Engine Mount Bolts
All Kitfox™ Builders with Rotax 912 Engines Serial #4005177
SkyStar Aircraft Corporation
have just received notice from Rotax that they have changed the 912
engine casing. The long through bolt (formerly used to bolt the #45004
and #45005 engine mount
brackets to the engine) is no longer being supplied with 912 engines.
The through bolt was used to bolt the rear bushings of the engine
mount brackets to the crankcase as well as to hold the crankcase
halves together. Please refer to the attached drawing from the Rotax
Owners manual, #20 is the bolt that is no longer supplied with the 912
912’s subsequent to Serial Number 4005177 now use a 10mm allen bolt
which threads directly into the left crankcase half from the right
crankcase half. This bolt is not long enough to mount the right engine
mount bracket and still retain adequate thread engagement in the left
crankcase half. If you have a 912 with serial numbers subsequent to
NOT BOLT THE
ENGINE MOUNT BRACKET TO THE CRANKCASE WITH THE 10mm ALLEN BOLT
SUPPLIED WITH THE ENGINE. Running an engine with
this installation could cause severe damage to the engine.
Aircraft will be sending out the appropriate bolts (one M1O x 130mm
for the right side and an extra M1O x 50mm for the left side) as they
become available. If you have any questions, please contact our
technical department at (208)-466-171 1 or by FAX (208)-466-7194.