2.10.4 Adjusting the hook lubrication
Caution: Danger of bodily injuries !
Do not introduce your hands into the area of the moving machine parts.
Rule and control
The hook should be lubricated safely with the lowest possible oil
quantity. (This will also reduce the oil consumption)
–
Lower the sewing machine head by the function "
Lifting/lowering
the machine hea
d".
–
Select the "
speed
" function.
Enter by the numerical keys "4000" and confirm by the "
RETURN
"
key
–
Remove the fabric rest.
–
Press the key "
F2
".
Allow the sewing machine operate for about 1 minute.
–
Press the key "
F3
".
–
Hold a piece of paper beside the hook.
–
Let the machine run at intervals of about 15 seconds by pressing
the keys "
F2
" and "
F3
".
The adjustment is correct if enough oil is splashed onto the paper.
Correction
–
Remove the bobbin case and the covering sheet 3, for being able
to recognise the position of the small oil pipe.
–
By means of a socket spanner, having an opening of 1.5 mm, turn
back the screw 1 until the small oil pipe 2 does no longer move.
Normally, said pipe will not move when it stands in the middle of
the bore-hole.
–
Tighten the screw 1 until the pipe begins to move.
–
Turn the screw again by 1/8 revolution.
The adjusted oil quantity will decrease with the increasing distance
of the pipe from the middle of the bore-hole.
–
By means of a socket spanner, turn the screw 1clockwise for
reducing the oil quantity.
Turn the screw 1 counter-clockwise for increasing the oil quantity.
Please note the following:
The adjustment range between the maximum and the minimum oil
quantity corresponds to a quarter (1/4) revolution of the screw..
ATTENTION !
The small oil pipe will be squeezed if the screw 1 is turned-in
excessively.
Note
For ensuring a safe lubrication of the machine during its run-in time,
the factory-set oil quantity is rather high. Therefore, following the
run-in time, check and, if required control the oil quantity.
1
2
3
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