.
Top dead centre on ignition stroke:
•
The TDC mark is visible and the inlet and exhaust
valves in the cylinder concerned are closed.
•
Tighten cylinder head nuts.
Tightening procedure after 1,000 km (600 miles)
1. Tighten the cylinder head nuts one after the
other in diagonally opposite sequence
1.1. Slacken one nut at a time
1.2. Tighten nut to initial torque.................... 20 Nm
1.3. Tighten nut to specified wrench angle...... 180°
2. Slacken/retighten M10 screw................ 40 Nm
R21000190
12 3 520
12 3 510
R21000330
R21000370
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