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4.
Remove the two screws that hold the retaining finger in place.
5. Loosen the set screws at the top and bottom of the head that secure the reciprocator guide shaft.
6. Remove the reciprocator guide shaft by sliding it up and through the hole at the top of the upper
arm casting.
7. Remove the reciprocator assembly from the connecting rod by pulling it straight out of the upper
arm casting.
•
Note: When any component in the reciprocator assembly requires replacement, it is strongly
recommended replace the entire reciprocator assembly.
8. Install the reciprocator guide shaft as follows:
a. Attach the connecting rod to the reciprocator.
b. Insert the guide shaft down through the hole at the top of the upper arm casting and through
the presser foot guide.
c. Insert the guide shaft through the reciprocator assembly.
d. Insert the guide shaft down through the ball bearing, the bushing below the ball bearing, and
the bottom felt.
9.
Turn the reciprocator guide shaft until the flat position at the top of the shaft faces towards the
front of the upper arm casting.
10. Pull the reciprocator guide shaft down until it is positioned below the upper surface at the top of
the upper arm casting by 0.5 to 1.0mm.
11. Position the z-shaft at top dead center, (to allow the felt to capture the oil in the next step) by
turning the machine on without the software open. The machine will automatically go to top
dead center (assuming that the z-shaft drive is properly timed). If the software is open, close it
before performing this step.
12. Add approximately 25 drops of machine oil into the oiling hole located just above the reciprocator
assembly while the reciprocator is in the upper position.
13. Tighten the set screws on the top and bottom of the head to secure the reciprocator guide shaft
and assembly.
14. Install the left and right upper arm covers.
15. Reinstall the needlecase.
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