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To begin, remove the switch, then from the stock — the two rings of the seal. Take out the axle with a pin. Take the cut copper wire with a diameter of 5 — 6 mm from one end replusive her. Drilling a hole at flattened end and in the center axis for thread M3 (drill diameter 2.5 mm). Made item subtended with the axis of the screw made of brass, bronze, and then collect the switch. It is important not to forget to put back on the stock rubber ring seals.

Recovery switch:
1 — switch, 2 — pin switch, 3 — axis switch, 4 — way stock switch, 5 — sealing ring; 6 — pin-substitute wire, 7 cuff stock.
I use reinstalled the switch about a year.
N. Koziakov, Voronezh