When you release the bulb after pressing, suction causes the flexible edges of the valve to rise and fuel enters the bulb. Clean out the housing. © Copyright 2020 Hearst Communications, Inc. When preformed with metering side open (exposed)-- when I prime it with the bulb again (1.5 times is enough) and it gets to full(!!) When I took it apart I noticed that the little orange valve under the bulb was torn, so I replaced it with a black one. Several priming strokes -- always consult your lawn mower's owner's manual for the approximate number -- should draw enough fuel to catch when the spark plug fires. To replace it, simply pull it off with a pair of pliers. I notice that my tools, such as my anvil... My Ariens snow blower has a manual choke lever and a primer bulb. £1.65. But on the other times, the carburetor bowl remains empty and there is no gas remain in the bowl. When the primer won't prime, the engine won't run. The primer bulb feels … So I might be able to tuck it in about the filter. A primer bulb can be pumped by hand but must be pressed three or four times to do its job. CLR got some lime or... Hi,I'm trying to replace a fluorescent bulb (1500mm x 38mm). Contact options for registered users. Replacing a primer bulb is simple -- most are held in place by a lock ring. There are only a few reasons that this simple part fails to do its job. Dumped all the old fuel out, refilled with good, always had to play with the choke but it would run and serve it's purpose. Primers push air into the carburetor, forcing it to mix with fuel and move into the piston cylinder. Put the new clip on the primer bulb with tabs facing out. Was running good before it was stored for winter, son-in -law left outside under deck. Shop a huge online selection at eBay.com. help. The primer on your machine is one of two types: push bulb or automatic. I filled it up with fuel just in case it was too low tried starting again, started then shut down. So, about six months ago I reported on by success fixing the leaf blower. It had to go in the shop right after I bought it almost 2 years ago because the recoil starter would pull halfway out and then snap back into the engine with a vengeance. The blower (a Poulan, with Walbro model WT875-A) is only 3-years old, so I don't suspect it would need an o/h kit. While some riding and push lawnmowers feature a choke plate to allow easy starts, others come with a primer bulb that’s made out of rubber. A WK ago I started it, it ran for about 15min and shut down, I started it again and it shut down almost immediately. Lack of this movement means the primer hasn't done its job. I was using my pressure washer and it just quit running. 221 sold. If it fails, the spark plug might click, but there's no fuel to burn. Wouldn't start, replaced primer bulb and air filter,spark plug,fuel line. Make sure to use a new gasket between the float bowl & the carb body & the carb to the intake 'cus if they leak, the primer pressure will escape thru the float bowl & not push … I need to replace a burned out bulb that I can't remove. I am completely stuck. Dust, dirt and even particles of rust can get into the fuel filter, the air filter or the apertures through which the gas and air travel to get to the carburetor. The primer gives the intake a shot of raw gas First, drain ALL the fuel, including the carb bowl. I received a pot of assorted bulbs from my son for Valentines. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker, How to Replace the Primer on a Gas-Powered Trimmer. To make sure the lines are right, I unhook the longer one with the filter from the carb, push primer a few times and no gas comes out of the carb line. Still no go, if you say primer bulb shows fuel in it, and you press the primer bulb say 10x and choke on and still no fuel in engine, the carburetor is either not adjusted to allow fuel to enter engine, new carb. In addition to obstruction of apertures and obstructions in fuel or air filters, an automatic choke might not do its job if it has been sitting for long enough for that dollop of fuel it stores to evaporate. We know that a primer bulb transmits gas in the carburetor bowl to turn the mower on. I have a Walbro carburetor and the primer bulb appears to work, as it is drawing fuel into the bulb but no fuel is going to the carburetor. Automatic primers capitalize on the inertia of the four-cycle engine, drawing and holding fuel for the next cycle when the mower stops. I'm pretty new to taking care of the lawn and equipment myself but I'm learning. Next, reach back into where the bulb came off, grab the clip and pull out. HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. The push bulb primer sits on the outside of the carburetor and the automatic primer works from within it. Sear's craftsman self propelled walk behind, briggs and stratton engine, mower model,917378070. It's unusual but a new Stihl would probably fix it. Normally you are talking about $45 an hour or so. Please help out a mom trying to relearn life. Tried to start again and I noticed that when I push the bulb it blows air but doesn't push the fuel to fill the bulb. Repairing a Lawnmower Primer Bulb Step 1 Check the primer bulb to make sure it is working. With a primer bulb, starting the lawn mower is especially easy because it sends gas into the carburetor bowl only when you need it. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. Fast & Free shipping on many items! Briggs and Stratton: How Is the Carburetor Adjusted? Free postage. When pressed it draws gas from the tank and lets it in to the carburetor. £2.39. The push bulb depends on a vacuum to draw fuel into the carburetor. Craftsman mower 10 t0 15 - Answered by a verified Technician While some machines have a choke plate, others have a primer bulb made out of rubber. It sits between the carb and the air filter. Sometimes you have to replace the whole primer assembly (recommended anyway) and sometimes you can just replace that diaphragm. Blower, lawn mower, weed eater, trimmer ... 2 x Primer Bulbs For Homelite Echo Stihl Ryobi Poulan Zama Gas Fuel Bulb Pumps. The primer bulb should have some type of a in/out diaphragm under it. Her six children and stepchildren served as subjects of editorials during her tenure as a local newspaper editor. So far I have replaced the bent blade and sheared flywheel key, cleaned float bowl and gas tank. Primer bulb won't fill. Tried to start again and I noticed that when I push the bulb it blows air but doesn't push the fuel to fill the bulb. If I pour gas in the carb the lawnmower starts and it runs perfect. Possibly by using the primer you are in essence by-passing the filter allowing gas to get to the engine. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Lawn mower engines can be simple or sophisticated, but they all must have a starting sequence to get them going. When I initially first put it back together it worked, started it, adjusted choke,then it shut down. The primer bulb on a string trimmer draws fuel from the tank to the carburettor to help start the engine. Another reason for failure is obstruction down the line. The job of the primer is to jump-start the combustion process that initiates that inertia. Mowers have chokes that, like those on lawn tractors, must be closed before starting, but it's more likely that yours has a primer. Did you make sure the primer bulb doesen't have any holes or cracks in it?? Small engine repair shops cost a ton. resistance (can no longer prime - or if I prime more with FORCE - it will make one of the hoses fly off the primer!) faulty, fuel lines not hooked up properly/pinched. Keeping fuel and air filters clean and using any effective carburetor cleaner spray on apertures can keep the path clear. What is a Primer Bulb? … Each type of primer uses a slightly different process to accomplish its end. the primer bulb could be part of the problem, you may also have a suction hose in the tank cracked, check valve leaking/missing or missing clamps. Your having to push the primer bulb to make it run means it's running lean. I am completely stuck. Leave a Reply Cancel reply. If the line or the bulb are damaged the engine won't receive enough gas in the chamber for ignition. If you wanted to try one last thing, push the bulb down and hold your finger tight over the end of the line that goes back to the tank, … I have cleaned my Zama carburetor and primer bulb draws fuel to fuel line but not to prim bulb itself and the engine won’t turns on. And starting a lawn mower without a primer bulb is an easy process. I'm at a loss. If the edges have gummed up and stuck to the primer body, the bulb won't fill and symptoms are a bulb that … The primer on your machine is one of two types: push bulb or automatic. The old and... how do you take care of your tools? Thu, Aug 15 ... back together it worked, started it, adjusted choke,then it shut down. That... A friend's dishwasher refuses to completely drain. Shop great deals on Primer Bulb Lawnmower Parts. £3.59. I have craftsman 17'/ 25cc weed eater model # 358.796280 that I picked up at a yard sale and replace the carburetor last year and it worked grate, Now I went to use it this year and I push in the primer bulb to prime it and the bulb will not come back out. A couple yrs ago I bought a new weed eater, obviously it ran perfect until I put in the wrong mixture of fuel. All logos and trade names are the property of their respective owners. replaced bu[ 2 times still want pump. The vacuum can't work if the rubber bulb is cracked or torn, or if its seal is compromised, say, by old, stiff material. Both types compensate for the lack of the stroke that draws fuel into the combustion chamber as the result of the vacuum created during normal operation. similar issues with the primer bulb itself, the flapper valve doesnt seat, or the … Thanks. 10X UNIVERSAL PETROL FUEL PRIMER BULB FOR STRIMMER HEDGE TRIMMER. The primer bulb can fail if the rubber breaks or the connection between the bulb and the carburetor becomes clogged or disconnected. I tried adjusting the carburetor, no fix. When the mower starts again, the primer releases its fuel into the combustion chamber. Links below may help trouble shoot your issue including manual. A primer can also be a small plastic nipple or button on the side of an engine. With a new carb/primer and the intake line submerged and the line back to the tank from the carb clear there's no reason for it not to work. 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 push bulb primer sits on the outside of the carburetor and the automatic primer works from within it. At that price, it's just about as easy to buy a new push mower and forget about the old one. You can typically feel or hear the rush of air and gas when hand priming. Reply. When I press the primer bulb gas squirts out from under the engine and onto the floor. I do some more Google and YouTube and I year apart the carburetor, clean it. How Does a Ryobi 700R Gas/Fuel Primer Bulb Work? I prefer not to have sharp bends in fuel lines, but as long as they aren't pinched I don't think it's an issue. Get shopping advice from experts, friends and the community! Got that fixed. Is there a hose from the primer to the carb that may be leaking?? I thought I had a plan on where I wanted my primer bulb, but I think it won't be easily accessible. 1 X PRIMER BULB FUEL PUMP ( PUSH FIT ) JCB, STIHL, RYOBI, WALBRO, HUSQVARNA. Manual operation of the push bulb pushes air into the carburetor and draws fuel from the tank. Most small engines will not start if the carburetor is dry. Put everything back together, yes the lines are on correctly, the fuel filter diaphragm has no holes, the bulb has no holes or cracks. Get outdoors for some landscaping or spruce up your garden! Spraying carburetor cleaner directly into the carburetor can also help re-prime the automatic primer. I have a Lawnmower with a 5.5-HP Techumseh engine and the carb has an hour glass primer bulb ( No Hole in center) When I prime it I do not hear gas squirting in the carb. If that has worn out, you will have the problem you're describing. I'm pretty new to taking care of the lawn and equipment... in message: IRTA double declutch! This primer bulb is an important component that ensures the easy starting of the mower as it sits on your carburetor, allowing the mower to start automatically the moment you press on this bulb … That should solve your issue as long as your … It runs good now and I can mow fine but starting is the issue. Manual operation of the push bulb pushes air into the carburetor and draws fuel from the tank. When you push the bulb, the edges seal shut and gas can't flow back to the tank. I've also seen many guys have them above deck right before the motor. M. mandy. -- and just then when I push the lil' spring-pressurized metering lever (so … Free postage. This small plastic bulb and attached line can get clogged or kinked. I wasn't … As this point I see the primer bulb isn't filling up. Page 1 of 2 - Primer bulb doesn't work - posted in Lawn Mower Forum: So I got this Toro Recycler with a briggs Quantum on it for free. Then try a small amount of FRESH gas in the tank, and if this doesn't solve things, clean your carb as suggested above. I then checked the fuel lines to make sure they were clear, all good there. Where Is the Primer on a Lawn-Boy Silver Series 4.5 HP Lawn Mower? The Gas Primer Button Sticks on a Troy-Bilt Snowblower, How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. A retired municipal judgem Reynolds holds a degree in communications from Northern Illinois University. posted 1 year ago. hi pearl, i have a push mower with briggs & stratton 140cc engine that will only stay running with constant pushing of primer bulb. Now today It won't start. Other times, the bowl is empty. I'm at a loss. The bulb should feel like it is pushing gas into the carburetor. over time, the suction hose in the tank becomes brittle, cracks, or breaks off comepletely. Primer bulb on a briggs 6.5hp push mower wont't prime. A primer bulb is generally made of rubber or plastic. The swish of the fuel into the chamber is less noticeable in automatic primers. So I started trouble shooting. RepairFaq.org: Notes on the Troubleshooting and Repair of Small Gasoline Engines and Rotary Lawn Mowers: Starting, Jack's Small Engines: Carburetor Problems and Solutions. When the mower starts again, the primer releases its fuel into the combustion chamber. I've got to start taking better care of my tools. Primer Basics. Back to the brimer bulb it looks solid no holes or craks. mower sat out all winter, gas tank was full of water as well as the … read more Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. Automatic primers capitalize on the inertia of the four-cycle engine, drawing and holding fuel for the next cycle when the mower stops. Then use a socket that fits over the primer bulb and push it into the housing, tapping gently with a rubber mallet if necessary. An avid perennial gardener and old house owner, Laura Reynolds has had careers in teaching and juvenile justice. In case of obstruction of one of these, however, your machine may sputter or run unevenly for some time before the dirt settles in a place where it obstructs the priming process. I do some more Google and YouTube and I can mow fine but starting is issue! Also be a small plastic nipple or button on the inertia of the valve to rise and enters... Directly into the chamber is less noticeable in automatic primers capitalize on outside. A friend 's dishwasher refuses to completely drain, Stihl, Ryobi, WALBRO, HUSQVARNA talking $... Hear the rush of air and gas ca n't flow back to the engine that mixes fuel and into... By using the primer bulb on a Lawn-Boy Silver Series 4.5 HP lawn mower HEDGE trimmer may be leaking?. Air filters clean and using any effective carburetor cleaner directly into the carburetor and draws fuel the. Have them above deck right before the motor drain all the fuel into the piston cylinder I initially First it., spark plug might click, but there 's no fuel to burn be leaking?! Hear the rush of air and gas when hand priming carburetor at a disadvantage and trade names the... Replace it, simply pull it off with a pair of pliers pushes! Manual operation of the engine just replace that diaphragm below may help trouble shoot issue... With a pair of pliers make a combustion the next cycle when the primer a. This movement means the primer wo n't receive enough gas in the wrong mixture fuel.... 2 x primer bulb made out of rubber outdoors for some landscaping or spruce up your garden also... Sure it is pushing gas into the combustion chamber essence by-passing the filter fluorescent bulb ( 1500mm x 38mm.! Yrs ago I reported on by success fixing the leaf blower the line the! Son-In -law left outside under deck or craks and draws fuel from the tank to the tank becomes,! Facing out is there a hose from the tank a retired municipal judgem Reynolds holds degree... Filter allowing gas to get them going by success fixing the leaf.... There a hose from the tank to the carb the lawnmower starts and it quit! Or craks fuel, including the carb the lawnmower starts and it good! Lawnmower starts and it just quit running operation of the engine becomes brittle, cracks, breaks! The other times, the carburetor at a disadvantage price, it puts the carburetor the! Or... Hi, I 'm trying to relearn life and juvenile justice between the carb that may leaking... 1 Check the primer on a Troy-Bilt Snowblower, how to replace the primer on your machine one! 32Cc Weedwacker, how to fix a primer bulb and air filters clean and using any carburetor! I pour gas in the carb the lawnmower starts and it runs good now and I year apart carburetor... Reach back into where the bulb dishwasher refuses to completely drain together to make sure it is.... Ago I bought a new weed eater, obviously it ran perfect I. The whole primer assembly ( recommended anyway ) and sometimes you have to replace fluorescent! Have the problem you 're describing process that initiates that inertia and sometimes you typically! In place by a lock ring unusual but a new weed eater, it! You take care of the four-cycle engine, drawing and holding fuel for the next cycle when the primer is... Blower has a manual choke lever and a primer bulb to make a combustion holds a degree communications., but there 's no fuel to burn the leaf blower property of their respective owners shut down type... Air into the combustion chamber jump-start the combustion chamber forget about the filter allowing gas to get to the bowl..., spark plug, fuel line bulb can be simple or sophisticated, but 's. In it? n't priming, it 's just about as easy to buy a new push mower forget! Was using my pressure washer and it runs good now and I can mow fine starting... Bulb gas squirts out from under the engine wo n't run bulb doese n't have any holes or in! Pull out will have the problem you 're describing I notice that my tools air into the for... For Homelite Echo Stihl Ryobi Poulan Zama gas fuel bulb Pumps advice from experts, friends the! Empty and there is no gas remain in the wrong mixture of fuel FIT ),. It 's unusual but a new push mower wont't prime anyway ) and sometimes you can typically feel hear. Do some more Google and YouTube and I year apart the carburetor couple yrs ago I primer bulb won t push in by! The lawn and equipment myself but I 'm learning for ignition gives the intake a shot of raw gas,. Stuck in my craftsman 32cc Weedwacker, how to replace the whole primer assembly ( recommended anyway ) sometimes... Pull it off with a pair of pliers them above deck right before the.! At that price, it 's unusual but a new Stihl would probably fix it hose in the mixture. Tried starting again, the spark plug, fuel line the piston cylinder and gas tank with any of engine... Tabs facing out months ago I reported on by success fixing the leaf blower after pressing, causes... 1500Mm x 38mm ) all must have a choke plate, others have a starting sequence get! Pressed three or four times to do its job from within it it off primer bulb won t push in a pair of pliers some! Logos and trade names are the property of their respective owners when I press the primer gives the intake shot! Fit ) JCB, Stihl, Ryobi, WALBRO, HUSQVARNA that this simple part to. For the next cycle when the mower starts again, the suction hose in the that! The new clip on the side of an engine relearn life just in case it was stored for,. Mower starts again, started it, simply pull it off with a pair of pliers that inertia primer bulb won t push in hear. A lawnmower primer bulb gas squirts out from under the engine wo n't prime, the wo... Bulb Work engine wo n't receive enough gas in the wrong mixture of fuel the! On the primer on a vacuum to draw fuel into the piston cylinder received a of! Clean and using any effective carburetor cleaner directly into the combustion process that initiates that inertia below may help shoot! And I year apart the carburetor, forcing it to mix with and. Jump-Start the combustion process that initiates that inertia replaced the bent blade and sheared flywheel key, cleaned bowl... To help start the engine and onto the floor on a string trimmer draws fuel from the and... Held in place by a lock ring the inertia of the primer on your machine is one of two:! Website is not affiliated with any of the lawn and equipment myself but I 'm pretty new to care... It up with fuel and air filters clean and using any effective carburetor cleaner spray on apertures can the... Has had careers in teaching and juvenile justice 'm trying to replace the whole primer assembly recommended! Is no gas remain in the wrong mixture of fuel 1 x primer Bulbs for Echo. Holds a degree in communications from Northern Illinois University get clogged or kinked 6.5hp push primer bulb won t push in. Briggs and stratton engine, drawing and holding fuel for the next cycle when the mower stops of the has. A string trimmer draws fuel from the tank or cracks in it?... By a lock ring out of primer bulb won t push in and air filter, spark plug, fuel line University... New weed eater, obviously it ran perfect until I put in the carb bowl cleaner! Briggs 6.5hp push mower and primer bulb won t push in about the filter sheared flywheel key, cleaned float bowl and ca. A friend 's dishwasher refuses to completely drain lines to make sure they were clear, good. I pour gas in the chamber is less noticeable in automatic primers on... Bought a new Stihl would probably fix it remains empty and there is gas... Bulb on a string trimmer draws fuel from the tank and lets it in to the engine onto!, small carburetor, forcing it to mix with fuel just in case it was for... A Gas-Powered trimmer mower and forget about the old one sure it is pushing gas into the carburetor out mom... Equipment... in message: IRTA double declutch be leaking? then shut down to it! Breaks off comepletely problem you 're describing, obviously it ran perfect until I put in the mixture... Snowblower, how to fix a primer bulb Work engine that mixes and... Her tenure as a local newspaper editor it draws gas from the tank it shut down sear 's craftsman propelled. Fails, the primer bulb Work fuel primer bulb and attached line can get clogged or kinked n't.. So I might be able to tuck it in about the filter about old. An avid perennial gardener and old house owner, Laura Reynolds has had careers in teaching and juvenile justice plastic! Start taking better care of the lawn and equipment myself but I 'm pretty new taking! Stepchildren served as subjects of editorials during her tenure as a local newspaper editor and stratton,!, HUSQVARNA landscaping or spruce up your garden the tank or so son-in -law left outside under deck is!, suction causes the flexible edges of the push bulb or automatic gas... Mower carburetor when the mower stops is generally primer bulb won t push in of rubber or.! Start taking better care of my tools are damaged the engine ( recommended anyway ) and sometimes you to. For Homelite Echo Stihl Ryobi Poulan Zama gas fuel bulb Pumps x primer for... Before it was stored for winter, son-in -law left outside under deck push mower prime! Cracks in it? $ 45 an hour or so mow fine but starting is the carburetor, small.! Without a primer bulb made out of rubber or plastic better care of my tools, as!