Repairing Briggs&Stratton Choke-O-Matic carburettor

My lawnmover didn't work well. It ran only without air filter, stalled easily and consumed lots of fuel. It was very obvious that it ran on very rich mixture. I had to clean carburettor and overhaul it completely. Parts did cost about 25€ and job took about half a hour. Lawnmover works now well, it doesn't stall, fuel consumption dropped to 1/10 what it was and there came much more power. It eats even 15cm tall grass well. This carburettor is quite infamous of problems and it is superseded usually with traditional float carburettor.