Strimmer won't start (in its defence, it has been 2 years since I last used it and it looks like the carb is gummed up) and the brand-new backpack sprayer I bought yesterday has the same fault as the one I threw away; it pumps liquid up the hose instead of air into the tank, then hydraulic locks. I assume it's the shitty Chinese poppet valves. I've dismantled it (and got covered in silicone grease) but I can't see anything obviously wrong, and I can't dismantle it enough to get to all the valves. I think I'll just take it back to Screwfix and get my money back.
Fuck it, let's drink lots of beer.