Specifications

Replacing Reciprocator / Needle Bar Guide Shaft
1. Remove the needle case as described previously in this manual.
2. Loosen the set screw from the left side of the head that secures the needle bar
guide shaft (see Figure 3-30).
3. Remove the retaining clip from the needle bar guide shaft (see Figure 3-31).
4. Slide the needle bar guide shaft up through the hole in the top of the head to
remove it (see Figure 3-31).
Note: If you are only replacing the needle bar guide shaft, proceed to step 8.
5. Remove the reciprocator from the connecting rod by pulling it straight out of the
head (see Figure 3-30). Discard the reciprocator.
6. On the new reciprocator place a drop of machine oil on the reciprocator
connecting stud (located on the lower back side of the reciprocator).
7. Install the new reciprocator into the head (see Figures 3-30 & 3-31). Make sure it
is oriented properly and insert the connecting stud onto the connecting rod.
8. Add two drops of machine oil onto the needle bar guide shaft (or new guide
shaft if replacing).
Guide Shaft flat
FRONT VIEW
Set Screw in left side
Connecting Rod
(behind the
guide shaft)
Needle Bar
Guide Shaft
Reciprocator
groove in guide shaft
for Retaining Clip
Figure 3 - 30
Replacing Reciprocator / Needle Bar Guide Shaft 3 - 37
110305-01, Rev A 3. Mechanical Disassembly