2.5 Hook
2.5.1 Adjusting the hook shaft height
Standard checking
The distance between the throat plate support 4 and the flange
surface 1 of the hook shaft must amount to 17.7 mm.
The exact height of the hook shafts is set by means of gauge 3 (order
number 0244 001001).
Caution: Danger of injury !
Switch off the main switch.
Check and adjust the hook shaft height only with the sewing unit
switched off.
–
Remove the throat plate.
–
Remove both hooks (see chapter 2.5.7).
–
Place the gauge 3 on the throat plate support 4.
The measuring bush 2 of the gauge must reach over the hook shaft
journal.
–
Check whether the flange surface 1 of the hook shaft abuts on the
measuring bush 2 of the gauge.
Correction
–
Swing the machine head upwards (see chapter 2.1).
–
Remove the plastic stoppers 6.
–
Loosen the screws under the plastic stoppers.
–
Loosen the screws 5.
–
Push the flange surface 1 of the hook shaft under the measuring
bush 2 of the gauge. For this purpose put a screwdriver under the
flange surface 1. If the hook shaft s tands too high, push it
downward by a slight knocking on the flange surface 1.
–
Tighten the screws under the plastic stoppers 6 in this position.
–
Push the bush 7 against the hook shaft as far as it will go.
–
Tighten the screws 5 on the surfaces of bush 7.
–
Mount hook and throat plate again (see chapter 2.5.7).
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