78
44. Removing and fitting the sewing hook
Removal:
z Remove the needle.
z Unscrew the presser foot.
z Remove the bobbin case.
z Remove the bobbin case position finger.
z Remove the three screws with springs from behind (fig. 100).
z Remove the bobbin case base with sewing hook gib (fig. 101).
z Turn the sewing hook gib to the left or to the right out of the bobbin case base (fig. 102).
z Clean the sewing hook, bobbin case base and hook gib.
Fitting:
z Turn the handwheel until the opening of the sewing hook faces to the left (fig. 103).
z Turn the sewing hook gib to the left into the bobbin case base (fig. 104).
z Insert the bobbin case base complete with sewing hook gib into the sewing hook (fig. 105).
z Secure the sewing hook gib from behind with three screws with springs (fig. 100).
z Screw on and adjust the bobbin case position finger.
45. Cleaning and oiling the machine
Note:
The machine is equipped with sintered bearings and components and is therefore maintenance free for
the user.
Only the sewing hook should be lubricated once in a while with normal sewing machine oil.
After repair work, the service engineer should oil the machine with BP Energol HLP 46 or HLP 80 and the
sewing hook with normal sewing machine oil.
Sintered bearings and components must not be cleaned with gasoline, petroleum, kerosene, thinners,
trichlorethylene etc.
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