Specifications

8. Place the UTC assembly under the needle plate support bracket as shown in
Figure 4-22 and install the 2 UTC assembly mounting screws.
9. Perform the UTC adjustments.
UTC Adjustments
It is very important that you follow these instructions any time the rotary hook or
UTC is loosened or moved.
Please follow the instructions in the order they occur.
Note: The procedures in this section require the following special tools:
1) a small straight blade screw driver with a thin blade, and
2) the Melco UTC combination gauge part number 009027-01. (This
tool is located in the Melco tool kit that came with the machine.)
Rotary Hook Retaining Finger Positioning
1. Attach the UTC assembly as described earlier in this procedure.
2. With the machine ON and ready for operation, press to switch to the
Service/Maintenance Menu. Then press at the peripheral keyboard until
the LCD displays HEAD TIMING MENU.
3. Press and the LCD displays HEAD TIMING ON.
UTC assembly
and rotary hook
retaining finger
needle plate
support
bracket
UTC assembly
mounting screws
Figure 4 - 22
Rotary Hook Retaining Finger Positioning 4 - 29
110291-01, Rev D 4. Trimmer Maintenance