– 4 –
A
4
5
B
1
1
2
3
6.
Installation and adjustment for the protecting pin and the belt slip-off preventing
bracket
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.
Belt
Attaching
hole
A
Attaching
hole
B
4 mm or less
Belt
4 mm or less
Adjusting position for protecting pin
Pulley
cover
Motor
pulley
3 mm or less
Adjusting position for belt slip-off preventing bracket
Belt
1) Attaching hole for the protecting pin
To attach protecting pin
1
, select either attaching
hole
A
or attaching hole
B
in the motor pulley
cover in accordance with the direction of rotation
of the sewing machine and attach the pin in the
selected hole using screw
2
and washer
3
sup-
plied with the unit.
a))
If the motor shaft rotates in direction A in the
gure on the above:
/
Attach protecting pin
1
in attaching hole
A
.
b)
If the motor shaft rotates in direction B in the
gure on the above:
/
Attach protecting pin
1
in attaching hole
B
.
2) Adjustment for the protecting pin and the belt
slip-off preventing bracket
Adjust the position of protecting pin
1
and belt
slip-off preventing bracket
4
in accordance with
the gure on the left.
a) Adjusting the protecting pin
Loosen screw
2
and adjust so that protecting
pin
1
is positioned at the location indicated
in the gure on the left.
b) Adjusting belt slip-off preventing bracket
Loosen screw
5
and adjust so that belt slip-
off preventing bracket
4
is positioned at the
location indicated in the gure on the left.
If protecting pin
1
is not properly adjusted,
it is possible that your ngers may be caught
in the clearance provided between the pulley
and the belt resulting in injury. If belt slip-off
preventing bracket
4
is not properly ad-
justed, it is possible to allow the belt to slip off
causing safety hazard.
3) After the adjustment, tighten screws
2
and
5
so as to secure protecting pin
1
and belt slip-off
preventing bracket
4
to prevent these compo-
nents to uctuate because of vibration.
4) Before starting the operation of the sewing ma-
chine, ascertain that protecting pin
1
and belt
slip-off preventing bracket
4
do not come in
contact with the pulley and the belt.
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