6
20 ~30
A
B
CDEFG
10~12mm
3
7
8
B
A
1.7 Connecting the clutch lever to the pedal (Fig. 6)
A. The optimum tilt angle of pedal against floor is
approx. 20 30 . .
B. Adjust the clutch of motor so that the clutch lever
C and draw bar B run in line. .
C. The machine hand wheel should rotate
counter-clockwise for normal sewing when view
from opposite side of balance wheel. The motor
should rotate in the same direction. The rotation can
be reversed by reversing the plug of motor (turn
over 180 ) .
D. Adjust the tension of V-belt F by moving the
motor up and down. The proper tension of V-belt is
a slack of 10 12mm when the belt is depressed at
the belt span by finger. .
2. Operation preparation and notice before running
2.1 Clearing the machine
Before the head is packed, all of the parts of the
machine are coated with anti-rust grease, meanwhile
the grease can harden and the dust can cover the
machine, surface during long time storage and
shipment, so, the dust and grease must be cleared by
clean cloth with gasoline. .
2.2 Examination
Although every machine is conformed by strict
inspection and test before delivery, the parts of the
machine may be loose and deformed after long
distance transportation with jolt. A thorough
examination must be performed. Turn the balance
wheel slightly by hand to check if there is running
obstruction, parts collision, uneven resistance and
abnormal noise. If any of these exist, adjustment
must be made accordingly before running. .
2.3 Notice before running
A. Oiling (Fig. 7)
Oil amount should be filled according to the marks
in the oil pan, Mark A refers to the highest of oil
amount; Mark B refers to the lowest, be careful that
the oil amount should not be lower than Mark B,
otherwise the machine parts can not be fed with oil
and cause overheat and collision. .
Please be sure to use machine oil 18# or HJ-7.