Installation does take time and most mowers won’t even run until you have the wire installed.
Depending on the size and shape of your lawn it can take anywhere between 1- 4 hrs. You’ll need to do a full inspection of the yard to work out where you need to put your wire.
For best results you should run your wire around the yard pegging lightly to test the wire is in the right place.
Once you’ve done a test run and you’re happy with the placement of the wire, then you’ll need to make the wire installation more permanent.
This is where it’s takes time.
Try not to rush this stage even though you’re keen to see your mower running, you only want to do this once.