Are my garage door's springs correctly accustomed? I went to install my garage door opener and it say that...

I went to install my garage door opener and it say that the door should hold its own weight when let step half way up. It comes down next to weight when I do this, and weighs pretty a bit.

The home builder said its fine. But is it?
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witch way do i turn the springs to adjust the doors

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the springs should be adjusted so you can easily break open and close the door by hand. Make sure the tracks are straght and the rollers and hinges are lubricated. If your trying to install a GDO on and outmoded missadjusted poorly maintained door. you'll never get it working right. Be caureful, you can gain hurt quickly if your not cautious working on spring adjustment.
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No. The general rule when installing a spring for the number of wraps is the height of the door plus a partly. So if your door is 7' tall you put 7.5 wraps or 30 quarter turns. The spring should be painted. count the number of lines and for each time it completes a revolution specifically one wrap.

If you wish to add stiffness email me. I am not comfortable posting that info where any one can find it as it can be dangerous. However your responsibility is fairly simple and carries smaller quantity risk than installing a new spring.
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Answers:    No. When fully opened, the door should stay open, or possibly close slightly (not more than a few inches).

At in the middle, the door should either be neutral (stay still) or close slowly. You should efficiently be able to hold the weight of the door beside one hand.

When fully closed, the door should stay closed.

Sounds like your builder is:
- trying to not do work he should do
(or)
- not learned and doesn't know what he's talking about

Think of it this path - in the event of a power failure, you will obligation to disengage the drive on your opener. You should be able to confidently (EASILY) open and close the door. If you can't, the counter-ballance springs are not doing their job.

I'm not a saleperson or installer - in recent times an person with experience performing home repair and replaced my own door & spring system. One of my neighbors have done this on a regular basis -- sounds like you call for additional springs or a spring with a better spring rate.