Model 38584
Serial 280003422
engine is Briggs 084233-0199-E8, two stroke
Neighbor brought this over complaining it would not start. I could not start it either. I gave the carburetor two cycles in the ultrasonic cleaner, rinsed, blew out water.
Started nice on the first pull. But even after it warms up, it hunts. Not a quick small-variation hunt, but it runs good for a bit, slows way down, then speeds back up for a bit. A much longer and more drastic cycle than I often hear.
I gave it two more cycles in the ultrasonic cleaner. Same hunting issue. I cannot believe the carburetor is dirty.
And get this: for grins I primed it during a slow cycle. That did not help, but leaving my thumb on the primer to plug the hole smoothed out RPMs. It ran poorly and slow, but it did not hunt.
Could there be a leak in the primer hose or bulb?
Any thoughts would be appreciated.
Dale