Installing The V-Belt - Brother LH4-B800E Instruction Manual

4. INSTALLATION

4-12. Installing the V-belt

(2)
(1)
(4)
(3)
(2)
(1)
20
2081Q
2082Q
(3)
10 – 14 mm
(5)
(1)
2083Q
1. Remove the screw (1), and then remove the
motor belt cover (2).
(1)
2. Gently tilt back the machine head, and then place
the V-belt (3) into the V grooves in the machine
head pulley and the motor pulley.
3. Turn the two nuts (4) to adjust so that there is 10 -
14 mm of deflection in the V-belt (3) when it is
pressed at the midway point with a force of 5 N.
NOTE:
If the V-belt tension is too loose, or if the V-belt is
stretched, the following problems could occur.
a. The stopping position may shift,
b. The needle bar may drift when the machine
stops,
c. An extra stitch may be sewing when the
machine stops,
d. An abnormal noise may be heard due to V-belt
slipping, and
e. The V-belt may become too loose and contact
with the cover.
If any such problems occur, adjust by following the
procedure described above.
4. Secure the motor belt cover (2) and the auxiliary
motor belt cover (5) with the four screws (1) as
shown in the illustration so that they do not touch
the V-belt (3).
HE-8000