With the arrow pointing to the side where you pulled the hose off. Tina. One shows the primer bulb pushed and the red is fuel, the blue air. I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). F. Joined: Jul 2010 Posts: 153 Florida,USA: My primer bulb was changed about a week ago and did not fill with gas when primed. posted 1 year ago. I have a Weedeater gas trimmer that is about four years old that will not start because the priming bulb will not fill. Does it sound like the fuel lines are on backwards? Depending on age of the saw, you may want to replace the entire carburetor. It sounds like the fuel lines and bulb are fine. Arrives before Christmas Only 10 left in stock - order … 95. Topic Title: Weedeater Troubleshooting Topic Summary: Primer bulb won't fill, stays compressed Created On: 02/19/2012 07:23 PM: Linear: Threading: Single: Branch: Topic Tools. Any ideas? Prior to this the last few times it seemed like the primer bulb wasn't working right as it wouldn't fill up with fuel but this time it seems like it is. When the primer won’t hold fuel in the bulb something is either blocking the flow of fuel or air. Remove the filter and repeat the test. Check valves are non-serviceable and replacement of the valve body is the only fix. I have a sears/poulan edger #358.797450. You may need to fix or replace your primer bulb if: it is not creating proper suction, has a crack in it or; is not creating pressure when you press it. $7.95 $ 7. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. Your question was published, help is on its way! Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! I'll attach it again onto this post. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. 4. When pushing the primer bulb, the gas just squirts … That leaves just the carburetor as being the problems. It started and ran for about a minute but when I tilted the weed eater towards the trimmer side or the engine side it would start to sputter. Engine rough then primer bulb won't fill. Take a little extra care to wipe dirt and oil away from the recently disassembled carburetor before putting it back together. Get it as soon as Tue, Dec 22. Its like sugar dissolved in iced tea- you know its there but you can't see it because it is in solution. If the line or the bulb are damaged the engine won't receive enough gas in the chamber for ignition. Wade_b, thx for the info. Its not a lot but at one point it put out about 20 droplets onto the ground. Hopefully today I can take a look at it--will remove filter 1st and try. Check the fuel lines for any hardening or cracking. Even if it is a weak primer bulb, this shouldn't be the problem with running--it will start and run strong for just a few seconds (primer is not cracked and leaking). I only use fresh, non-ethanol fuel mix. Through this site I found some links to cleaning the carburetor. Since I have been able to get it to start randomly but not consistently and it only runs briefly. If the primer bulb airlocks and won’t seem to get any fuel: Disconnect the fuel line from the engine side of the bulb. Contact options for registered users. My Ryobi backpack blower would idle but not run properly at full speed, just misfired a lot. While you wait for an expert reply, I did some research on your question & found a link that provides a video. Loosen and replace the fuel tank cap if the fuel level is normal. Primer bulb won't fill until starter fluid is used #726125 08/31/12 12:45 AM 08/31/12 12:45 AM: Joined: Jul 2010 Posts: 153 Florida,USA. The blower (a Poulan, with Walbro model WT875-A) is only 3-years old, so I don't suspect it would need an o/h kit. 4 years ago. Also before I replaced the fuel lines there wasn't really a problem with the carburetor and it would pump in and out fuel fine. Clamping one line off at a time and pumping it does help tell you the condition of the primer check valves. You must log in or register to reply here. The fuel line closer to this is your fuel return or exit side going to the primer bulb and from the primer bulb back to the fuel tank. That was my next adventure considering so far this thing has cost me nothing. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. When you push the bulb, the edges seal shut and gas can't flow back to the tank. The primer bulb can’t suck it up without removing it. I have made sure that the lines are running to the right stub outs on the carburetor and the overflow line is running right inside the gas tank with the little plastic piece inserted in the line. The very small passages in the carb may need to be cleaned out with a … Inspect the primer bulb itself. Could be the fuel line (collapsed or swelled shut). If not, you can stop by an auto parts store and pick up a can of spray carb/choke cleaner to clean the carburetor. It does this by pulling fuel through the fuel line. When the primer won't prime, the engine won't run. Punctured or torn primer bulbs will not prime the motor. A plugged fuel filter can do the same. No the first thing you do is replace the primer bulb with a brand new one. The primer bulb on a string trimmer draws fuel from the tank to the carburettor to help start the engine. Thx for the link. A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Get more answers from the people in your networks. When it does run, at least the couple of times I have gotten it to it is spitting out I assume gasoline from the muffler. Next day I got it to crank but it only stays running if I press the primer bulb. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. why wouldn't a weedeater run if it don't prime up with gas, My weedeater doesnt have a pump to the tank, all it has is one line from tank to carb, looking for manual for craftsman metal saw 101-22960. If a carb.-mounted primer doesn't fill, it could be the primer plate is NG. I've got an update as well that may hopefully help in identifying the issue. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. Could be the fuel filter. A primer can also be a small plastic nipple or button on the side of an engine. Clamping off both lines an pumping the primer isn't a test we use. I just replaced both fuel lines on my weed eater after 6 years of use. U. It basically just walked me though disassembling, cleaning and reattaching the carburetor. The same goes for fuel lines. I usually recommend the no-cost checks & tests first to rule them out. It made it past the fuel filter so it must be fine stuff. Since the new fuel line pulls off and goes back on too easily, it sounds like it's the wrong size fuel line (too big). I double checked to make sure the plug has spark which it does and can pull many times with the choke on and i can see fuel spitting out of the exhaust and still not even a hint of combustion. Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. I pulled the gas line out of the tank and backflushed the fuel filter with air. It can't perform this function when it collapses; if this happens, you may find your trimmer impossible to start. Thu, Aug 15, 2019 12:27 AM. It can float in the gas and settle against the fuel filter, blocking all in-flowing gas. JavaScript is disabled. I'm pretty new to taking care of the lawn and equipment myself but I'm learning. For a better experience, please enable JavaScript in your browser before proceeding. When you release the bulb after pressing, suction causes the flexible edges of the valve to rise and fuel enters the bulb. Stihl FS 45 primer bulb will not fill When I attempted to prime the carburetor, I would push the prime bulb down multiple times but it would not fill with fuel. Primer bulb won't fill; Primer bulb won't fill. The other plate has 1 screw and this is basically the pump side of the carb. At this point, it's pure speculation since no testing has been performed. When pressed it draws gas from the tank and lets it in to the carburetor. Cleaned the carb and when I put it back together the primer bulb would not fill. If the diaphragms in the carb have gotten hard (age and fuel cause this) then the fuel cannot flow through the carburetor as it should. Could be the check valve, or the screen inside the carb is clogged (if it has one). The plate with four screws attached is your metering valve side. A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. will_beames. I understand the concern that your having since it seems that you have double checked your work on the repair. There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. In the former case, where the bulb doesn't pop up, the inlet screen in the fuel pump side of the carburetor is usually blocked. If the … Get shopping advice from experts, friends and the community! Sometimes a primer won't fill, but the engine will still run ok - rare, but it happens. The priming system must be … I don't condone parts replacement for the sake of parts replacement. This small plastic bulb and attached line can get clogged or kinked. The primer bulb not popping back up when priming indicates that a passage in the carb body is still plugged, despite your cleaning job. F. Foreverwood OP member Foreverwood OP member. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. With that being said could it still be that the carburetor needs to be rebuilt? Check this web site and look at the illustrations. I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. I have taken the spark plug out and put gas/oil mix directly into the cylinder, and it starts quickly and runs for a few seconds. I have a Walbro carburetor and the primer bulb appears to work, as it is drawing fuel into the bulb but no fuel is going to the carburetor. 5. For the T242, the primer bulb can be pressed into place in the mount plate from which the old bulb came. I do think I would still get a carburetor rebuild kit and replace the diaphragms though. 4.7 out of 5 stars 44. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. On these carbs, there is a plate on top and on the bottom of the carb. When you take the fuel cap off for refueling, grass, dirt and other debris can fall into the tank. Clean the carburetor and primer bulb components. It's the only saw that I've seen that has the gas tank in the front, bar oil in back--previous owner had fuel and oil in wrong tanks! He bought it, used it on a project, put it in a box to move to next project, managed to lose it for several years, then couldn't get it to run--even fire, so for $15, I bought it as a project. I don't know why my link didn't attach. The priming bulb on your Weed Eater supplies fuel to the carburetor when the engine is cold. This article provides step-by-step instructions for removing and installing the primer bulb on an Echo SRM-225 trimmer. So I followed the steps and can now pump gas into and out of the overflow and was able to get the weed eater to start but only briefly. Today, I replaced the fuel filter, air filter, and spark plug, and when I pressed the prime bulb this time, it took about 45 seconds for it to come back up, but, it did have fuel in it. Hopefully this could help. Get shopping advice from experts, friends and the community! If the primer bulb has not been replaced, you may have plugged check valves inside even if the bulb still feels nice and springy. Have you tried taking the carburetor apart and clean it? A primer bulb that's lost its suppleness doesn't respond as a new one does. I've got a Stihl Weedeater that I've had for about 18 months. May 28, 2015 #2 A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Over time, the primer bulb may begin to deteriorate or crack. Most likely, the gas is getting blocked at the source. Posted via Mobile Device . 02/19/2012 07:23 PM DHodges34 Posts: 1779 Joined Forum: 07/31/2003. Trimmer runs great as long as I feed it gas with it. Husqvarna vs craftsman are they interchangeable? I didn't see the link that you stated was below, can you repost it? Fortunately, replacing the primer bulb is very easy to do. Print this topic. Diagnose first before replacing any parts. The other line is just to pump the fuel back into the tank. I just put a new carburetor on it but it won't prime & start. I am completely stuck. That's because the collapse, which may be due to the bulb itself, can also signify a blockage in the line leading to the bulb from the fuel tank. Install the new primer bulb. Replace them if they are even slightly suspect. Uncle Knuckle LawnSite Senior Member. It is blocked by debris that is DISSOLVED in the fuel. Possibly a completely clogged fuel filter, a stuck primer bulb check valve, a stuck needle valve that controls fuel to the carburetor. Piston and cylinder looks great from what I … It's what you learn after you know it all that counts. So, I took it apart, removed the carb etc. Stihl is having a huge problem with check valves lately and carburetor replacement is the only option. Motor run capacitor 919167312 Craftsman Air compressor, Craftsman 8 pc. M. mandy. Many string trimmers have Walbro carburetors. It doens't take much as all. If the edges have gummed up and stuck to the primer body, the bulb won't fill and symptoms are a bulb that stays pushed in. 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