III. Rotate Arm

1. Depress the letter "M" and half cycle the machine. With the head play removed in the negative direction, check where detent contacts the element tooth.

2. Depress the letter "W" and half cycle the machine. With the play removed in the negative direction, check where detent contacts the element tooth.

If the two characters "M" & "W" don't detent the same, adjust the stud (87-31) up and down until they do.