Question about Troy-Bilt 31cc 2-Cycle Gas Powered Blower/Vacuum #TB320BV

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I tried to start my troy vac/blower and it takes for ever to start and when i used the vacuum it runs slower and finally stalls and wont start backup

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Your machine probably needs: 1. the carburetor adjusted 2. The carburetor cleaned 3. A gasket and diaghram kit installed in the carb

1. To adjust:
2. To clean: Remove, disassemble and clean. Here are the carb parts: (Only clean the metal parts)
3. Gasket and diaghragm Kit: You will need to know the carb model (probably a Zama)
Find the model of your repair kit here:
An RB kit is a complete rebuild kit (contains all the parts in the G & D kit)
A G & D kit is a gasket and diaghragm kit and will cure most of the carbs ills.
Many online vendors sell these and there are an abundance of them on Ebay.

Posted on Nov 12, 2010

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Ran leafblower without adding 2 cycle oil , it finally shut off but did not sieze. the motor tried to turn over the next day but wont start again.

If you ran it without oil, the piston and/or cylinder is scored so badly it won't build enough compression to fire. A few of these are worth repairing but usually cheaper and easier to buy a new one.

Oct 11, 2010 | Troy-Bilt 31cc 2-Cycle Gas Powered...

1 Answer

Tb320bv blower, I can set the choke and start it but it will not run. As soon as the choke pops off during acceleration the blower dies.

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.

May 25, 2010 | Troy-Bilt 31cc 2-Cycle Gas Powered...

1 Answer

Must run choke on all the time with troy bilt gas blower: 50:1

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

Nov 01, 2009 | Troy-Bilt Mtd Southwest Tb320bv...

1 Answer

Troy-bilt gas blower/vac stopped and pull cord won't come out

NOPE You can buy new cheaper than have this one repaired, Also I don't recommend using these for a vac on leaves. Leaves are very very dirty and these blower vacs usually dont last long when used as a vac. The seize problem was from an improper fuel mix. THE next one you getone use a little more oil, than says in the owners manual. Like if it says 50/1<<>> mix 40/1 more oil will just foul the plug and oil the muffler,but you will not have a seizure problem. I have never had a problem with a 40/1 mix .

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2 Answers

Troy bilt tb320bv wont start. only two months old.he cord won't pull out completely like it used to and it won't let me start the thing any longer. It is like something is jammed in the system.

It seems to be a usual problem with troy bilt trimmers and leaf blowers. There should be a half moon piece of keystock that holds the flywheel on,sometimes its known to sheer off. Could also be one of the keepers that hold back the plastic disk for the cord comes loose,it gets in a bind. Either way,you have to open up the case and see whats going on.

Aug 05, 2009 | Troy Bilt Tb320bv Spring Assist Blower/Vac

1 Answer

Hard to start then won't stay running

All of these "starting/running" issues are similar and related directly to one cause. It was suggested several times that the muffler may be plugged, but mine was found clean during a complete teardown. Cab cannot be blamed either, since the fuel filter wouldn't be able to pass anything large enough to foul an orfice.
Very common issue with hot running two cycle engines...ring fouling and loss of compression. The brand or type of oil must be scrutinized, and the mixture kept exact. I would never use anything but Echo or manufacturers recommended oil in these units ever again.

Jul 28, 2009 | Troy Bilt Tb320bv Spring Assist Blower/Vac

1 Answer


Check the safety switch where the vacuum tube connects to the unit or disconnect Ignition switch to find failure. (Never operate unit with safety switches disconnected!)

Apr 07, 2009 | Troy Bilt Tb320bv Spring Assist Blower/Vac

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