Hi Ross, I've now been told that it's a "filter", really just a magnet to pick up any metallic particles in the gear lube. (Also have a magnet on the drain plug, neither of which had much metal on them.) I found a machined boss inside the gear case where I believe it goes, must have fallen out or didn't get place properly to begin with
(Doesn't
appear anybody has ever been in there before!)
Got all (well, most) of the parts cleaned up last weekend, ordered gaskets, seal kits, carb & fuel pump kits, water pump kit, etc. from Joe Poole on Monday, just waiting on the parts to come in.
Thanks David, it's a really good example of why initial inspection and routine maintenance schedules are so important, IMHO. Just glad I listened to that little voice in my head, the good one that is!
I actually bought this one to go on the GT-150 Gregg, but since I now have the same motor mounting bolt pattern on all three G-trons, the possibilities are endless. The PT&T option pushes her just over the 300 lb mark, may be too heavy, we'll see......