Garage door maintenance.... joy

0roo0roo

No Lifer
Sep 21, 2002
64,795
84
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Originally posted by: HomeBrewerDude
you should look on the web for manufacturers recommendations/specs.


its craftsman. isn't that sears? no website.
 

meltdown75

Lifer
Nov 17, 2004
37,548
7
81
It has to be a little slack. Don't tighten it too much. I believe for mine, the chain had to be able to sway 1" up / down. Perhaps this is a guideline for common garage door openers.
 

0roo0roo

No Lifer
Sep 21, 2002
64,795
84
91
guess googled failed me. i searched for craftsman AND garage door... and it came up with #%@ sears and sites selling garage doors.. no craftsman.com hah:)
 

Soapy Bones

Senior member
Dec 4, 2003
397
0
76
I just installed a Craftsman Garage door opener at our house, chain drive. The manual said to have enough slack so that the bottom part of the chain was not below the bottom part of the steel support channel. I initially set it up correctly and over a period of a month or so I had to re-tighten everything because too much sag developed. I just adjusted the tension at the door end where the chain attaches to the bracket linking to the door.

So overall I would say you want there to be enough tension to keep it just about even with the bottom of the center steel beam. This is of course at the lowest point of the chain.