Toro snowblower carb question 3h.p.?

I was testing a toro snowblower outside. customer said he thinks it is a carb problem. It starts great, has spark and will throw snow. Compression is about 75 psi. The only problem that I had is after about a few seconds of snow plowing the engine would die out. I ordered a carb rebuild, also a spark plug and fuel filter change. I believe that the carb is putting out enough as long as you do not plow for too long. I believe the carb needs a revbuild, am I correct. The engine starts great.