mtd yard machine 26 inch snowthrower - Snowblower Forum : Snow Blower Forums
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post #1 of 11 Old 02-24-2019, 12:05 AM Thread Starter
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mtd yard machine 26 inch snowthrower

my son gave this to me to fix. model no 31as63ef700, carb no 95114026a. starts fine but after choke opening it surges and gets worse with full open throttle. pulled carb bowl off and removed jet and emultion tube and cleaned, pulled float with needle both clean a few times no results. good gas flow to carb put a little carb cleaner in tank and run no change. short of buying new carb on e-bay are there any other ways to clean this carb out as it is sealed? rich
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post #2 of 11 Old 02-24-2019, 10:51 AM
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Does it have a Welch plug? Needs to be removed and cleaned behind it.

Buy Berryman's Carb Cleaner dunk tank, buy a spray carb cleaner, buy a set of welder's torch tip cleaners.

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post #3 of 11 Old 02-24-2019, 10:54 AM
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Does it have a Welch plug? Needs to be removed and cleaned behind it.

Buy Berryman's Carb Cleaner dunk tank $7-$30, buy a spray carb cleaner $2, buy a set of welder's torch tip cleaners $2.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
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post #4 of 11 Old 02-24-2019, 02:28 PM Thread Starter
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used a drill bit to clean out the main jet, also the same with the emulsion tube. sprayed carb cleaner in the passage and blew out with air.welch plug,? what and where. carb is sealed everywhere else. bolt that holds the carb bowl on has no holes. rich
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post #5 of 11 Old 02-24-2019, 10:28 PM
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Like said above, soak in some good carb solvent or get yourself a ultrasonic cleaner And use some simple green in it for solvent.. Are you removing the low speed jet under the idle screw? You need to count the turns of the idle screw in, then remove and you can pry the jet out and clean it and clean in the opening. I have one of a similar machine and I drilled the main jet out to .030, it was originally .028. They run too lean.




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post #6 of 11 Old 02-25-2019, 08:24 AM
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you can get a new carb for less than 10 dollars on ebay and amazon
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post #7 of 11 Old 02-27-2019, 05:21 PM Thread Starter
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10.00 getsyou a 10.00 carb unless im wrong. thinking of boiling it out. can only remove jet, emulsion tube, needle and float, everything else is sealed. rich
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post #8 of 11 Old 02-27-2019, 06:11 PM
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If you can clean it successfully, awesome!

But if not, some of the aftermarket carbs have adjustable jets. Which is a nice feature that the original carb may not provide. So that could be an upgrade in some ways.

Ariens 1024 Pro
Toro Power Clear 221QR
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post #9 of 11 Old 02-27-2019, 06:57 PM
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thers many holes that need to be cleaned thoroughly for carb to run correctly, yours is running lean if it dies when choke is off. heres a good site on what needs to cleaned in a tech carb

Snowthrower carb cleaning

Bought a dead but now fixed 1980ish craftsman II 10/28....ITS ONE HEAVY BEAST

MY VIDS ON FIXIN HER UP

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post #10 of 11 Old 02-27-2019, 07:32 PM
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Quote:
Originally Posted by pipeproducer View Post
10.00 getsyou a 10.00 carb unless im wrong. thinking of boiling it out. can only remove jet, emulsion tube, needle and float, everything else is sealed. rich
10 dollars gets you a brand new carb that works as well or better then the original....the Chinese have come a long way in this century....I buy at least 10 a year, and all have worked flawlessly....I only clean now if I have no new carbs in stock....
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