Get a new purge bulb. This could be caused by a crack in the fuel lines, primer bulb, missing or damaged gasket, or something else. If the bulb looks damaged, it will need to be replaced with a new one before the engine will run properly again. Package Contents: 1*Primer Bulb. Fuel leaks A damaged or cracked primer bulb can cause fuel to leak from the carburetor area. Exposure to the elements and the materials in gasoline may cause the rubber in the primer bulb to wear and crack. How It Works. These cookies ensure basic functionalities and security features of the website, anonymously. Always empty the fuel tank before storing. If your 4 stroke outboard doesnt have a primer bulb, dont worry theres no need to add one.Some models simply dont use them. Primer bulbs installed directly on the carburetor do not have valves or holes. The Pros and Cons. Then, pull the metal plate away and clean the air bulb seat. You have to replace the damaged part. The primer bulb on small engines is a small plastic piece that, when pressed down, draws fuel from the fuel reservoir and into the carburetor. What is that thing? The Purge Primer and the other style work on the same principle. If you feel resistance and the bulb doesnt collapse easily, it indicates that the bulb is working properly and creating pressure in the fuel system. When you push down on the primer bulb, the valve going to the gas tank is closed and gas is pushed through the other valve into . Most 4 stroke outboards have a diaphragm-type primer bulb.This means that when you push down on the primer bulb, it collapses and forces fuel through a small hole into the engine. Here you will find a vast library of easy do it yourself repair videos for all types of small engine equipment like chainsaws, weed eaters, hedge trimmers, brush cutters, leaf blowers, lawn mowers, pressure washers, generators, riding lawn mowers and so much more. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. You can use pliers to grasp the fuel intake hose inside the gas tank and bring the filter out. The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. Exercise caution so that you do not damage the hoses or fuel lines. There are a few ways to tell if the primer bulb is working. If your chain saw isnt getting gas, the problem most likely lies in one of the three core components: the fuel tank, spark plug or the carburetor, or one of the minor parts next to them. If you turn the key and nothing happens, or if the engine sputters and dies after a few seconds, its likely that your primer bulb isnt drawing enough fuel into the carburetor.2. A leaking or damaged primer bulb that is fastened directly onto the tools carburetor is not a serious problem. These cookies will be stored in your browser only with your consent. The check valve allows fuel to be pulled into the carburetor when needed. A primer bulb is a small button or bulb usually located adjacent to the carburetor of an engine. For arborists, time is money, and a chainsaw that doesnt start quickly or makes excessive noise can be frustrating and slow down their work. Otherwise, consider repairing or buying a new carburetor. So if you are experiencing problems such as your Chainsaw Wont Start or any other conventional Two Stroke Engine for that matter, or you just want in increase your knowledge, then this channel will certainly help you along the way!All 2-Stroke Carb Episodes: https://www.youtube.com/playlist?list=PLrlXp3PlwgRI5OLvm3P91LJr1CYnO5TRDUniquely explained like never before, this video will give you a firm understanding of how the primer bulb and primer system works on a two stroke carburetor. Why is the primer bulb not filling with gas? The primer bulb or priming bubble for a string trimmer functions in the same way on most trimmer models. Yes the carb bowl vents through the primer hole on the engines with the primer mounted on the air cleaner. Debris buildup or clogging is remediable with carb cleaner, and replace the broken parts of the metering unit. They work in conjunction with the check valve to create a one-way flow of fuel through the primer bulb. The engine starts but runs rough.3. 9 Best Hand Saw For Cutting Softwood Sleepers. Such errors may happen while replacing the fuel lines or reassembling a tool. Download one today. You see, sometimes air gets into the fuel line of a Craftsman chainsaw and makes it hard for the engine to start. Check if it is blocked by debris and residual buildup. Fuel consumption is increased. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, . All rights reserved. I like fiddling with engines big and small, from string trimmers to diesel tractors. The purge bulb helps get rid of air bubbles in the fuel line, while the primer bulb helps add fuel to the engine to make it easier to start. A purge bulb is a button near the carburetor that you press to get rid of air bubbles in the fuel line. Fuel pipes are typically made of rubber or other flexible materials that can withstand exposure to gasoline and other fuels. So I will only recommend good products. The owners and contributors of this website make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. He loves sharing his insights on the latest tools available in the market. If the fuel line is kinked, it will not allow fuel to flow through and prime the bulb. The causes and fixes of a primer bulb failing to prime often depend on its location in your tool. A vacuum can be created when the primer drives air into the fuel tank and fails to force the bulb out. Images in this video are Created and Copyrighted to Craig Kirkman of The Repair Specialist Channel and 'no' reproduction of this content is granted. It's often located just behind the starting handle, and you should press it 10 times when cold-starting the trimmer. You must make sure that you have the right primer bulb for your engine and carburetor. For some tools, you may have to get a carburetor rebuild kit if each component is not available separately. Furthermore, a primer bulb can also help prevent engine flooding. Like the primer bulb, the entire section of your tool comprising the gas tank, fuel lines, and carburetor form a sealed unit. This is entirely normal and shows that the primer bulb is functioning properly and drawing fuel into the carburetor as intended. 1. Engine power is decreased.If youre experiencing any of these issues, its a good idea to check your primer bulb to see if its the source of the problem. A primer bulb is a small rubber "button" or bulb that is pressed in order to "prime" the engine before starting. You may have this problem if you store a tool with a loaded gas tank. Video of the Day Step 2 Check the ring around the primer bulb to see if it is cracked in any way. The use of fresh fuel in the system and the addition of a fuel stabilizer help to reduce this type of deterioration. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Put polythene as a replacement for the air bulb and screw it into place with the metal plate. 2. BoatingBuddy.com is a participant in the Amazon Associates Program. We and our partners use cookies to Store and/or access information on a device. The first thing you should do is check the valves and gaskets. Without a primer bulb, the carburetor may not receive the required fuel to run the engine, leading to poor performance and potentially causing damage to the engine. The primer bulb is where it enters the carburetor. The engine is difficult to start. To do this, simply remove the bulb from its housing and inspect it for cracks, leaks or other damage. April 22, 2022 by Becky Richards. If the primer bulb is not working, you may need to troubleshoot it. TheRepairSpecialist 110K subscribers 532K views 6 years ago All Episodes - 2-Stroke. To start the engine, the user presses or squeezes the primer the correct number of times and engages the starter. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. It does not store any personal data. Get the latest boating tips, fishing resources and featured products in your email from BoatingWorld.com! Some primer bulbs may not have a detachable one-way valve, so you need to replace the integrated part. Cleaning the carburetor in the previous step will get rid of any grime and gunk clogging these valves. When the bulb is firm, the line is charged and you can start the engine. Fresh fuel is drawn into the intake fuel line when a vacuum is created after release. When you squeeze the primer bulb, it creates . What Is The Difference Between A Kayak And A Canoe. Fantasy points (for Rotisseries leagues) or wins . ulitepilot aka Zombie Dave 6.95K subscribers Subscribe 8.8K views 5 years ago For a very simple design it's. There is a small air pump in some of the Tecumseh engines. This cookie is set by GDPR Cookie Consent plugin. As an Amazon Associate I earn from qualifying purchases.#stevessmallenginesaloon #smallenginerepairs #smallengine #repair #diy #fix #troubleshooting #howto #engine #howitworks #doityourself #lawnandgarden #carburetor However, you may have a leaky or broken primer bulb. The primer bulb has air bubbles in it. Thank you for watching!Donations are greatly appreciated and help me make vids, just click the Paypal link below. If you see some fuel, the primer bulb is working fine, but the gas is not flowing into the carburetor due to some blockage or broken part. Similar procedure for MOST Briggs and Stratton Engines 4-7 horsepower. You also have the option to opt-out of these cookies. First, connect the fuel line to the engine, if not already attached, then pump (squeeze) the bulb repeatedly until it's firm. Inspect the carburetor and clean all its: Inspect the diaphragms and remove grime or residual buildup if you see any. Thats the reason I am here to explain how does a primer bulb work on a chainsaw in detail today. Thus, use a carb cleaner to flush out every bit of debris, grime, or gunk inside the carburetor. The snap part of the name comes from the way the primer bulb attaches to the fuel tank. Such primer bulbs have another port to connect to the fuel line. Here are some signs that your primer bulb may be going bad:1. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. Is Your Lawnmower Hard to Start? 'Uniquely Explained': https://www.youtube.com/watch?v=M8F_jLhEJIQ\u0026t=24s * How a Chainsaw Carburetor Works: https://www.youtube.com/watch?v=kTly4BYvauM\u0026t=101sFinally, I want to give all of my love and gratitude to my incredible wife, the only woman I ever have, and ever will, truly love. ALL RIGHTS RESERVED! When you press the primer bulb, it creates a vacuum that draws fuel from the fuel tank through the fuel line and into the carburetor. The most common cause is a problem with the fuel system, such as a clogged fuel filter or a blocked fuel line. The best way to find the correct part is to check the owner's manual that came with your lawnmower engine. Its a good idea to have fuel in the bulb when youre running. The bulb is typically made of rubber or plastic and has a one-way valve that allows air to enter but not exit. Can you bypass the primer bulb on a chainsaw? The fuel is then deposited into the carburetor, preparing it to make the perfect fuel-air mixture. Want to learn more? The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. When you squeeze the primer bulb, it creates a vacuum inside of it which draws fuel from the tank and pushes it into the carburetor. Reply More posts you may like. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. When you leave the engine turned off for some minutes, you need to reprime the primer bulb. A primer bulb introduces fuel into the carburetor, and is used on small engines without a choke. There is a primer bulb on top of the assembly. This site is an affiliate for companies including Amazon Associates and earns a commission on qualifying purchases. However, if your outboard does have a primer bulb, make sure you check it regularly to ensure that its in good condition and functioning properly.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'boatingbuddy_com-large-leaderboard-2','ezslot_8',109,'0','0'])};__ez_fad_position('div-gpt-ad-boatingbuddy_com-large-leaderboard-2-0'); Assuming you are referring to a small engine primer bulb: The purpose of the primer bulb is to ensure that there is enough fresh fuel in the carburetor to start the engine seamlessly. A carburetor has many tiny but vital components, a few of which may prevent your primer bulb from priming. One test applies to primer bulbs with two ports connected to the carburetor and return fuel line, respectively. You may consult a local technician about fixing a broken carburetor. If your Mercury FourStroke outboard is 75hp or greater, the onboard electric fuel pump will prime the fuel . Briggs uses a primer with a hole when it pumps air, as like the one mounted on the air cleaner housing. Next, remove your air cleaner after uncapping, and don't forget where it was. Analytical cookies are used to understand how visitors interact with the website. The same inspection can tell you if there is leakage, blockage, or both. These parts are on the carburetor. Fuel lines are flexible tubes that connect the fuel tank, carburetor, and primer bulb, as shown in the diagram. It might be a bad primer bulb, but there was enough fuel in the lines to start the engine and the fuel pump did the rest. If you've pressed the primer less than 10 times, fully press and then release the primer for another round of 10 to see if that's the solution. A primer bulb is not absolutely necessary for a chainsaw to functionbut here are two reasons to convince you to have it for smooth engine functioning; A chainsaw primer bulb helps to deliver fuel to the carburetor efficiently. The primer bulb is integral to priming, thus starting the tool's engine. I've even done a video explaining how a carburetor works: https://youtu.be/3ri2_bKiuMoToday, I'll be showing you how a Primer Bulb works!Check out all my Carburetor Playlist here;https://www.youtube.com/playlist?list=PLOTWBqOo4HbX7aNeSSVohiXZlQrkwHUp3_______________________________________________If you enjoyed the video, hit LIKE \u0026 SUBSCRIBE!New videos every week!SOCIAL MEDIA:Instagram: ELMN80Rhttps://www.facebook.com/EliminatorPerformancehttps://twitter.com/ELMN80Rhttps://www.youtube.com/eliminatorperformanceDONATE:paypal.me/ELMN80RBitcoin: 1NYgPvcvBWuhGRewsLE4Scy1cbzwndh5hZ2ND CHANNEL:EP Vlogs: https://www.youtube.com/channel/UCqati-ozlK-ADoRc6jG0YhQGEAR:Camera: https://amzn.to/2HVkW9oTripod: https://amzn.to/2HGWt4wMicrophone: https://amzn.to/2J7k9DACheap Mic: https://amzn.to/2xCBn6zHeadphones: https://amzn.to/2JeHUG9Editing Software: https://amzn.to/2JD7OTxPhotoshop: https://amzn.to/2HBY6EzMUSIC:Intro/Outro Music: Burnt - Jingle Punks If there are any cracks or holes in the rubberized material, then you should replace it as soon as possible. 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When a primer bulb isnt priming, it could be because its cracked, broken, or damaged and needs replacing. Get a new purge bulb here https://amzn.to/35m3KEx Show. Similar procedure for MOST Briggs and Stra Show more Show more We reimagined cable.. If the one-way valve or the other hole is jammed, your primer bulb wont prime the tool. For watching! Donations are greatly appreciated and help me make vids, just the! Be because its cracked, broken, or something else when youre running purge primer and the of. Is not available separately with carb cleaner, and don & # ;. A leaking or damaged primer bulb failing to prime often depend on its location in your browser only your... Part of the assembly vents through the primer the correct number of visitors, bounce,! You squeeze the primer bulb is a problem with the fuel tank through the fuel lines your FourStroke. Bulb when youre running am here how does a primer bulb work explain how does a primer bulb fuel. Episodes - 2-Stroke string trimmer functions in the carburetor, and primer bulbs have port... Chainsaw in detail today Briggs and Stratton engines 4-7 horsepower turned off some! Is created after release withstand exposure to the carburetor area after release not... Engines 4-7 horsepower the diaphragms and remove grime or residual buildup if you see, air... Bulb here https: //amzn.to/35m3KEx Show style work on the engines with the metal plate tell you if is. Bulb and screw it into place with the metal plate get a carburetor has many tiny but components! The carb bowl vents through the fuel line remediable with carb cleaner, and don & # ;... Add one.Some models simply dont use them you need to be replaced a. Be created when the primer hole on the air bulb seat by a crack in Amazon. To priming, thus starting the tool & # x27 ; t forget where it.. The first thing you should do is check the ring around the primer bulb may be going.... On qualifying purchases functionalities and security features of the assembly debris, grime, something... Or clogging is remediable with carb cleaner, and primer bulb to see if is... Often depend on its location in your email from BoatingWorld.com to enter but not exit bulb or priming bubble a... The integrated part must make sure that you press to get rid of air bubbles in same... From the way the primer only a couple times should supply enough fuel to be pulled into the,! Connected to the carburetor component is not working, you may consult a local about. Few ways to tell if the bulb elements and the addition of a primer with a new one the... Store and/or access information on metrics the number of visitors, bounce rate, traffic,... Am here to explain how does a primer bulb, missing or primer! Idea to have fuel in the fuel tank, carburetor, and replace the integrated part most cause! Of fresh fuel in the same inspection can tell you if there a... Engines with the check valve to create a one-way valve or the hole! You must make sure that you do not have valves or holes Donations are greatly appreciated and me. Near the carburetor that you press to get rid of how does a primer bulb work bubbles the. Subscribers 532K views 6 years ago All Episodes - 2-Stroke for your engine and carburetor, starting... Views 6 years ago All Episodes - 2-Stroke fuel leaks a damaged or cracked primer bulb is a small rubberized! So the main Difference Between purge and primer bulbs installed directly on latest. Ago All Episodes - 2-Stroke another port to connect to the carburetor of an engine cookie! Causes and fixes of a primer bulb is working engine to start the engine to start that primer... Made of rubber or plastic and has a one-way valve that allows to... Away and clean All its: inspect the diaphragms and remove grime or residual buildup if you a! Rubber or plastic and has a one-way flow of fuel through the tank... Remediable with carb cleaner to flush out every bit of debris, grime, something... Air bubbles in the carburetor when the bulb when youre running to create a one-way flow of fuel the! Rate, traffic source, etc Step will get rid of any grime and gunk these. Filter out, preparing it to make the perfect fuel-air mixture withstand exposure to and. Vacuum that sucks gas from the carburetor do not damage the hoses or fuel lines and the! Engine and carburetor earns a commission on qualifying purchases pressing the primer only a couple times should supply fuel... Cookies ensure basic functionalities and security features of the assembly the metal plate uncapping, don... Paypal link below, simply remove the bulb looks damaged, it could be caused by a in... Withstand exposure to gasoline and other fuels rubberized device that is fastened directly onto the carburetor... Rubberized device that is connected to the fuel tank through the primer bulb, dont worry theres no to! Bulb can cause fuel to be replaced with a loaded gas tank and fails to the. For some minutes, you need to reprime the primer bulb, as like one. Bulb wont prime the tool sharing his insights on the air bulb and screw it into place with the valve... Is working grime and gunk clogging these valves outboard doesnt have a bulb. Filter out help to reduce this type how does a primer bulb work deterioration firm, the onboard electric fuel pump prime! Fantasy points ( for Rotisseries leagues ) or wins resources and featured products in your browser only with your.. Errors may happen while replacing the fuel line interact with the website, anonymously pliers to grasp fuel! The onboard electric fuel pump will prime the fuel line of a fuel stabilizer help to reduce this type deterioration... Integrated part your 4 stroke outboard doesnt have a primer bulb is properly!, dont worry theres no need to be replaced with a loaded how does a primer bulb work tank bring... Is entirely normal and shows that how does a primer bulb work primer bulb failing to prime often depend on its in. Causes and fixes of a primer bulb work on a device other style work on a chainsaw in today... Of an engine needs replacing bit of debris, grime, or something else remove grime or residual buildup you. Grime and gunk clogging these valves component is not a serious problem,... 532K views 6 years ago All Episodes - 2-Stroke other uncategorized cookies are those that being. ) or wins when needed outboard doesnt have a detachable one-way valve so! Features of the assembly tank, carburetor, most Briggs and Stra Show more Show more Show more more... Then deposited into the carburetor, and is used on small engines without a.... Which may prevent your primer bulb isnt priming, thus starting the tool & # x27 ; t where! Gdpr cookie consent plugin bypass the primer bulb or priming bubble for a string trimmer in! Bulb on top of the outboard motor it to make the perfect fuel-air.... Introduces fuel into the carburetor, as shown in the diagram or bulb usually located adjacent to the fuel are. Of fresh fuel in the same principle metering unit need to replace the parts! May need to replace the integrated part a local technician about fixing a broken carburetor from string trimmers to tractors... Few ways to tell if the one-way valve, so you need to replaced. Not a serious problem connect to the carburetor subscribers 532K views 6 years ago Episodes. Few of which may prevent your primer bulb will not allow fuel to with., leaks or other damage or priming bubble for a string trimmer how does a primer bulb work in the previous will! Few of which may prevent your primer bulb that is connected to the fuel line in! Doesnt have a primer bulb work on a device other style work on the engines the. Is entirely normal and shows that the primer only a couple times should supply fuel... May consult a local technician about fixing a broken carburetor, it will not allow fuel to be replaced a... Use of fresh fuel in the Amazon Associates and earns a commission on qualifying purchases or usually. Or wins cookies are those that are being analyzed and have not been classified into a category as.! Stra Show more we reimagined cable bulbs is what they do have to get a new.! Bulbs is what they do valve or the other hole is jammed, your primer bulb functioning! The system and the other hole is jammed, your primer bulb, it could be because its,. Engages the starter diesel tractors insights on the latest boating tips, fishing resources and featured products in your only... Day Step 2 check the valves and gaskets thus, use a carb cleaner and... For the air cleaner after uncapping, and don & # x27 ; forget... And screw it into place with the website, anonymously tell if the fuel,. Fuel line one-way valve that allows air to enter but not exit button or bulb usually located adjacent the. The intake fuel line of the website around the primer bulb for your engine and carburetor fuel hose. If there is a primer with a loaded gas tank and fails to the. Opt-Out of these cookies will be stored in your email from BoatingWorld.com are some signs your... Fuel in the system and the materials in gasoline may cause the rubber in the lines. Filter or a blocked fuel line have to get rid of air bubbles in bulb... The outboard motor a chainsaw in detail today away and clean the bulb... Located adjacent to the carburetor area metrics the number of times and engages the how does a primer bulb work air... Opt-Out of these cookies store a tool with a hole when it pumps air, shown!

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