Aircleaner, valve clearances 77
Detaching the air cleaner (BMW630 CS):
Unscrew the nut holding the air cleaner.
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deaner.
Detaching the air cleaner mth airflow
meter (BMW 633 Csi)
Loosen the hose clip (1) on the throttle
butterfly stub pipe and pull off the
flexible gaiter. Detach plug (2) at the air-
flow meter and lift out the air cleaner
complete with airflow meter from the
mountings.
Take off the rocker cover (cap nuts and
washers, 10 mm wrench).
Checking and adjusting valve clear-
ances: every 15000 lm (10000 miles)
during a BMW lnspection, with the
englne stopped and cold (coolant
temperature max. 35°C (95aF) or as
stated in repai r shop instructions.
Take off the air cleaner.
Detach the rocker cover (10 mm cap nuts
and washers).
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feeler gauge between the inlet or exhaust
valves and their rockers. Checking se-
quence should correspond with the firing
order (1-5-3-6-2-4), and the mea-
surement should be taken at top dead
center on the compressìon stroke. Adjust
valve clearance if necessary in this
position.
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