239.283
Figure 4-2.—Rear view of Model 225 machine showing oiling points.
W 155 sewing machine. Do not use too much oil;
usually 1 drop of oil at each oiling point is sufficient.
An excessive amount of oil will soil the project being
sewn. We recommend a 10W mineral-base oil. (Use
of castor-base oil is no longer required.) If this type
of oil is not available through normal supply
channels, use the mineral oil or Singer Type B or D.
TIMING THE 111 W 155 MACHINE
Timing is the most important step when you are
working on any machine. As you read through the
following timing and adjustment sequence, you may
find that it has changed from steps you are
accustomed to using. This timing and adjustment
section is presented as if you are taking your
machine completely apart and reassembling it.
1. Timing the arm shaft with the hook drive
shaft
To perform this timing step, you must tilt the sewing
machine back on its hinges. Turn the balance wheel
toward the operator until the thread take-up lever reaches
its highest point. You can do this step by placing the
fingers of your left hand on top of the thread take-up
lever and turning the balance wheel with your right hand.
You should be able to feel the high point of
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