STIHL 029, 039
40
Remove the ignition module
mounting screws.
Pull the ignition module forward
and push back the grommet on
the high voltage output.
Unscrew the ignition lead from the
contact pin and pull it out of the
ignition module.
If necessary, ease the peg of the
lead retainer out of its seat and
remove the retainer.
Note:
Before fitting the ignition lead,
pack the high voltage output with
STIHL multipurpose grease –
see 12.2.
Important:
Do not use graphite
grease (Molykote) or silicone
insulating paste for this job.
- Push the grommet over the
ignition module's high voltage
output.
- Place the ignition module in
position, fit screws but do not
tighten down yet.
Important:
Secure ground wire with
upper screw and fit a washer on the
lower screw.
- Slide the setting gauge between
the arms of the ignition module and
the flywheel magnets.
- Press the ignition module against
the flywheel and tighten down the
mounting screws to a torque of
4.8 Nm (3.5 Ibf.ft).
Important:
Tighten the upper
screw first.
- Remove the setting gauge and
use a feeler gauge to check the air
gap. It should be 0.15 - 0.3 mm
(0.006 - 0.012").
Assembly of the remaining parts is
now a reversal of the disassembly
sequence.
Setting gauge fitted between
flywheel and ignition module
Top:
Removing lead retainer
Bottom:
Setting gauge 1127 890 6400
Top:
Ignition module mounting
screws
Bottom:
Pulling the unscrewed ignition lead
out of ignition module
