– 3 –
5. INSTALLING THE SYNCHRONIZER
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
(Installation procedure)
1) Fix synchronizer flange
❶
on the end of the
main shaft.
2) Fix the synchronizer on synchronizer flange
❶
.
3) Fix synchronizer support plate
❷
with setscrew
❸
so as to prevent the synchronizer from rotat-
ing.
Be sure to remove the connector for the
sewing machine for the sake of safety be-
fore checking the upper and lower positions
of the synchronizer.
❶
❷
❸
Synchronizer
4. ADJUSTING THE BELT TENSION
Adjust the belt tension with the height of the motor
so that the belt sags 15 mm when the center of V
belt is applied with a 9.8 N load.
15mm
Motor pulley
Handwheel
9.8N
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
