2.15.1 Hook lubrication
Caution: Danger of injury !
Switch off main switch.
Adjust the hook lubrication only when the sewing machine is switched
off.
Make functional test with utmost caution when the sewing machine is
running.
Standard checking
The necessary oil quantity for the correct lubrication of the hook has
been adjusted by the manufacturer. It has to be altered in exceptional
cases only.
The required oil quantity is dependent on the s ewing threads to be
processed and on the fabric.
When sewing a course of approx. 1 m with the fabric and the sewing
threads to be processed a piece of paper - preferably blotting paper -
held below the hook must be slightly sprayed w ith oil.
Correction
–
Adjust oil quantity at the regulating screw 1.
Turn screw counter-clockwise = increase oil quantity
Turn screws in clockwise direction = reduce oil quantity
ATTENTION !
The adjusted oil quantity changes not before an operating time of some
minutes.
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