My 16 year old snowblower was running very rough. The jets are not removable to clean. I always used a different gas stabilizer and a friend who repairs small engines said to run Seafoam through the engine. After 10 minutes I noticed a bit of change, but still not smooth. First snowfall running full throttle my neighbor returned my machine and said you really did a good tuneup job on the Blower. I couldn’t believe how well it was running. Seafoam is now my gas stabilizer.