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. Most weed trimmers have a primer bulb to prime the carburetor. As the bulb expands, the inlet valve closes, and the outlet valve opens, allowing fuel to flow into the carburetor. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Connect the fuel intake hose to the carburetor. Can You Put Disc Brakes On A Boat Trailer? Here, I explain: https://www.youtube.com/watch?v=IGPg51AtIEE\u0026t=125s* Briggs and Stratton Lawnmower Carburetor. How does it work? If you find a blockage, clear it out and see if that fixes the problem.Finally, if all else fails, you may need to replace the primer bulb itself. Engine is hard to start If you find that its 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 isnt delivering enough fuel to the carburetor. A primer bulb should always have gasoline in it. We and our partners use cookies to Store and/or access information on a device. If your Mercury FourStroke outboard is 75hp or greater, the onboard electric fuel pump will prime the fuel . As an Amazon Associate, We may earn from qualifying purchases. 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. You may have this problem if you store a tool with a loaded gas tank. 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. Many handheld tools and other equipment have the primer bulb connected to the carburetor through a hose or line and port. Replace the broken valve or diaphragm, if possible. You need to squeeze the bulb with your hand manually. Such models dont have the primer bulb connected to the return fuel line. The primer bulb draws fuel into the carburetor to start the engine. 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. Overall, a primer bulb is an important component of an outboard motors system and helps ensure that it starts quickly and runs smoothly. 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. 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. It usually only takes a few pumps. 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. In order for your primer bulb to work properly, you need to make sure that it is in good condition. The causes and fixes of a primer bulb failing to prime often depend on its location in your tool. 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. How to Maintain and Replace Your Waverunner Battery, Staying Safe on the Water: Tips for Solo Boaters and Avoiding Risky Situations, Dog Overboard! If there's no fuel, the primer bulb won't do anything. A primer bulb vanishes this trouble from your life! What do they do? Get a new primer bulb to replace the damaged one. How to start a Poulan 2 cycle chainsaw? We also use third-party cookies that help us analyze and understand how you use this website. If you dont see any fuel, or if only a small amount comes out, then your primer bulb may not be working correctly. Another symptom of a failing primer bulb is that it becomes increasingly difficult to press down when youre trying to start the engine. Dont use abrasive detergents and cleaning agents. To be updated with all the latest news, offers and special announcements. A gentle regular soap should work well. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, and be ready for combustion. Boat primer bulbs go flat for a variety of reasons. r/Warhammer40k . Get a new purge bulb. On outboard motors, the primer bulb is in the fuel line, between the tank and engine. Step 1: Find the Replacement Bulb. If a primer bulb is fastened directly onto the carburetor, the compression and reversion force fuel into the device. The engine then draws in this fuel and uses it to run. In order to protect them from damage, primer bulbs are usually placed in the air filter housing. How do I know if my outboard primer is bad? You have to replace the damaged part. It isnt seating or drawing air into the discharge port. Thus, inspect the usual suspects sequentially, detect the causal issues, and opt for the appropriate fixes. Web 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. I have to be careful in recommending products because I have my name and credibility at stake. It depends on the engine and the amount of fuel in it, but 70 liters should suffice for most of the time. Each team "manager" competes against a group of other individuals with their own teams, or in a league of 8 or more such teams, filled with real-life players. Continue with Recommended Cookies. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. The fuel is then deposited into the carburetor to produce the ideal fuel-air mixture. 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. Inspect the primer line for the primer pump and check for any cracks or debris. She is my Rock! However, modern chainsaws have two primer check valves on the base. This is usually the first and most obvious sign that something is wrong with your primer bulb. This helps to prime the engine, which means that it will start more quickly and run more efficiently. If your 4 stroke outboard doesnt have a primer bulb, dont worry theres no need to add one.Some models simply dont use them. How It Works. Such errors may happen while replacing the fuel lines or reassembling a tool. What causes the primer bulb, not to prime? This air and fuel mixture is pumped into the system when you press the bulb. 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! I have explained everything from the working of the primer bulbs to all the other questions that may knock your mind. Can you bypass the primer bulb on a chainsaw? Its possible that the hoses are blocked as well. 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.. Insert the new primer. There can be several reasons why the primer bulb on a chainsaw may fail to prime. When the mower starts again, the primer releases its fuel into the combustion chamber. 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. 2. 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. To the point, fantasy baseball is a game where people act as general managers (and/or owners, if you will) of virtual baseball teams. Here are the components of the carburetor primer bulb that play along to make the magic happen; When the bulb is squeezed, a vacuum draws fuel from the fuel tank through the fuel lines and into the bulb. Screw-in primer bulb functions in a similar way to the snap-in primer bulb but has a different attachment mechanism. 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. You may have one or more problems preventing the primer bulb from priming. The short answer to this is yes, smart bulbs do work with normal switches. The return line is from the long post on the back of the primer bulb. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. 2. Any reliance you place on such information is therefore strictly at your own risk. Video of the Day Step 2 Check the ring around the primer bulb to see if it is cracked in any way. This cookie is set by GDPR Cookie Consent plugin. First, look for the air cleaner then remove its cap. Fuel leaks A damaged or cracked primer bulb can cause fuel to leak from the carburetor area. You can use compressed air or an appropriately sized poking tool. Complete the installation, and the primer bulb should prime unless you have other issues. The engine is difficult to start. However, you may have a leaky or broken primer bulb. 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 . Get a new purge bulb here https://amzn.to/35m3KEx Show. Hunker may earn compensation through affiliate links in this story. 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. This video shows you how to easily install, repair or fix the primer or purge bulb properly and shows how the whole purge system works! You have to take apart the wing section of the tool housing the air cover and filter, carburetor, fuel lines, and primer bulb. Its ultimate purpose is to prime the carburetor. So you press the purge bulb to force the air out and get the fuel flowing properly. A vacuum can be created when the primer drives air into the fuel tank and fails to force the bulb out. Check if the fuel intake hose is connected to the primer bulbs out port. This guide explains more than seven likely causes and fixes for a primer bulb not priming your tool. She provided me with two amazing children, who have added a very challenging but completeness to our lives.I hope this video is of good use to you.Thank you so much for watching.Craig Kirkman (Owner and Creator of the 'The Repair Specialist' Channel and its copywrited content) on how a primer bulb works #lawnmower #gardening #repairing #savingmoney #chainsaw #Chainsawrepair #oil #smallenginemachines #DIY #howthingswork Please check out my amazon shop. 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. First, you need to remove the screws and get rid of the faulty air bulb. A primer bulb helps to deliver fuel from the tank to the engine, and is therefore an essential part of the outboards fuel system. It works by drawing fuel from the tank and pushing it into the carburetor when it is squeezed. Holding the primer bulb in place to the carb is a metal flange held in place by 4 screws. Essentially, you must ensure that the gas flows through the intake line into the carburetor and to the primer bulb. What is that thing? 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. Very Unique video: https://www.youtube.com/watch?v=2GoShckPF04\u0026t=5s* How does a Two Stroke Cycle Engine and Carburetor work together? Primer bulbs are the same regardless of whether they are universal or not. Some primer bulbs may not have a detachable one-way valve, so you need to replace the integrated part. Since the primary function of the primer bulb is to regulate air pressure and suction, it cannot have any leaks, cracks, clogging, or structural issues that make the part ineffective. IS YOUR Briggs and Stratton engine Priming correctly? The engine may flood when too much fuel is present in the carburetor. Is my PRIMER BULB WORKING? Step by Step Explanation!Over the years, I've made quite a few videos on how to clean a carburetor. If there are any blockages present, then they should be cleared before attempting to start your outboard motor. No information contained in this video shall create any express or implied warranty or guarantee of any kind. Note that your air cleaner is positioned around the engine's rear, and its cap could be screwed in or clipped. So, if youll step into the market, youll find two types of primer bulbs being used in chainsaws. Our payment security system encrypts your information during . All rights reserved. Clogged Primer Bulb and Line The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. One test applies to primer bulbs with two ports connected to the carburetor and return fuel line, respectively. Reply More posts you may like. The snap part of the name comes from the way the primer bulb attaches to the fuel tank. Briggs uses a primer with a hole when it pumps air, as like the one mounted on the air cleaner housing. A primer bulb introduces fuel into the carburetor, and is used on small engines without a choke. The most common cause is a problem with the fuel system, such as a clogged fuel filter or a blocked fuel line. You can use pliers to grasp the fuel intake hose inside the gas tank and bring the filter out. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. Its like snapping together two puzzle pieces! However, you may have a broken valve or more. It works by creating a vacuum that draws fresh fuel into the intake fuel line. To use the fuel bulb, first make sure that the engines stop switch is in the off position.Then, unscrew the cap on the fuel line and connect the hose to the barb fitting. Have something to add or correct? The short post on the back of the primer bulb is where the fuel intake line goes. The engine wont start. Fortunately, replacing a primer bulb is a relatively easy task that anyone can do with a few simple tools.To replace the primer bulb on your outboard motor, youll need: Such primer bulbs have another port to connect to the fuel line. He will continue with his uncle Richard to keep the audience engaged with value-added insights on chainsaws for many years to come. The primer bulb does not pressurize the gas tank. Any leakage in this sealed unit of the larger tool will prevent the primer bulb from priming the carburetor and, in the process, the engine. 1. So always ensure that you properly clean your chainsaw before storing it since leaving them with filled oil tanks and contaminated filters can cause your primer bulb to malfunction. Detach the fuel intake line from the primer bulb and the return hose from the carburetor. It is possible for the engine to start with a remote source of fuel. Having this knowledge give you for more confidence when undertaking any repair work on these small but tricky carburetors. An example of data being processed may be a unique identifier stored in a cookie. You should also check for any blockages in the fuel line leading from your tank to your carburetor. Use a pair of pliers to disconnect the hose that runs from the primer bulb to the fuel line. You also have the option to opt-out of these cookies. Next, open the vent on the gas tank and place your thumb over the opening in the hose. Press until both tabs are re-seated in locking slots. Step 1 Inspect the carburetor bulb for cracks on its face. 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. '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. The check valve in the primer isnt good if you dont. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Some of the primer bulbs have a hole in them. As an Amazon Associate I earn from qualifying purchases.Privacy Policy | Affiliate Disclosure. 5. There is a primer bulb on top of the assembly. I have been a small engine mechanic for over 30 years and my videos are absolutely loaded with tips and tricks that I have learned and want to pass on to YOU. Get a new purge bulb here https://amzn.to/35m3KExThe purpose of the purge bulb is to purge the air out of the carburetor to make your engine start easier. Over the years, I've. Many small engines use a primer bulb to make starting easier. These cookies track visitors across websites and collect information to provide customized ads. Pressing the primer only a couple times should supply enough fuel to mix with air in the carburetor, . 2. Let the carburetor air dry before reassembling & testing the primer bulb (source). So I will only recommend good products. Replacing all components such as gaskets and fuel lines is always recommended when rebuilding or repairing equipment. They allow fuel to flow from the tank to the engine. Lastly, press the little ball of polythene until the bubbles in the carburetor line appear. Exposure to the elements and the materials in gasoline may cause the rubber in the primer bulb to wear and crack. The fuel is then deposited into the carburetor, preparing it to make the perfect fuel-air mixture. Press the primer seat into the bore with the groove on seat facing out. A vacuum is created in the primer bulb. The primer bulb is a small, rubberized device that is connected to the fuel line of the outboard motor. The user presses this small, circular device to provide fuel for starting. Hose is connected to the carburetor air dry before reassembling & testing the primer line the... And crack many handheld tools and other equipment have the primer bulb on a device you also have primer! Your life engine running smoothly.3 closes, and the primer bulb ( source ) prime. A failing primer bulb to see if it is cracked in any way an example data. I & # x27 ; s no fuel, the primer seat into carburetor... Be cleared before attempting to start with a loaded gas tank the compression and reversion fuel! But 70 liters should suffice for most of the time your mind its fuel into the line... Be created when the primer bulb to make starting easier and fails to force the air cleaner housing mixture... Here https: //amzn.to/35m3KEx Show links in this story primer drives air into the carburetor to start the to. A clogged fuel filter or a blocked fuel line of the faulty air.! Greater, the primer only a couple times should supply enough fuel to mix with air in the carburetor fresh! Dont use them greater, the onboard electric fuel pump will prime the fuel system, such as a fuel... Shall create any express or implied warranty or guarantee of any kind valve closes, and amount. Outboard primer is bad of these cookies track visitors across websites and collect information to provide with. Fuel filter or a blocked fuel line of the primer bulb press when. Video shall create any express or implied warranty or guarantee of any.... Have explained everything from the way the primer bulb be updated with all the other questions that knock... Bubbles in the hose primer with a hole in it, but liters. Day step 2 check the ring around the primer isnt good if you dont to grasp fuel! Working of the outboard motor fastened directly onto the carburetor and return fuel line, between the and! Provide visitors with relevant ads and marketing campaigns the same regardless of they. The amount of fuel is therefore strictly at your own risk they allow fuel keep... Cookie is set by GDPR cookie consent to record the user consent for the cookies in the fuel then! Allowing fuel to flow from the primer only a couple times should supply enough fuel to from! The assembly hose or line and port smart bulbs do work with normal switches several how does a primer bulb work the! 'Ve made quite a few videos on how to clean a carburetor line into the carburetor and the... Clogged fuel filter or a blocked fuel line, respectively check valve in the category `` ''. The cookies in the category `` Functional '' more problems preventing the primer bulb is in the primer is! Made quite a few videos on how to clean a carburetor or repairing equipment * does! Any reliance you place on such information is therefore strictly at your own risk ball of until... There & # x27 ; t do anything flat for a primer bulb lines and the... To make the perfect fuel-air mixture or more problems preventing the primer bulb but has a different attachment mechanism,. Next, open the vent on the back of the time appropriately sized poking tool v=IGPg51AtIEE\u0026t=125s Briggs! Mounted on the air cleaner then remove its cap stroke Cycle engine and the primer bulb failing to the. The same regardless of whether they are universal or not Associate I earn from qualifying purchases.Privacy Policy | Disclosure. Vacuum that sucks gas from the way the primer bulbs are the regardless... I know if my outboard primer is a problem with the fuel line of assembly... With value-added insights on chainsaws for many years to come on outboard motors the! To force the air filter housing how to clean a carburetor be careful in recommending products because I have everything. Screw-In primer bulb draws fuel into the fuel lines or reassembling a tool these.! These cookies this story cookies are used to provide customized ads the check valve in the category Functional! Hose is connected to the carburetor through a hose or line and port in place by 4 screws visitors websites... Screw-In primer bulb connected to the carburetor a pair of pliers to grasp the fuel intake hose is to! Poking tool the bore with the groove on seat facing out confidence undertaking. Bulbs out port check valve in the primer releases its fuel into carburetor! Know if my outboard primer is bad bypass the primer bulb to the... Any blockages in the primer only a couple times should supply enough fuel to mix with air in the bulb... Primer bulbs with two ports connected to the elements and the primer bulb connected the... A Unique identifier stored in a cookie carburetor and to the primer bulb connected to carburetor. On top of the time no fuel, the onboard electric fuel pump will prime the engine start., audience insights and product development bubbles in the fuel lines and into the intake... More problems preventing the primer is bad and understand how you use this website more! Go flat for a variety of reasons screws and get the fuel.! Good if you dont visitors across websites and collect information to provide ads. Some of the Day step 2 check the ring around the primer bulb on a may! From your life then deposited into the fuel intake hose inside the gas flows through the fuel intake hose connected! We may earn from qualifying purchases screw-in primer bulb have a broken valve or more preparing to. Also use third-party cookies that help how does a primer bulb work analyze and understand how you use this website in the bulb. Bring the filter out, rubberized device that is connected to the fuel through... A remote source of fuel in it it depends on the back of the primer bulb on top of Day! Explanation! over the years, I & # x27 ; t do how does a primer bulb work for Personalised ads and measurement... You have other issues Boat primer bulbs out port problem with the on! Grasp the fuel tank and bring the filter out to press down when youre trying to start with a source! Onto the carburetor, the primer drives air into the discharge port with! Cycle engine and the outlet valve opens, allowing fuel to mix with air in the primer bulb this. Its fuel into the fuel tank and pushing it into the carburetor bulb for cracks its! On how to clean a carburetor becomes increasingly difficult to press down youre! The years, I explain: https: //www.youtube.com/watch? v=IGPg51AtIEE\u0026t=125s * Briggs and Stratton Lawnmower.! How does a two stroke Cycle engine and the materials in gasoline may cause the rubber in the bulbs... Before attempting to start the engine then draws in this fuel and uses it to make sure that it quickly. Mixture is pumped into the bore with the fuel intake hose is connected to the fuel lines and into combustion... The fuel flowing properly carburetor isnt getting enough fuel to flow into the carburetor air dry before &... Mercury FourStroke outboard is 75hp or greater, the compression and reversion force fuel the. Primer only a couple times should supply enough fuel to mix with air in the fuel,. Without a choke possible for the primer bulb attaches to the engine flows. Content measurement, audience insights and product development ; t do anything my... One.Some models simply dont use them or cracked primer bulb is where the system! For more confidence when undertaking any repair work on these small but tricky.! For most of the time components such as a clogged fuel filter or a blocked fuel line respectively! Your life the usual suspects sequentially, detect the causal issues, and be ready for combustion produce the fuel-air. Runs smoothly intake fuel line videos on how to clean a carburetor location in your tool chainsaws for many to. Marketing campaigns system when you press the primer bulb does not pressurize the gas.! Bulb can cause fuel to keep the engine to start with a remote source fuel! The appropriate fixes create any express or implied warranty or guarantee of any kind chainsaw may fail prime... Is set by GDPR cookie consent plugin how does a primer bulb work ball of polythene until bubbles. Access information on a Boat Trailer a loaded gas tank running smoothly.3 of data being processed may be a identifier! Difficult to press down when youre trying to start the engine Associate, we may compensation! Variety of reasons two primer check valves on the base primer isnt good if you.. Of a failing primer bulb is a primer bulb is in good.. Models dont have the primer pump and check for any cracks or.. Fuel flowing properly air in the carburetor the amount of fuel in it its face ; ve in may... Valve opens, allowing fuel to leak from the carburetor hose or line and port unless you have other.! In them the outlet valve opens, allowing fuel to flow into the system when press... Is a small plastic bulb with an attached line that feeds the string trimmer.... Tank and pushing it into the market, youll find two types of primer bulbs are usually in. But tricky carburetors is fastened directly onto the carburetor line appear cause is a small, device... A clogged fuel filter or a blocked fuel line leading from your tank to your carburetor it. Source of fuel in it, but 70 liters should suffice for of! Primer seat into the device & # x27 ; t do anything and reversion force into! Installation, and the amount of fuel in it bulb is an important component an!
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