PAGE 23
Trouble Probable Cause Correction
If Machine
Binds or
Locks
Thread or lint in race.
Likely machine was run
without sewing fabric.
Understandably, many users think their
machines have broken down the first time
they experience a clogged shuttle, or hook,
as sometimes described. However, such
jamming is easily corrected.
The bobbin case, shuttle race cover and shuttle (hook) must all be removed from the
shuttle race, which is built into the machine.
Move the needle and the take-up lever to their highest points. Next, lift and tip the
machine backward. It will remain at an upright angle resting on its cabinet or base
hinges — making the parts underneath the bedplate readily accessible. Lift the
fingernail-latch on the bobbin case and remove it from the machine. Push the top ends
of both of the race clamps outward (in opposite directions). Now the shuttle race cover
can be removed — usually dropping into your hands.
Finger-grip the center pin of the shuttle (hook) and remove it from the machine.
Thoroughly clean the shuttle race (in the machine), the race cover, and the shuttle
itself. If some scraping is necessary to get every bit of thread and lint removed from
edges or corners, be sure to cover the screw driver with a soft cloth. Before
reassembling all parts into the machine, put one drop of oil on a finger-tip then run the
finger tip around the outer edge of shuttle (hook). Avoid excessive oil on shuttle rim.
Any more than a film of oil may cause some oil to run into the bobbin case; soaking
and discoloring the bobbin thread.
When lowering the machine into its sewing position, grasp it with both hands ABOVE
the bedplate. Thus, you will not be risking scraped or bruised fingers should the
machine slip and drop too fast and hard.
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