They should be marked on the closer.
Glass door closer adjustment.
The self closing speed is micro adjustable through the speed screw at the bottom.
Move the long connecting pin into the forward hole for winter or rear hole for springtime of the closer each time you change the storms or screens.
If you are capable of doing this work yourself.
Most door closer brackets have slotted holes so you are able to slide them left to right to make adjustments without.
If none of these adjustments works then your door closer may be worn out and you will need to buy a new one to replace.
If necessary adjust the pressure control screw on the closer as well.
Decrease the closing speed.
Adjusting the closer speed on your larson door can help if you re having issues with your door not shutting completely.
If your closers are operating either.
Increase the closing speed.
Replace the plate and if necessary the door and you.
Making an adjustment to a commercial door closer if you find that there is oil in the cover or oil on or leaking from the closer body stop right there you need a new.
Remove the plate to inspect the door closer body for leaks see below if adjustment holes had not been drill during the original installation measure where the adjustment screws are located.