Question about Troy-Bilt Mtd Southwest Tb320bv "troy-bilt" Gas Blower Vac 31 Cc

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I have an mtd gbv 31cc gas blower vac. It won't get to running speed, when taken off of choke it stalls. went back and forth from choke 1 to 2 and won't stay running. kept it idling long enough for motor to heat up but still wouldn't get up to running speed.

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Posted on Jan 02, 2017

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  • 110 Answers

SOURCE: must run choke on all the time with troy bilt gas

First I would check your fuel filter in the tank. They use a sintered type that clogs easily then allows dirt to get into the internal screen in the Zama carb, if the filter is clean and whole I suggest to take the carb out and clean it. Remenber to only use starting fluid to clean the internal parts, as carb cleaner will melt the internal check valves and ruine the carb. Dont be afraid to take the carb apart, its not brain surgery, just start with a nice clean shop cloth and lay it out as you take it apart. The screen I am referring to is on the metering diaphragm side, thats the side with one screw on it

Posted on Nov 01, 2009

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  • 736 Answers

SOURCE: troy bilt tb320bv 31cc gas blower starts and runs

inside the fuel tank you will see a flexible fuel line with a filter attached to the end ... that filter acts as a weight to position the fuel line in the lowest part of the tank no matter what postion the blower is in ... make sure the fuel line isnt broken .. also make sure the filter is still attached .. you can replace the fuel line and filter but both have to be able to handle achohol (in the gas) .. most of the older fuel lines cant and they go bad in a short time .. its actually hard to find the correct fuel line ... the size is not usually a problem but the material its made of has to say its suitable for modern gas .. most i found at local shops are the old type and wont work ..

Posted on Nov 05, 2009

  • 623 Answers

SOURCE: Engine stalls

I'd say the carb is clogged somewhere, probably the main jet. The gas today is terrible. Removal/replacement may be the (only) way to go.

Posted on May 26, 2010

rycgl
  • 1545 Answers

SOURCE: My 4 cycle BP blower will run with the choke

The carburetor needs to be cleaned and/or adjusted so if you do that, you may as well install a low price gasket and diaphragm kit in it. This will alleviate all the problems that you mention. I don't know your model number else I could give you the part number for the carb kit to install. This solution works most of the time.

Posted on Sep 06, 2011

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Will start and run at half choke. stalls as soon as choke is moved to run.


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Try running some fuel system cleaner through it. A good choice is Chem Tools Berryman B-12. There are some hardworking solvents in the product that could help you overcome a dirty carburetor. Initially use a good, strong dose. Maybe double what they recommend . (1 oz/gallon). If this doesn't work, the carb will probably need to be removed and inspected and cleaned.

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This would indicate that you need a new diaphram in the carby not very expensive any mower shop will do for about $30

Jun 25, 2010 | Troy-Bilt Mtd Southwest Tb320bv...

1 Answer

Engine stalls


I'd say the carb is clogged somewhere, probably the main jet. The gas today is terrible. Removal/replacement may be the (only) way to go.

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1. check fuel filter in gas tank (for clogged condition).
2. Check carb jet for dirt (squirt carb cleaner in jet and fuel inlet

Summary: your carb is not getting enough fuel to mix properly with constant air flow. Therefore, fuel supply needs to be cleaned... then you will run happy!!
-Jim

Oct 23, 2009 | Homelite Consumer Products MightyLite...

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