hi Pau13z yeah you are more than likely correct BUT not many people have the skills to modify the mower in such a way as to build some type of clutch or belt release. So if mucking around with the decompression valve works as suggested. i think all of us could manage that mod. and another thing if you remove the belt then you will need a flywheel like the blade disc.maybe? I reckon its worth trying your idea. I haven't actually tried starting the mower without the belt.but i have bench ran the same size engine and having no flywheel on it it ran perfectly fine. Its just a weird anomaly that i for one after reading this thread found out about. as i said before, until now i thought my 24 just had higher compression . this makes me really curious now to see how she starts without the belt on. So your Noob question is perfectly relevant here mate.and i also thought a spring loaded slipping pulley tensioner as a ride on mower has may also work.
If my collection is complete ( then how come i keep buying stuff ? ) 🤔🤔🤔🤔🤔