I was working on a 158.1802 and wondered if the chain stitch adapter would fit.
I removed the needle plate insert and tried one. It fit.
I actually removed the shuttle and the race cover to examine just how that silver gizmo fit in the hook. There is a hole in the hook. Turns out, you don't have to remove the shuttle hook at all. The adapter snaps right in.
The 1802 winds a fine bobbin as well. But it is not my machine. It is Betsy's. While what's hers is mine and mine is hers, the 1802 is too nice a machine to relegate as a chain stitcher/bobbin winder only.
An 158.1814 I bought a few years ago accepts the very same chain stitch adapter. However it will not form a chain stitch unless the SLR is set at about 10. Set at a longer stitch length, the sucker just won't pick up the thread. I can live with that but I am not so fond of the 1814. It has an odd thread path and it just growls when it runs. Plus, it winds a lousy bobbin. OK. It winds an adequate bobbin but not good enough for the Bailey. AMHIK.
Because I have three chain stitch adapters I looked for machines to match. I checked out my 158.1803. Voila, hole in the shuttle.
The photos above are of the chain stitch adapter in my 158.1803. It winds a fine bobbin; a very fine bobbin. However it is impossible to disengage the drive shaft in BW mode without taking the top off of the machine to manually compress the release. This I can live with. The top of the machine pops off easily. I will be using the machine primarily for BW anyway. When I need it for chain stitching I can engage the drive shaft easily. It is the perfect combination.