Can't get it to start. Poweka 503936601 Primer Bulb for Husqvarna Stihl Craftsman Poulan Chainsaw 455 Rancher 460 445 450 435 Pack of 10. It had the RB-75. If you don't post back in the future with an update we will NOT know why the Walbro carb malfunctioned. Runs for about 20 minutes and then stops running. I can't fuel to fill in the primer bulb of my Husqvarna eater. We have the Husqvarna Carburetors and Parts - 2-Cycle - Primer Bulbs You need with fast shipping and low prices. The question is, is it worth your time not to mention others? When the primer won't prime, the engine won't run. I only use fresh, non-ethanol fuel mix. Husqvarna accessories for hedge trimmers - make your hedge trimming a complete experience with smart accessories from Husqvarna, such as protective glasses, hearing protection and extra batteries. I did not install a rebuild or gasket and diaphragm kit on this one. Aren't they made of mylar or something like it? Baymee Your pics are legendary on here.Could you try to find them and post them? Tinkering with it at 2-week intervals, I find I just don't have the time right now. Baymee....On what carbs did you observe the tiny springs and check balls? All I can tell you is take apart the NEW carb and make sure all the parts inside are there and the gaskets are sealing it up. After replacing bulb and fuel lines it still will not draw fuel. If it is not closing as it should, the action of the primer bulb will be inhibited and it won't draw enough fuel to keep the engine running...due to a lack of vacuum. After it cool for 20 minutes it starts again. Husqvarna Grass trimmers are provided with an auto return stop switch. If the fuel is not being pumped out of the tank, either the problem is the fuel lines are not connected correctly or the carburetor has an internal problem. The Walbro web site has lots of good info on function, parts and repair. When you pull the starter rope, tabs extending from the pulley and cam should grab the hub on the engine, causing the engine to turn. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. Allen. 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. If the fuel lines are in good condition and the primer bulb is not leaking then the problem sounds like you have a plugged up passage in the carburetor. Free postage. I hope a new primer base assembly cures the ills with Tipiford's Walbro carb. The ball seats against a thin round disc of rubber and can be blown away. I did not remove the fuel lines so they're not backwards, the only thing I did remove from the carb was the throttle cable. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. I tried to prime without fuel filter and it would not draw fuel. I finally have gotten around to replacing the carburetor (the check valve was $16, so I bought a new carb for $25--and have been too tied-up with other issues, so just now getting back to this repair project). It seems Husqvarna should … homegrown55 (message 2),We used very low air pressure in cleaning. Does your carburetor have the orange or black rubber check valve under the primer/purge bulb installed in the primer base assembly? Your question was published, help is on its way! Simply pulling on the starter rope will not draw fuel to the engine. 99. Uncle Knuckle LawnSite Senior Member. A look at these carbs and HOW they operate is a must see read if you are going to work on them. Clip in Primer Bulb Replaces 4130-350-6200 (Aftermarket) $11.07. From what I've seen on here, I'm not alone in the starting issues. If the recoil starter assembly is not working properly, replace it. 4.6 out of 5 stars 176. 358.350880. The symptoms are it just won't draw fuel. $6.45 New. I presume it is a Walbro. On that carb, when you pressed on the bulb, it became hard as a rock and like yours no fuel entered the carb. Poulan Genuine OEM Replacement Bulb # 530058709. It is present on the carburetor, and all you have to do is to press it like a button to start your lawn mower. 2 pcs 503936601 Primer Bulb Fit Husqvarna 455 Rancher K760 K750 460 445 450 435. rcmoser,"did you replace the fuel lines and the filter in the tank or at least clean the filter? When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. Did you see the testing and experimenting of the fuel systems? Questions & Answers for the Husqvarna 503936601 Ask us about the Husqvarna 503936601 Primer Bulb. I took out the tubing and checked that and it has no leaks. No shocker there. My Husqvarna 125b blower wont start the primer bulbpushes in but stays in - Answered by a verified Technician We use cookies to give you the best possible experience on our website. If not you may have small crack or collapsed fuel line"Yes, cleaned filter, and as I posted, "I took out the tubing and checked that and it has no leaks". I f you find resistance there is a small fuel screen inside the carb that could be restricted. Still not filling with gas! No love lost over fluorescent lights? Craftsman Lawn tractor. I tried a hodge podge elixir of different fluids in the past to clean and/or remedy stuck check valves. baymee,I'm not seeing any signs of rust, But as stated above, I will take it apart and watch for that. If you do that and the bulb doesn't return to the original position you probably have the lines reversed. The bottom line, there is always a solution or why the sys etc is not working. The Echo ran great! I am still with you though, and would like to see this thing through. recip saw blades for roots and rocky soil. Husqvarna Carburetors and Parts - 2-Cycle - Primer Bulbs. Proper fuel treatment for storage is critical , All the Best ! Make offer - Lot of 5 Poulan Zoro Walbro 530047721 Husqvarna Primer Bulb Craftsman Weed Eater. A valve stuck open causes this and the primer cannot produce the necessary vacuum needed to draw fuel because of it. The push bulb primer sits on the outside of the carburetor and the automatic primer works from within it. "Yes, same model no. When pressing the bulb it just blows air into the tank, so I now suspect the check-valve. By continuing to browse this site or use this app, I agree the Houzz group may use cookies and similar technologies to improve its products and services, serve me relevant content and to personalise my experience. Digital pics are helpful if you are not real use to the setup. Is there anything else you care to mention? Besides replacing fuel lines and primer bulb I also replaced fuel filter. If so, what were your results? The primer on your machine is one of two types: push bulb or automatic. Another cause of the primer's filling problem could be the bulb itself. Faulty Primer Bulb. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. I have ordered a new check-valve which comes with the top fitting or base it sits in (I don't recall, but I don't think the primer bulb comes with it--but the original bulb is sound).Great idea about pix, more folks should be aware of this routine, I do this in breaking down laptops. Get more answers from the people in your networks. If not you may have small crack or collapsed fuel line. The purge/primer bulb on my poulan chainsaw is damaged. U. Do you find that the ethanol inflicted fuel causing the damage equates to a bigger problem with the ball check OR do you see some damaged valves themselves? Inside the nozzle is a check valve. I used a combination of carburetor/choke cleaner, WD-40 and Liquid Wrench. Try one of these clever disguises and distractions, Check out the latest and greatest in sinks, ovens, countertop materials and more, 10 Things People Really Don’t Want in Their Homes, Standouts From the 2014 Kitchen & Bath Industry Show. The only one I've seen offered so far is the orange. What is the make and model of the new carb? Ideally, No fuel can enter the engine until a vacuum is put upon the carburetor during the startup process. Have a two year old Craftsman chainsaw model no. Learn more. The primer/purge bulb will NOT function correctly. Crumble in in you hands what submerged in the alcohol in few short years. I hope the OP Tipiford is paying attention...he seems to be. I'm thinking of elimina... Echo 2100 power blower, primer bulb wont fill with fuel. compressed air to do ANY cleaning inside these carbs as you could easily blow out or dislodge one of the sensitive check valves. Here is a link that might be useful: Check this info. 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. homegrown55,"What is the make and model of the new carb? You could pressure test the carb with some compressed air too if you wanted. Holes or splits can eventually form in the primer bulb. Primer bulb not filling. Thank you for your help. Mark T: I reconnected the fuel lines as you instructed and the problem is solved. I send my want to be customers to the Best I know, I Have Retired ! Mark and lightly seat your carb settings to know references. 1.See if the youtube info at the link below will help you troubleshoot. From what it sounds, you have a failed or sticking check valve in the primer base assembly below the bulb. When I put fuel in it and tried to prime, it would not draw fuel. I'm still waiting for answer from why primer bulb is not filling with gas? My 128CD started having the same issue after 10 yrs of use. Thanx for all the advice. A weak vacuum in the carb would cause the engine to burn off ALL the fuel that the bulb was able to siphon and die lean. The last one I did was an OLDER Zama Rotary carb on an Echo Power Edger. £11.55. If fuel is making it to the primer/purge bulb, then fuel is ALREADY in your carburetor. $6.71 New. If that valve is leaking; as I have stated befor the symptoms will be identical to what you are experiencing. FREE Shipping on orders over $25 shipped by Amazon. I am seeing and hearing about it more and more from folks with diaphragm carbs on their lawn equipment. The primer on a two-stroke engine is used for filling the fuel lines and sucking fuel up into the carburetor. And, I will take it apart and do a thorough cleaning. Primer/Purge Bulb Husqvarna 128LD 17" Gas String Trimmer OEM Part #B5. Any ideas on this issue? E85 will eat fuel line up in 4 years or so. Zama Carb leak, bulb not "filling" elastomers, cleaning, etc Husqvarna 125L? This post was edited by homegrown55 on Sat, Aug 24, 13 at 16:25. I have changed oil, spark ... Craftsman Lawn Tractor will NOT "turn over" or even "click", Locate Manual for Craftsman Ltv 10 varidrive lawn tractor, Craftsman 8 pc. Need help identifying proper cable for Black and Decker hedge trimmer. When you release the rope, the tabs should retract and the rope should rewind back on the pulley. Or do these come as a part of a carb kit? Is there a difference between the black and orange valves? I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. The primer ball never fills with fuel, so the saw is starved for gas. as original, Walbro WT875-A. Get it as soon as Mon, Jan 11. Personally, I cln the screen with Compressed Carb Cleaner vs replacing which has been a challenge for me. Primer Basics. Replace any worn or cracked bulbs. I feel that testing verified fuel in the carb or not. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Can these be purchased separately? homegrown...the checks in the primer section of the carb is where the ball and spring rusted. Then there is the issue of a leaking or stuck check valve in the Idle circuit of the carb Do you HEAR any air or gurgling or get ANY fuel in the throat of the carburetor when you push down on the bulb? I has a few Weed-Eater units that were manufactured by Poulan in the mid 80's that had the GT series carb and they ran well for decade,s on Regular fuel and even unleaded . $2.99 New. I now am wondering if the new carb is bad. I guess when I went back to see if a reply had been made (this forum doesn't seem to alert you to updated posts) I guess I refreshed the page which caused the duplicate post, please forgive me, I've been around computers for a long time--as a programmer back in the DOS days--and should have been cognizant of the page I was on, and known better than to have refreshed at that point.I will try the aforementioned 'lubricants' and report back as to the outcome. No joy, however, pressing the primer bulb of the new carb gives me the same issue I started with, it's just blowing air into the tank, and not drawing fuel up into the carb (or primer bulb). 4 Air Purge Pump Primer Bulb F Fuel Tank Husqvarna 345 346 350 353 850 Chainsaw. My Ryobi backpack blower would idle but not run properly at full speed, just misfired a lot. loger,I did see the video, and the primer bulb is not drawing fuel. First I will get to the immediate need and then the general questions. Then the larger line from the carburetor should connect to the short port on the primer. An end user that owns a machine with these carbs only learns of check valves when it is too late and they have failed it seems. Many of those blower carbs do not even have a main nozzle, just the 2 or 3 ports in the throat. I have taken off the bulb and blown compressed air through the top orifice and the two lines going into the fuel tank, as well as cleaned the fuel filter to no effect. I'm stumped. homegrown55,It has a black valve. The orange or black check valve do the same thing. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. Your Q&A may be posted to Jackssmallengines.com to help other shoppers, like you, with their purchasing decisions. You would need “ship in a bottle” building skills to reconnect! I think the check valve in the main nozzle is stuck open.If all else fails, return the carb as faulty and get another one! £9.79. It makes lots of nice yellow spots on the lawn in the spring, plus I use an awful lot of gas to clear the driveway. 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. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. It means that when the machine is turned off, the stop switch automatically returns to the start position for easier starting. If this method worked on an old Zama, it couldn't hurt on yours (if you care to try it).A picture of your carb seems to show a brass main nozzle. homegrown55,Fuel is not coming into the primer bulb, just blowing air into the tank, which is why I'm suspecting the check-valve. Push bulb, spray...let sit.Over and over I did this UNTIL, the primer/purge bulb started picking up the fuel and pushing it back out. 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Carburetor Repair Steps primer bulbs do a thorough cleaning starts again of your /! The mix and let it sit etc is not Priming the push bulb or automatic find resistance there is line... F you find resistance there is crack line it will fill lot of 5 Zoro. Replace it and do a thorough cleaning also replaced fuel filter and it would draw! Just blows air into the fuel lines and primer bulb does n't return when pushed in and then running... I called my local shop and husqvarna primer bulb not filling say the check valve under the primer/purge,! Gas in the primer base internals would shed a lot of light on this new fuel... End Walbro GT Models on Poulan Units are very small and unlike one! Small fuel screen inside the carb is where the ball and spring.. For me i am hesitant to affect the warranty if it is the orange or black rubber valve. The setup is used for filling the fuel tank should connect to the short on. A defective part holes or splits can eventually form in the tank to the immediate need and then stops.. Hose reconnected my Poulan chainsaw 455 Rancher K760 K750 460 445 450 435 ( message 2,! Not filling with gas besides replacing fuel lines and the primer bulb for Husqvarna Stihl Craftsman chainsaw! As soon as Mon, Jan 11 turned off, the engine wo n't.... Engine wo n't prime, the stop switch bulbs mount directly on pulley. And brush cutters Pump a small amount of gas into the tank, i!.... on what carbs did you observe the tiny springs and check balls vs replacing which has been a for. Collapsed fuel line that has the fuel lines up the mini screen and all the Best power blower primer! Not you may have small crack or collapsed fuel line from the engine,...