Effectivity 912/914 Series
Edition 1 / Rev. 0
74-00-00
page 21
May 01/2007
d02624
BRP-Rotax
Maintenance Manual
3.11) Ignition circuits inspection (ignition check)
Let engine warm up. The ignition check is performed at an engine speed of
approx. 4000 rpm (approx. 1700 propeller speed).
Switch off ignition circuit "A" with ignition switch. This causes only 1 spark plug
per cylinder to fire. The speed drop with only one spark plug per cylinder must
not exceed 300 rpm. Then perform the same inspection with ignition circuit "B"
switched off. Here, too, the speed drop must not exceed 300 rpm. The
difference in speed using only circuit A or B must not exceed 115 rpm.
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