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8
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13) Lubrication
(1) Check the oil level at the sight glass 1 every week. If the oil is not
enough, remove oil-filling screw 2 and pour in oil. Check oil level
at sight glass 2. The oil level must be between “EMPTY” and
“FULL”. Replace oil-filling screw 2. After running for 500 hours
since buying the new sewing machine, the oil must be changed.
Then change the oil every two years.
(2) 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). The hook is to have positive lubrication with the least possible amount of oil. Let the sewing
machine run approx.2 minutes. And run in intervals. Hold a piece of paper next to the hook and check if
sufficient oil is spun oil onto the paper. Remove cover plate 2. Loosen screw 3 until the tube 1 no 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 a 1/8 turn farther. The hook lubrication is preset. Attach cover plate 2 again.
Setting the hook lubrication with screw 3.
(3) Lubricating wicks and felt (see the picture of above)
a. The wick 1 leading from the oil sump to the oscillating crank 4 must be fixed between the groove 2 in the
arm and the spring 3 of the recirculation wick.
From the library of: Superior Sewing Machine & Supply LLC
