Took a mower for a good run today - 2003 Masport with xts 50 Quantum

Anyway, back lawn ran great, front verge ran ok, then I left it idling on the path for about 5 minutes. Came back and put the throttle to half - bogged and died.

Primed, started first go mowed for 2 mins, then surge and dead. Fiddled for a minute, primed ran 30 seconds and died. Primed then started and stalled. Repeat and same thing.

"blocked jet" I thought, burnt my finger getting the nut off - clean as a whistle. Good fuel flow once I turned the tap on (fitted one a while ago)

Cracked the sh**s and went and finished the front with another mower.

After cooling 10 minutes, I was able to start (hard but managed) but surged.

Whilst it was running, I stuck my hand over the snorkel - normally this is accompanied by black smoke and a flood. However now it revved hard and wouldn't stall

So this would indicate an air leak downstream of the carby - loose carby or intake at the engine

Will have to have a look

Any other ideas?

Regards
Tyler