5.1 Regulation of hook lubrication
IMPORTANT !
The oil quantity is pre-set at a relatively high level in order
to ensure adequate lubrication during running-in.
This setting should be checked and corrected after
running-in (approx. 50 hours).
See also or service manual.
Caution Risk of Injury !
Turn the main switch off.
Set the hook lubrication only with the sewing machine
turned off.
Conduct function tests with the machine running only with
the greatest possible caution.
The hook is to have positive lubrication with the least possible amount 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 ¼ 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.
12
3
1
2
3