AMF S-4000 - Looper Position

S-4000
1-57
Revised 01/2005
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Timing
mark
ADJUSTMENTS
Looper Position
Note: First and second loopers will be referred to as illustrated in Figure 3. Front and back needle
strokes will be referred to as illustrated in Figure 4.
Note: Before performing the looper adjustments, ensure the needle is straight and inserted fully
upward into the needle bar. Ensure the stitch bite is centered over the throat plate, page 1-41.
Ensure the machine is in the home position.
Verify the needle bar is in the top dead center position and the looper drive cam is rotationally
positioned with the timing mark illustrated, towards the outside of the bedplate and the immediate
end of the shaft.
Note: If the timing mark is not on the outside, the cam is assembled in reverse and must be removed
and installed correctly. Do not confuse the through hole with the timing mark.
Second
looper
First
looper