Most door closer brackets have slotted holes so you are able to slide them left to right to make adjustments without.
Adjust door closer strength.
To adjust the latch or sweep speed.
Most closers allow you to adjust the speed and power of the door.
Storm doors have a connecting pin that can be set into two separate slots to change the tension on the door.
Turn the screw marked with an l counterclockwise 1 4 turn to increase latch.
This video shows you how to adjust the tension on your automatic door closer.
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.
If you are capable of doing this work yourself.
Insert a 1 8 inch allen wrench or screwdriver in the appropriate set screw.
Latch speed valve valve 3 as specified in instructions controls the latch speed of the door 3 32 allen wrench.
If there is just one screw on your door closer turn it clockwise to increase the speed with which the door closes.
The latch speed is the last 15 or so of closing.
Adjust the force with which the door latches or swings from 15 degrees to fully closed by changing the latch speed.
Turning the valve clockwise will cause the door to latch slower and more gently.
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.
Turning the valve counter clockwise will cause the door to close faster.