Question

Find out the reason for jerky movement of the carriage ?

• A. Low tension of loose dog spring
• B. Low tension of mainspring
• C. Worn out draw cord
• D. High tension of mainspring

Answer 1

Answer:

D. High tension of mainspring

 Reasons for jerking movement of the carriage

• Worn out teeth of escapement wheel.
• High tension of the mainspring.
• No oil in the way rod channel.
• Worn out of dogs.