Brother HE-800A - Manual (Page 29)

HE-800A
4. INSTALLATION
21
ዐ-ውዐ. Installing the treadle connecting rod
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 (4) 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 (5) and turn the bolt (6).
* The treadle return pressure becomes heavier as the bolt (6) is tightened, and becomes lighter as the bolt (6) is
loosened.
2. Tighten the nut (5).
Adjusting the treadle stroke
Remove the nut (3), and then move connecting rod joint (7) from the position in figure A to the position in figure B.
The treadle stroke will increase by approximately 1.25 times.
* This adjustment will also affect the treadle pressure and the treadle return pressure, so these settings should be
readjusted if necessary.
3888Q
Fig. A Fig. B
3890Q 3889Q