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New Member
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Jan 31, 2010, 12:58 PM
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I have a murray snowthrower model number 621453x31nc with a techumseh that won't start
It has a techumseh motor model number th139sa 139cc displacement. It is getting spark and I replaced the spark plug with an oe one. The fuel is fresh fuel pre mixed. It is getting both fuel and spark but won't start. I need help as I don't know what could be the problem
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Outdoor Power Equipment Expert
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Jan 31, 2010, 05:45 PM
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Hi,
I show this as a Murray/Scotts made for Home Depot in the Canadian market. Parts breakdown is here:
http://www.outdoordistributors.com/p...PARTS-LIST.pdf
Owners manual not found.
You say it is fresh mix, but was it dumped of bad mix? Is it a float or diaphragm carb? Any numbers or such on engine?
Peace,
Clarke
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New Member
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Jan 31, 2010, 06:25 PM
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The tank was drained and the mix was completely fresh. Carb is a float carb and I cleaned it out as it was plugged. What numbers do you want the ones for the blower or the motor
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New Member
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Jan 31, 2010, 06:27 PM
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 Originally Posted by crigby
Hi,
I show this as a Murray/Scotts made for Home Depot in the Canadian market. Parts breakdown is here:
http://www.outdoordistributors.com/p...PARTS-LIST.pdf
Owners manual not found.
You say it is fresh mix, but was it dumped of bad mix? Is it a float or diaphragm carb? Any numbers or such on engine?
Peace,
Clarke
The tank was drained and the mix was completely fresh. Carb is a float carb and I cleaned it out as it was plugged. What numbers do you want the ones for the blower or the motor
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Outdoor Power Equipment Expert
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Jan 31, 2010, 08:24 PM
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Hi,
I would need engine numbers to look it up.
Peace,
Clarke
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New Member
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Jan 31, 2010, 08:32 PM
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Model number is TH139SA
Engine family is 4TPXS.1395EF
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New Member
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Jan 31, 2010, 08:34 PM
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Also you wouldn't have a diagram of where all the hoses are supposed to go would you it would be greatly appreciated
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Outdoor Power Equipment Expert
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Jan 31, 2010, 10:26 PM
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New Member
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Feb 2, 2010, 08:24 PM
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OK so I'm still having troubles with the motor. I have tried priming the motor by putting a little bit of fuel into the cylinder but it still won't start. It seems to be flooding the engine and the carb as fuel is spitting out the end of it. One pull on the cord and it seems to flood it. I have adjusted the float and cleaned the carb. It has compression which I have check by plaacing my finger over the sparkplug hole while pulling the cord. Any ideas what I can do next?
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Uber Member
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Feb 2, 2010, 08:36 PM
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The fuel valve is sticking in the carb. You may have to dissassemble and clean.
-or-
You can try a small amount of gas mixed with Seafoam carb cleaner after draining the tank.
FYI:
You can use spray carb cleaner as starting fluid. DO NOT use starting fluid. Gas is Ok, but carb cleaner is better.
You need to use fuel stabilizer like Sta-bil. 20/20 hindsight.
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New Member
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Feb 2, 2010, 08:42 PM
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OK where abouts is the fuel valve in the carb
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New Member
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Feb 2, 2010, 08:45 PM
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Where abouts is the fuel valve
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Outdoor Power Equipment Expert
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Feb 2, 2010, 08:52 PM
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Hi,
I might point out that the manuals tell you that there is a correct direction for the pointed end of that wire on the inlet needle. It must point toward the air cleaner/air intake.
Peace,
Clarke
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Uber Member
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Feb 2, 2010, 09:17 PM
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New Member
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Feb 2, 2010, 09:35 PM
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OK thanks will let you know if this works
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New Member
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Feb 2, 2010, 09:38 PM
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Do you think there is anything else that might cause it to not start
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