Hi
I have one of these with the mechanical timer for toasting but it kept
stopping and letting the toast burn. Thinking it might be the switch
jamming I first tightened the two mounting screws but determined this
made it worse. After pulling the timer and trying it outside the
machine, and having it work well, I found the problem upon reassembly.
The mounting bracket attached to the front of the timer is spaced away
from it about 3/16" and the mounting screws were long enough to come
all the way through and press on the timer and evidently distort it to
the point where it wouldn't keep ticking. A pair of #4 flat washers on
each screw were ok to space them away from the timer and now it works
fine. Very frustrating making toast and not daring to turn away from
the thing. Hope this helps anyone thinking of just tossing one of
these.

Bill