I have some seriously large laurel, fir and rhododendron bushes and hedges and use a similar tool to yours, but never had much luck with the hedge trimmer attachment. I just use the chainsaw attachment for everything.
I tried to get quotes to remove old Marley tiles and replace with modern vinyl tiles. The moment the tilers realised the Marley tiles were laid on bitumen they just didn't want to know. In the end I did it myself. The tiles came up easily and I then sealed the bitumen with SBR and used...
You would need to hire a qualified surveyor to decide what the problem is and who is responsible for fixing it. You would need the owners agreement for this and if unreasonably withheld then mediation maybe might be the next move.
A lot of the tools you buy these days are brilliant if you just want to hang them on a pegboard in the garage to impress the neighbours but a different matter if you actually try to use them.
It's usually fitted to the screen on the other side (the wet side) to that shown in your photo and is a 'C' shaped translucent vertical nylon strip that sits between the fixed and moving parts of the screen. I haven't actually seen a seal a seal fitted where you you indicate in your photo.
Best way is to use a vernier calliper to measure the dimensions of the old cartridge and compare that to the detailed dimensional sketches on cartridge manufacturers/sellers websites although getting a combination of the right number of splines and correct dimensions may not be possible.
Responsibility for a boundary doesn't mean responsible for a fence that is erected on it. Generally a fence belongs to the person who paid for it but that doesn't impose any obligation on them to maintain it unless there is a specific covenant to that effect in the title.
Thanks for the replies. This wet belt thing is new to me and difficult to understand, from what I have read, how often it needs to be replaced. Anyone any idea what a sensible life expectancy would be for a wet belt fitted this 4 year old Fiesta Ecoboost with 10K on the clock?