Canon NEW F-1 Service Manual page 36

4.3 Winding Stopper and Charge Lower Check
After installing (15) through (17) check the following points.
1) Winding Latch Overcharge: 0.3mm or more
2) When the SW5 pin is moved, the stopper lever must move smoothly without
catching.
Note: Numbers in parentheses in the text correspond to circled numbers on page 34.
Disassemble in normal order and reassemble in reverse order.
Canon NEW F-1 Service manual
Assembly and Adjustment Notes
Page 36