Beisler 100-54 - Manual (Page 22)

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5 Required cleanings
To achieve the value and function of the machine, we recommend to keep it
always clean and free of spare materials and waste.
Blow off threats and cloth rests daily from the machine using the air
pistol.Below the air pistol you see a supply bottle for the oil needed in the
sewing head.
Hint
The sewing head must be cleaned regularly. Please see the Operating
Instructions of the sewing head for further information.