Thread: Chainsaw question - engine dies

I have a Dolmar PS221TH top handle pruning saw. Awesome piece of kit, until now.
It starts and runs fine for about 15-20 second and then dies. Just before it dies, if you give the manual fuel pump a push, she will keep running for another 15 seconds. So its seems to be starving fuel.

Air filter is clean.
Fuel filter is new.
Spark arrester has been ultrasonically cleaned.

Will a fault in the carb typically give the 'run, die, run' symptom? Should I be looking for a blockage or a knackered diaphragm or reed valves?

I have never pulled a carb apart, so be gentle