Singer 601 - Machines with U.T.T., Wiper and Back Tack; Cords and Connections Setup; Sewing Speed Specifications; Foot Treadle Operation

SETTING AND TIMING
When checking the operation of the trimmer mechanism by manual actuation of the mechanisms,
a. Be sure to turn machine pulley over toward front of machine.
b. Push thread puller action plate toward cam when take-up lever is almost at its lower dead point.
NOTE: The thread puller may strike the needle and damage itself and the needle unless the thread puller action
plate is pushed toward the cam as described above since the rotating hook shaft makes two revolutions against one
cycle of the needle bar.
Be sure to check that the machine is correctly adjusted before making adjustments to the trimmer mechanism.
Check and adjust the trimmer mechanism in the order instructed in this manual since it is interlocked with many
other area.
ADJUSTING NEEDLE STOP POSITION
When checking and making adjustment of needle stop positions, be sure to disconnect the trimmer and wiper
connectors from the control box.
Needle Stop Positions
a. Lower Needle Position
The lower needle position is approximately 3mm (.118”) above the lower dead point of the needle on its upward
stroke. This 1st position does not call for absolute accuracy and minor adjustments may be made if the
threads cannot be properly trimmed due to skip stitching.
b. Upper Needle Position
The upper needle position of “BD, BE, GD and GF” varieties 591D200/210/215/240, 591C200/210/240 and
601D100 machines is approximately 1 mm (.039”) before the take-up lever reaches its upper dead point and the
upper needle position of “BD, BF. GD and GF” varieties 591D300/310/315 and 591D318BD/BF machines is
when the take-up lever is at its upper dead point.