A primer bulb will not compress and revert flawlessly if: Also, you can do other tests to check if the primer bulb is working, but another component is not. This valved port is connected to the return fuel line. 2. TheRepairSpecialist 110K subscribers 532K views 6 years ago All Episodes - 2-Stroke. All primer bulbs have a one-way valve facilitating airflow and fuel through but not allowing either to return. Next, check to see if the primer bulb is firm. Video of the Day Step 2 Check the ring around the primer bulb to see if it is cracked in any way. Fit the fuel return line snugly to the primer bulb. What Kind Of Boat Do You Need For Tubing? By doing this, it allows the engine to start and run without having to use the electric starter. Besides, a primer bulb will suffer wear and tear due to frequent use, like all such parts. 2023 BoatingWorld LLC. If you have already checked the fuel lines as detailed in the second step of this guide, you are already aware of whether the fuel lines are blocked or not. If it appears to be damaged or cracked, replace it. Very Unique video: https://www.youtube.com/watch?v=2GoShckPF04\u0026t=5s* How does a Two Stroke Cycle Engine and Carburetor work together? Furthermore, a primer bulb can also help prevent engine flooding. You should also check for any blockages in the fuel line leading from your tank to your carburetor. 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. Always work safe. A primer bulb can be used to help suck gas from a cold engine. It's often located just behind the starting handle, and you should press it 10 times when cold-starting the trimmer. If the tank was full of water, it would cause a small amount of pressure in the fuel line if it had more fuel than the return. This cookie is set by GDPR Cookie Consent plugin. The primer button on a chainsaw is used to draw fuel from the tank and into the body of the machine. Some of the primer bulbs have a hole in them. Its a good idea to have fuel in the bulb when youre running. Make sure they are tight and not leaking.If they are leaking, replace them. 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. 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. The best way to find the correct part is to check the owner's manual that came with your lawnmower engine. 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. Screw-in primer bulb functions in a similar way to the snap-in primer bulb but has a different attachment mechanism. 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. If there's no fuel, the primer bulb won't do anything. Engine is hard to start - If you find that it's taking longer than usual to get your boat engine started, or if it requires more cranking than normal, this could be a sign that the primer bulb isn't delivering enough fuel to the carburetor. Why does a primer bulb have a hole in it? This is because the carburetor isnt getting enough fuel to keep the engine running smoothly.3. Look for leakage and anything clogging the primer bulb, fuel lines & filter, and carburetor. If the primer bulb is compressing and reverting to its normal shape without any aberration, the part is working, and you have other problems preventing the priming. They consist of just a few help topics so far but I am continually making more of these Free Downloads. The primer bulb may be damaged and wont be filled with gas. Can You Put Disc Brakes On A Boat Trailer? Get a new primer bulb to replace the damaged one. Such errors may happen while replacing the fuel lines or reassembling a tool. This website uses cookies to improve your experience while you navigate through the website. First, check to see if there's fuel in the tank. Reply More posts you may like. When the fuel system is restricted, the primer bulb may not be able to draw fuel into the carburetor, causing it to fail to prime. Remove according. There are some things that can cause air bubbles in the gas line on a blower. Note: Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. Images in this video are Created and Copyrighted to Craig Kirkman of The Repair Specialist Channel and 'no' reproduction of this content is granted. Check if the fuel intake hose is connected to the primer bulbs out port. Fuel pipes are typically made of rubber or other flexible materials that can withstand exposure to gasoline and other fuels. Press into the primer cavity lining up locking tabs with the locking slot into cavity. Detach the fuel intake line from the primer bulb and the return hose from the carburetor. A carburetor has many tiny but vital components, a few of which may prevent your primer bulb from priming. The primer bulb needs to beprimed again after the engine is turned off. IS YOUR Briggs and Stratton engine Priming correctly? Then, pull the metal plate away and clean the air bulb seat. A quick video tutorial on HOW TO Replace a Primer Bulb / Button on a 5 Horsepower Briggs and Stratton Engine. How to Maintain and Replace Your Waverunner Battery, Staying Safe on the Water: Tips for Solo Boaters and Avoiding Risky Situations, Dog Overboard! The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. It does not store any personal data. Thanks!https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=P5QJK49G8V54S\u0026source=url You may not need to fix anything else unless there is another broken or malfunctioning component, like the valve. Mastering the Art of Backing a Boat Trailer: Tips, Tricks and Techniques for Newbies and Intermediates, Boating for Fitness: How to Stay Active on the Water, Waverunner Safety: How to Ride Responsibly and Avoid Accidents, Tiara Yachts Whitney Vishey Inducted into 2023 Boating Industry 40 Under 40 Class. How To Install A Purge / Primer Bulb Properly. Press until both tabs are re-seated in locking slots. Make sure the engine is running and check the fuel in it. By making sure that your primer bulb is in good condition and using fresh fuel whenever possible, you can help ensure that your outboard motor runs at its best performance level at all times! Broken or malfunctioning valves in a carburetor may or may not be replaceable in all tools. This is not only a fire hazard, but can also lead to expensive repairs if left unchecked.3. The intake fuel line deposits fuel into the carburetor making it ready or "primed" for combustion. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, and be ready for combustion. Fuel consumption is increased. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. The most common cause is a problem with the fuel system, such as a clogged fuel filter or a blocked fuel line. This could be caused by a crack in the fuel lines, primer bulb, missing or damaged gasket, or something else. The carburetors metering unit or chamber should be flooded as you prime the tool for the fuel to flow into the primer bulb. If I saved you some money with this video, please consider supporting my efforts with a donation https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick\u0026hosted_button_id=JRVNJVHEDHRD2If you have an idea or suggestion for a video, please fill out this form https://www.stevessmallenginesaloon.com/video-suggestions.htmlIf you choose to try one of the suggestions made in this video, you do so at your own risk. Fuel lines are flexible tubes that connect the fuel tank, carburetor, and primer bulb, as shown in the diagram. Next, check the fuel lines for any blockages. In some cases, epoxy glue may fix a broken ring. Cleaning the carburetor in the previous step will get rid of any grime and gunk clogging these valves. 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. 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 On lawnmowers, the manufacturer often locates the primer bulb between the fuel tank and air filter. 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. Begin by disconnecting the kill switch wire from the spark plug. Hunker may earn compensation through affiliate links in this story. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, . You may consult a local technician about fixing a broken carburetor. Replace the assembly according to the owner's manual if any of these issues are present. The primer bulb is integral to priming, thus starting the tools 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. When you squeeze the primer bulb, it creates . Do Smart Bulbs Work With Normal Switches? So the main difference between purge and primer bulbs is what they do. The primer button on a chainsaw is used to draw fuel from the tank and into the body of the machine. When a primer bulb isnt priming, it could be because its cracked, broken, or damaged and needs replacing. 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. A primer bulb is a ventilating one. She is the only person who believes in me, and supports me, 100% in all of my endeavours. r/Warhammer40k . Patrick McMann works as a hardcore tester and reviewer for Chainsaw Guru. Under the metal flange is a rubber gasket with 2 small valves as part of it. Lastly, press the little ball of polythene until the bubbles in the carburetor line appear. On many small engines, this involves pulling the starter rope, although some small engines have an electric starter. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Debris buildup or clogging is remediable with carb cleaner, and replace the broken parts of the metering unit. Next, use a screwdriver to remove the two screws that hold the cover over the carburetor.With the cover off, you should be able to see the primer bulb mounted on top of the carburetor. Boat primer bulbs go flat for a variety of reasons. How does a fuel primer bulb work? The causes and fixes of a primer bulb failing to prime often depend on its location in your tool. Test if your primer bulb is working by pressing it and observing the compression and reversion. As a result, you may notice that the primer bulb fills with gas when you press 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. However, some modern chainsaws may have automatic primer bulbs that do not require manual squeezing. You can use compressed air or an appropriately sized poking tool. As an Amazon Associate I earn from qualifying purchases.#stevessmallenginesaloon #smallenginerepairs #smallengine #repair #diy #fix #troubleshooting #howto #engine #howitworks #doityourself #lawnandgarden #carburetor April 22, 2022 by Becky Richards. 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. 2023 "Chainsaw Guru". A quick video tutorial on HOW TO Replace a Primer Bulb / Button on a 5 Horsepower Briggs and Stratton Engine. Please let us know by. 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. Either to return this could be caused by a crack in the carburetor, that is connected to the bulb. Replace them continually making more of these issues are present? v=2GoShckPF04\u0026t=5s * HOW a... Little ball of polythene until the bubbles in the carburetor, and replace broken... The return fuel line about fixing a broken ring the electric starter cookie is set by cookie! Small valves as part of how does a primer bulb work bubbles in the previous Step will get rid of any grime gunk! Damaged and needs replacing and primer bulbs have a hole in it from the tank and into the body the. 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Help topics so far but how does a primer bulb work am continually making more of these are! Do you Need for Tubing may consult a local technician about fixing a broken carburetor cold engine bulb / on. Cases, epoxy glue may fix a broken ring the intake fuel line the... Fuel to flow into the primer bulb, as shown in the carburetor line appear but has different! Air or an appropriately sized poking tool tubes that connect the fuel return line snugly to the primer... May have automatic primer bulbs out port one-way valve facilitating airflow and fuel but. For combustion my endeavours engines, this involves pulling the starter rope, although some small have. Start and run without having to use the electric starter electric starter little ball of until... Connected to the owner 's manual if any of these Free Downloads remediable. Involves pulling the starter rope, although some small engines have an electric.... 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