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I do not have any experience with a 301. However it does use the same bobbin & case ?as the 221 (FW). There is a sliding latch just inside the case which locks into a groove around the stud the bobbin fits over. Raising the outer latch slides this inner latch over out of contact with the stud allowing the case to be lifted out.

As I see it there are two possibilities for your problem. One is that the case is simply stuck by the rust & not lifting out. In this case continue applying the penetrat, apply some heat, a heat gun or hair dryer works well for this & also tap on it a bit to set up vibrations which helps the penetrant go deeper. It should eventually pop free.?

2nd possibility is the connection to the inner latch is broken so the outer latch is not disengaging it. If this appears to be the case we will have to determine how to get the inner latch to release. For the last couple of days I have been suffering from a severe case of gout in one hand. I don't think I can manage getting our FW out to look at the case top help. Maybe in a couple more days it will begin to clear up. In the meantime see if ?you can determine for sure which is your problem, & if anyone has had a similar situation do feel free to jump in.?

The 301 machines were all made in Singer's plant in Anderson SC. They were the first machine to use the slant needle. They are aluminum bodied, have all metal gearing & an internal motor. They are in fact a rather nice machine, not much heavier than a FW, but larger, more powerful & much more versatile.

Miller/TN ?

On Thursday, March 23, 2017 9:32 PM, D Page <D7artist@...> wrote:

This is a bit off subject, but I am pretty new to machine repair. I received a singer 301 fixer-upper yesterday & can't get the bobbin case out. I have been able to free up the rest of the machine with penetrating oil, but there is some rust on the case & lifting the latch doesn't seem to have any effect. The hook seems to move adequately. Can anyone tell me what to do next? Thanks in advance.