Reply To: Stuffing guts into Mercury KF-3 gear case issues

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Early Mercurys are no mystery. but, KF-3 has the improved Unicast gear case which incorporates 4 bearings, 2 seals, 2 sets of thin
shims which have to be to be set up just right to achieve smooth
gear engagement. According to the manual,when a different gear,bearing,shaft or gear case some adjustment of shims may be needed to achieve smooth function,
Eeasy to understand, but, so far not so easy to do. In the meantime, a crack has developed
in rear of case estending to the
water intake slits. Joe you know
what that involves. A bare case is on hand, but, getting the tab
washer flap clear of hex head screw that secures pinion gear
to drive shaft is so far a toughie. There it sets for now,
I have a pretty good idea of what
to do, but, not so good ad toing it,
Louis