It is the easiest way to use a lawn mower, and many users swear by it. Just found the fuel line FROM the tank to the primer bulb was broken and the connector is inside the tank. Is there a difference between the black and orange valves? Primer/Purge Bulb Husqvarna 128LD 17" Gas String Trimmer OEM Part #B5. 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. If you do that and the bulb doesn't return to the original position you probably have the lines reversed. 99. I used a combination of carburetor/choke cleaner, WD-40 and Liquid Wrench. The purpose of the primer/purge bulb is to DRAW fresh fuel from the tank into the carburetor (not the engine) and return any air and old fuel in the carb BACK to the fuel tank. 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. It starts fine and runs okay, but gas squirts out the vent hole in the middle of the primer bulb. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. E85 will eat fuel line up in 4 years or so. I tried to prime without fuel filter and it would not draw fuel. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. I agree with Baymee within the ethanol issues being the basic if not contributing cause of your prime / purge bulb issues. I presume it is a Walbro. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. 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? Mark T: I reconnected the fuel lines as you instructed and the problem is solved. If the recoil starter assembly is not working properly, replace it. Zama Carb leak, bulb not "filling" elastomers, cleaning, etc Husqvarna 125L? homegrown55,It has a black valve. I am still with you though, and would like to see this thing through. If you wanted to try one last thing, push the bulb down and hold your finger tight over the end of the line that goes back to the tank, then release the bulb. 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 learned the hard way....never blow compressed air into that area unless greatly reduced. 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. 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. 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. Check the Primer Bulb for Holes. From what it sounds, you have a failed or sticking check valve in the primer base assembly below the bulb. My 128CD started having the same issue after 10 yrs of use. While you are there you might as well flush all openings to know they are open. The symptoms are it just won't draw fuel. 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. The purge/primer bulb on my poulan chainsaw is damaged. If fuel is making it to the primer/purge bulb, then fuel is ALREADY in your carburetor. After replacing bulb and fuel lines it still will not draw fuel. If you don't post back in the future with an update we will NOT know why the Walbro carb malfunctioned. First I will get to the immediate need and then the general questions. 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. It works by squirting fuel into your engine. The only one I've seen offered so far is the orange. Problem is, that may NOT be your problem. What is a Primer Bulb? Husqvarna Purge / Primer Bulb, 530047721 at Tractor Supply Co. 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. Proper fuel treatment for storage is critical , All the Best ! 2. Get more answers from the people in your networks. Besides replacing fuel lines and primer bulb I also replaced fuel filter. "Yes, same model no. The primer bulb fills and the trimmer starts up 2-3 pulls! So, I took it apart, removed the carb etc. Learn more. Please no repair questions. From what I've seen on here, I'm not alone in the starting issues. 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. homegrown...the checks in the primer section of the carb is where the ball and spring rusted. Craftsman Lawn tractor. 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. 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. Nothing personal about posters not posting back; but it helps users like me to understand what happened along with others that search for answers on the forum. I know I have pictures of this, but I can't find them.....and I took them recently. 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. 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. I f you find resistance there is a small fuel screen inside the carb that could be restricted. Another cause of the primer's filling problem could be the bulb itself. It is present on the carburetor, and all you have to do is to press it like a button to start your lawn mower. £11.55. The primer/purge bulb will NOT function correctly. You could pressure test the carb with some compressed air too if you wanted. Attached. I called my local shop and they say the check valve is malfuctioning, and say to bring it in. Need help identifying proper cable for Black and Decker hedge trimmer. A valve stuck open causes this and the primer cannot produce the necessary vacuum needed to draw fuel because of it. I don't think the primer bulb itself is what's causing it to die, but may be a symptom of the real problem. All of the information in this primer bulb replacement video is applicable to following brands: Husqvarna Tools used: T-27 Torx … One symptom is that the primer bulb doesn't return when pushed in. Can't get it to start. Is there anything else you care to mention? Aren't they made of mylar or something like it? Questions & Answers for the Husqvarna 503936601 Ask us about the Husqvarna 503936601 Primer Bulb. I'm still waiting for answer from why primer bulb is not filling with gas? if there is crack line it will suck air and not pull the fuel up to the carb.? I hope a new primer base assembly cures the ills with Tipiford's Walbro carb. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. Another cause of the primer's filling problem could be the bulb itself. Faulty Primer Bulb. 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. The last one I did was an OLDER Zama Rotary carb on an Echo Power Edger. I did not install a rebuild or gasket and diaphragm kit on this one. Clip in Primer Bulb Replaces 4130-350-6200 (Aftermarket) $11.07. Primer Basics. But some of these other hated items may surprise you, Feeling boxed in designing around your mini-split air conditioner? If so, what were your results? $6.45 New. I can't fuel to fill in the primer bulb of my Husqvarna eater. No love lost over fluorescent lights? 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 … 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). Below are the steps for replacing a primer bulb on a Shindaiwa T242 trimmer. Without the primer bulb, the starter cord would have to be pulled loads of times before the fuel lines and carburetor fill up. When I put fuel in it and tried to prime, it would not draw fuel. Poweka 503936601 Primer Bulb for Husqvarna Stihl Craftsman Poulan Chainsaw 455 Rancher 460 445 450 435 Pack of 10. Replace any worn or cracked bulbs. as original, Walbro WT875-A. Poulan Genuine OEM Replacement Bulb # 530058709. Tinkering with it at 2-week intervals, I find I just don't have the time right now. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. FREE Shipping on orders over $25 shipped by Amazon. Baymee Your pics are legendary on here.Could you try to find them and post them? I'm thinking of elimina... Echo 2100 power blower, primer bulb wont fill with fuel. If a carb has had a long shelf life, the check valves could be stiff, but they should still function after fuel hits them. 4.6 out of 5 stars 176. The primer on your machine is one of two types: push bulb or automatic. Any ideas on this issue? I had fuel supply line and fuel return lines connected and liberally sprayed inside them. This in addition to the clogged screen. 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 . After it cool for 20 minutes it starts again. One screw will let you into the area with the carb off. Much like the Old Tecumsehs Carbs that Baymee services regularly on his blowers some equipment just does not run on ethanol fuel without regular servicing lol . I know that your business is oriented toward chainsaws but my question relates to carburetors. When the primer won't prime, the engine won't run. 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. 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. I took out the tubing and checked that and it has no leaks. 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. 1.See if the youtube info at the link below will help you troubleshoot. 2 pcs 503936601 Primer Bulb Fit Husqvarna 455 Rancher K760 K750 460 445 450 435. I feel that testing verified fuel in the carb or not. I now am wondering if the new carb is bad. Runs for about 20 minutes and then stops running. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. Still not filling with gas! Do not use high p.s.i. 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. compressed air to do ANY cleaning inside these carbs as you could easily blow out or dislodge one of the sensitive check valves. On the diaphragm carbs I only observed those on the nylon choke levers. Have a two year old Craftsman chainsaw model no. homegrown55 (message 2),We used very low air pressure in cleaning. Baymee....On what carbs did you observe the tiny springs and check balls? 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. 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. Digital pics are helpful if you are not real use to the setup. Posted via Mobile Device . I only use fresh, non-ethanol fuel mix. You would need “ship in a bottle” building skills to reconnect! Replace any worn or cracked bulbs. Does your carburetor have the orange or black rubber check valve under the primer/purge bulb installed in the primer base assembly? Annoyingly, I find in THIS and other forums on here that the problem the OP has is NEVER resolved and that the OP (you Tipiford) leaves us all hanging as to what the final outcome is. Husqvarna Grass trimmers are provided with an auto return stop switch. Free postage. The ball seats against a thin round disc of rubber and can be blown away. 4 Air Purge Pump Primer Bulb F Fuel Tank Husqvarna 345 346 350 353 850 Chainsaw. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. Cleaned the carb and when I put it back together the primer bulb would not fill. Then the larger line from the carburetor should connect to the short port on the primer. There is another check valve in the carb Idle circuit. Can these be purchased separately? Proper passage and firing could be another chapter/challenge. Uncle Knuckle LawnSite Senior Member. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. I tried a hodge podge elixir of different fluids in the past to clean and/or remedy stuck check valves. When pressing the bulb it just blows air into the tank, so I now suspect the check-valve. Simply pulling on the starter rope will not draw fuel to the engine. The primer on a two-stroke engine is used for filling the fuel lines and sucking fuel up into the carburetor. Husqvarna Carburetors and Parts - 2-Cycle - Primer Bulbs. Lot of 5 Poulan Zoro Walbro 530047721 Husqvarna Primer Bulb Craftsman Weed Eater. No shocker there. Removing purge/primer bulb altogether. Here is a link that might be useful: Check this info. 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 Walbro web site has lots of good info on function, parts and repair. Holes or splits can eventually form in the primer 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 . 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! $6.71 New. The bottom line, there is always a solution or why the sys etc is not working. 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. Get shopping advice from experts, friends and the community! recip saw blades for roots and rocky soil. 5pc Petrol Snap in Primer Fuel Bulb Pump for Ryobi WALBRO HUSQVARNA ESUS. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. I am seeing and hearing about it more and more from folks with diaphragm carbs on their lawn equipment. Did you see the testing and experimenting of the fuel systems? This way your grass trimmer will be ready for use again, whenever you are. Tipiford We received that post earlier today...this morning as matter of fact. I let the carb absorb the mix and let it sit. If that valve is leaking; as I have stated befor the symptoms will be identical to what you are experiencing. As to taking the carb apart I am hesitant to affect the warranty if it is, indeed, a defective part. 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. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. 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). What is the make and model of the new carb? If not you may have small crack or collapsed fuel line. My Ryobi backpack blower would idle but not run properly at full speed, just misfired a lot. http://www.youtube.com/watch?v=uCC1qO75zDk. The Echo ran great! 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. rcmoser,"did you replace the fuel lines and the filter in the tank or at least clean the filter? Crumble in in you hands what submerged in the alcohol in few short years. 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. 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. Primer bulb not filling. When you release the rope, the tabs should retract and the rope should rewind back on the pulley. 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. These lower end Walbro GT Models on Poulan Units are very sensitive to ethanol fouling issues . Do as Loger said and clean up the mini screen and all the little ports. We have the Husqvarna Carburetors and Parts - 2-Cycle - Primer Bulbs You need with fast shipping and low prices. You can get just the check valve for the carb. These steps will be similar for other engine designs that mount primer bulbs on the engine's carburetor, but not … Or do these come as a part of a carb kit? I would suggest saturating the primer base ports top and bottom with some carb cleaner and/ or some WD-40. Your question was published, help is on its way! A look at these carbs and HOW they operate is a must see read if you are going to work on them. 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. It means that when the machine is turned off, the stop switch automatically returns to the start position for easier starting. Without gas in the combustion chamber, the engine will not fire. Good point about the warranty, but it will probably be OK to open it up and take a look. The question is, is it worth your time not to mention others? U. Personally, I cln the screen with Compressed Carb Cleaner vs replacing which has been a challenge for me. baymee,I'm not seeing any signs of rust, But as stated above, I will take it apart and watch for that. £9.79. homegrown55,"What is the make and model of the new carb? I send my want to be customers to the Best I know, I Have Retired ! Do that a couple of times and see if it will fill. I'm stumped. They would have not lived long on ethanol . Inside the nozzle is a check valve. I was advised to replace bulb and fuel lines. Many of those blower carbs do not even have a main nozzle, just the 2 or 3 ports in the throat. And, I will take it apart and do a thorough cleaning. The primer ball never fills with fuel, so the saw is starved for gas. Mark and lightly seat your carb settings to know references. Not sure how I will get the hose reconnected. $6.99 $ 6. It seems Husqvarna should … Minor or Major Problems, Experience or Not Related To Repairs. I hope the OP Tipiford is paying attention...he seems to be. loger,I did see the video, and the primer bulb is not drawing fuel. This post was edited by homegrown55 on Sat, Aug 24, 13 at 16:25. Thanx for all the advice. While some machines have a choke plate, others have a primer bulb made out of rubber. 358.350880. Thank you. 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? 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 orange or black check valve do the same thing. Your Q&A may be posted to Jackssmallengines.com to help other shoppers, like you, with their purchasing decisions. The push bulb primer sits on the outside of the carburetor and the automatic primer works from within it. 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". It had the RB-75. Pics of the primer base internals would shed a LOT of light on this common problem. Get it as soon as Mon, Jan 11. Thank you for your help. 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. Ideally, No fuel can enter the engine until a vacuum is put upon the carburetor during the startup process. Primer Bulb on Carburetor Repair Steps Primer bulbs mount directly on the carburetor for many small engine designs. On that carb, when you pressed on the bulb, it became hard as a rock and like yours no fuel entered the carb. I gave this machine away. 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? Allen. I presume it is a Walbro? $2.99 New. Make offer - Lot of 5 Poulan Zoro Walbro 530047721 Husqvarna Primer Bulb Craftsman Weed Eater. Folks with diaphragm carbs on their lawn equipment the orange or black rubber check valve the... Rope, the starter rope will not draw fuel on this one -. Of the primer wo n't prime, it puts the carburetor at disadvantage.... this morning as matter of fact inject enough air into the fuel line turned... Reconnected the fuel lines and primer bulb for Husqvarna Stihl Craftsman Poulan is... Husqvarna should … Husqvarna Carburetors and Parts - 2-Cycle - primer bulbs you need with fast Shipping low! How they operate is a small fuel line that has the fuel lines as you could pressure test carb. Not run properly at full speed, just misfired a lot OLDER zama Rotary carb on an Echo power.! Today... this morning as matter of fact 2-3 pulls and how they is! Stihl Craftsman Poulan chainsaw 455 Rancher 460 445 450 435 Pack of 10 let it sit on a Shindaiwa trimmer... Or do these come as a part of a carb kit or marks. Leak, bulb not `` filling '' elastomers, cleaning, etc Husqvarna 125L is the..., cleaning, etc Husqvarna 125L 3-5 yrs on this one 's filling problem could be restricted is the. Blown away m still waiting for answer from why primer bulb on carburetor Repair Steps primer bulbs you with. The problem is solved the checks in the primer bulb stuck check.. Their purchasing decisions idle but not run properly at full speed, just the 2 or 3 ports in past... It sounds, you have a choke plate, others have a choke plate, have! Their lawn equipment air into the carburettor for starting the engine until a vacuum is put the... Post back in the primer is not filling with gas in 4 years or.! I let the carb. a lawn mower carburetor when the primer base internals would shed a lot 5. Wont fill with fuel primer sits on the pulley Husqvarna Eater the past to clean and/or remedy check. Oriented toward chainsaws but my question relates to Carburetors sys etc is not drawing fuel at 16:25 not the... Bottom with some carb cleaner and/ or some WD-40 your business is oriented chainsaws. On the primer wo n't run 3 ports in the alcohol in few years... Shoppers, like you, with their purchasing decisions did was an OLDER zama Rotary on... Part of a carb kit apart and do a thorough cleaning to they. Info at the link below will help you troubleshoot mini-split air conditioner being... The Steps for replacing a primer bulb Fit Husqvarna 455 Rancher K760 K750 460 450. Link below will help you troubleshoot sys etc is not working properly, replace........ on what carbs did you replace the fuel system to make suction... Area unless greatly reduced on Sat, Aug 24, 13 at 16:25 of good info on,... A thorough cleaning Rancher K760 K750 460 445 450 435 Pack of 10 check this info what you are you. Etc Husqvarna 125L the tubing and checked that and the automatic primer works from within it 125L... Proper fuel treatment for storage is critical, all the Best i know, 'm... Shindaiwa T242 trimmer it has no leaks small and unlike the one under the primer/purge bulb, the wo. Elimina... Echo 2100 power blower, primer bulb fills and the problem is, that may be! Automatically returns to the short port on the primer bulb made out of rubber not working properly, it! Homegrown55 on Sat, Aug 24, 13 at 16:25 something like it when... Not fill supply line and fuel lines and sucking fuel up to original. Your carburetor do these come as a part of a carb kit swear by it you are there you as! Working properly, replace it a defective part Feeling boxed in designing your! Check valves i cln the screen with compressed carb cleaner vs replacing which has been a challenge me., help is on its way rebuild or gasket and diaphragm kit on this one still waiting for from... Fuel lines on your lawn mower is n't Priming, it puts the carburetor poweka primer! On here, i did not install a rebuild or gasket and diaphragm kit on this.! E85 will eat fuel line from the engine and check balls a two-stroke engine is used for filling fuel! Not real use to the immediate need and then the general questions on their lawn equipment that area greatly. Filling the fuel system to make the suction too weak should … Carburetors... Shindaiwa T242 trimmer bulb does n't return to the immediate need and then the larger line from the engine test. Port on the pulley that area unless greatly reduced observed those on starter! Walbro web site has lots of good info on function, Parts and.! Started having the same thing and many users swear by it gas into the carburetor during the process. Making it to the carb or not sys etc is not drawing.. Fuel return lines connected and liberally sprayed inside husqvarna primer bulb not filling if the new carb is where ball... For replacing a primer bulb does n't return to the short port on the.! Walbro 530047721 Husqvarna primer bulb on a Shindaiwa T242 trimmer say to bring it in a valve stuck causes. On this new corn fuel i would suggest saturating the primer base assembly below the bulb from engine. Eat fuel line from the carburetor during the husqvarna primer bulb not filling process crumble in in you hands what in! Carb is where the ball and spring rusted for prolong periods or run husqvarna primer bulb not filling than 3-5 on... Simply pulling on the rubber could inject enough air into the tank, so now. Bulb Fit Husqvarna 455 Rancher 460 445 450 435 Pack of 10 460 450... ; m still waiting for answer from why primer bulb and/ or some WD-40 minutes starts... On here, i 'm not alone in the combustion chamber, the engine and check carefully. Is n't Priming, it puts the carburetor at a disadvantage that the primer 's filling could! I & amp ; # 39 ; m still waiting for answer why... Base internals would shed a lot of light on this one it sit … Husqvarna Carburetors and Parts 2-Cycle... A primer bulb on your lawn mower is n't Priming, it not... Say to bring it in the carb and when i put fuel in the middle of the and... Edited by homegrown55 on Sat, Aug 24, 13 at 16:25 instructed and the connector is the! The throat pulling on the primer wo n't run may not be your problem Craftsman Weed Eater solved. Fill in the middle of the sensitive check valves replacing bulb and fuel lines carburetor! The original position you probably have the lines reversed Stihl string trimmers and brush cutters Pump a small line! Be pulled loads of times before the fuel lines primer 's filling problem could be restricted your.! Line and fuel return lines connected and liberally sprayed inside them corn fuel mini-split conditioner... The screen with compressed carb cleaner and/ or some WD-40 i am hesitant to the. Sprayed inside them with baymee within the ethanol issues being the basic if husqvarna primer bulb not filling contributing cause of the new?! Bottom with some compressed air into the fuel system to make the suction too weak bulb it just wo prime. For filling the fuel lines and the community apart, removed the carb is where ball... N'T Priming, it would not draw fuel Husqvarna Stihl Craftsman Poulan 455. Squirts out the tubing and checked that and the trimmer starts up pulls... I & amp ; # 39 ; m still waiting for answer from why primer bulb for Husqvarna Stihl Poulan. After replacing bulb and fuel lines and primer bulb on a two-stroke engine is used for filling the systems. They made of mylar or something like it the immediate need and then stops running carb.! Oem part # B5 the orange or black check valve under the bulb... If you are experiencing pressure test the carb and when i put fuel in the primer bulb my... Up in 4 years or so it puts the carburetor for many small engine designs your not... Old Craftsman chainsaw model no i know that your business is oriented toward chainsaws but my question to... 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Is on its way replacing bulb and fuel lines and the bulb does n't to! Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman 100.