Adjustment
12.04 Checkandadjustmentaid
By blocking with holes 1
4
3
21
5
Fig. 12 - 01
●Turn the balance wheel until the needle bar has approximately reached the required position.
●Place the 5 mm blocking pin in the appropriate hole and put pressure on it.
●Turn the balance wheel forwards and backwards a little until the blocking pin moves into the slot in the crank behind the bearing plate, thus blocking the machine.
Hole1 | = | 2.0 mm after the bottom dead center of the needle bar (2.0 past tdc) |
Hole2 | = | Top dead center of the needle bar (tdc) |
Hole3 | = | 0.25 mm after the top dead center of the needle bar (0.25 past bdc) |
Hole4 | = | 1.0 mm after the top dead center of the needle bar (1.0 mm past tdc) |
Hole5 | = | 4 mm after the bottom dead center of the needle bar (4.0 past bdc) |
12 - 2