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Brad
Yard Vac only runs on full choke
Brad

My Parents gave me a Craftsman Yard Vac (Model No. 247.770550) that they hadn't used in a few years. The tank had been empty, but mice had made a nest around the engine. I chased the mice away and fueled up and it worked fine. I cleaned it up for winter, removed a few dead mice and their nest, put some sta-bil in the tank and ran the engine for 10 min. This fall it would not start, I replaced the spark plug, air filter, oil and gasoline (this time with TruFuel). I also took off the housing and cleaned out the rest of the mouse nest. Still no luck. I then decided to clean out the carburetor, it was pretty dirty. I replaced the pin & seat, bowl gasket, and the sealing washer and cleaned everything with carb spray, a paper clip, and a toothbrush.

The Vac now starts but will only run with the choke fully on, and will die after ~2 minutes.

I'll add that after reassembling i had gas leaking all around the carb, i tightened the main jet bolt and it stopped. Also, after using the vac for a little while i had another gas leak out the carb where the air filter hole is (this was after it sat for 5 min), but this stopped quickly.

A. Spruce
Re: Yard Vac only runs on full choke
A. Spruce

You've definitely got a carburetor/fuel issue.

If the fuel is not shutting off in the bowl, then the float isn't set right or the needle and seat are either damaged or binding in some manner. Go back over these items with care and make sure they are set and functioning properly.

The lack of running without the choke on is an indication of lack of fuel, suggesting that ports and passages within the carburetor are blocked. A shot of carb cleaner and compressed air should clear most things. If there are diaphragms within the carburetor, it is also possible that these are damaged or no longer supple enough to work, requiring a rebuild kit.

Do yourself a favor and look up your equipment model number on the internet and get yourself the operators manual. You can also find the ID numbers on the engine and get a manual specific to the engine, which will help you diagnose and work your way through the problem.

Sombreuil_mongrel
Re: Yard Vac only runs on full choke
Sombreuil_mongrel

Buy a gasket kit, take off the carburetor bowl, clean it out. Then use carb cleaner to flush out the fuel passages. Or add a healthy amount of denatured alcohol to the gas tank to absorb the water. They really hate standing for 11 months and then being used once. Maybe run it dry of fuel this year?
If this is two cycle, I can't help you, probably needs the carb rebuilt and the fuel lines flushed out.

dj1
Re: Yard Vac only runs on full choke
dj1

On black Friday, get yourself a new Ecko or Hasky vac at a discounted price and return this old vac with a thank you note.

ed21
Re: Yard Vac only runs on full choke
ed21

Gas flow is the problem. New gaskets are needed if it's leaking. When tightening down gaskets, alternate tightening the screws a little at a time so they don't warp.
Using Sea Foam in the gas occasionally to keep it clean works wonders in my experience.
I like Star-brites gas stabilizer better than sta-bil as a gas preservative. Available at boat stores in my area. I never had gas issues using it.
As mentioned, it's not good to let equipment set so long without using. I generally store them with gas in them and try to start them once in a while just to run them a bit even if I don't need to.

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