To check fine timing:
1. Depress the letter "M" and slowly rotate the turning wheel until the detent (37-4) enters the tooth and starts to exit; when the detent exits the tooth it should gently touch the positive side of the tooth (132-32).
To adjust:
1. Loosen the print shaft gear (47-38).
2. Rotate the print shaft top to rear or top to front to achieve the correct adjustment.