10.Trial running
9.Lubrication (Fig.6)
11.Installing the needle (Fig.7)
7
3
6
The machine must be oiled at the places with red
mark after the work is over every day. After
lubrication, please run 1 or 2 minutes.
.
Trial running is required when new machine is put
into use or use again after storing quite long time.
First uninstall the rubber plug above the machine
head and face plate and oiled by hand, then lift the
presser foot and run the machine at a low speed of
300~400s.p.m for 30 minutes, then increase the
speed gradually. After one month, please choose the
suitalble speed according to the sewing work. .
Turn the balance wheel to lift the needle bar to its
highest position, loosen the needle set screw, and
make the needle groove to the left side of the
operator, then fully insert the needle shank until to
the bottom of the needle bar socket, tighten the set
screw. .
.
Note: Insufficient insertion (Fig. b) or the needle
groove facing to the operator (Fig.c) is incorrect.
Clearance
The groove
left ward
a
b
c
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