Bobbin Case; Hook Cover; Hook; Driver - Husqvarna 1200 Service Manual

Bobbin case

Requirements
The thread tension spring, in its whole width, must be
parallel to and press against the side of the bobbin case.
Action
Remove any fabric dressing which may have fastened
under the thread tension spring.
Damaged thread tension spring is to be exchanged.
Comments
Deposits from fabric or thread can fasten on the spindle
of the hook.
In that case the spindle should be carefully cleaned with
the brush in the accessory box.
At the same time make sure that pieces which may have
become wound around the spindle are removed.
Thread tension of the bobbin case, (P.32).
The hook cover
Requirements
The inside of the hook cover must not be damaged.
Action
Damaged hook cover must be exchanged.
Regarding the gap between the hook cover and the
driver, (P.24).
Comments
The inside of the hook cover forms a support for the
hook and the bridge above the finger of the bobbin
case supports the thread, so that the thread loop is
formed on the correct side of the needle.
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