BMW R 1100 S, Repair Manual

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00.38
Checking freedom of throttle cable,
checking for chaffing and kinks,
replacing if necessary
Checking throttle-cable play
Checking and adjusting idle speed
and throttle-valve synchronisation
(Inspections I, II and III)
•
Test-drive the motorcycle until the engine is
warm, or allow the engine to idle for approxi-
mately 10 minutes.
e
Caution:
Do not allow the engine to idle for longer than
20 minutes.
Oil temperature: ...................at least 90 ° C (130 °F)
•
Push back rubber cap (arrow) on throttle and
choke cables.
•
Use the adjusting screws to adjust play of throttle
and choke cables.
Play of choke cable: .......... approx. 1 mm (0.04 in)
Play of throttle cable: ........ approx. 1 mm (0.04 in)
•
Turn the adjusting screws to adjust the play of
the cables for the left and right throttle valves.
Play of throttle cable: ........ approx. 2 mm (0.08 in)
•
Connect hose of BMW Synchro to vacuum
adapter and connect cables to BMW MoDiTeC.
•
Adjust idle speed by turning the air bypass
screws while checking that the carburettors are
balanced.
Idle speed: .......................................1,100
±50
rpm
L
Note:
Make sure that both throttle valves are closed.
e
Caution:
Do not tamper with the sealed stop screws of the
throttle valves, as otherwise the idle-speed volume
flow will have to be reset by the manufacturer
•
Carefully turn the adjusting screw of the left throt-
tle valve and reduce play until the reading of the
Synchro tester changes.
•
Turn the adjusting screw very slightly in the op-
posite direction until the reading returns to its
original value.
•
Tighten the locknut to secure.
L
Note:
Make sure that the reading does not change when
you tighten the locknut.
•
Adjust the right throttle valve in the same way.
L
Note:
Zero play can cause the throttle valves to rattle.
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