Empty the gas tank, and be prepared for some spills if there is fuel in the carburetor and hoses. How It Works. Squirt the eyedropper full of gas into the fuel bowl vent and repeat the procedure at least 10 times. Furthermore, a primer bulb can also help prevent engine flooding. This valved port is connected to the return fuel line. 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. You have to replace the damaged part. The fuel is then deposited into the carburetor to produce the ideal fuel-air mixture. A primer bulb is a small rubber bulb near the carburetor that can be pressed to prime the engine before starting it. This is entirely normal and shows that the primer bulb is functioning properly and drawing fuel into the carburetor as intended. 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 boat primer bulb is a small hand-operated pump that is used to draw fuel from the tank and into the carburetor. If you dont see any fuel, or if only a small amount comes out, then your primer bulb may not be working correctly. In order for your primer bulb to work properly, you need to make sure that it is in good condition. This valve is an important component of the fuel system and helps to regulate the flow of fuel to the engine. These parts are on the carburetor. When a primer bulb isnt priming, it could be because its cracked, broken, or damaged and needs replacing. You see, sometimes air gets into the fuel line of a Craftsman chainsaw and makes it hard for the engine to start. However, you may have a leaky or broken primer bulb. This helps to prime the engine, which means that it will start more quickly and run more efficiently. Clogged Primer Bulb and Line The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. The primer bulb or priming bubble for a string trimmer functions in the same way on most trimmer models. For instance, a small string trimmer and large lawnmower or snow blower dont have identical carburetors. Gently push in the tabs behind the primer bulb pry the ring loose that's holding it in place. The purpose of the primer bulb is to ensure that there is enough fresh fuel in the carburetor to start the engine seamlessly. How does it work? Your existing light switch, when kept switched on, will continue to supply power to your smart bulb. Press and release the primer bulb a few times. I like fiddling with engines big and small, from string trimmers to diesel tractors. If your outboard primer bulb is bad, youll likely notice one or more of the following symptoms: There are a few simple things you can do to fix it yourself.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'boatingbuddy_com-banner-1','ezslot_4',108,'0','0'])};__ez_fad_position('div-gpt-ad-boatingbuddy_com-banner-1-0'); If your outboard motor wont start, one of the first things you should check is the primer bulb. Unfortunately, not all primer bulbs are created equal. This fuel line returns the gas to the tank. The short post on the back of the primer bulb is where the fuel intake line goes. If you notice that your boats primer bulb isnt working properly, there are a few potential causes and symptoms to look out for. ALL RIGHTS RESERVED! The primer bulb also helps to reduce air bubbles in the fuel line, which can cause problems with starting or running your outboard motor. The primer bulb helps to add the right amount of fuel, reducing the risk of flooding. Replace the assembly according to the owner's manual if any of these issues are present. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. The remedy is similar if you have a broken gasket, seal, ring, or primer bulb plate on the tools carburetor. The bulb-like button is used on many handheld tools and other equipment to regulate the air pressure and suction inside the carburetor, fuel lines, and gas tank. Make sure it is properly connected and sealed and that there are no leaks. For more videos like this, check out:Purge Bulb Upgrades https://youtu.be/2bmdKyRFnjUSpiral diaphragm carb upgrade kits https://youtu.be/y4VEfkIU3ZMHow to Adjust or Tune the Carburetor on a Leaf Blower https://youtu.be/DWPUYJiF6KMCORRECT WAY To Tune The Carburetor On A Chainsaw https://youtu.be/M6T5JoGXcHYHow To Adjust Or Tune The Carburetor On A Weedeater https://youtu.be/gmhxTvGRtCg---------------------------------------------------------------------------------------------------------------------------------------------------------------WELCOME to the Steves Small Engine Saloon YouTube channel! Many small engines use a primer bulb to make starting easier. The Pros and Cons. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. You wont be able to start your engine if that is the case, because the system needs to be primed. A primer bulb is a small rubber "button" or bulb that is pressed in order to "prime" the engine before starting. A bad primer bulb can make it difficult to start your boat engine, and can also lead to fuel leakage. How Does Primer Bulb Work . Hunker may earn compensation through affiliate links in this story. Steves Small Engine Saloon Inc. assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Precautions and Safety Measures, How to Cut Wood Slabs with a Chainsaw in Simple and Easy Ways, Can You Rent a Chainsaw at Lowes? So, there are three easy ways to know if your chainsaws primer bulb is working; By the way, you can also check if the primer bulb is working properly by removing the fuel line from the carburetor and pressing the primer bulb. However, you may visit "Cookie Settings" to provide a controlled consent. Check the fuel hoses and replace them if they are leaking, damaged, or worn out. We and our partners use cookies to Store and/or access information on a device. The consent submitted will only be used for data processing originating from this website. Is Primer Bulbs the same as Weed Eater? 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. The primer bulb goes after the filter for a reason. By raising both simultaneously, you can often get the fuel to start flowing through the injection pump again. This is not only a fire hazard, but can also lead to expensive repairs if left unchecked.3. Patrick McMann works as a hardcore tester and reviewer for Chainsaw Guru. One test applies to primer bulbs with two ports connected to the carburetor and return fuel line, respectively. A cracked carburetor bulb will not be able to create a vacuum and will prevent it from sucking fuel into the carburetor. The primer bulb is hard to press down. This is because the carburetor isnt getting enough fuel to keep the engine running smoothly.3. Also, many primer bulbs are not durable because of the flexible material quality. 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. Note: Like the valves and hoses, the fuel filter in your tools gas tank may have gunk buildup. For arborists, time is money, and a chainsaw that doesnt start quickly or makes excessive noise can be frustrating and slow down their work. Detach the fuel lines from the gas tank, carburetor, and primer bulb. This guide explains more than seven likely causes and fixes for a primer bulb not priming your tool. 5. Very Unique Video: https://www.youtube.com/watch?v=XPgaF-JBwco* How an Ultrasonic Cleaner actually cleans your Carburetor. This air and fuel mixture is pumped into the system when you press the bulb. 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. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. By creating an account you agree to the Hunker, The Chainsaw Primer Button Is Not Filling, 4 Common Reasons Why Your String Trimmer Won't Prime, How to Know If a Fuel Pump Is Bad on a John Deere. It is possible for the engine to start with a remote source of fuel. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Otherwise, consider repairing or buying a new carburetor. Why does a primer bulb have a hole in it? The leakage may be in the fuel lines, connecting ports, or elsewhere. On many small engines, this involves pulling the starter rope, although some small engines have an electric starter. Then, pull the metal plate away and clean the air bulb seat. In some cases, epoxy glue may fix a broken ring. You have to take apart the wing section of the tool housing the air cover and filter, carburetor, fuel lines, and primer bulb. As an Amazon Associate I earn from qualifying purchases.#stevessmallenginesaloon #smallenginerepairs #smallengine #repair #diy #fix #troubleshooting #howto #engine #howitworks #doityourself #lawnandgarden #carburetor A cracked carburetor bulb will not be able to create a vacuum and will prevent it from sucking fuel into the carburetor. * How Fuel Flows though a Two Stroke Cycle Carburetor: https://www.youtube.com/watch?v=NNYEsmtB_X8* How the Two Stroke Carburetor Main Jet works: https://www.youtube.com/watch?v=8exEvSTZjSk* How to Correct Chainsaw running problems by adjusting the Fuel Mixture Screws: https://www.youtube.com/watch?v=Eo6iUTjcQ8Q\u0026t=34s* How Gasoline Petrol Fuel Flows through a Two Stroke Cycle Carburetor: https://www.youtube.com/watch?v=NNYEsmtB_X8* What are Carburetor Emulsion Tubes? 2023 "Chainsaw Guru". If your primer bulb isnt working properly, it can cause all sorts of problems with your engine, including not starting at all. Accordingly, choose a relevant solution. Therefore, you must replace a primer bulb thats: You can instantly spot visible cracks or other evident signs of damage. So, if youll step into the market, youll find two types of primer bulbs being used in chainsaws. 1. April 22, 2022 by Becky Richards. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. It happens when an engine sits unused for long with almost evaporated fuel in the carburetor. Location: Typically located adjacent to the carburetor Material: Generally made of rubber or other flexible material How it works: Primer bulb is pressed and released The cookie is used to store the user consent for the cookies in the category "Analytics". Then, inspect the valves, gaskets, diaphragms, and ports to ensure they are alright. When a primer bulb is bad, the engine begins to lack fuel and dies. After being struck with enough force generated by the firing pin, the primer reacts to produce heat, which is transferred to the main propellant charge and ignites it, propelling the projectile. Get a new compatible primer bulb, connect the in port to the carburetor and the out port to the return fuel line going to the tank. The fuel is then deposited into the carburetor, preparing it to make the perfect fuel-air mixture. If the bulb develops leaks, air begins to replace the fuel in the line, causing the engine to run rough or stall. Get a new primer bulb to replace the damaged one. You also have the option to opt-out of these cookies. Should the primer bulb stay hard? Replacing all components such as gaskets and fuel lines is always recommended when rebuilding or repairing equipment. Let the carburetor air dry before reassembling & testing the primer bulb (source). These cookies ensure basic functionalities and security features of the website, anonymously. The eyedropper should be filled with gasoline. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Fit the fuel return line snugly to the primer bulb. It depends on the engine and the amount of fuel in it, but 70 liters should suffice for most of the time. I have explained everything from the working of the primer bulbs to all the other questions that may knock your mind. If the primer bulb isn't working, the engine won't start. I'm Teddy, a small engine enthusiast, and occasional guitar player. Our payment security system encrypts your information during . To the point, fantasy baseball is a game where people act as general managers (and/or owners, if you will) of virtual baseball teams. The primer bulb may be damaged and wont be filled with gas. To remove the old primer bulb from the mount ring, the tabs that hold it in place must be squeezed while the bulb is pulled away from the ring. Press the primer seat into the bore with the groove on seat facing out. Its like snapping together two puzzle pieces! You may not need to fix anything else unless there is another broken or malfunctioning component, like the valve. Reply More posts you may like. Any reliance you place on such information is therefore strictly at your own risk. Primer bulbs connected to the return fuel line and the carburetor have the one-way valve on the out port. CraigFor some FREE Printable Download help Leaflets: https://www.therepairspecialistonline.com/These downloads are from my very own website and are absolutely Free. Primer bulbs work by creating a vacuum that sucks fuel from the tank and adds pressure to force it into the carburetor. She is my Rock! How to Maintain and Replace Your Waverunner Battery, Staying Safe on the Water: Tips for Solo Boaters and Avoiding Risky Situations, Dog Overboard! Use a brush with soft bristles and soapy water to scrub and clean the filter. This cookie is set by GDPR Cookie Consent plugin. Dont use abrasive detergents and cleaning agents. Unscrew the plate from the carburetor, remove the old primer bulb, and install the new one. How does the primer bulb work on a Briggs and Stratton horse? First, look for the air cleaner then remove its cap. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, . Some of our partners may process your data as a part of their legitimate business interest without asking for consent. When you leave the engine turned off for some minutes, you need to reprime the primer bulb. Thus, take apart the carburetor to check if all these vital components are working alright. Its ultimate purpose is to prime the carburetor. This cookie is set by GDPR Cookie Consent plugin. Only then will the metering valve open and facilitate the gas to flow into the main jet to be discharged to the venturi in the carburetor. I have to be careful in recommending products because I have my name and credibility at stake. Thus, inspect the usual suspects sequentially, detect the causal issues, and opt for the appropriate fixes. It works by creating a vacuum that draws fresh fuel into the intake fuel line. If you find that your primer bulb is not priming, there are a few possible causes. Next, open the vent on the gas tank and place your thumb over the opening in the hose. https://www.amazon.co.uk/shop/therepairspecialist Any stuck valves lead to a primer bulb not priming. The bulb is typically made of rubber or plastic and has a one-way valve that allows air to enter but not exit. Disassemble the tool, as required, to remove the primer bulb. 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Once thats disconnected, you can remove the old primer bulb and replace it with a new one.Reconnect the hose and reattach the carburetor cover before reconnectingthe kill switch wire tothe spark plug. The intake fuel line deposits fuel into the carburetor making it ready or "primed" for combustion. Inspect the primer bulb closely under a bright light to find any tiny pores causing air to leak. He loves sharing his insights on the latest tools available in the market. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. When the bulb is pressed and released, it creates a vacuum that draws fuel into the intake line, which then deposits it into the carburetor. Can You Put A Wakeboard Tower On Any Boat? How does a Chain Brake Work on a Chainsaw? Other reasons can include a faulty valve or gasket, or a clogged fuel line.If your boat primer bulb goes flat, there are a few things you can do to fix it. 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. Thanks!https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=P5QJK49G8V54S\u0026source=url 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. The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. When the bulb is firm, the line is charged and you can start the engine. When you push the primer bulb into the hole in the fuel tank, it makes a snapping sound that tells you its locked into place. I really hope you enjoy. Images in this video are Created and Copyrighted to Craig Kirkman of The Repair Specialist Channel and 'no' reproduction of this content is granted. The primer bulb is integral to priming, thus starting the tools engine. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Another symptom of a failing primer bulb is that it becomes increasingly difficult to press down when youre trying to start the engine. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The intake fuel line deposits fuel into the carburetor to make it ready for the engine to start. Put polythene as a replacement for the air bulb and screw it into place with the metal plate. Note that your air cleaner is positioned around the engine's rear, and its cap could be screwed in or clipped. Shop LED bulbs. This cookie is set by GDPR Cookie Consent plugin. Begin by disconnecting the kill switch wire from the spark plug. The fuel is pulled through the fuel line and into the carburetor by the bulb, and then it is pushed out of the carburetor and out of the return line. Continue with Recommended Cookies. Rinse, and air dry the filter (source). Attach the other end of the fuel line to the intake of the fuel pump if you want to check the mechanical fuel pump. Most weed trimmers have a primer bulb to prime the carburetor. It isnt seating or drawing air into the discharge port. What VHF Channel Must You Monitor On A Boat? 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. A primer bulb is a small rubber bulb near the carburetor, which one can press to "prime" the engine before startingit works by creating a vacuum that draws fresh fuel into the intake fuel line. As the name suggests, it screws into the carburetors body or the fuel line between the tank and the carburetor. Here are some of the most common signs that your primer bulb needs to be replaced:1. Check if the fuel intake hose is connected to the primer bulbs out port. Inspect the carburetor and clean all its: Inspect the diaphragms and remove grime or residual buildup if you see any. If any channel or tube is clogged, the gas will not flow through the passages of the carburetor and to the main jet when you press the primer bulb. Press into the primer cavity lining up locking tabs with the locking slot into cavity. She is the only person who believes in me, and supports me, 100% in all of my endeavours. So you press the purge bulb to force the air out and get the fuel flowing properly. How It Works. On lawnmowers, the manufacturer often locates the primer bulb between the fuel tank and air filter. It will be flooded if you dont do something. As an Amazon Associate, We may earn from qualifying purchases. Technically, priming is the process of providing the carburetor with sufficient gas so that the fuel and air can mix and be ready to combust when you start the engine. A primer bulb is a small rubber bulb near the carburetor, which one can press to prime the engine before startingit works by creating a vacuum that draws fresh fuel into the intake fuel line. Make sure they are tight and not leaking.If they are leaking, replace them. Choosing the 'best' car bulb really comes down to personal preference and what kind of bulbs your car uses. If the fuel line is kinked, it will not allow fuel to flow through and prime the bulb. If it appears to be damaged or cracked, replace it. The check valve allows fuel to be pulled into the carburetor when needed. Your primer bulb will not prime if the metering lever, pin, needle, diaphragm, and valve are broken, or any of these parts are not working normally. The engine is difficult to start. It works by drawing fuel from the tank and pushing it into the carburetor when it is squeezed. A screwdriver A pair of pliers On outboard motors, the primer bulb is in the fuel line, between the tank and engine. Look for leakage and anything clogging the primer bulb, fuel lines & filter, and carburetor. The primer bulb is a long-lasting part of the chainsaw. If the primer bulb is not working, you may need to troubleshoot it. Some of the primer bulbs have a hole in them. Primer bulbs basically have a small check valve rather than a hole. Some of the fuel in the float bowl can be displaced by a small amount of air. Please ensure that you take all proper recommended safety measures before attempting any project. Is the primer bulb supposed to fill with gas? The engine wont 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. Primer bulbs arent meant to be hard, they are designed to pump fuel to the motor before it starts, and then the fuel pump does the work, and while that is happening the bulb will not be hard. Having this knowledge give you for more confidence when undertaking any repair work on these small but tricky carburetors. What Is The Difference Between A Kayak And A Canoe. How do I know if my outboard primer is bad? 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. Why won't my primer bulb fills with gas? The most common issues are: CloggingStuck valvesFailing or broken metering parts, such as the: A carburetor has several channels to regulate the flow of fuel and air. Step 1 Inspect the carburetor bulb for cracks on its face.