SINGER UT-1 - Manual (Page 5)

1-2 INSTALLMENT AND ADJUSTMENT OF THE SYNCHRONIZER :
©SET SCREW
(§)SEP..
^ SCREW
TOPPER
(pSYNCH^2^-
©5ET SCREW
gSET scre 'S^ pulley
1. INSTALL SYNCHRONIZER©INTO BELT PULLEYQ)AND TIGHTEN THE
SET SCREW© LIGHTLY.
2. INSERT ONE END OF STOPPER®INTO THE HOLE ON THE MACHINE
AND INSERT THE OTHER END OF STOPPER INTO THE GROOVE OF
SYNCHRONIZER AND THEN TIGHTEN THE SET SCREW®
3. CONNECT THE POWER OF MOTOR ( PLEASE DO NOT CONNECT THE
ELECTRIC POWER OF TRIMMING KNIFE YET)
4. PUSH THE PEDAL AND START THE SEWING MACHINE AND THEN
PUSH THE PEDAL BACKWARD TO STOP THE MACHINE. BY THIS
TIME, THE SEWING MACHINE WILL STOP AT CERTAIN POSITION
AUTOMATICALLY.
5. OBSERVE THE "P" SET MARK FROM HANDWHEEL AND WHEN THE
MACHINE STOPPED. THE "P" SET MARK FROM HANDWHEEL SHOULD
MATCH THE SET MARK ON THE SEWING MACHINE AND AT THIS
MOMENT, THE NEEDLE SHOULD REACH ITS UPPERMOST DEAD POINT.
WHILE ADJUSTING, LOOSEN THE SET SCREW® TURNING THE BELT
PULLEY® THEN TIGHTEN THE SET SCREW LIGHTLY, REPEAT SUCH
PRECEDURE SEVERAL TIMES TO MAKE SURE THE "P’ SET MARK
FROM HANDWHEEL CAN MATCH EVEN WITH THE SET MARK OF THE
MACHINE BODY.
6. AFTER TIGHTEN THE SET SCREW, PLEASE DOUBLE CHECK THE
RELATED POSITION ONCE MORE TO MAKE SURE THESE TWO SET
MARKS ARE MATCHING EVENLY.