Operation Manual

11
4
Functions-description of further subclasses
Needle feed and alternating top feed
4.1
4.1.1
Adjusting the stitch length
- by the knurled handle Q
4.1.2
Adjusting the alternating top feed
by displacing the traction rod in the coulisse A according to the fabric thickness.
Traction rod downwards = minimum stroke
Traction rod upwards = maximum stroke
For obtaining the maximum stroke, operate the knee switch or the pedal while sewing.
5
Maintenance
Cleaning
5.1
Rule:
In case of full-shift service clean at short intervals, possibly daily, by using a brush.
Indication:
Some materials are inclined to an increased separation of fluff,finishing agents, etc., the sediments of
which are quickly solidified particularly by the pushing and lifting movement of the feed dog, impeding
thus the machine function.
For thorough cleaning remove also the throat plate.
At longer intervals unscrew the head cover and clean the arm head.
Oil lubrication (fig. 8)
5.2
The oil points marked by an arrow as well the outside and inside joints should be lubricated additionally,
preferably when starting the work. In case of a full-shift serviceapply about daily 1 or 2 drops of oil. (At
longer intervals remove also the upper arm cover and head cover) .
Attention:
Prior to the first operation resp. after a longer standstill of the machine all marked positions of machine
must be oiled.
5.2.1
Oil qualities
Recommended is MILLCOT K 68 of ESSO or other brands with following features :
Viscosity at 40°: 65 mm
2
/s
Flash point: 212 °C
This oil can be obtained from the manufacturer:
1 litre - ref. no. 990 47 012 8 or 5 litres - ref. no. 990 47 012 9