Tecumseh HMSK80 surging
When I started up my snow blower yesterday to test after new friction disk and belts, it started surging fairly dramatically.
At a rate of about once per second, it accelerates to full throttle, then cycles back almost to idle. I took the cover off and you can see the governor mechanism moving back and forth.
Putting on a little choke moderated it a little but didn't sop it. What trouble shooting steps should I take? It didn't do this at the end of least season, when I drained the tank and carb.
I took the bolt and float bowl off. The bowl was clean, the bolt didn't look bad but I washed it a while in carb cleaner. Also addes some Seafoam to the gas (which is fresh).
It now runs steadily at full rpm but still pulses at part throttle?