Sec. 4 Needle Bar Height - Singer 7422 Service Manual

Sec. 4 Needle bar height
Note: Make this checking before checking "Needle timing to shuttle"
Checking:
1. Remove needle plate and bobbin case.
Select straight stitch (center needle position).
Raise needle to its highest position by turning hand wheel.
2. Check to see if distance from needle point to the surface of needle plate is as
illustrated below.
Highest position
of Needle
Adjustment:
1. Remove face cover.
2. Loosen screw (A) of needle bar clamp using hex screw driver
and adjust the height of needle bar.
3. Check to see if needle threader operates correctly and there is not interference in vertical
movement of needle bar.
Tighten screw (A) securely after adjustment.
Needle position
at center
15.5 to 16 mm from
the surface of needle plate
A
B
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