Checking/Renewing Spark Plugs; Taking Up Slack At Cylinder Heads - BMW R 1100 RT Repair Manual

Checking/renewing spark plugs

(Inspection II, III)
•
Pull off spark plug cap with cap assembly tool,
BMW No. 12 3 520.
•
Unscrew and remove spark plugs with spark-
plug wrench, BMW No. 12 3 510.
Electrode gap: ........................ 0.8 mm (0.0315 in)
Gap wear limit:............................. 1.0 mm (0.04 in)
e
Caution:
Do not bend electrodes - risk of breakage!

Taking up slack at cylinder heads

(Inspection I)
•
Remove cylinder head cover.
12 3 510
e
Caution:
Trap escaping oil.
RS000010
RS00002
•
Select a gear and turn the rear wheel, or set the
piston to TDC by turning the belt pulley.
Top dead centre on ignition stroke:
1. The OT (TDC) mark appears and
2. the inlet and exhaust valves of the cylinder in
question are closed.
•
Tighten cylinder head nuts.
Tightening procedure after 1000 km ( 600 miles )
1. Tighten cylinder head nuts individually in a cross-
wise pattern
1.1.Slacken off one nut
1.2.Tighten nut to init. torque ....................... 20 Nm
1.3.Tighten nut to specified wrench angle....... 180°
2. Unfasten/retighten M10 screw ................ 40 Nm
TDC
RS 00. 002
00.29