Singer 601 - Page 11

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To adjsut the pressure, loosen set screws S ;i:' : T holding the eccentric stud U and thread puller action lever V
and move pressure adjusting block W as required turning the eccentric stud. Tighten set screws S and T.
Fig. 75
SETTING AND TIMING THREAD PULLER ACTION CAM
The clearance between the highest point of thread puller action cam X and follower portion of thread puller
action plate Y should be 0.5mm (.020”) (Fig. 76)
To make this adjustment, follow the adjustment procedure noted hereunder.
1. Loosen the two set screws Z holding the thread puller action cam X and the two tension release action cam set
screws A2.
2. Turn thread puller action cam X until its highest point is located opposite the follower on thread puller action
plate and slide thread puller action cam X to the left or right as required to provide the 0.5mm (.020”) clearance
specified above, then temporarily tighten the set screws Z.
3. Push tension release action cam B2 lightly against the right end of thread puller action cam X and temporarily
tighten the set screws A2.
4. F irmly tighten the set screws Z and A2 when thread puller action cam has been correctly timed as instructed in
the following paragraph.
(FOR DROP FEED MACHINE)
(FOR COMPOUND FEED MACHINE)