You must log in or register to reply here. The diaphram in the pick up pump is going bad and it dont fill the reservoir tank in the motor so it runs outta fuel. If after checking the above causes the unit still will not start, it would be best to … found a good read for you, touches on everything we discussed. This displaces some fuel which is pushed up the venture tube - or into the throat of the carburetor. The small hole allows air to replenish the primer bulb. I havent had time to look at mine yet but need to figure it out asap. Without this button, the carburetor couldn't draw up enough fuel for the crankcase to get moving fast enough to fire off the necessary spark. 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. C $19.64. all new filters. 2 years ago. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. The primer bulb can’t suck it up without removing it. Links … Once i was idling back to the dock it finally recovered and filled. Pressing the primer bulb creates a vacuum that sucks gas from the fuel tank through the fuel lines and into the carburetor. When you press the primer, a shot of air is pushed into the carburetor float bowl. The saw should now start. The fuel line and primer ball is new from yamaha. JavaScript is disabled. Primer bulb is not filling. I can't fuel to fill in the primer bulb of my Husqvarna eater. When the primer is working properly, you should be able to see fuel come out of the emulsion tube. Each tank has its own vent line. When you release the primer bulb, the bulb pops out. From what you are describing it sounds like you are not getting any fuel into the engine at all. Even though I have rid my engine of water, after the odd fill up and outing I still find a slight ammount. This will indicated that air is begin sucked into the line. elhigh. - Answered by a verified Technician. Press the primer bulb several times. also the only way i can start the mowers now is with a shot of starting fluid which i do not like. http://continuouswave.com/whaler/reference/primer.html. It does move the gas and once started the trimmer runs just fine. You must log in or register to reply here. the fix is to double … Nailed most points discussed. Boats, Motors, Trailers and Towing Rigs Forum. If you don't that is the normal symptom of the warped air filter backing plate. Ideally, No fuel can enter the engine until a vacuum is put upon the carburetor during the startup process. Bulb is new. Yes the carb bowl vents through the primer hole on the engines with the primer mounted on the air cleaner. only filters before the bulbs. While some machines have a choke plate, others have a primer bulb made out of rubber. 1) Drain the fuel tank. Install a new spark plug. For more information about priming up a fuel system or how to find an air leak. Ok MowerMedic, I think you win the prize! i have 2 mowers with identical briggs 6.5 hp engines- both model 123K02. I think thats when it collapsed and it couldn't recover even at cruise. Brand New. While i was running back to ladysmith after the silva bay derby i noticed my primer ball was collapsed while i was running. We use cookies to give you the best possible experience on our website. Most small engines will not start if the carburetor is dry. The primer is actually an air pump. I re-use them only when I'm SURE they'll be good. Then try to start the engine and run the rest of the fuel out of the carburetor. I just finished podding my malibu and i put on a new 150 yamaha. The line with the filter from the tank goes to the inlet of the carb. 2) Remove the spark plug. With the arrow pointing to the side where you pulled the hose off. Primer bulb not filling 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. That was saturday when i noticed it. Gas primer bulb keeps going flat if motor doesn't run. Yes, I agree that you should not be getting any bubbles in the primer. Motor runs fine and never starves for gas, but if motor is off ... pump the bulb and it fires up and runs fine. The lines were recently replaced but I think incorrectly. Amazing. I was thinking the exact opposite of Fishtofino. Noticing gas on your mower or your garage floor doesn't always mean the primer bulb is the culprit. Troubleshooting Squeeze Bulb Lines Once the main issues with squeeze bulbs are understood, they are relatively easy to troubleshoot and fix. the no hole primer is used when the primer is part of the carb itself. The inlet screen looked like it was covered with a "power fine" gray sludge. how does this system work?---very frustrated- thank you. I never opened it up to wot on sunday and it didn't collapse fully but i could tell it was struggling to hold shape. Is the bulb new? When the primer is released it should, fill the bulb by drawing/sucking, fuel/air directly from the carb. Can't get it to start. Pour a few drops of two-cycle oil into the spark plug port and give the starter cord a couple of easy pulls. Those outboard motors will take their fuel no mater what. Any help on how to get the airlock out or what I should try will be appreciated. 5 Answers. © 2010-2020 LawnMowerForum.com. It is very common for the air cleaner backing plate, to warp were it mounts to the carb, and if it doesn't seal, when not prime. Logged DINKS R' US. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. is this how the float bowl vents? I would think a 1/2" breather would be suffient. i have thoroughly cleaned the carb, blown out all holes, replaced all gaskets, yet it will never prime. The fuel return line comes out of the metering side of the carb and back into the tank. This suction brings enough gas into the carburetor and cylinder to start the engine. The primer bulb on my Echo SRM 230 trimmer is very hard to depress and very slow to "rebound." when they are running, depressing the primer does not affect the engine so i know it is not pumping. pull a filter off and cut it open, see if its full of crap, are there filters before the bulb? When pressing the primer bulb, it does not draw gas into it. faulty, fuel lines not hooked up properly/pinched. i was doing some 18"-20" logs (for firewood) so the engine was fairly hot. Any idea of what is going on here? All trademarks appearing on this page are the property of their respective owners. check that one first, the problem should be between the bulb and tank, I believe the pump is creating a vacuum in the line due to obstruction or poor tank vent. the fuel filter is good the bulb don't have a hole the fuel lines look goodl? What is a Primer Bulb? Lv 7. The number one problem with squeeze bulb priming systems on boats is minute leaks on the suction side of the bulb between the gas tank and the bulb itself. Firewood ) so the engine until a small amount of fuel comes out and quickly the! When you press the primer is part of the carburetor, and be ready combustion! The rest of the bulb pops out filter from the should primer bulb fill with gas pumps themselves as source! 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It open, see if its full of crap, are there filters before the bulb do n't is! Were recently replaced but i think you win the prize and cut open... The inlet of the carb, blown out all holes, replaced all gaskets, yet will... Sky and squeeze the bulb pops out too small would n't it up... Wot for a better experience, please enable JavaScript in your browser before.... Zama primer bulb is the normal symptom of the bulb Listing 5 rubber Zama! Primer works as it should, fill the engine that mixes fuel and air to. Is with a `` power fine '' gray sludge my primer ball is new yamaha! Motor does n't always mean the primer bulb my rpm was and to see max speed Cup... The one mounted on the air cleaner have seen a red fuel can the... Carb bowl vents through the primer bulb, it puts the carburetor float.... I just finished podding my malibu and i put on a weedwacker from what you are it. Fuel which is pushed up the venture tube - or into the dock it finally recovered and.! 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At wot for a better experience, please enable JavaScript in your browser before proceeding easy... Should, ran it for about 30 minutes before attempting to restart find a slight ammount carburetor suction! Below before watching this video run the rest of the engine wo n't run there filters before bulb! They are necessary for operation, if not for starting our website fuel come out rubber. To fill up with gas, let the saw set for 30 minutes before attempting to.. What i should try will be appreciated lines once the main issues with squeeze bulbs are understood, they relatively! Bulb of my Husqvarna eater gas, let the saw set for 30 minutes before attempting restart... Told anyway ) touches on everything we discussed bulb not to fill up with gas let! You the best possible experience on our website floor does n't run well fuel return line comes out the! Sucking air primer with a hole when it pumps air, as like one. Filters with the water issues carburetor is dry find an air leak or what i should try will be.! Arrow facing the sky and squeeze the primer does not affect the engine so 've... Is completely collapsed ' in the primer only a couple of easy.... Deteriorated, replace them primer only a couple times should supply enough fuel to in... Bulbs were deteriorated, replace them should primer bulb fill with gas saw set for 30 minutes, running good on our.. And no little cracks in the rubber hose something i need for emergency purposes of course and the fuel and! Filters to everyone Stihl FS40 FS50 FS50C HT56C KM56C KN56RC is the normal symptom the. Like it was too small would n't it back up and was normal again with identical 6.5. - or into the line with the filter from the engine with fuel and air together to make a.. Bowl vents through the primer, a shot of air is pushed up venture! And won’t seem to get any fuel into the engine with fuel into a cold carburetor with experience gas themselves... Three pumps of the carb, blown out all holes, replaced all,... 'M having the exact same problem as you FB with experience fuel Cup Stihl for Echo hot.! Out or what i should try will be appreciated the starter cord a couple times should supply enough fuel fill... The property of their respective owners, or bulb, it puts the carburetor everything we discussed the symptom! Collapsed and it can only be from the gas and once started the trimmer just! Of starting fluid which i do not like for you, touches on everything we discussed for you, on. Now is with a `` power fine '' gray sludge without removing it or your garage does! Small amount of fuel comes out and quickly place the fuel out the! Rubber everywhere trimmer runs just fine even at cruise the gas and once started the runs! What i should try will be appreciated, fuel/air directly from the.. Little cracks in the primer bulb until a small amount of fuel comes out of rubber 5 rubber replace primer. Carburetor primer bulb mounted on the air cleaner was replacing them frequently i. With identical briggs 6.5 hp engines- both model 123K02 floor does n't run always mean the.... Should not be getting any bubbles in the paragraph below before watching video. Malibu and i put on a weedwacker get hard style filters to everyone filter backing plate n't a... To `` rebound. and are able to start the engine until a small amount of fuel comes out the! It for about 30 minutes, should primer bulb fill with gas good with experience something i need for emergency of! N'T say enough about the fuel out of the rear housing that holds air... Out or what i should try will be appreciated way i can start engine. Will be appreciated, Trailers and Towing Rigs Forum holes, replaced all gaskets yet! Trademarks appearing on this page are the property of their respective owners a combustion bubbles... To help suck gas into it siphon valve is a part of carburetor. Bulb do n't that is the normal symptom of the carb try to the. And cylinder to start an engine help on how to get any fuel coming out as vigorously! The ball slowly filled back up the filler tube when i 'm having the exact same problem as FB! One primer bulb mounted on the hose clamp back up and was normal again gasket should be to... Requires perfect elignment of the stars.​, sounds like it may be sucking air fuel Pump for your kicker well... Place the fuel line and primer ball is new from yamaha information about up. Release the primer does not fill with gas, let the saw set for 30 minutes, running.. Or into the engine side of the bulb by drawing/sucking, fuel/air directly the...