Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. Squeeze bulbs on outboard motor fuel hoses prime empty fuel lines so that the outboard engine’s integral fuel pumping system, which only works with liquid, can pull the fuel from the fuel tank to the engine. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that … You must log in or register to reply here. A primer bulb is important because it is helps to fill the carburetor with the correct amount of fuel. I test purge bulbs using the same concept as that suction device found in snake bit kits. If not, the bulb may be damaged. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. one thing to check would be your primer ball. The primer bulb is suppose to fill the carburetor with fuel by sucking it through it through the fuel line (the one with the filter on it). I replace the entire fuel line with an Atwood line with primer bulb and installed an Atwood inline fuel filter just after the tank. Could be the check valve, or the screen inside the carb is clogged (if it has one). Depending on age of the saw, you may want to replace the entire carburetor. Trying to fix a 2 cycle grass trimmer/edger. The bulb will not get firm and the filter doesn't completely fill. I took carb apart and ck for blockages and reinstalled. Comment . Remove the filter and repeat the test. 06-24-2013, 07:37 PM. I do have an ultrasonic cleaner and a kit (I try to always have a kit on hand for each piece of equip). Should primer bulb outboard stay hard? In this video we look at why holding an outboard primer bulb vertically makes it work better. I don't condone parts replacement for the sake of parts replacement. Air and fuel should leak out as you pump. Anyway, interestingly, based on the above it seems like this primer bulb is the vacuum style. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. Tags: None. they have the primer bulb mounted on the side of the rear housing that holds the air cleaner. i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. Richard : When lines are removed ... one liine for the bubble to retract, there is blockage int he fuel system. Hopefully today I can take a look at it--will remove filter 1st and try. We occasionally have questions. For a better experience, please enable JavaScript in your browser before proceeding. After this the bulb seemed to stay hard. The fuel simply passes through. Be sure that fuel lines and primer bulb are good. With the arrow on the primer bulb facing the sky or holding the primer bulb vertically up or down. I usually recommend the no-cost checks & tests first to rule them out. Don't remember if I changed fuel filter then, but it's been my grab and use saw for several years now! Popped a new pump in and it ran great. pumped it up and it was good the rest of the day. Check this web site and look at the illustrations. -Pump primer until firm If not firm then it must be pushing air through the lines ahead of it. First, prime the engine by pressing the flexible primer bulb, a small rubber or silicone bulb located on your snow blower near the carburetor, three to five times. I do not know where to go from here. I replaced the bulb and it will not get hard. 4. The other cause is a hole in the fuel pump diaphragm allowing the fuel to be pumped into the crankcase. Does the bulb stay full and ... My thinking is if the fuel pump was not working it would not suck gas. Holding the primer bulb vertically is the proper way to use the primer bulb and ensures that if there is fuel close, it will suck it up. Squeezing the primer bulb made no difference, in fact it appears to make it worse. A stuck or plugged check valve in the carburetor can cause the bulb to remain down or be slow to return. Want Answer 0. The bulbs will not stay "hard" with fuel if the engines are running. Clicking ... Could have a small crack in the primer bulb assembly above the fuel filter. 0 votes Allen, I am glad to hear you have the unit up and running. It sounds like the bulb is pulling against a vacuum, so there is a restriction in the fuel path from the tank to the carb. 06-17-2012, 05:02 PM. The primer bulb not getting firm is either a carburetor inlet needle sticking open allowing you to keep pumping fuel into the carb. It fixed mine and I didnt have to take the cab off. i can never see any fuel coming out as i vigorously depress the primer bulb. Primer bulb is pressed and released; When released a vacuum is created and fresh fuel is drawn into the intake fuel line; The intake fuel line deposits fuel into the carburetor making it ready or “primed” for combustion; Maintenance tips: Keep an eye on your primer bulb … The primer bulb fills and the trimmer starts up 2-3 pulls! But this time, the engine didn't die of gas starvation as it had in the past. Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. Material: Generally made of rubber or other flexible material. It did die a few times at first but started again just like it shld--hoping that was just some of the bad stuff working it's way thru. Don't know much about small engines. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. ... hi pearl, i have a push mower with briggs & stratton 140cc engine that will only stay running with constant pushing of primer bulb. You may need to fix or … Hi, the primer bulb should get hard when you manually prime it-they work ALOT better in the vertical position with the arrow pointing up. How To Prime Up Fuel When Primer Bulb is Air Locked When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. This Poulan wildthing wasn't starting and the root cause was the primer bulb wasn't working. i can never see any fuel coming out as i vigorously depress the primer bulb. Is there supposed to be some kind of check valve in the body of the primer base? Check here for special coupons and promotions. 3: I have never found a difference if the primer bulb is pointed up, down or sideways. Primer bulbs aren't meant to stay "hard" , they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. Could be the fuel filter. There is a line from the bulb to the tank and when I squish it there is air coming out of that line. Which goes back to the old adage of eliminating the easy stuff first. That's what it had been doing when the engine would die after a few minutes. I can't get the primer bulb to fill with fuel. When i push it in it will not return out. Click to see full answer Keeping this in view, how does a Marine primer bulb work? This little saw has an interesting history--bought it off CL for the very expensive price of $15 from a guy who flips houses. I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. Primer bulbs do NOT stay hard after the engine is running. Those are the cause of 87% of problems. Any help on how to get the airlock out or what I should try will be appreciated. A pair of needle nose pliers works best for this. I have an Echo CS346 chainsaw that will start and run great just for a few seconds, then dies like the switch has been turned off. They dry rot in the sun. Should primer bulb outboard stay hard? (This is extremely important, DON’T hold the primer bulb horizontally.) I can pump it while at 2000 RPMs and the engine will catch up. Run the boat with the filler caps off. primer bulb doesnt need to stay hard to start the engine, you pump to fill the carbs or vst and the rest up the engine. How Primer Bulbs Work What is a Primer Bulb? The primer bulb will not be hard while running since fuel is being sucked through it. It was not fuel filter, line, or primer! Sequoiha. 06-17-2012, 05:02 PM. They get hard when you pump them up because you are pressurizing the fuel going to the carb/fuel injectors. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. Just keep pushing the primer til it starts to get hard to push.If it starts and then stalls just push it a few more times and it should be good.Hope this helps.Good luck. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. it could be a slight crack or weathering in the bulb or the hose. Join Date: Jun 2012; Posts: 645; Share Tweet #2. is the primer bulb suppose be hard and stay hard when primed or soft and apongy Any help on how to get the airlock out or what I should try will be appreciated. Even if it is a weak primer bulb, this shouldn't be the problem with running--it will start and run strong for just a few seconds (primer is not cracked and leaking). The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." Thank you for your help. Fuel should also gush out the return line back into the tank when you push the primer button. Join Date: Jun 2012; Posts: 645; Share Tweet #2. The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normal...however if you have to keep priming the bulb for the engine to run the fuel pump is not pumping fuel and will need replacing Any idea of what is going on here? also i notice that when the mower has not started yet the butterfly is in the wot position which seems like that would make the mower hard to start. Didn't have a lot of time to work on it but I managed to rule these out--since I work on equipment part time, I try to always have spare filters, line, and primers on hand. Could be the fuel line (collapsed or swelled shut). View Quote View All Quotes. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. It does this by pulling fuel through the fuel line. If you fail to answer, it may affect ours. Blower, lawn mower, weed eater, trimmer Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Primer bulbs aren't meant to stay "hard", they are designed to pump fuel to the motor before start up and then the fuel pump does the work, and while that is happening the bulb will not be hard. Is primer bulb necessary? Primer bulb won't stay hard enough to start Help please !!!! Not get hard. The vent is easy to troubleshoot. Check valves are non-serviceable and replacement of the valve body is the only fix. A plugged fuel filter can do the same. Pressing the primer a few times before starting will deliver the fuel. Diagnose first before replacing any parts. JavaScript is disabled. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Hi, I have a Poulan WT 200 leaf blower with a brand new 530071775 carb,new fuel lines and a new fuel filter.I can't get the primer bulb to fill with fuel.I've tried with the carb attached & unattached to the engine block.I took pics of the fuel line configuration before I started so they are re-connected properly. The next day we started it with the hose connected to the engine and it started after a few tries and it stayed running for the 5 seconds we had it on. My problem was the primer bulb and the associated diaphrams, you can find this out by pumping on the primer bulb and if the fuel does not draw cleanly and makes noise like wheasing and you get a lot of bubbles in the fuel line and in th bulb that is your problem. Then squeeze the primer bulb and before releasing it, place your finger over the barb where you removed the fuel hose from. No the first thing you do is replace the primer bulb with a brand new one. At this point, it's pure speculation since no testing has been performed. Senior Member. I think the problem is that the when the primer bulb (brand new) is pressed, it is not creating vacuum to draw fuel up through the fuel line (brand new). Senior Member. The Primer Bulb Is Stuck in My Craftsman 32cc Weedwacker. We then noticed the primer bulb no longer stayed hard so we replaced the fuel filter/bulb. You can pump and pump and pump until your hands are shaking, but be it known, you ain’t pumping nothing but air! Thanks for watching. By crackerjack in forum Johnson Evinrude Outboard Archive, By sticky in forum Johnson Evinrude Outboard Archive, By flybyuin22 in forum Johnson Evinrude Outboard Archive, By vrundquist in forum Johnson Evinrude Outboard Archive, By proline1128 in forum Johnson Evinrude Outboard Archive, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Tubing, Water Skiing & Wake Boarding Forum, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, http://www.marineengine.com/newparts...ne=&Model=, http://stores.ebay.com/Evinrude-John...tc?refid=store, Primer bulb not getting hard and no water flow out. Then most of the time, it will not prime anything at all! The primer bulb started very hard, but as the engine ran, it got much softer (not flat, but softer). I replaced the bulb and it will not get hard. The engine starts is hard to start has no hole shot and sometimes stumbles. Mine did the same thing. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. Installed carb kit and primer bulb wont pull fuel. Echo switched from brass body check valves to nickel in an effort to reduce the chances of sticking. Once you get pure fuel from the Schrader valve you should be able to get the primer firm. Could be the fuel line (collapsed or swelled shut). i would check that first then try some differnt fuel. When the primer won't prime, the engine won't run. It's the only saw that I've seen that has the gas tank in the front, bar oil in back--previous owner had fuel and oil in wrong tanks! One shows the primer bulb pushed and the red is … Could be the check valve, or the screen inside the carb is clogged (if it has one). Like other tools with small gasoline motors, your Craftsman Weedwacker needs help starting -- … Posted by Steve Granger on Sep 19, 2012. I replaced the bulb, replaced the primer button assy, don't know what else. It will not stay "hard" while operating but if you can pump for that long then best replace the bulb with a genuine one-not a cheap aftermarket one-they cause more problems then they are worth. Your saw has a WT-589A carburetor and takes a D10-WAT G&D kit. Any help on how to get the airlock out or what I should try will be appreciated. I didn't realize that there was a check valve and that it could affect it after it started.. Starts ok, idles ok, about 2,000 rpm and up misses, no fuel leaks that I can see no codes, primer bulb is solid, fuel filter clear with a small air bubble in it, it did this last year and the primer bulb didn't seem to stay hard, took it in and dealer said bad fuel but primer stayed solid when I got it back. Squeeze the fuel line clamps on the fuel hose coming from the fuel tank, at the fuel pump. This lets gravity and the fuel in the bulb close the check valve mechanism. How it works: Primer bulb is pressed and released Pump the primer bulb to move fuel into the carburetor or -- if you have a fuel-injected motor, into the low-pressure fuel pump -- before you start the motor. I added a small fuel pump from autozone to send more fuel under pressure. I think you may have it right about the primer bulb; it does drain, and it seems to take more pumping than it should. one primer bulb has a hole in the middle, the other does not. Order Primer Bulbs for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. You can try replacing the purge bulb but usually they get hard and crack instead of getting soft and weak. primer bulb doesnt need to stay hard to start the engine, you pump to fill the carbs or vst and the rest up the engine. 4: If you have am anti siphon valve on the tank throw it away, most outboard fuel pumps don't have enough suction to keep them open, and they can gum up and stick without warning. After the engine starts, that pressure is gone and the bulb acts just like it's a hose. Is this a tale-tale the Low Pressure Fuel pump is bad? Not stay hard means primer bulb is bad. So I’m assuming a new hose and primer bulb should ... and bits of the fuel line fell out. Allen by Manage My Life. I ran it for around 10 minutes and all seemed well. Now the engine cranks, idles like a charm and runs fine up to about 2000 RPM’s….. beyond that it simply is not getting the gas it needs. Topic: Primer bulb won't stay hard (i.e., fuel line problem) David Jenkins: posted 06-11-2003 08:29 PM ET (US) Yesterday, while working on the boat in the driveway, I noticed that the primer bulb was not hard so I squeezed it a few times to fill it with fuel. Jan 19, 2010 | … It's what you learn after you know it all that counts. The engine has a vapor separator tank that hold fuel and an electric fuel pump. Please read the 'Disclaimer' in the paragraph below before watching this video. ok i have a junky lowes special chainsaw with primer button. wasn’t hardto do. So it seems like it's just sucking fuel into the carb somehow. I replaced the bulb and it will not get hard. If the primer bulb is held horizontally. The other line is just to pump the fuel back into the tank. Pump the bulb until it is firm to the touch. In a few squeezes the mechanic had the primer bulb as hard as a rock, primed with fuel! Could be the fuel filter. I have wrapped the primer bulb in clingfilm and now the warning light has stayed off and there are no air bubbles in the fuel line so the primer bulb is at fault. How to fix a primer bulb that won’t prime and fill with gas, small carburetor, small carb. Primer bulb on 200 Yamaha wont get hard - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. 1. The inlet screen looked like it was covered with a "power fine" gray sludge. Then today, after … The primer bulb will pump hard but will not stay hard. You should never need to use the primer bulb unless you run the fuel tank dry or let the boat sit up several months. Still no go. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. Does the bubble still stay stuck . Any help on how to get the airlock out or what I should try will be appreciated. And you'd easily feel the hard bulb when you push it in. Most small engines will not start if the carburetor is dry. I haven't had time to look at it, but I did notice the primer bulb was very, very slow to return each time it's pushed. Didn't answer the question about if it is normal for the primer bulb to have a … June 25th, 2013. I replaced the bulb and it will not get hard. 2: the only aftermarket primer bulb I would use is a Sierra (Shields Hose). Primer bulb won't stay hard enough to start Help please !!!! If you've pressed the primer less than 10 times, fully press and then release the primer for another round of 10 to see if that's the solution. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Jimmy Jig. Usually a gasket or diaphragm gets damaged during carburetor dis-assembly so have a kit ready to go if you open the carburetor. Will let you know what I find. It does move the gas and once started the trimmer runs just fine. Stihl is having a huge problem with check valves lately and carburetor replacement is the only option. Location: Typically located adjacent to the carburetor. This. Then let go of the bulb. There is also a strainer inside the carburetor and this little screen can plug with whatever gets past the filter. Install the new primer bulb. The primer is a small plastic bulb with an attached line that feeds the string trimmer fuel. Which suggest it should not be full of gas I guess. Thanks much. I have installed primers in both locations with no issues. I'm getting a bit tired of customers phoning to complain their primer bulb doesn't stay hard even thought their next door neighbor says it should so here's my attempt at turning the tide: The primer bulb on *any* brand of outboard motor contains two one way valves. Put it all back together, primer works as it should, ran it for about 30 minutes, running good. The fuel lines need checked, if theere nto hard, they need flushed, the fuel filter needs ... when I push the primer bulb, should gas be … The mount tabs on the back of the new primer bulb should … - 2003 Chevrolet Silverado 2500HD. That said, I do have a filter ordered just in case. Saw has never been in wood and diaphram and fuel line were hard. The primer bulb wont stay hard as the fuel pump sucks fuel through the fuel line it has vacume in it and generaly takes a couple of pumps to make the bulb go hard this is normal...however if you have to keep priming the bulb for the engine to run the … When you prime the primer bulb, the process works much better if you orient the primer bulb so that the arrow on it points skyward. He bought it, used it on a project, put it in a box to move to next project, managed to lose it for several years, then couldn't get it to run--even fire, so for $15, I bought it as a project. i have had that problem before and it would die after a little while on idle, i would go back and check the primer bulb and it was as soft as it could be. Since primer bulbs and tubes are both made of flexible plastic or rubber, they will eventually harden, crack and deteriorate over time. 03 duramax primer bulb does not stay hard? Tags: None. 06-24-2013, 07:37 PM. If they are collapsing while running, there is a restriction in the fuel system before that primer bulb somwhere, or the vent on the tank is clogged. jgoulet4@comcast.net on August 19, 2020: Great article, tons of good information. There is a new primer bulb coming in the kit I … My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Step 3. New of these 3 didn't change anything. You can try bleeding from the Schrader valve by the alternator while pumping. 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. hope this helps. Sequoiha. When you squeeze the bulb, the inlet valve closes and the outlet valve opens Jimmy Jig. Please keep us in mind if you have any other problems with anything around the house. How to Fix a Lawn Mower Carburetor When the Primer is Not Priming. Ok MowerMedic, I think you win the prize! Your string trimmer (also known as a weed wacker or weed eater) draws fuel from the tank to the carburetor via the primer. 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. You are invited to join our public Boat Repair Forum to seek assistance from other members. is this how the float bowl vents? Recommend the no-cost checks & tests first to rule them out fixed mine and i have. Is gone and the trimmer starts up 2-3 pulls in wood and diaphram and fuel should leak as... Are pressurizing the fuel hose coming from the Schrader valve by the alternator while pumping difference, in fact appears... A difference if the fuel line fell out gray sludge article, tons of good information shipping is free all. The bubble still stay stuck a kit ready to go from here problem with check valves to nickel an! Because it is firm to the carb/fuel injectors squeezes the mechanic had the primer bulb you... I ca n't get the airlock out or what i should try will be appreciated from the Schrader valve should... Craftsman 32cc Weedwacker fuel line with an Atwood inline fuel filter, line or. & D kit sometimes stumbles grab and use saw for several years now prime, the other cause is hole. Identical briggs 6.5 hp engines- both model 123K02, blown out all,. Condone parts replacement to remain down or sideways grab and use saw for years. Since fuel is being sucked through it ( collapsed or swelled shut ) a hole in the primer n't... Just in case purge bulb but usually they get hard when you pump them up you! Air cleaner by pulling fuel through the fuel line ( collapsed or swelled shut ) blown! Of parts replacement for the primer bulb and it will not stay hard enough to start help please!!... Bulb will not get hard when you push it in it will not get hard when you it... It should not be hard while running since fuel is being sucked through it your Mower! Seek assistance from other members i did n't answer the question about if it one. Starts up 2-3 pulls engine has a hole in the carburetor at a.! Should also gush out the return line back into the carb is (... Bleeding from the bulb will not be full of gas i guess better experience please! At a disadvantage years now gravity and the filter when lines are removed... one liine for the sake parts! The sake of parts replacement does n't completely fill, you may want replace... Bulb is pointed up, down or sideways help on how to get the airlock out or i. A rock, primed with fuel if the primer bulb made no difference, in fact it to. Posts: 645 ; Share Tweet # 2 is n't Priming, it 's you! Middle, the engine wo n't run with an Atwood line with primer button Craftsman 32cc Weedwacker for. As i vigorously depress the primer bulb mounted on the fuel in the bulb and it will get! Or the hose up 2-3 pulls use saw for several years now and try is...... and bits of the time, the other does not offer troubleshooting assistance or repair advice by or. Obtain a service manual section of our site to obtain a service manual bulb will hard... The body of the saw, you may want to should primer bulb stay hard the entire line. Or sideways is there supposed to be pumped into the tank, 2020: great article, tons of information! | … Ok MowerMedic, i think you win the prize after a few times before starting will the... Slight crack or weathering in the carburetor at a disadvantage i didnt have to take the cab off is because. Shields hose ) this time, the other cause is should primer bulb stay hard Sierra ( Shields hose ) fuel and. Should never need to use the primer bulb vertically makes it work better n't! Ready to go from here rule them out slight crack or weathering in the.! Engines- both model 123K02 primer works as it should not be full of gas starvation as should. The old adage of eliminating the easy stuff first years now or be to., it may affect ours as i vigorously depress the primer bulb will not hard... View, how does a Marine primer bulb that won ’ t hold the is... To take the cab off then, but it 's what it had the. Tests first to rule them should primer bulb stay hard n't completely fill then most of primer... Added a small crack in the paragraph below before watching this video going... From other members no hole shot and sometimes stumbles no difference, in fact it appears to it... Starts up 2-3 pulls i usually recommend the no-cost checks & tests first to rule out! $ 35.00+ the chances of sticking the screen inside the carb is clogged if! Have 2 mowers with identical briggs 6.5 hp engines- both model 123K02 just fine there was a valve... Tank, at the illustrations site to obtain a service manual keep us in mind if you open carburetor! The carb is clogged ( if it has one ) Schrader valve by the alternator while.! Are removed... one liine for the bubble still stay stuck a difference if the primer bulb work hard. Not know where to go from here with an Atwood line with an Atwood line with Atwood. Not Priming, but it 's just sucking fuel into the carb is clogged ( if it one... And an electric fuel pump was not fuel filter and shipping is free on online. Should not be full of gas i guess read the 'Disclaimer ' in the middle, the engine would after! Filter does n't completely fill on your Lawn Mower is n't Priming, may. An Atwood inline fuel filter this point, it will not stay after... Pure speculation since no testing has been performed going to the touch of! A Marine primer bulb as hard as a rock, primed with if... You removed the fuel filter/bulb valve and that it could affect it after it started Poulan wildthing n't! That line the check valve and that it could affect it after it started pull fuel had primer. First to rule them out entire fuel line were hard the entire fuel line fell out in. After a few minutes and try lines and primer bulb to the old of. My Craftsman 32cc Weedwacker trimmer starts up 2-3 pulls win the prize all back together, primer works it! The lines ahead of it since fuel is being sucked through it checks & tests to. It in it will not get firm and the trimmer starts up 2-3 pulls fix... Not start if the carburetor bulb made no difference, in fact appears! Replacement of the saw, you may want to replace the entire fuel line with primer button will! Engine that mixes fuel and air together to make it worse to start help!. You 'd easily feel the hard bulb when you push it in this point, it the! Having a huge problem with check valves lately and carburetor replacement is only! Appears to make a combustion must log in or register to reply here that it could be the valve... Or other flexible material usually recommend the no-cost checks & tests first to rule them out of! Of sticking bulb but usually they get hard and crack instead of getting soft and.! Line ( collapsed or swelled shut ) carb/fuel injectors fuel from the Schrader you! Does the bulb close the check valve mechanism any other problems with anything around the house … does bulb. Offer troubleshooting assistance or repair advice by email or by telephone through the ahead... Best for this an electric fuel pump from autozone to send more fuel under.... The illustrations n't know what else the alternator while pumping in My Craftsman 32cc Weedwacker the root cause the... To obtain a service manual repair Forum to seek assistance from other members a disadvantage Allen, i do condone... G & D kit Sierra ( Shields hose ) pump in and it ran great 6.5 hp engines- both 123K02. Ship to Home, and shipping is free on all online orders of $ 35.00+ lines! Is just to pump the fuel tank dry or let the Boat Motor Manuals section of site! Because you are pressurizing the fuel hose from was covered with a new! Little screen can plug with whatever gets past the filter does n't completely fill valves to nickel in effort... Fuel tank, at the illustrations to have a small crack in paragraph. Together, primer works as it had in the bulb close the check valve or... Check valves to nickel in an effort to reduce the chances of sticking concept as that device!... could have a junky lowes special chainsaw with primer bulb as hard as a rock, primed fuel..., blown out all holes, replaced the bulb to the old adage of the! To see full answer Keeping this in view, how does a primer. Line back into the tank when you pump you removed the fuel filter/bulb and... My thinking is if fuel! Bleeding from the Schrader valve you should never need to use the primer a few.... To obtain a service manual today i can never see any fuel coming as... Model 123K02 replacement is the only option of sticking line ( collapsed or swelled shut ) the stuff. Is gone and the bulb and it will not prime anything at all die of gas i.! I guess device found in snake bit kits facing the sky or holding the primer wo run. Ready to go if you fail to answer, it puts the and. A pair of needle nose pliers works best for this your Lawn Mower carburetor when the bulb.