12.2 Hook Lubrication
Caution Risk of Injury !
Turnthemainswitchoff.
Set the hook lubrication only with the sewing machine turned off.
Conduct function tests with the machine running only with the utmost
caution.
–
The hook should be lubricated with a small quantity of oil.
–
Let the sewing machine run approx. 2 minutes.
–
Let the sewing machine run in intervals.
Hold a piece of paper next to the hook and check if sufficient oil is
spun off onto the paper.
–
Remove cover plate 2.
–
Loosen screw 3 until the tube 1 not longer moves.
This is the case when the tube is in the center of the drilled hole.
–
Turn screw 3 in until the tube movement just starts and then an 1/8
turn farther.
The hook lubrication is preset.
–
Attach cover plate 2 again.
–
Setting the hook lubrication with screw 3.
Turn screw 3 in = Reduce the oil quantity
Turn screw 3 out = Increase the oil quantity
ATTENTION !
The setting range between the minimum and maximum oil quantity
is only 1/4 turn.
When screw 3 is turned in too far, then there is a danger that the
tube 1 will be pressed together and the oil flow interrupted.
Note
In order that a positive lubrication is assured during the running-in
period, a relatively large oil quantity is set at the factory.
This is to be reduced to the necessary quantity after the running-in
period.
Clogs in the oil feed to the hook run can be eliminated by a jet of air.
–
Turn out screw 4.
–
Eliminate the clog with a jet of air.
–
Turn in screw 4 tight again.
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