QJ engine SRK 125s release carburetor

Good morning community, my son owns the SRK 125s since this week. He is 15 and gets his driver’s license only in September. Due to the fact that the dealer prices have increased here on site, I was able to negotiate the list price and have struck. Now the small motorcycle stands unfit until September for 5 months in the garage. I have already occupied myself with the topic resin in the carburettor and have decided the gasoline over the carburettor exhaust screw e. The opinions on the topic run in both directions – Drain Yes/No! I prefer to let off the petrol and go safely. The bike has no petrol tap, I could squeeze the petrol hose off the tank and let the engine run until the carburettor is empty – I don’t like this option because the engine had too many cold starts in the workshop and introduction at the handover. – Now to the question: Where is the screw on the carburettor to release gasoline? – If I take the The carburetor is installed in the middle of the motorcycle. I would have to completely dismantle the lining to be able to remove it. I don’t want to. It must give the possibility to get to the screw quite easily – but I don’t see any screw. Thanks for your support MfG benny.ka