Machine Maintenance; Cleaning; Oiling - Singer S14-77 Manuel D'instruction

MACHINE MAINTENANCE

An overlock requires more frequent maintenance than a
conventional sewing machine for two reasons:
• A lot of lint is produced when the cutters are cutting the
fabric.
• An overlock runs at a very high speed and needs to be oiled
frequently to lubricate the internal working parts.

Cleaning

Turn off the main power switch and unplug the
machine.
Open the front cover and remove all the lint using a lint brush.

Oiling

Turn off the main power switch and unplug the machine.
To keep the machine running smoothly and quietly the moving
parts, pointed out in the picture, must be lubricated often. We
recommend lubricating after every 24 hours of use.
Use sewing machine oil. Do not use any other oil, it could
damage the machine.
Wipe the machine surface to remove all excess oil before
sewing.
Replacing the Lower Cutter
Turn off the main power switch and unplug the
machine.
The stationary lower cutter should be changed when it
becomes blunt. Change it by following the below instructions.
If you are having any difficulties, consult your service agent to
make the necessary adjustments.
• Turn off the upper cutter (A). Open the front cover.
• Loosen the lower cutter set screw (B) and remove the
stationary cutter (C).
• Place a new lower cutter in the groove of the lower cutter
holder. The blade of the lower cutter shall be flush with the
stitch plate.
• Tighten the lower cutter set screw (B).
• Turn the upper cutter (D) on again.
• Turn the hand wheel so the needles are in their lowest
position.
Machine Maintenance – 23
English