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Adrian Tuddenham[_2_]

wrote:

This machine most of the time sews fine except that on some ocaisions
intermittently it will bunch up the thread underneath the cloth.

It is usually the top thread which bunches underneath, check the top
threading path and whether the top tension discs are working properly
(they can be assembled back-to-front on some Singer models).

When it starts to do it again, gently pull the top thread where it goes
down to the needle and see if it there is some resistance coming from
the tension discs.

--
~ Adrian Tuddenham ~
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