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5-2-2021
APQS.com
General Maintenance
If the hook pint is hitting the needle too hard (bending the needle), you
will need to move the hook backward (away from the needle) to the
point where it just slightly deflects the needle. With the screw tightened
in the previous step, the hook will not move easily on the shaft. Using
the handle of your screwdriver, tap the post inside the bobbin basket to
“nudge” it back.
This process can go back and forth a few times until you get the
deflection just right. Don’t get discouraged; it does take a little time! The
precision is important to the quality of your stitches and successful
sewing.
Once the deflection is achieved, and you have checked that the rotation has not changed from Step 2, you may
tighten the hook set screws a little at a time. Tighten one hook set screw slightly, then rotate the fly wheel all the
way around to check the hook clearance and deflection again. Tighten the next set screw slightly, and check the
settings again. Continue rotating and tightening each screw until they all feel very snug – wait to do the final ‘super’
tight on the screws until you have completed the next step and turned the machine on.
NOTE: For Style “L” Hook Assemblies, be very careful when
working with the screw on the flat side of the hook assembly.
It is not as strong as the other 2 screws are, so you will not be
able to tighten it as tight as the other 2!
Step 4: Hook Retaining Finger Position
The last step in the timing process is checking the hook retaining finger
position. The hook-retaining finger keeps the bobbin basket from spinning
inside the hook assembly. You will see a notch in the top part of the bobbin
basket—the front part of the hook-retaining finger fits into this notch. The
hook-retaining finger should only be approximately 1/3 of the way into the
notch area of the bobbin basket. Most of the notch needs to remain
unobstructed; this allows the top thread to pass through the gap between the
hook retaining finger and the notch in the bobbin basket. The hook at the end
of the finger should be pointing up when installed.
Use screwdriver handle to tap on
center shaft to move hook back and
lessen deflection
DO NOT OVER-TIGHTEN THIS
SCREW!!
Hook Finger 1/3 into notch in
bobbin basket
Содержание Lenni
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