With that being said could it still be that the carburetor needs to be rebuilt? Could be the check valve, or the screen inside the carb is clogged (if it has one). When the primer won't prime, the engine won't run. Uncle Knuckle LawnSite Senior Member. 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. Punctured or torn primer bulbs will not prime the motor. Wade_b, thx for the info. I still feel like this situation is a problem with the carburetor itself. When pressed it draws gas from the tank and lets it in to the carburetor. 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. Inspect the primer bulb itself. The other line is just to pump the fuel back into the tank. Its like sugar dissolved in iced tea- you know its there but you can't see it because it is in solution. Tina. 4. I've got an update as well that may hopefully help in identifying the issue. I only use fresh, non-ethanol fuel mix. Engine rough then primer bulb won't fill. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. 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. Could be the fuel line (collapsed or swelled shut). 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. It's what you learn after you know it all that counts. Primer bulb won't fill; Primer bulb won't fill. The same goes for fuel lines. M. mandy. 5. 4 years ago. Hopefully this could help. The primer bulb can’t suck it up without removing it. A primer bulb that's lost its suppleness doesn't respond as a new one does. I don't know why my link didn't attach. The very small passages in the carb may need to be cleaned out with a … Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. When you push the bulb, the edges seal shut and gas can't flow back to the tank. F. Foreverwood OP member Foreverwood OP member. I understand the concern that your having since it seems that you have double checked your work on the repair. It does this by pulling fuel through the fuel line. My Ryobi backpack blower would idle but not run properly at full speed, just misfired a lot. 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. 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. Any ideas? Motor run capacitor 919167312 Craftsman Air compressor, Craftsman 8 pc. Will let you know what I find. Most likely, the gas is getting blocked at the source. 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. Hopefully today I can take a look at it--will remove filter 1st and try. Its not a lot but at one point it put out about 20 droplets onto the ground. Clean the carburetor and primer bulb components. With the arrow pointing to the side where you pulled the hose off. Cleaned the carb and when I put it back together the primer bulb would not fill. 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. Check this web site and look at the illustrations. Husqvarna vs craftsman are they interchangeable? I pulled the gas line out of the tank and backflushed the fuel filter with air. It basically just walked me though disassembling, cleaning and reattaching the carburetor. 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. Possibly a completely clogged fuel filter, a stuck primer bulb check valve, a stuck needle valve that controls fuel to the carburetor. 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. 4.7 out of 5 stars 44. U. 02/19/2012 07:23 PM DHodges34 Posts: 1779 Joined Forum: 07/31/2003. HURI 15 Primer Bulb for Echo Trimmer Weedeater SRM 225 230 260 GT210 225 12538108660. When pushing the primer bulb, the gas just squirts … It made it past the fuel filter so it must be fine stuff. I don't condone parts replacement for the sake of parts replacement. Diagnose first before replacing any parts. Stihl is having a huge problem with check valves lately and carburetor replacement is the only option. If the … That was my next adventure considering so far this thing has cost me nothing. Fortunately, replacing the primer bulb is very easy to do. Loosen and replace the fuel tank cap if the fuel level is normal. I have a sears/poulan edger #358.797450. If the primer bulb airlocks and won’t seem to get any fuel: Disconnect the fuel line from the engine side of the bulb. 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. A plugged fuel filter can do the same. Piston and cylinder looks great from what I … Replace them if they are even slightly suspect. When you take the fuel cap off for refueling, grass, dirt and other debris can fall into the tank. If not, you can stop by an auto parts store and pick up a can of spray carb/choke cleaner to clean the carburetor. At this point, it's pure speculation since no testing has been performed. It can't perform this function when it collapses; if this happens, you may find your trimmer impossible to start. Your question was published, help is on its way! Posted via Mobile Device . That leaves just the carburetor as being the problems. No the first thing you do is replace the primer bulb with a brand new one. 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. 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. 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. Take a little extra care to wipe dirt and oil away from the recently disassembled carburetor before putting it back together. Since I have been able to get it to start randomly but not consistently and it only runs briefly. The plate with four screws attached is your metering valve side. I just replaced both fuel lines on my weed eater after 6 years of use. Get more answers from the people in your networks. will_beames. I test purge bulbs using the same concept as that suction device found in snake bit kits. I am completely stuck. FREE Shipping on orders over $25 shipped by Amazon. Have you tried taking the carburetor apart and clean it? I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). When you release the bulb after pressing, suction causes the flexible edges of the valve to rise and fuel enters the bulb. I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. 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. I just put a new carburetor on it but it won't prime & start. 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). On these carbs, there is a plate on top and on the bottom of the carb. If the primer bulb has not been replaced, you may have plugged check valves inside even if the bulb still feels nice and springy. Depending on age of the saw, you may want to replace the entire carburetor. Remove the filter and repeat the test. Many string trimmers have Walbro carburetors. If a carb.-mounted primer doesn't fill, it could be the primer plate is NG. Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! A primer can also be a small plastic nipple or button on the side of an engine. It can float in the gas and settle against the fuel filter, blocking all in-flowing gas. You must log in or register to reply here. Get it as soon as Tue, Dec 22. Print this topic. 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. 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. Sometimes a primer won't fill, but the engine will still run ok - rare, but it happens. It is blocked by debris that is DISSOLVED in the fuel. Thx for the link. 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. 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. One shows the primer bulb pushed and the red is fuel, the blue air. Get shopping advice from experts, friends and the community! There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. 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! Contact options for registered users. Clamping one line off at a time and pumping it does help tell you the condition of the primer check valves. This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. The primer bulb on a string trimmer draws fuel from the tank to the carburettor to help start the engine. posted 1 year ago. Install the new primer bulb. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. Arrives before Christmas Only 10 left in stock - order … It doens't take much as all. I didn't see the link that you stated was below, can you repost it? Trimmer runs great as long as I feed it gas with it. 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. I usually recommend the no-cost checks & tests first to rule them out. The priming bulb on your Weed Eater supplies fuel to the carburetor when the engine is cold. A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. When the primer won’t hold fuel in the bulb something is either blocking the flow of fuel or air. I'll attach it again onto this post. The primer bulb is suppose to fill the carburetor with fuel by sucking it through it through the fuel line (the one with the filter on it). I'm pretty new to taking care of the lawn and equipment myself but I'm learning. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. 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. Check valves are non-serviceable and replacement of the valve body is the only fix. So, I took it apart, removed the carb etc. JavaScript is disabled. 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). Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. For a better experience, please enable JavaScript in your browser before proceeding. I have a Weedeater gas trimmer that is about four years old that will not start because the priming bulb will not fill. 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. Check the fuel lines for any hardening or cracking. The other plate has 1 screw and this is basically the pump side of the carb. Could be the fuel filter. Clamping off both lines an pumping the primer isn't a test we use. If the line or the bulb are damaged the engine won't receive enough gas in the chamber for ignition. Thu, Aug 15, 2019 12:27 AM. Does it sound like the fuel lines are on backwards? Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. 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. This article provides step-by-step instructions for removing and installing the primer bulb on an Echo SRM-225 trimmer. For the T242, the primer bulb can be pressed into place in the mount plate from which the old bulb came. I've got a Stihl Weedeater that I've had for about 18 months. Next day I got it to crank but it only stays running if I press the primer bulb. This small plastic bulb and attached line can get clogged or kinked. Through this site I found some links to cleaning the carburetor. 95. The priming system must be … Over time, the primer bulb may begin to deteriorate or crack. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. Get shopping advice from experts, friends and the community! You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. 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. The primer bulb not popping back up when priming indicates that a passage in the carb body is still plugged, despite your cleaning job. While you wait for an expert reply, I did some research on your question & found a link that provides a video. 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. 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