Instruction manual

2.7.3 Timing of opening

Caution: Risk of injury!

Tur n off the main switch.

Check and set the bobbin case opener only when the machine is

switched off.

Standard checking

After having taken up the loop, when the hook tip 2 is below the

bobbin case opener (handwheel position 350°) the sewing thread

should be able to slip through unimpededly between the bobbin case

opening finger 3 and the bobbin case 1.

–

Tur n the handwheel to position “350°”.

–

Check whether the bobbin case opening finger has opened wide

enough for the sewing thread to be pulled through unimpededly.

Correction

–

Remove the plug 6 from off the hook housing 4.

–

Loosen the screw 7 in the control cam 8 using the Allen key 5.

–

Twist the control cam 8.

–

Tighten screw 7.

–

Reinsert the plug 6.

321

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