jacrawley
ArboristSite Member
My 670 champ has a newly rebuilt carb. It ran great through a tank of fuel. On the next use it would drop out mid cut and start to race at idle and bog on acceleration. Then it would recover and make it about halfway through a cut then repeat. I tried venting the tank cap to make sure it wasn't pulling a vacuum but no effect. I dumped the fuel and there was a few tablespoons of water at the bottom. Swapped that out and no change. Could I have jacked up the metering valve setting? It probably wouldn't hurt to swap the fuel filter. I haven't seen this kinda variable behavior before.
