OK, partial success I think.
Here are some pics and I'll try to describe what I mean.
Body stripped of most stuff for cleaning and diagnosis:
[ATTACH=CONFIG]450260[/ATTACH]
Full underside view:
[ATTACH=CONFIG]450261[/ATTACH]
Feed dog drop mechanism:
[ATTACH=CONFIG]450262[/ATTACH]
Close up of the feed dog fork and drop mechanism. Point of
interference indicated by the red arrow.
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Now that I have seen this I have to figure out how and what to adjust. If you'll notice the screw that holds the part the drop shaft passes through has been messed with. I suspect it might have come loose and moved or since the shaft was badly stuck in the tube someone might have moved the thing trying to free it.
The feed dogs are not level. The front sits higher than the rear and the bottom of the teeth is above the needle plate.
The rear is the same distance lower. So I have some adjusting to do.
What I don't want to do is mess it up cos it does sew really nice stitches.
Anyone familiar with adjusting the feed dogs on one of these?
Joe