Minor inspections and adjustments
Among the BMW-lsetta owners who have
possessed a motorcycle or a scooter there
are many whose technical knowledge allows
them to do the minor repairs by themselves.
Therefore we included in this instruction
manual a number of repair jobs which might
be undertaken by those drivers who - besides
their technical knowledge — possess the
required special tools and appliances,
gauges, car lifts, support stands, etc. We
inserted these instructions also for the
purpose of providing the BMW-lsetta owner
with the necessary records, in order to have
these jobs also performed at places lacking
an authorized BMW Service Station.
Sparking plug
Removal of the screw plate on the body panel
behind the seat squab gives access to the
cylinder head of engine for the sparking plug
and valve treatment (figure 54). Remove the
sparking plug with the aid of a spark plug
spanner (figure 55), clean it with a wire brush
(figure 56), and reset the electrode gap (0.6
mm = .024") by means of a gauge (figure
57).
Valves
Valve checking and adjustment as indicated
in the following lines should be carried out
every 4000 miles. The valves are adjusted at
T.D.C. compression, when the two valves are
closed in the instant of ignition. The setting
T.D.C. compression is described in detail on
page 25 under ignition timing. Make it a rule
not to adopt too small a clearance as this
might cause the valves to burn and thus
create major troubles.
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