Stihl 5910 890 1700 Technical Information page 7

A setting gauge (part no. 4118 890 6401) is
included in the tool kit for setting the proper air
gap between the ignition module and flywheel.
The setting gauge can be used for all STIHL
4-Stroke engines.
To use the setting gauge, install the ignition
module or, if the module is already in place,
loosen mounting screws. Rotate the flywheel
so the magnet poles are not interfering with
the ignition module armature and insert the
setting gauge.
DLR 2007-02 New Special Tools ea 2012.doc
Rotate the flywheel until the magnet poles
are between the setting gauge and the
ignition module armature legs. The magnets
will draw the ignition module tight against the
setting gauge. Tighten the mounting screws
to the recommended torque and remove the
setting gauge.
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