4.4 Hook lubrication
Rule:
The lubricator’s regulator screw (1) should project approx. 1mmout of
the lubricator.
–
The oil quantity necessary for a safe lubrication of the hook is set
at the factory. A modification may only be needed in exceptional
cases.
The required oil quantity depends on the material to be sewn and
the thread used.
Hold a piece of paper (blotting paper) next to the hook, sew a
material for approx. 1 m and check if oil is spun off onto the paper.
–
Increase the oil quantity = turn the screw counter-clockwise, but
not any further than 1.0 mm above the surface of the lubricating
fitting.
–
Reduce the oil quantity = turn the screw clockwise, but not any
further than 0.3 mm below the surface of the lubricating fitting.
Caution: Risk of injury!
Turnthemainswitchoff.
Proceed with the setting of the hook lubrication only with the sewing
machine switched off.
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