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Mend Hamilton 340-020 Wall Clocks

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Mend Hamilton 340-020

Time Adjustment ?

I have a Hamilton #340-020 that gaines approx. 2 minutes every hour, where is the adjustment screw to slow this clock down.

Wayne H. Elliott Jr.
May 2010
HamiltonHamilton 340-020Clocks and Watches, Wall Clocks
Your clock has a floating balance movement. The adjustment for the speed is on top of the little wheel that rotates back and forth. The adjustment is a little 3 finger lever on top of the wheel. You will see stamped on the brass plates which way to turn it. + increase speed and - for decreasing speed. Do not try to adjust it to much. The maximum adjustment will be about one quarter of the wheel diameter. You only need to move it about 1/32 of an inch to begin to make a difference.

Stevens Clocks
June 2010
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