Specifications

6. If the under thread presser does not provide the required action, replace it and
check using steps 2 to 4 again.
7. After you are satisfied with the under thread presser action, re-attach the
connecting link (see Figure 4-12).
Adjustable Fixed Knife Adjustment
After replacing the adjustable fixed knife (or movable knife) per the instructions
earlier in this chapter it will need to be properly adjusted. Refer to following steps in
performing this adjustment.
Ink Wipeoff Test
1. With the machine turned off, disconnect the connecting link from the movable
knife drive arm by lifting it from the front pin (see Figure 4-12).
2. Pull the movable knife forward with a small hex wrench hooked behind it.
3. With a black marking pen, mark the areas of the movable knife as shown in the
left illustration of Figure 4-16.
4. Push the movable knife back under the adjustable fixed knife to simulate the
thread cutting action.
5. Again pull the knife forward and inspect where the marking pen ink has been
wiped off. Refer to the remaining three illustrations in Figure 4-16 to determine
if the adjustable fixed knife needs adjustment.
ink wipeoff in
this area . . .
Adjustable Fixed
Knife tilted left
ink wipeoff in this
area . . .
Adjustable Fixed
Knife tilted right
ink wipeoff in
these areas . . .
Adjustable Fixed
Knife OK
Apply Ink in these
areas of the
Movable Knife
Figure 4 - 16 Ink Wipeoff Test
Adjustable Fixed Knife Adjustment 4 - 19
110279-01, Rev B 4. Trimmer Maintenance