I let the carb absorb the mix and let it sit. With the water in the fuel or water absorbed into the ethanol, I've begun to see the tiny springs on the check balls become rusty and stop working. The only one I've seen offered so far is the orange. http://www.youtube.com/watch?v=uCC1qO75zDk. 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". There is another check valve in the carb Idle circuit. I tried a hodge podge elixir of different fluids in the past to clean and/or remedy stuck check valves. Need help identifying proper cable for Black and Decker hedge trimmer. If fuel is making it to the primer/purge bulb, then fuel is ALREADY in your carburetor. It is the easiest way to use a lawn mower, and many users swear by it. I had fuel supply line and fuel return lines connected and liberally sprayed inside them. Poulan Genuine OEM Replacement Bulb # 530058709. Not sure how I will get the hose reconnected. 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). 358.350880. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. Problem is, that may NOT be your problem. If the new carb actually is NOT drawing fuel, then there probably is a stuck check valve in the Idle Circuit or the Main Nozzle. FREE Shipping on orders over $25 shipped by Amazon. These steps will be similar for other engine designs that mount primer bulbs on the engine's carburetor, but not … This in addition to the clogged screen. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. 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. £9.79. On that carb, when you pressed on the bulb, it became hard as a rock and like yours no fuel entered the carb. You could pressure test the carb with some compressed air too if you wanted. Craftsman Lawn tractor. When the primer won't prime, the engine won't run. Besides replacing fuel lines and primer bulb I also replaced fuel filter. 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. 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. These are very small and unlike the one under the bulb. From what I've seen on here, I'm not alone in the starting issues. 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. If that valve is leaking; as I have stated befor the symptoms will be identical to what you are experiencing. When you release the rope, the tabs should retract and the rope should rewind back on the pulley. "Yes, same model no. Lot of 5 Poulan Zoro Walbro 530047721 Husqvarna Primer Bulb Craftsman Weed Eater. 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. Below are the steps for replacing a primer bulb on a Shindaiwa T242 trimmer. Husqvarna Grass trimmers are provided with an auto return stop switch. When I put fuel in it and tried to prime, it would not draw fuel. 99. Baymee Your pics are legendary on here.Could you try to find them and post them? Aren't they made of mylar or something like it? $6.71 New. I send my want to be customers to the Best I know, I Have Retired ! They would have not lived long on ethanol . 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. Mark T: I reconnected the fuel lines as you instructed and the problem is solved. This post was edited by homegrown55 on Sat, Aug 24, 13 at 16:25. Your question was published, help is on its way! 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. Many of those blower carbs do not even have a main nozzle, just the 2 or 3 ports in the throat. It is present on the carburetor, and all you have to do is to press it like a button to start your lawn mower. 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 . The purge/primer bulb on my poulan chainsaw is damaged. $6.99 $ 6. The primer bulb fills and the trimmer starts up 2-3 pulls! £11.55. 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). The Echo ran great! Runs for about 20 minutes and then stops running. 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. The last one I did was an OLDER Zama Rotary carb on an Echo Power Edger. The push bulb primer sits on the outside of the carburetor and the automatic primer works from within it. 4.6 out of 5 stars 176. Posted via Mobile Device . Attached. After it cool for 20 minutes it starts again. if there is crack line it will suck air and not pull the fuel up to the carb.? First I will get to the immediate need and then the general questions. Primer Bulb on Carburetor Repair Steps Primer bulbs mount directly on the carburetor for many small engine designs. Check the Primer Bulb for Holes. If not you may have small crack or collapsed fuel line. 2. compressed air to do ANY cleaning inside these carbs as you could easily blow out or dislodge one of the sensitive check valves. As to taking the carb apart I am hesitant to affect the warranty if it is, indeed, a defective part. 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. I know that your business is oriented toward chainsaws but my question relates to carburetors. I feel that testing verified fuel in the carb or not. Do not use high p.s.i. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. Zama Carb leak, bulb not "filling" elastomers, cleaning, etc Husqvarna 125L? Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. homegrown...the checks in the primer section of the carb is where the ball and spring rusted. Get it as soon as Mon, Jan 11. Removing purge/primer bulb altogether. I was advised to replace bulb and fuel lines. The question is, is it worth your time not to mention others? Please no repair questions. I only use fresh, non-ethanol fuel mix. It seems Husqvarna should … 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. Tinkering with it at 2-week intervals, I find I just don't have the time right now. $2.99 New. My 128CD started having the same issue after 10 yrs of use. The most common reasons for replacing the primer bulb are if it is not pumping gas into the carburetor, or if the leaf blower will not start. The bottom line, there is always a solution or why the sys etc is not working. A look at these carbs and HOW they operate is a must see read if you are going to work on them. Then the larger line from the carburetor should connect to the short port on the primer. I'm thinking of elimina... Echo 2100 power blower, primer bulb wont fill with fuel. Questions & Answers for the Husqvarna 503936601 Ask us about the Husqvarna 503936601 Primer Bulb. Husqvarna Purge / Primer Bulb, 530047721 at Tractor Supply Co. I learned the hard way....never blow compressed air into that area unless greatly reduced. baymee,I'm not seeing any signs of rust, But as stated above, I will take it apart and watch for that. Free postage. Baymee....On what carbs did you observe the tiny springs and check balls? How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. 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. homegrown55,"What is the make and model of the new carb? Still not filling with gas! After replacing bulb and fuel lines it still will not draw fuel. The primer on your machine is one of two types: push bulb or automatic. You would need “ship in a bottle” building skills to reconnect! 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? The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. 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. Ideally, No fuel can enter the engine until a vacuum is put upon the carburetor during the startup process. The primer ball never fills with fuel, so the saw is starved for gas. While some machines have a choke plate, others have a primer bulb made out of rubber. I would suggest saturating the primer base ports top and bottom with some carb cleaner and/ or some WD-40. I'm stumped. 1.See if the youtube info at the link below will help you troubleshoot. Learn more. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. 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. Crumble in in you hands what submerged in the alcohol in few short years. One symptom is that the primer bulb doesn't return when pushed in. This way your grass trimmer will be ready for use again, whenever you are. Without the primer bulb, the starter cord would have to be pulled loads of times before the fuel lines and carburetor fill up. $6.45 New. Another cause of the primer's filling problem could be the bulb itself. 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! That will end the carb's ability to DRAW fuel using the primer bulb as it performs on vacuum and that is lost with a bad check valve. The primer/purge bulb will NOT function correctly. U. From what it sounds, you have a failed or sticking check valve in the primer base assembly below the bulb. Podoy Primer Bulb for Compatible with Husqvarna 345 346 350 353 850 Stihl Craftsman Poulan Chainsaw 455 Rancher 460 445 450 435 Replace 503936601(Pack of 10) 4.6 out of 5 … It had the RB-75. It works by squirting fuel into your engine. Tipiford We received that post earlier today...this morning as matter of fact. Faulty Primer Bulb. If you don't post back in the future with an update we will NOT know why the Walbro carb malfunctioned. I agree with Baymee within the ethanol issues being the basic if not contributing cause of your prime / purge bulb issues. What is a Primer Bulb? 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. Have a two year old Craftsman chainsaw model no. The small checks just don't function well when stored for prolong periods or run more than 3-5 yrs on this new corn fuel . This post was edited by homegrown55 on Fri, Aug 23, 13 at 20:06. did you replace the fuel lines and the filter in the tank or at least clean the filter? Or do these come as a part of a carb kit? All of the information in this primer bulb replacement video is applicable to following brands: Husqvarna Tools used: T-27 Torx … Inside the nozzle is a check valve. No shocker there. I presume it is a Walbro? 5pc Petrol Snap in Primer Fuel Bulb Pump for Ryobi WALBRO HUSQVARNA ESUS. homegrown55 (message 2),We used very low air pressure in cleaning. Proper passage and firing could be another chapter/challenge. It means that when the machine is turned off, the stop switch automatically returns to the start position for easier starting. Clip in Primer Bulb Replaces 4130-350-6200 (Aftermarket) $11.07. If a carb has had a long shelf life, the check valves could be stiff, but they should still function after fuel hits them. Pics of the primer base internals would shed a LOT of light on this common problem. Is there a difference between the black and orange valves? Make offer - Lot of 5 Poulan Zoro Walbro 530047721 Husqvarna Primer Bulb Craftsman Weed Eater. That has the fuel lines and primer bulb... he seems to pulled. Come as a part of a carb kit and experimenting of the new carb is bad hands what submerged the. 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