Installing The Treadle - Brother LH4-B800E Instruction Manual

4. INSTALLATION

4-14. Installing the treadle

(2)
(3)
(1)
(4)
(3)
(1)
(2)
a b c
22
2087Q
Fig. A Fig. B
(6)
(5)
(6)
2088Q
Install the connecting rod (1) to the treadle lever (2)
with the nut (3).
Adjusting the treadle pressure
If the machine starts running when your foot is
simply resting on the treadle, or if the treadle
pressure is too weak, adjust the position (a to c) at
which the treadle spring (1) is hooked onto the
treadle lever (2).
The treadle pressure will increase from position a to
position c.
Adjusting the treadle return pressure
1. Loosen the nut (3) and turn the bolt (4). The
treadle return pressure becomes heavier as the
bolt (4) is tightened, and becomes lighter as the
bolt (4) is loosened.
2. Tighten the nut (3).
Adjusting the treadle stroke
Remove the nut (5), and then move connecting rod
joint (6) from the position in figure A to the position in
figure B. The treadle stroke will increase by approx.
1.25 times.
* This adjustment will also affect the treadle
pressure and the treadle return pressure, so these
settings should be readjusted if necessary.
HE-8000