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post #1 of 24 Old 02-25-2015, 04:01 PM Thread Starter
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Ariens Fuel Leak

My 1971 7HP Ariens Sno-Thro has been a savior so far this winter with all the storms we have had north of Boston. Now that we have a reprieve I was checking it out the other day and when trying to start it noticed fuel leaking from the carburetor bowl of the Tecumseh engine. It has always been difficult to start, after the electric starter died, but now with fuel leaking into the bowl the way it is, I am sure it is flooded and will not start.

Just wondering if this is an expensive repair for a shop to do? Still too cold here for me to attempt to fix in my garage. I should have the rope pull and flywheel key checked out while I am at it as it sometimes recoils and snaps back violently and I am suspecting that it is burning oil as well. I am sure the choke, carburetor and throttle cable could use some adjustment as well.

How much do these engine repairs typically cost? Say for the carburetor repair and engine tune-up or overhaul. I have normally done the maintenance; oil, plugs, blower lube, and changed the gear oil.

Thanks for some guidance and an estimate of repair costs.
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post #2 of 24 Old 02-25-2015, 04:09 PM
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Welcome to the forum Gkamieneski

You are likely due for a carb overhaul. You could also purchase and install a fuel shut off in line as a temporary fix.
If you're not going to try to overhaul the carb yourself just give a couple local shops a call for an estimate.





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post #3 of 24 Old 02-25-2015, 04:25 PM
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Also, if you're handy you can also go to ebay and just buy a new carburetor and install it yourself. Easier than rebuilding and cheaper than taking it in.

The recoil snapping back may be a sign it needs to have the valves adjusted.

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post #4 of 24 Old 02-25-2015, 04:54 PM
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I have a Good Used Carbs Available, PM if interested.
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post #5 of 24 Old 02-25-2015, 05:13 PM Thread Starter
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I think I incorrectly referred to the fuel leaking from the bowl. On my 7HP Tecumseh there is the "ear" of the carburetor that faces outwards and that is where the primer button with spring pumps air into the middle of. I assume this is the air intake? The fuel leak is coming from the orifice in this "ear" and down to its bottom then to the ground.
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post #6 of 24 Old 02-25-2015, 05:20 PM
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Quote:
Originally Posted by gkamieneski View Post
My 1971 7HP Ariens Sno-Thro has been a savior so far this winter with all the storms we have had north of Boston. Now that we have a reprieve I was checking it out the other day and when trying to start it noticed fuel leaking from the carburetor bowl of the Tecumseh engine. It has always been difficult to start, after the electric starter died, but now with fuel leaking into the bowl the way it is, I am sure it is flooded and will not start.

Just wondering if this is an expensive repair for a shop to do? Still too cold here for me to attempt to fix in my garage. I should have the rope pull and flywheel key checked out while I am at it as it sometimes recoils and snaps back violently and I am suspecting that it is burning oil as well. I am sure the choke, carburetor and throttle cable could use some adjustment as well.

How much do these engine repairs typically cost? Say for the carburetor repair and engine tune-up or overhaul. I have normally done the maintenance; oil, plugs, blower lube, and changed the gear oil.

Thanks for some guidance and an estimate of repair costs.

if you lived nearby, I'd get that puppy growlin' for free...
nothing a turn of a screwdriver and some parts couldn't fix. if you did it yourself, maybe $50 ?
they are easy and fun to work on.




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post #7 of 24 Old 02-25-2015, 05:57 PM
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If it is leaking when your prime it, that is normal.

If it is leaking all the time the float isn't closing the needle and seat for some reason.

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post #8 of 24 Old 02-26-2015, 08:21 AM Thread Starter
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I do have the fuel shut off valve just below the tank. It leaks downward whether or not I prime it and at first I thought it might be the very old fuel line, but no, it dripped straight out of the middle of it and down to the ground.

I was hoping to find a fix without dis-assembly so that I can get through the next storm without bringing it into the shop. Any way I can reach in with a tool to make sure everything is seated correctly?

At the same time as the leak began, it no longer starts, so flooded?
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post #9 of 24 Old 02-26-2015, 09:03 AM
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I had an 8hp Tecumseh on a previous blower, it developed a drip from the nut on the bottom of the bowl. But it still started and ran fine.

I was hesitant to mess with it (it was working well, and I didn't want to change that aspect, certainly not during the winter). It already had a fuel shutoff, so I'd simply close the fuel shutoff and run the carb dry at the end of each use.

That's admittedly a band-aid fix. But at least some slow drips can still let the engine start & run fine. My theory was maybe the seal around the nut at the bottom of the carb was leaking (as opposed to a float-related problem), but I never confirmed whether that was true.

I've continued running the carbs dry on my blowers at the end of every use, so I don't know if my more-recent Tecumseh engines have this drip issue.

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post #10 of 24 Old 02-26-2015, 09:22 AM
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The easiest fix is the fuel shut off and like RedOctobyr it will get you through the season and once it's warmer and greener out you can tackle the problem.

Do you think you might try fixing it yourself or would you bring it in for service ??

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