I got the coupling separated. The gear flange attachments on these
small Drivesavers appear to be molded in studs. The nuts on them were
thoroughly rounded and buggered up when the unit was installed so it
probably isn't coming off the gear unless the engine comes out of the
boat.

Picture here and more info he

Http://home.maine.rr.com/rlma/Strider0605.htm#Latest

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Roger Long