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10.11) ADJUSTMENT OF JUMP MOTOR
When the jump motor is replaced or the operation of the jump motor is poor, adjust the location of the jump
motor as in the figure.
10.11.1) Adjustment of the Pause Position (in case
of adjusting the motor base)
①
Loosen the tightening screws (3EA) for the
motor base, and tightly fasten the tightening
screws at the place where the controller's jump
driving part is 0.3mm away from the cross-
section of the jump crank roller.
②
If the jump motor is located too far from the
controller, the jump of the needle bar might not
be conducted properly. If it is too close, it may
cause noises during operation.
Jump Crank Roller
Controller
Tightening Screw for
Motor Base
0.3mm
10.11.2) Adjustment of Location of Manual Jump
Switch
①
If the head is desired to be turned off, the
manual jump clutch lever can be used. If the
jump operation does not take place properly,
make sure to check the assembly condition of
the manual jump clutch.
②
Make sure to check whether the center of the
motor shaft is in parallel with the center of the
manual clutch pin and the center of the
punched mark (see the figure). If not, loosen
the tightening screw for the manual jump
clutch, while the jump crank roller contacts the
stopper, and make it contact the punched mark.
Then fasten the screw.
③
When the manual jump clutch lever is pulled
forward, make sure to check whether the
manual jump clutch closely contacts the
stopper. Otherwise, adjust the body stopper to
make close contact.
Manual Clutch Base
Punched
Mark
Stopper
Manual
Jump Clutch
A Side
Stopper
Center of Motor
Shaft
Tightening Screw for
Manual Jump Clutch
Manual Jump
Clutch Lever
1) Use the long-term head on/off switch to operate the manual jump clutch lever if the head
is not going to be used for a long time.
2) If the manual jump clutch lever does not closely contact the A side of the manual jump
clutch, noises might occur when jumping is executed electrically.
CAUTION