Olympus OM-1 Repair Manual page 116

£-20
2) 1st curtain stops at the improper position.
After the shutter is released, when the boss of the Gear A is pressed
against 8501 (Base Plate),the edge of 8538 (Curtain) should almost
reach the Scratched-Line (see C below.)
If it does not, an adjustment may be made by moving vertically the
mounting position of 8517 (Stopper) assembled in 8519 (Shaft).
Reference: (Stopping point of the second curtain)
At 1/000 sec. the boss of the Gear B (covered with a
rubber nng) should hit (8502) but not at the speed of
1
/
1
.
Checkup
The first curtain should stop at 3.7^*5 from the edge of the mask.
Also, the overlapping with the Patch of second curtain should be
2.5mm or above.
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