4.4.6 Condenser - Stihl 009 User Manual

STIHL 009, 010, 011
Pushing armature away from flywheel
To reassemble, connect up primary
and ignition leads. Position ignition
lead on crankcase, fit the contact set
and flywheel. Push ignition armature
away from flywheel and secure in
position with pan head screws. Do not
forget the ground lead.
Now align flywheel so that the area in
which the magnets are embedded
covers half of each of the two outer
armature arms. Insert setting gauge
or 0.2 mm gauge sheet between
magnet poles and armature arms,
slacken off pan head screws and
press armature firmly against the
flywheel. Then retighten the pan head
screws.
Take away the gauge and check the
air gap with a feeler gauge. It should
be between 0.2 and 0.3 mm.
Top:
Setting gauge 1111 890 6400
Center:
Securing the armature
Bottom:
Checking air gap with feeler gauge

4.4.6 Condenser

Checking condenser with ohmmeter
5910 850 4800
The condenser is wired in parallel with
the contact breaker. While the breaker
points are opening the primary current
is fed briefly to the condenser until it is
charged. This insures that the
strength of the current flowing via the
contact breaker at this point is only
minimal and thus suppresses
excessive sparking (arcing).
A faulty condenser is often the cause
of premature erosion of the contact
breaker points and loss of ignition
voltage. The condenser's storage
capacity is 0.17 µF and can be
checked with the ohmmeter or the
Bosch ignition coil and condenser
tester EFAW 106 A. To do this,
remove the fan housing, flywheel,
contact set and the condenser lead.
To check with the ohmmeter, connect
one of the two leads to ground (e.g.
cylinder fin) and hold the other on the
condenser connection. If the
condenser is in good condition, it will
be charged and the ohmmeter's
pointer
30