Maintenance
Service Instructions M-TYPE DELTA - 00.0 - 12/2019 195
20.2.2 Lubricating the hook
The approved oil quantity for hook lubrication is a factory specification.
Proper setting
1. Hold a piece of blotting paper next to the hook.
2. Allow the machine to run without thread and sewing material for
10 seconds with the sewing feet lifted and at a high speed.
The blotting paper will show a thin strip of oil when sewing is
complete.
Fig. 134: Lubricating the hook
To lubricate the hook:
1. Turn the screw (1):
• release more oil: Turn screw (1) counterclockwise
• release less oil: Turn screw (1) clockwise
Important
The released amount of oil does not change until the operating time has
run a few minutes. Sew for several minutes before you check the setting
again.
CAUTION
Risk of injury from sharp and moving parts!
Puncture or crushing possible.
Switch off the machine before lubricating the hook.
Carry out function tests with utmost caution when
the sewing machine is switched on.
(1) - Screw
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