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Help! I've tried everything to cure my WD from sh

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jarhead View Drop Down
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Joined: 23 Jun 2021
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jarhead Quote  Post ReplyReply Direct Link To This Post Topic: Help! I've tried everything to cure my WD from sh
    Posted: 26 Jun 2021 at 3:40pm
Mowing pasture with brush hog, she suddenly sputtered, bucked and shut down.  Started right up again and sounded good.  Continued mowing and same thing happened after about two minutes.  Believing it's a fuel issue, this is what I've done:  Removed carb, cleaned all jets/passages, blown compressed air to same;  removed fuel line from tank to carb and blew it out; checked gas in tank and valve outlet, clean as a whistle, no rust or sediment in tank. Fuel flows freely. Cleaned sediment bowl and screen.  removed carb inlet and blew it out.  Checked needle and seat and floats.  No sticking at all.  Floats are level with top half of carb at full seat.  I have pulled this carb three times to double check my work and insure gas is flowing freely.  Each install, starts right up, purrs, and after about two minutes starts sputtering and stalls.  What is curious is when it starts to sputter and cough, full choke smooths it out and it purrs.  Now it's running on full choke with is bad!  I think it's in the float, needle/seat where it runs out of gas, but I have tried everything to eliminate this cause.  I checked the floats for leaks dunking them in water.  No issue.  Having no luck with the fuel, I replaced the plugs, points and condenser.  That didn't work.  I should mention that this is a re-built carb from Yesterday's  Tractor and is three years old.  Sorry for the long post but I am at a loss.  Help!!
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Ed (Ont) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ed (Ont) Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 4:32pm
Hook up a small container with rubber hose. Set it up on your hood and see if it runs on that. 
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DiyDave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DiyDave Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 6:22pm
A 3 year old carb from YT?  You wore it out!Wink

Seriously, though, check the choke shaft seals, and spray some carb cleaner around the carb and manifold, while running, you may have other vacuum leaks, that appear when things get warm.  If it runs better, when the carb cleaner is sprayed in and around carb, carb gasket, and intake manifold, then you are on the way to finding the problem. Thumbs Up
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DMiller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 6:28pm
Filter screen in the sediment bowl if has one is choked and starving for gas.
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TramwayGuy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TramwayGuy Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 7:10pm
Could be the coil…
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 7:18pm
Almost sounds like the needle is sticking in the Carb. Had a customer with the same issue. I told him to take the needle out, take some super fine steel wool and polish the needle barrel and reassemble. Problem for him solved. Might be worth a check...
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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mdm1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mdm1 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 8:44pm
I have taken some metal polish on a Q-tip, put it in a drill and polished the needle valve seat. (Same as needle barrel?) Then spray some carb cleaner in the seat. Good luck and let us know how you come out.
Everything is impossible until someone does it! WD45-trip loader 1947 c w/woods belly mower, 1939 B, #3 sickle mower 1944 B, 2 1948 G's. Misc other equipment that my wife calls JUNK!
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 26 Jun 2021 at 9:00pm
sure sounds like your running out of gas, or leaking in too much air ( manifold / gasket / choke shaft).... all good ideas above.

Two minutes is about how long it takes to empty the gas bowl on the carb.. So the REFILL / gas inlet valve,  is a good place to look.


Edited by steve(ill) - 26 Jun 2021 at 9:02pm
Like them all, but love the "B"s.
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jarhead View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jarhead Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2021 at 10:50pm
Problem solved!  Thanks to Ed and Steve for the tips.  By-passed the tank like Ed suggested.  Ran great for 10 minutes.  Knew then it was blockage in the tank.  Fashioned a clean out brush I use for carbs and such, and pulled out a Lady Bug from inside the tank.  It was a slow trickle before, and now is a steady stream.  The slow trickle wasn't enough to re-supply the carb fuel bowl.  I think I'll have drink, Jack Daniels is on tap.  Thanks for all the tips guys!   
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corbinstein View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote corbinstein Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jun 2021 at 6:18am
i mitigate this on a B that I had, I took out the sediment bowl and drilled the inlet (at the top) for a 1" copper stand pipe. inserted that and good to go. 
The reason I drilled it, is that the copper pipe was just slightly larger OD than the hole I was trying to stick it into. 

The stand pipe keeps the (non floating) trash at the bottom of the tank from entering the rest of the fuel system.  


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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jun 2021 at 6:40am
Makes ya wonder how bugs n' bee's getting into the tank.  Isn't that what the cap is for? LOL!  Glad to hear you found the problem. Damn bugs!!   Angry
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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tadams(OH) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tadams(OH) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jun 2021 at 1:35pm
Bugs crawl into the fuel hose and nozzel from the fuel tank.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BigGuy1000 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Jun 2021 at 2:48pm
I use a plastic fitting originally made to protect hydraulic hose ends which happens to fit the end of the fuel nozzle on the tank hose!!!  Also ask your fuel delivery driver if they have a plastic cover for the nozzle, here in the Midwest they give for free if you ask(FS)!!!

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