Setting The Oil Quantity For The Hook - Duerkopp Adler 281 Service Instructions Manual

10.1 Setting the oil quantity for the hook

1
The hook lubrication is insured by the oil wick inside a silicone rubber
hose, going from the hook oil reservoir to the spray cone on the back of
the hook.
The oil quantity can be reduced through the adjustment screw 1.
By pressing the hose, the adjustment screw throttles the oil quantity for
the hook.
Rule
Put a piece of paper instead of the throat plate above the throat plate
cutout, and sew with the machine with the maximum speed for 15 sec.
The paper should have a fine oil sprayed on it.
Correction
–
Remove the throat plate.
–
Remove the feed dog.
–
Take out the bobbin case.
–
Turn the adjustment screw 1.
Clockwise = less oil for the hook
Counter-clockwise = more oil for the hook
–
Fix the throat plate, the feed dog and the bobbin case again.
Please note:
The reduction of the desired oil flow-rate does not happen instantly
after the turning of the adjustment screw, this is because the residual
oil in the wick between the throttle and the hook needs to be used up
first.
A verification makes only sense if carried out a couple of hours later.
1
GB
33