– 31 –
Adjustment procedures
Results of Improper adjustment
1. Bring the needle bar
❹
to the lower dead point.
2. Loosen the setscrew
❶
.
3. Adjust a position of the needle bar lubricating pin
❷
so that a
clearance provided between the needle bar lubricating pin
❷
and
the needle bar driving pin
❸
should be 0.1 to 0.3 mm.
* Adjustment of 0.1 to 0.3 mm is convenient to use a thickness
gauge or the like.
(Caution) A clearance should be 0.1 to 0.3 mm at an interme-
diate position of the needle bar stroke.
4. Tighten the setscrew
❶
.
[60H]
1. Bring the needle bar
❹
to the lower dead point.
2. Loosen the setscrew
❶
.
3. Adjust a position of the needle bar lubricating pin
❷
so that a
clearance provided between the needle bar lubricating pin
❷
and
the setscrew
❻
of needle bar driving arm
❺
should be 0.1 to 0.2
mm.
4. Tighten the setscrew
❶
.
o
If the clearance provided be-
tween the needle bar lubricating
pin
❷
and the needle bar driving
pin
❸
is too small, the related
components will come in contact
with each other.
o
If the clearance provided be-
tween the needle bar lubricating
pin
❷
and the needle bar driving
pin
❸
is too large, oil will not be
fed properly resulting in seizure.
