Oiling of motor: use only high grade sewing machine oil. Apply
one or two drops of this oil into each bearing oil hole every two or
three months. Do not use vegetable oils. Before oiling, clean lint
from oil holes with a pin.
D. Motor runs, but does not pull machine.
Belt slips. This will occur if:
belt between motor pulley and balance wheel is excessively
stretched;
motor pulley is too close to balance wheel;
motor bracket screws, or motor fastening screws, are loose;
there is oil between belt and motor pulley or between belt
and balance wheel.
Replace worn belt; adjust motor bracket; tighten all motor
mounting screws; wipe oil thoroughly from belt, balance wheel
and motor pulley.
motor pulley too loose on motor shaft. Tighten screw in motor
pulley.
Motor is weak.
Some armature wires are broken. Tampering by inexperienced
persons may cause this defect. Use the same (original) motor fas-
tening screws. Avoid longer screws. Longer screws may
damage the wiring in the motor.
Motor gets too hot.
Belt between motor pulley and balance wheel is too tight and
overloads the motor. Shift motor bracket until belt has just
enough tension to pull the machine; tighten bracket screws.
Lack of lubrication. Lubricate both motor bearings as advised
above.
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