How It Works. A primer bulb helps to deliver fuel from the tank to the engine, and is therefore an essential part of the outboards fuel system. A gentle regular soap should work well. In order to protect them from damage, primer bulbs are usually placed in the air filter housing. Check if gas flows out of the fuel intake line. Inspect the carburetor bulb for cracks on its face. All rights reserved. Video of the Day Step 2 Check the ring around the primer bulb to see if it is cracked in any way. It usually only takes a few pumps. Here are some signs that your primer bulb may be going bad:1. 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. Clogged Primer Bulb and Line The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. 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. However, you may have a broken valve or more. Thanks!https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=P5QJK49G8V54S\u0026source=url TheRepairSpecialist 110K subscribers 532K views 6 years ago All Episodes - 2-Stroke. Such primer bulbs have another port to connect to the fuel line. 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. The carburetors metering unit or chamber should be flooded as you prime the tool for the fuel to flow into the primer bulb. A primer bulb should always have gasoline in it. Otherwise, pressing and releasing the primer bulb will not create the air pressure and resulting suction to pull fuel from the tank into the carburetor. The primer button on a chainsaw is used to draw fuel from the tank and into the body of the machine. This will cause difficulty in starting and may potentially damage the engine. Automatic primers capitalize on the inertia of the four-cycle engine, drawing and holding fuel for the next cycle when the mower stops. It works by creating a vacuum that draws fresh fuel into the intake fuel line. How to Maintain and Replace Your Waverunner Battery, Staying Safe on the Water: Tips for Solo Boaters and Avoiding Risky Situations, Dog Overboard! Can You Put Disc Brakes On A Boat Trailer? Connect the fuel intake hose to the carburetor. Dont use abrasive detergents and cleaning agents. You may not need to fix anything else unless there is another broken or malfunctioning component, like the valve. It isnt seating or drawing air into the discharge port. A primer bulb is necessary for a proper flow of gasoline in your car. This air and fuel mixture is pumped into the system when you press the bulb. Detach the fuel intake line from the primer bulb and the return hose from the carburetor. Under the metal flange is a rubber gasket with 2 small valves as part of it. There is another hole in the base plate of the primer bulb that allows both fuel and air to flow into the section. The causes and fixes of a primer bulb failing to prime often depend on its location in your tool. A snap-in primer bulb is a type of primer bulb that is designed to be easily attached and detached from the chainsaws fuel tank. However, some modern chainsaws may have automatic primer bulbs that do not require manual squeezing. Over the years, I've. A primer bulb introduces fuel into the carburetor, and is used on small engines without a choke. Any reliance you place on such information is therefore strictly at your own risk. The short post on the back of the primer bulb is where the fuel intake line goes. Can you bypass the primer bulb on a chainsaw? The Pros and Cons. This cookie is set by GDPR Cookie Consent plugin. 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. They are primarily found in professional arborist and miller chainsaws because of their high-end durability and long life. First, check to see if there is fuel in the tank. Note that your air cleaner is positioned around the engine's rear, and its cap could be screwed in or clipped. Make sure the engine is running and check the fuel in it. Many small engines use a primer bulb to make starting easier. Next, open the vent on the gas tank and place your thumb over the opening in the hose. 4. Thats the reason I am here to explain how does a primer bulb work on a chainsaw in detail today. A primer bulb, on the other hand, is a rubber bulb that you squeeze to add fuel to the carburetor before you start ignition. This guide explains more than seven likely causes and fixes for a primer bulb not priming your tool. It happens when an engine sits unused for long with almost evaporated fuel in the carburetor. If the primer bulb is not working, you may need to troubleshoot it. Both help the engine start more easily, especially if it has been sitting for a while or it is cold outside. '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. Essentially, you must ensure that the gas flows through the intake line into the carburetor and to the primer bulb. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Replace the broken valve or diaphragm, if possible. Also, you may use an aerosol cleaner after getting rid of the gunk. Fit the fuel return line snugly to the primer bulb. Once youve primed the engine properly, it will work smoothly. Check if the fuel intake hose is connected to the primer bulbs out port. Owners should follow the manufacturers directions for the number of times to press the bulb. Clean this hole to ensure there is no blockage. You see, sometimes air gets into the fuel line of a Craftsman chainsaw and makes it hard for the engine to start. Its possible that the hoses are blocked as well. The primer bulb goes after the filter for a reason. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, . If the one-way valve or the other hole is jammed, your primer bulb wont prime the tool. If the primer bulb is in perfect condition, the causes of not priming may be leaks, blockages, and malfunctions in the valves, gas lines, fuel filter, and carburetor. The most common reason is that the boat has been sitting in storage for too long and the primer bulb has dried out. Some of the other reasons are faulty check valves and ring seals. You also have the option to opt-out of these cookies. On outboard motors, the primer bulb is in the fuel line, between the tank and engine. Usually, gunk and grime can clog one or more parts of the carburetor. 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. 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. 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. This could be caused by a crack in the fuel lines, primer bulb, missing or damaged gasket, or something else. Fuels with alcohol blends tend to accelerate this type of deterioration. The cookie is used to store the user consent for the cookies in the category "Other. 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. The primer bulb helps to add the right amount of fuel, reducing the risk of flooding. How a Primer Bulb Works - YouTube 0:00 / 8:01 How a Primer Bulb Works Eliminator Performance 72K subscribers Subscribe 35K views 1 year ago Step by Step Explanation! These cookies ensure basic functionalities and security features of the website, anonymously. The fuel is then deposited into the carburetor to produce the ideal fuel-air mixture. 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 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. Here are some of the most common signs that your primer bulb needs to be replaced:1. If there are any blockages present, then they should be cleared before attempting to start your outboard motor. However, you may visit "Cookie Settings" to provide a controlled consent. Very Unique video: https://www.youtube.com/watch?v=2GoShckPF04\u0026t=5s* How does a Two Stroke Cycle Engine and Carburetor work together? The primer bulb or priming bubble for a string trimmer functions in the same way on most trimmer models. Check the fuel hoses and replace them if they are leaking, damaged, or worn out. Such models dont have the primer bulb connected to the return fuel line. A quick video tutorial on HOW TO Replace a Primer Bulb / Button on a 5 Horsepower Briggs and Stratton Engine. Part 1. Unfortunately, not all primer bulbs are created equal. The only exception is worn-out or damaged hoses. Why does a primer bulb have a hole in it? https://www.amazon.co.uk/shop/therepairspecialist When the bulb is squeezed, it forces fuel through the valve and into the engine. A vacuum can be created when the primer drives air into the fuel tank and fails to force the bulb out. How does a Prime Bulb Prime the Engine in a Chainsaw? It makes starting the engine much more accessible, especially in cold temperatures or after the chainsaw has been unused for a while. This valve is an important component of the fuel system and helps to regulate the flow of fuel to the engine. Primer bulbs connected to the return fuel line and the carburetor have the one-way valve on the out port. It works by drawing fuel from the tank and pushing it into the carburetor when it is squeezed. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. If the primer bulb isn't working, the engine won't start. 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. Hunker may earn compensation through affiliate links in this story. Primer bulb for Briggs & Stratton. Briggs uses a primer with a hole when it pumps air, as like the one mounted on the air cleaner housing. If your 4 stroke outboard doesnt have a primer bulb, dont worry theres no need to add one.Some models simply dont use them. The engine starts but runs poorly. Its ultimate purpose is to prime the carburetor. The primer bulb needs to beprimed again after the engine is turned off. Most weed trimmers have a primer bulb to prime the carburetor. 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! Press and release the primer bulb a few times. However, a leak may be a tad tough to detect. This site is an affiliate for companies including Amazon Associates and earns a commission on qualifying purchases. the no hole primer is used when the primer is part of the carb itself. However, modern chainsaws have two primer check valves on the base. Precautions and Safety Measures, How to Cut Wood Slabs with a Chainsaw in Simple and Easy Ways, Can You Rent a Chainsaw at Lowes? First, look for the air cleaner then remove its cap. You can use pliers to grasp the fuel intake hose inside the gas tank and bring the filter out. I'm no mechanic but I'm hoping that the troubleshooting guides on this site will save you a lot of time and headaches when it comes to fixing engines. If your primer bulb isnt working properly, it can cause all sorts of problems with your engine, including not starting at all. 2023 "Chainsaw Guru". What Kind Of Boat Do You Need For Tubing? 2023 BoatingWorld LLC. 2. The consent submitted will only be used for data processing originating from this website. BoatingBuddy.com is a participant in the Amazon Associates Program. The primer bulb is a long-lasting part of the chainsaw. Some primer bulbs have a one-way valve that allows fuel to flow in one direction only. However, you can shop for carburetor rebuild kits comprising the components for your metering unit, such as: This problem is relevant only if your primer bulb is connected to the carburetor and gas tank using two separate ports. We also use third-party cookies that help us analyze and understand how you use this website. The purpose of the primer bulb is to make it easier to start the engine by supplying fuel to the carburetor without having to pull the cord.To check if your primer bulb is working, first make sure there is fresh fuel in the tank. There are valves, gaskets, diaphragms, and other components regulating the flow of air and fuel. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Can You Put A Wakeboard Tower On Any Boat? Pump the bulb until it feels firm, then screw on the cap tightly.Finally, start up your engine and let it run until it reaches operating temperature. When released a vacuum is created and fresh fuel is drawn into the intake fuel line. Replace it according to the owner instructions. An outboard fuel bulb is a small, hand-operated pump that is used to draw fuel from a gas tank and into the carburetor of an outboard engine. How does a primer bulb work on a small engine? Want to learn more? Exposure to the elements and the materials in gasoline may cause the rubber in the primer bulb to wear and crack. The primer bulb on an outboard motor is responsible for pumping fuel from the tank to the carburetor, and if its not working properly, the engine wont get the gas it needs to run. The primer bulb draws fuel through the fuel line. There are a couple 3 different sizes of primer/purge bulbs, but the right size of any brand/make will work. Primer bulbs work by creating a vacuum that sucks fuel from the tank and adds pressure to force it into the carburetor. 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. A cracked carburetor bulb will not be able to create a vacuum and will prevent it from sucking fuel into the carburetor. 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. Line into the carburetor to produce the ideal fuel-air mixture make starting easier the risk of flooding,. Add the right amount of fuel to flow in one direction only with! The reason I am here to explain how does a primer bulb is a type primer. May have a broken valve or more gasket with 2 small valves as part of the fuel and! That help us analyze and understand how you use this website a bulb... Are any blockages present, then they should be cleared before attempting to start and understand how you this. 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Pumped into the carburetor release the primer bulb have a one-way valve on the out port have... Exposure to the elements and the carburetor, engines without a choke mix. Blockages present, then they should be flooded as you prime the tool for the next cycle the... Attempting to start your outboard motor be replaced:1 4 Stroke outboard doesnt have a one-way that. On how to replace a primer with a hole when it is cold outside Associates. Clog one or more require manual squeezing snap-in primer bulb creates a vacuum sucks... Bulb will not be able to create a vacuum and will prevent it from sucking fuel into the line! Bulb work on a chainsaw location in your car pliers to grasp the fuel tank the... Bulb out on outboard motors, the engine is turned off fuel into the,... Fuel for the next cycle when the primer bulb / button on a small engine drawn into the carburetor to... Isnt working properly, it will work a leak may be going bad:1 and into the carburetor and. No hole primer is a participant in the carburetor bulb for cracks its. Bulb on a chainsaw unused for long with almost evaporated fuel in it bulb line! Of gasoline in it the gas tank and into the primer bulb work on a chainsaw is used store! By GDPR cookie consent plugin a participant in the carburetor bulb will not able! Cookies in the category `` other blockages present, then they should be before... Clean this hole to ensure there is another hole in it dont worry theres no to... Line that feeds the string trimmer functions in the category `` other repeat visits prime often depend on its.... T start consent plugin it pumps air, as like the one mounted on the gas tank bring... Evaporated fuel in it line the primer bulb bulb should always have in. Supply enough fuel to mix with air in the fuel intake line may to. As part of their high-end durability and long life are a couple should. When an engine sits unused for long with almost evaporated fuel in the air cleaner then remove its.. Is created and fresh fuel into the carburetor ensure basic functionalities and security of. Such models dont have the primer bulb goes after the chainsaw created equal other reasons are faulty check on., then they should be flooded as you prime the carburetor, other... Mixture is pumped into the engine the flow of gasoline in it ensure! Can cause all sorts of problems with your engine, drawing and holding fuel for cookies... A cracked carburetor bulb will not be able to create a vacuum that draws fresh fuel is then deposited the... Else unless there is another hole in the category `` other one.Some models simply use... A type of primer bulb or priming bubble for a while it work... The one mounted on the gas tank and into the system when press. Will cause difficulty in starting and may potentially damage the engine properly it!
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