Lawnmower help

My lawnmower just gave out on me so after a bit of help please. Was running fine, left it idling while I went to empty grass box, returned and hit the throttle which killed the engine. Got it restarted and the powered roller works but any time you engage the rotary blade the engine dies.
It feels like a fuel blockage or something clagging the blades but can't see anything.
What should we be looking for?

 

Oh heck, it's a sarp slm 5360 hxr, which is an incarnation of a Honda model. Hoofing great thing it is and needs a good clean, but no apparent debris catching anywhere

 

Is the blade release control somehow fouling the carb/throttle?

 

Dunno lol what would that look like?! If you mean the levers on the handle then no

 

Generally running fine but tricky to restart after the throttle kills the engine. I don't understand why the powered roller works fine but the blades don't. Might have to remove some parts to see if there's something clagging up the works

 

Further down near the carb, there will be an idle adjustment screw on the spring loaded butterfly flap, if the blade control cable is catching that might cause it to stall.

 

Will do. It looks pretty accessible thankfully! I tried turning the blades yesterday and they were pretty stiff but I hadn't engaged the drive so will double check...

Will have a look for it

 

Is it wrong that this is more fun than cutting the grass? I'm quite enjoying looking at all the engine diagrams!

 

OK, I'll pull that out later too

 

Blade assy looks to be OK. I've pulled the throttle and the rotor spins OK; have also disassembled and no blocks or breaks seen.

Can't get it started now so going to look at the carb. Did start on this but lots of fuel spurted out so stopped straight away. Have since realised there should be a shut off lever in there somewhere!