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It's a mystery

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A poorly running walk-behind leaf blower has risen back up the to-do list. Hard to start; won't pickup any RPMs; after warming up will go at about 1/2 throttle, at best. Changed the oil this weekend (along with every other small engine I own^) got it running, and while running I shut the exhaust deflector all the way so I could roll it thru a narrow door. I had expected the extra work load to kill the enimic engine, so imagine my surprise when it throttled up to full speed!OO I open the outlet and it drops RPMs, close it it speeds up, etc. It's like having an invisible throttle cable attached to the deflector. Any guesses? Thanx, Dave

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With the deflector the air has no place to go so it just winds up spinning round and round in the blower housing.

If you suspect a dirty carb go to your local Yamaha dealer. The have a product call "Ring Free". The name may have changed. A small bottle used to be $2.00. Mix that and Sea Foam to directions for each product and it does a pretty good job of cleaning carbs as the engine runs.


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