74-00-00
page 54
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02624
BRP-Rotax
Maintenance Manual
3.21.3) Interference suppression box assembly
The interference suppression box is assembled in reverse order.
Always observe the wiring diagram for the interference suppression
box. Lithiumbase grease must be applied to all cable connections to
prevent leakage current.
Push both electronic boxes into the suppression box housing and
position the pads. Connect grounding cables and primary cables to the
ignition coils. Attach ignition coil set in the suppression housing with 4
countersunk screws M4x12. Secure countersunk screws with LOCTITE
221.
Arrange ignition cables on the bottom part of the terminal strip as shown
in the wiring diagram and the description on the interference suppres-
sion box cover and attach with 3 countersunk screws M4x8. Assemble
complete retaining strip in the interference suppression box with two
allen screws M4x12. Secure all screws in the box with LOCTITE 221.
Attach ignition cables
1T
and
3B
to the ignition cable support with tie
wraps.
3.21.4) Interference suppression box fitting
For safety reasons, the interference suppression box must not be
exposed to ambient temperatures higher than 60 °C (140 °F), and due
to vibration, it should be installed in the cockpit. If the box has to be
installed on the engine due to lack of space, vibration damping
elements must be fitted. Check all grounding from the interference
suppression box to the engine and if necessary, clean the contact faces
and assemble with toothed lock washers. See Service Instruction SI
25-1994.
◆
NOTE:
On models from the year 92 onwards, resistance spark
plug 12mm (.47 in.) DCPR7E is fitted, see SB-912-
001,“Engine type 912 A, Ignition unit with resistor spark
plug“, latest issue.
Summary of Contents for MMH-912 Series
Page 463: ......
