Lewis 150-2 - Page 17

16
Adjustment 7
Means for adjusting the looper in and out.
Before setting the looper, the looper carrier assembly
must be in accordance with instructions for Figure 5 and Figure
6 and the needle setting must be as described in adjustments 1,
2 and 3.
The looper is and can be timed at only one place.
TIMING THE LOOPER
Timing the looper is relative to the needle. Loosen
the two set screws on the looper crank. To time the looper,
turn the machine over by the hand wheel by turning the hand
wheel towards the rear of the machine until the screw driver
slot in the needle eccentric ball stud is straight up and down
with the two dots at the bottom - See Figure 1, adjustment 1.
There is a "V" notch cut in the main shaft of the ma-
chine which will be at the top of the shaft.
There is a timing mark on the looper crank - See Fig-
ure 4.
Turn the looper crank until the timing mark on the
crank coincides with the left hand edge of the
11
V" on the main
shaft. This timing mark will not vary more than 1/32" plus or
minus relative to the edge of the "V".
Clamp the looper crank to the main shaft of the ma-
chine with the two set screws.
ADJUSTING AND SETTING THE LOOPER
To secure the correct adjustment of the looper, the
following steps should be taken and in the same sequence as
here given:
The looper is first adjusted as the looper is taking the
loop from the needle.
The position for the long prong of the looper is to have
the point of this prong 3/32" from the inner end of the needle
eye and the point of the long prong just clearing the scarf of the
needle.
From the library of: Superior Sewing Machine & Supply LLC