Do you only have change the flywheel or also the sprag clutch
at the same time?
Changing both is good but makes us question if the solution is to be on one or the other repair.
Due to the fact that during our previous trouble shooting we have experienced many times violent back firings , and while continueing with all kind of error seeking like mixture igntion etc , our sprag clutch has expereinced so many violent back firing that at a certain moment while staring / cranking the engine it sounded like a old fashioned coffee beans shredder.
So coming on the questions if your spragclutch has to be replaced ; it all depents how many violent kick back it might have suffered . When occasionally a few times you might concider to leave it as it is . However if any doubt => replace it also .
Rgds
Jaap
Aero Club Valkenburg Netherlands
www.ac-valkenburg.nl
You are absolutely right. If any of you have a kick back problem on start up you need to find out what the cause it immediately. Too many kickbacks can indeed destroy the sprag clutch. That requires the removal of the stater / water pump housing on the engine and special tools.
Roger Lee LSRM-A & Rotax Instructor & Rotax IRC Tucson, AZ Ryan Airfield (KRYN) 520-349-7056 Cell
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