If the cage is in good shape firmly re seat it into the downspout hole.
How to unclog inground gutters.
Pull the underground drain which is often a black corrugated plastic pipe away from the end of the downspout.
Tap the side of the downspout.
Expose the bottom downspout opening divert the flow away from any landscape drain and then use a garden trowel to reach up into the opening and remove any clogged leaves and debris that could have accumulated there.
Remove all the accumulated debris in the gutter.
Remove the guard at the other end of the drain pipe if there is one.
You have to remove the spout to access the downpipe.
Remove the screws at the top of the downspout connecting it to the gutter.
To unclog a gutter downspout try your easiest options first.
These unprotected gutters allow debris small and large to enter the gutter travel down the downspout and into the in ground drainage.
Walk down the ladder one rung at a time gently knocking on the side of the downspout as you go.
Remove and clean it.
Follow these suggestions to unclog your downspout starting with the easiest options first.
Start by cleaning the bottom downspout opening.
Tips on how to unclog a gutter downspout.
Remove the downspout from the pipe.
Either of the above scenarios however years of drainage has carried debris but the system is clogged and water can no longer enter.
The downspout is the pipe that runs down the building from the gutter to the underground downpipe.
Disconnect the gutter downspout from where it connects to the drain pipe.
If the clog occurs at the downspout cage.
Turn on a garden hose to its most powerful setting and run water through the drain pipe.
Then climb back up and try rinsing the downspout with your garden hose again.