Cooling System; Magneto Air Gap - Stihl MS 18 Servise Manual

17. Cooling System

Verify that the cooling fins are in good condition and that the
air path to the flywheel and through the engine from the
flywheel is not blocked or restricted in any way
Verify that the flywheel fins are in good condition
© STIHL Inc., Virginia Beach, VA 2013

18. Magneto Air Gap

Line up the pole shoes in the
flywheel with the magneto
Observe the gap between the
ignition module and the
flywheel
The specification is .008"
It is not absolutely
necessary to measure this
with a gauge, just be sure
the flywheel is not rubbing
on the module and that the
gap does not look
excessively wide
© STIHL Inc., Virginia Beach, VA 2013
US/STR
US/STR
confidential
confidential
30