Sailrite Leatherwork - Page 26

47 | Sailrite�com Leatherwork
®
Guidebook | 48
53
Check the Rotational Positioning
of the Shuttle Race Guide Shaft
1� Remove the needle plate (p� 49, 17)
and feed dog (p� 55, 18)�
2� Remove the bobbin case and bobbin�
3� Rotate the balance wheel until the needle
enters the shuttle (53)�
If positioned properly, the needle is
centered in the “triangular” opening of the
Retaining Ring Cap Spring from front to
back (A)�
4� Minor adjustments can be made by loosening
the two screws (B) to slide the cap spring
forward or back�
If more movement is required, you’ll
need to adjust the rotational positioning
of the Shuttle Race Guide Shaft (p� 48)�
A
A
B
54
D
E
C
Adjust the Rotational Positioning of the Shuttle Race Guide Shaft
1� First, determine that there is no more than
1/64 inch of play in the left-right movement of
the lower shaft (C)� If there is more than 1/64
inch play, refer to p� 43�
2� Rotate the balance wheel until the needle
enters the shuttle (53)�
3� With left hand, grab the Shuttle Race Guide
Shaft (D);holdtotherightandmaintain
light pressure�
4� With right hand, loosen the clamp screw (E)
slightly� Adjust the Shuttle Race Guide Shaft
(D) so that the needle is positioned correctly
within the Retaining Ring Cap Spring (53, A)�
5� Onceyou'veconrmedcorrectpositioning,
tighten the compressible timing clamp
screw (E)� Be careful while doing this to
keep clamp (F) tight up against the casting
leg (G)�
Conrm that there is very little play in the
left-right movement of the lower shaft (C)�
F
G