Singer 7464 - Zigzag Bight & Stitch Balance; Zigzag Bight: Gear Meshing and Origin Positioning

- 21 -
Sec.11 Zigzag bight & stitch balance
Zigzag bight
1. Checking meshing position of gears
This procedure is needed only when disassembling and re-assembling cams.
(1) Checking
Remove face cover and turn off power switch.
Rotate gear (a) clockwise until it stops with long projection touched with shaft. Check to see if
end (c) of zigzag cam (b) aligns with center of gear (a).
(2) Disassembling and re-assembling
If meshing position of two gears is not correct, remove zigzag cam (b) from shaft and insert it into
correct position.
2. Origin point positioning of zigzag bight
(1) Checking---Meshing position of gears is to be correct.
Set machine at test mode 1. Move needle to its right position by turning hand wheel.
Turn off power switch
Turn gear (a) further clockwise and check to see carefully if it may rotate, since rotation amount is
very limited.

Turn clockwise.
Long projection
concealed inside
a
b
c