74-00-00
page 52
May 01/2007
Effectivity 912 Series
Edition 1 / Rev. 0
d02624
BRP-Rotax
Maintenance Manual
3.21) Interference suppression box (only on the 912 Series)
See Fig. 74-35.
â—† NOTE: Fitted in serial production up to 1995!
3.21.1) Interference suppression box dismantling
The interference suppression box contains two electronic boxes, four
dual ignition coils and two capacitors. Each interference suppression
box bears a consecutive serial number on the cover. Always quote this
serial number in the event of inquiries.
Before removal, all eight ignition cables must be marked as shown on
the cover to ensure correct reassembly. Remove the 3 countersunk
screws M4x12 and take off the top terminal strip. Now the individual
ignition cables can be replaced as necessary.
Mark and pull off all connections for the ignition coils. Remove the four
countersunk screws M4x12 on the bottom side of the electronic box.
Unscrew the grounding cable at the ignition coil. Now the complete
ignition coil group can be taken out. If necessary, the electronic boxes
can also be removed after closing the shorting cables on the capacitors.
Check the capacitors and replace if necessary. Now all individual parts
can be inspected.
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