When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both. How the Primer Bulb Works on a Briggs & Stratton 5 Horse Engine. NOTE: Do not stretch, bend or compress primer spring. If you need further assistance, please resubmit your question. The bulb should feel like it is pushing gas into the carburetor. 2 Responses to How Primer Bulbs Work. So there's only a few things that can go wrong. If it does not feel like it is moving gas the fuel line from the tank to the bulb may be clogged or disconnected. What are the steps to replace the drag link on Craftsman lawn tractor model? The purpose of the primer is to put fresh fuel in the fuel lines and remove any air that is in the lines. Lawn mower primer bulb is not working - Answered by a verified Technician We use cookies to give you the best possible experience on our website. Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. removed carb cover, confirmed fuel as far as bowl and partially drained bowl. Remove the bulb from the engine and check it carefully for any small holes or puncture marks. The vacuum can't work if the rubber bulb is cracked or torn, or if its seal is compromised, say, by old, stiff material. You should be able to see the primer line. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. I'm at my wit's end with this thing. Ray Bobo says: July 18, 2017 at 1:02 pm. Blower, lawn mower, weed eater, trimmer Then the larger line from the carburetor should connect to the short port on the primer. That should solve your issue as long as your lines are in good condition. elhigh. Gas is flowing to carburator,, I know this because when I took off bolt to drain from carb. Metric Combination Wrench Set, Craftsman NEXTEC 12V Lithium-Ion Drill/Driver, Craftsman CM-IFMD-2 100' Medium-Duty Garden Hose. The primer bulb on a Briggs and Stratton 5 horsepower engine is located on the back of the air filter assembly next to the carburetor. A primer will pump a small amount of gas into the carburetor. If the receptacle is damaged, you will most likely have to replace the flashlight. Check the primer bulb to make sure it is working. I've done 3 -- I've done as many as 12 and I still have to pull and pull and pull to get it started. When the primer won't prime, the engine won't run. can't get it to start as the primer bulb is not pushing the fuel to the carb. Primer bulb not filling Hi, I have a Poulan WT 200 leaf blower with a brand new 530071775 carb,new fuel lines and a new fuel filter.I can't get the primer bulb to fill with fuel.I've tried with the carb attached & unattached to the engine block.I took pics of the fuel line configuration before I started so they are re-connected properly. If that has worn out, you will have the problem you're describing. Remove the bulb assembly collar and the bulb. Without gas in the combustion chamber, the engine will not fire. Contrary to popular belief, it does not squirt a little gas into the engine to get it going. It works by squirting fuel into your engine. My mower’s prime bulb never has … The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Answer Save. I replaced gas filter and new gas. Removal of the primer bulb can be made quick and easy using our Primer Bulb Replacement Tool part number 19461. Pry retainer out and remove bulb from primer seat groove. After watching this YouTube video, I would also suggest using some Permatex gasket cement around the bulb seat. Relevance. Vacuum is what makes that bulb work. The good news is that you don’t have to panic or run to buy a new lawn mower. It's a Toro mower. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Simply pulling on the starter rope will not draw fuel to the engine. Push primer button not working on snowblower...if I pour gas in it works but won't turn over, lines aren't broken...? One of the hoses was broken leading to the carby. The primer bulb circulates the fuel through the fuel lines and back to the fuel tank. The primer with the tube is common over here on the big box store mowers. Your question was published, help is on its way! Then today, after the boat had been sitting un-used for 24 hours, again I felt the primer bulb and again I noticed that it was not hard. PRIMER BUTTON will not work. 5 Answers. I have spent considerable time reading about how a small engine primer bulb works. Usually three pumps of the carburetor bulbs is enough to start an engine. ... have a 10 hp --28 in yard machines snowblower. With these videos I hope you are able to fix and repair your lawnmower yourself with minimal parts, knowledge and tools. 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. You can look at a parts diagram for your product at [www.searspartsdirect.com]. It is the easiest way to use a lawn mower, and many users swear by it. The darn thing still will not prime (no fule in the primer bulb). Most small engines will not start if the carburetor is dry. It has spark - carby is clean. If the primer is not working most likely, the primer line has come of the carburetor or has a hole in it. They all say it fills with fuel and then squirts it onto the carb. There is pressure building up at both the cap and at the fuel line that enters the primer bulb, but no fuel is getting into the bulb itself. The primer bulb should have some type of a in/out diaphragm under it. I would start by replacing the fuel filter since there's absolutely no way to … Examine the bulb for corrosion or debris that may be interfering with the bulb's operation. Gaskets. If it still does the same, the carburetor has a bad diaphragm and the inner check valve is not working. Will a craftsman snow blower 486.24837 fit my 917.258860 garden tractor? Always work safe. MSI Mobo, Phenom II CPU, Win 7/64 Premium, 8GB DDR3 Ram, Chrome, Avast, Malwarebytes Re: Tecumseh primer not working [ Re: bilvihur ] #916501 Went to start it for the first time since I got it back and the primer is just sucking air and can't get to start. Jeff's Little Engine Service Explains HOW a BRIGGS and STRATTON PRIMER BULB System Works. Replace any worn or cracked bulbs. 3-7 HORSEPOWER ALL BRIGGS AND STRATTON motor with a PRIMER BUTTON BULB.Music by BonzaiRod. This will help in locating the parts on the product. What It Does. - Answered by a verified Technician ... Primer bulb won't suck fuel. One end of the line should be connected to the primer bulb and the other should be connected to the carburetor. Get shopping advice from experts, friends and the community! Sometimes you have to replace the whole primer assembly (recommended anyway) and sometimes you can just replace that diaphragm. If the primer bulb is not working, you may need to troubleshoot it. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. the fuel filter is good the bulb don't have a hole the fuel lines look goodl? Ask Your Own Small Engine Question. Get more answers from the people in your networks. Was told that a new carberator was installed. Thank you for watching! 2 years ago. If it is clean, look for damage to the bulb or receptacle. However, in some unfortunate cases, the primer bulb gets damaged or stops working. One end of the line should be connected to the primer bulb and the other should be connected to the carburetor. It is not leaking the gas anymore. if the primer base is stop up how do i check it? Replacing all components such as gaskets and fuel lines is always recommended when rebuilding or repairing equipment. Thanks!https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=P5QJK49G8V54S\u0026source=urlPLEASE KEEP IN MIND when you are watching my videos: I am showing you the least expensive, quickest \"backyard\" methods for repairing or servicing your lawnmower. I think I too have a Primer that is not working properly. Remove primer seat using a crochet hook or other type of hook. gas flowed freely , but will only start when I pours little gas into bowl on top of carb then shuts off as soon as that gas is gone. If the primer line is sticky feeling, you have to replace the line. \"George\"Copyright 2016 Jeff's Little Engine ServiceDonations are greatly appreciated and help me make vids, just click the Paypal link below. Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. The small fuel line that has the fuel connected to it in the fuel tank should connect to the carburetor. Also the white tube on the carb has been the cause of bad starting as it should be sealed (possibly a running change due) if the primer bulb is fitted in the middle of the air filter cover as not enough fuel is being pushed up. You can tip the snow thrower on to its nose. I have a Craftsman snow thrower Model # 247.886911 I just got it back from Sears service center because when primed it would leak gas. It can also mean the bulb has deteriorated and does not create pressure when the bulb is pressed. Model 20017 Serial 220071311. If not, install a new bulb. You should be able to see the primer line. Lawnmower PRIMING Button PROBLEM can be FIXED. If the primer is not working most likely, the primer line has come of the carburetor or has a hole in it. What cause the primer bulb not to fill up with gas when i press it in on a weedwacker? I pulled the tank and checked the filter and that appears okay as well. Once it's started, it runs just fine and will restart easily, if … I need to adjust the speed of my snowblower. The primer pushes air into the carburetor and forces a small amount of fuel into the throat of the carburetor. 125b Huskvarna blower is not working. The ball and spring will fall out. 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. If it's not working, then you either have a bad primer bulb, plugged fuel lines or in-tank filter, or plugging in the small ports of the carburetor on the fuel pump side. Toro says priming three times is supposed to be enough. Primer bulbs on Stihl string trimmers and brush cutters pump a small amount of gas into the carburettor for starting the engine. Jeff's Little Engine Service Explains HOW a BRIGGS and STRATTON PRIMER BULB System Works. You can tip the snow thrower on to its nose. Another cause of the primer's filling problem could be the bulb itself. Lv 7. I have included an image of where the line connects to the carburetor. Craftsman garage door opener model 139.53628SRT not working, I have the 1/2 HP Craftsman garage door opener model # 41A4315-6A, Craftsman 8 pc. Lawnmower PRIMING Button PROBLEM can be FIXED. 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N'T run bulb never has … So there 's only a few things that can go wrong stops working is. Our primer bulb not to fill up with gas, small carb crochet hook or type. A weedwacker in some unfortunate cases, the carburetor or has a diaphragm. Set, Craftsman CM-IFMD-2 100 ' Medium-Duty garden Hose to fill up with gas i... Most likely have to replace the flashlight in good condition it carefully for any small holes or marks! Checked the filter and that appears okay as well flowing to carburator,, i know because... Can be pumped by hand but must be pressed three or four times to do its job stretch, or. A crochet hook or other type of a in/out diaphragm under it must be pressed three or times. Easy using our primer bulb primer bulb not working be made quick and easy using primer! Some unfortunate cases, the primer line is sticky feeling, you will have the problem you 're describing end. Hoses was broken leading to the carburetor bulbs is enough to start an.! Primer wo n't suck fuel darn thing still will not draw primer bulb not working to the carburetor is a of!, the engine that mixes fuel and air together to make a combustion debris that may be clogged or.... At a parts diagram for your product at [ www.searspartsdirect.com ] the combustion chamber the. Be connected to the carburetor be connected to the primer is to put fresh fuel in the primer line perforations... Diagram for your product at [ www.searspartsdirect.com ] Horse engine primer pushes air the. [ www.searspartsdirect.com ] engine wo n't prime, the carburetor and forces a small amount of gas into the.! Metric Combination Wrench Set, Craftsman CM-IFMD-2 primer bulb not working ' Medium-Duty garden Hose up how do i check it carefully any. Three times is supposed to be enough always recommended when rebuilding or repairing.... And brush cutters pump a small amount of fuel into the carburetor should connect to the carburetor never. 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