Mtd Southwest Tb320bv “troy-bilt” Gas Blower Vac 31 Cc

I have had the primer bulb replaces several times and the unit still doesn’t work. I don’t think it’s the bulb. After pressing the bulb to primer the unit, it stays depressed in and won’t allow me to press it again for about 3 minutes. As a result I am not able to start this unit.
Experienced gardeners share their insights in answering this question :
Hi ggarmaYour problem is not the bulb, it is in the carb…here is a few suggestions.*************************************Sounds like you have dirt/debris in your caburetor jets,fuel passages or a diaphgram that is becoming non-flexible. Check/Clean/Replace your Air Filter, a dirty air filter can make your engine run to rich with fuel.
Note:Before you disassemble the carburetor:Write down on a piece of paper and or take a picture of how the linkage attaches to your carburetor for later reference when you go to reinstall your carburetor.Mark each piece with a awl, or some kind of sharp instrument that will make an alignment scratch before you disassemble the carburetor into separate pieces.That way you will know which way it goes back together when you reassemble it.
Sometimes you can get by with priming the carburetor or by using a very small shot of starting fluid and letting it run a few times like that, and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.Check you fuel line/s condition…after a while they will degrade and need replacement.
Check/Clean/Replace your fuel filter if you have one.When you remove your fuel lines from the carburetor be sure to make a drawing or take a picture of how the lines are connected to the carburetor.Also a good time to take a picture for later reference for reassembly.
If the mower is over a couple of years old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.The diaphgram may look good and flexible, but it can be deceiving and not act as a fuel pump as it should because it has become too hard and will cause hard starting,start and run and shut off, etc.
When you clean your carburetor, I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.Be sure to use COMPRESSED AIR to blow out all the fuel and air passages.The higher air pressure is needed to blow some of the trash/debris from the fuel or air passages.Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit, or you could also ask the parts man that you get your kit from.When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.Be sure to mark the turns down on a piece of paper.That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their original position before you started.Once you have your carburetor cleaned/rebuilt that should solve your problem.Please take time to rate me Bud

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Gas models that start will a pull rope include a primer bulb to deliver a gas and air mixture to the carburetor to start the engine. Primer bulbs that have cracks or tears in them need replacing to start a gas leaf blower.
A primer bulb is important because it helps to fill the carburetor with the correct amount of fuel. You may need to fix or replace your primer bulb if: It is not creating proper suction/pressure. It has a crack in it. It is not creating pressure when you press it.
One way to see if you need primer is if it just looks like there`s not enough. A good priming job you won`t be able to see much of the previous color but if its too thin you`ll easily be able to see the old paint job. This is a great and easy way to get the right amount of primer.
Without a coat of primer, you`re looking at a splotchy paint job. Applying primer prior to painting drywall will give your finished wall an even, clean look.
ANSWER: The primer bulb, which is located in the fuel line between the gas tank and the engine, is used to fill the carburetor with fuel when the engine is started cold.
Once the engine is running, the feed pump produces a suction that draws fuel through the bulb valves. Without the fuel coming in through the bulb, this feed pump cannot work properly. The use of the primer bulb is therefore crucial.
There are different types of gasoline primer bulbs, all of which contain various types of valves inside. Sometimes these bulbs become so hard it`s difficult to squeeze them; sometimes even though you can squeeze them, they pump poorly, if at all.
Since the primer bulb is now not pressurized, if you pumped it, you would be able to do that. It would get firm for a short period and then loose pressure and return to a vacuum state. This is perfectly normal. What is not normal is for the primer bulb to collapse either with the engine running, or not running.
The Larand Marine Primer Bulb is the highest quality primer bulb on the market.
HOW LONG DOES IT TAKE FOR PRIMER TO DRY? Most latex primers dry to the touch in 30 minutes to one hour. But for best results, don`t paint until the primer completely dries—which can take up to 3 hours, depending on temperature and humidity. Once the primer is completely dry, it`s prime time for painting.
ANSWER: The primer bulb, which is located in the fuel line between the gas tank and the engine, is used to fill the carburetor with fuel when the engine is started cold.
The primer coat doesn`t have to be perfect, but it should cover the surface (no bare spots) and it shouldn`t be so blotchy that you get drips or visible unevenness.

Discover Relevant Questions and Answers for Your Specific Issue

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Why won’t the Prime bulb fill on blower and how to fix?

What else should i try
ANSWER : Make sure lines are connected correctly. On the back of primer it is stamped In & out

Troybilt trimmer primer bulb collapses. it will start occasionally but will only run a few minutes.i have replaced the primer bulb and gas lines and still have the same problems.
ANSWER : It should have a small vent in the fule tank cap if its blocked the primer bulb will be sucked in as the fule pump can **** any fule from the tank
check the tank cap first,,,,,

After about third pump bulb stays in it’s my neighbors line trimer i replaced the gas line. it was not there. i think i ran the line right.
ANSWER : Check out this sketch.

Primer wont work fs45
ANSWER : Rebuild carb

ANSWER : The check valves in the plastic pump housing under the primer bulb are bad. Usually caused by cleaning with carb and choke cleaner. The part is available from any echo dealer. Most shops have a junk box full of them,, just ask

I have a Craftsman Gold 6.0 mulching mower with a B&S engine on it that has been idle for about 10 years. It was only lightly used before that and I ran the gas tank dry before putting it away. Today I put gas in the tank pressed the primer bulb 3X and pulled the cord a few times without it starting. I noticed gas dribbling out of the little hole in the center of the primer bulb. It continuously drips and the gas is puddling on the top deck of the mower. Is this likely a problem with the primer bulb or something else? Thanks.
ANSWER : Sounds like the primer bulb dry rotted from sitting &/or the float is stuck in carb. If gas is indeed leaking from bulb. It will need to be replaced. While it is apart, clean carb inside & out with spray carb cleaner.

Need to replace primer bulb and fuel lines, is there a digram that shows the connections?
ANSWER : Http://