Update: of the 6 Gearcase Screws (p/n 304071) holding the two castings of the Gearcase (p/n 390040) together I was able to loosen 1 screw. The other 5 screws seem to be seized. I tried a heat gun but no luck. A couple questions: 1) is it feasible to use a propane torch or will I likely melt/damage the seal between 2 Gearcase halves (or even damage internal gearcase seals 2) does the bushing in the propeller need to press tightly against the Gearcase O-ring p/n 303360 in order to get a tight seal? 5 years ago I replaced the stock 2-blade Propeller (due to a Spun Prop which my local PropShop said could not be " rebushinged") with a Michigan Match 3-blade p/n 012008 8-1/4" x 8" RH. Outboard has run fine with that prop, although there is some weird possible pitting/corrosion on the Gearcase near the prop. However, inside surface of the 3-blad Prop still has original paint intact, so I know inside of the prop is not rubbing the Gearcase. (I can't find original Prop, it is hiding in my workshop somewhere--or may have been lost in hurricane past September). What could be causing this pitting? Outboard has no zincs by-design (real Old School--1969). I will post a photo separately (phone camera vs. Laptop issues...) 4) if Gearcase Lube hasn't been changed in 5 years or longer, is it possible/normal for milky condition to eventually occur? If the Water Pump on this model can be changed (which it was, 5 years ago) without draining the Gearcase Lube, then the Lube in this outboard could have been well over 5 years old. Thanks in advance for any advice.
