Slide the purge bulb assembly out of the engine housing. Does anyone know where you can buy a "generic" primer bulb for something like this? https://www.homedepot.com/p/Mechanic-in-a-Bottle-4-oz-Synthetic-Fuel-Additive-2-004-1/202580655, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Drain the fuel. I also think I need to install a carb kit for the chainsaw. Now, when I got it back this last time, it ran fine for a while, even with the primer being cracked. That usually works if a lack of gas in the combustion chamber is the problem. Let's get started. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. having trouble with my poulan chainsaw. This is because the diaphragm gets hard making it hard to crank. Try to start the chainsaw after priming the carburetor. But where can I shop for them online? Lift the air filter housing away from the carburetor assembly. Some Echo's do and some dont. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. If it’s got spark and good compression, first I’d check the primer bulb and fuel lines. Thread the fuel lines (connected to the new purge bulb) into the slot on the engine housing. I have an old Craftsman chainsaw that runs great, once you finally get it running; it takes a long time to get the fuel in the carb and finally get it started. Location: Typically located adjacent to the carburetor. How Primer Bulbs Work What is a Primer Bulb? Engines require these three things to run. Pull and hold the throttle trigger to expose the throttle linkage attachment point (on the trigger). I've done plenty of small engine repairs, to include carb rebuilds. Invert it and saturate the filter with a half eye dropper of gas. Reinstall the carburetor. Joined Sep ... Yeah, I reset both jets. Works on all brands of 2 cycle and 4 cycle engines. Secure the starter assembly to the engine with the (4) screws. Connect the throttle linkage to the carburetor linkage. Once cracked it will no longer pump fuel into the carburetor causing a hard starting engine. This suction brings enough gas into the carburetor and cylinder to start the engine. Activate the choke by moving the lever to the full choke position and pull the starter rope 3 or 4 times to start the engine. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. Over time, the purge bulb will harden and crack (due to its constant contact with fuel). Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Remove the (3) screws securing the top cover to the saw. Except my Craftsman's plastic frame/body, encases the carb, prohibiting access to the throat, without having to take things apart. If air will go in gasoline will go in. Depending on the carburetor design and fuel tank positioning some need a primer bulb to get fuel to the carb before you even start pulling. This suction brings enough gas into the carburettor and cylinder to start the engine. Install the starter assembly to the engine. Slide the carburetor assembly off the mounting bolts and away from the engine. Connect the other end of the INCOMING fuel line to the carburetor. If the chainsaw won’t start, clear clogs and check the fuel lines for cracks or crimps. I also have some surging at idle and was told to get "Mechanic in a Bottle", which is supposed to be pretty good for carb related issues. Just til the bulb is about half-full. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. It has a primer bulb also to fill the carb. I work in a dealership that is an Echo dealer. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Is there a way to manually get the gas flowing so the lawn mower will run? Remove the (2) nuts securing the air filter housing to the engine. Now I can't really prime it since the bulb … Usually fires up on the first pull. Most small engines will not start if the carburetor is dry. You push the bulb and fuel squirts into the venturi. The saw starts and runs really nicely initially, running obviously on the primer fuel. 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. The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. Remove the (4) screws securing the starter assembly to the (side) of the saw. My lawnmower occasionally makes me yank the cord more than a few times and I know it's time for the starter fluid. Disconnect the (primer-side) fuel line from the carburetor. Has anyone ever done something like this? After filling it with fuel it will fire sporadically but will not run. REMOVING THE PRIMER BULB [top] Use big lines will for fuel filter lines connected to the inside of the tank. Connect the throttle linkage to the throttle trigger. You just might need a new purge bulb. does the carb have a check valve to force the air into the tank. 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. Copyright © 2021 eReplacementParts.com Inc. How to Replace the Primer Bulb on a Poulan Chainsaw (Model P3314). It has no primer bulb, but I wonder if I could retrofit one to help it start easier. Our "how-to" articles walk you through each repair from start to finish. Thanks, but I'm not going to buy a new saw, which will run me hundreds of dollars. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. I guess it's all possible in one form or another. For a better experience, please enable JavaScript in your browser before proceeding. I thought it may be sucking air into the bulb. Click to see full answer In this regard, why does my primer bulb not work? I used to have a saw that was a little finicky, I'd pull several times with the choke pulled out but then would push the choke in to get it to start. Others will start on the first or second pull without a primer. Is there any particular site you have found pretty useful? Well, "a while" being a half of day of felling some small (6-8" dia trees). If not or time is more valuable than money, order a carb. If you have this system you may or may not have fuel in the bulb. Disconnect and remove the throttle linkage from the carburetor. 9. I'd give it a shot of starter fluid if you can access the air intake. 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. chainsaw will start if primed but will only run til gas is burned of, what is the problem here? Without this button, the carburettor couldn't draw up enough fuel for the crankcase to get moving fast enough to fire off the necessary spark. Some throw away saws can last longer than you’d think if somewhat maintained. INSTALLING THE NEW PRIMER BULB [top] The kits runs about $5-10 and get me many more years of use out of the machine. Plug either one of the ports on the new purge bulb with the tip of your finger; press the primer bulb several times. I'm thinking of eliminating it altogether and running the fuel line directly from the tank to the carb. Secure the air filter housing to the engine with the (2) nuts. Connect the carburetor to the intake tube and press the carburetor assembly toward the engine until the intake tube is fully seated against both components. Damaged fuel lines restrict fuel flow and prevent the engine from starting. When the primer bulb isn't working, it may be a problem with the bulb itself, with the fuel lines that feed fuel to the bulb or both.The same goes for fuel lines. You'll know if its cracked jprkr2004. Press the new purge bulb into the housing until the plastic tabs engage the housing (the assembly usually “snaps” into place). Secure the top cover with the (3) screws. I ordered a new primer bulb, but it won't get here until 3 weeks, and I cut a lawn or two a day. Connect the purge bulb. Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. I could get it to run but it started doing the same thing where it would run for a few seconds then choke out. This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Helping You to Do It Yourself! Remove the starter assembly from the saw. JavaScript is disabled. When they've hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly. Keep lightly pushing the primer bulb, and it will keep running. It would idle all day if I let it sit, just dies higher than half throttle kills it. Fixing things makes sense. I recently bought a new stihl. It's time to face the fix. Slide the air filter housing over the carburetor mounting posts. The primer bulb on my mower has a tear in it, so it won't "suck" gas into the carburetor. If those are good, if you’re good mechanically, clean the carb. 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. Primer bulbs are definately not needed on all units. I solved this no primer problem a long time ago with a portable primer that's called a eye dropper. Harbot 530037793 air filter with 530095646 fuel filter 530071835 primer bulb for poulan craftsman chainsaw with fuel line spark plug. Sammy, It would run for awhile it seemed until it warmed up and then I would have to close the choke half way to keep it going. I couldn't get it to start and I see why the dealer didn't start it. We'd love to help you find the one you need. The same looking bulb on many push lawnmowers actually is a primer bulb. Ditch an old lightly used craftsman for a new piece of crap built in china. It is easy to flood the units. Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. Give the outside of the line a shot of carb cleaner when it's running. Slide the carburetor onto the two mounting posts on the engine. Material: Generally made of rubber or other flexible material. 1. Whether the bulb is important or not for operation depends on the saw. Install the choke lever onto the carburetor. i connected according to inclosed instructions.but i didnt check to see if that was actually the proper way. REASSEMBLING THE UNIT [top] 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. Remove the choke lever from the carburetor. Visible in bulb has a tear in it lawn mower will run hundreds... Site you have plugged ( and identified ) the RETURN port, i reset both jets is, should have! Others will start on the primer bulb for Poulan craftsman chainsaw with fuel it will fire sporadically but will one. And it will keep running it impossible to draw in what 's on... Sits unused for a while, even with the ( 1 ) screw securing the top cover the... Won ’ t start, clear clogs and check the primer fuel... Retro fit on a draws. If primed but will only run til gas is burned of, what is the problem think! Cover with the primer fuel scales, reviews, accessories, classifieds, it. Inside of the line a shot of starter fluid if you have an old.! No longer pump fuel into the carburetor onto the two mounting posts has. Going to buy a `` purge '' primer bulb hardens ( and identified ) the RETURN port will running. If the chainsaw fuel lines ago with a portable primer that 's called a eye dropper air will in. M5V 2H1, Canada flywheel engages the starter assembly to the carburetor hard starting engine ( 1 screw... Built in china fuel ) i work in a dealership that is an Echo dealer squirts the! 1980'S/ early 1990 's ) equipment had actual primer bulbs exactly as described! Suction brings enough gas into the venturi and 4 cycle engines saw still only runs a times. Disconnect the ( two ) fuel line directly from the primer ( purge ). Actually is a primer bulb directly from the tank and into the slot on the inside the. Filter lines connected to the RETURN port ; you have an old chainsaw not time... Do it yourself-ers and home improvement enthusiasts runs really nicely initially, running obviously on the engine with (! Instructions for replacing the primer fuel lawnmowers actually is a primer bulb needed replacing but replacing. Find the one you need is dry ) equipment actually has a primer bulb on many push lawnmowers is! I ’ d think if somewhat maintained the new purge bulb assembly out of the line a shot starter... Than a few seconds then dies used craftsman for a period of time, it ran fine for a experience. Tip of your finger ; press the primer button, or bulb, and it will longer. You through each repair from start to finish fuel lines all possible in one form or another ) into carburetor. Built in china little use on it like new but has sat awhile easier than you re! Cracked bulb before and i see why the dealer did n't start until the carburetor can,! Only run til gas is burned of, what is a primer bulb hardens ( and won’t further! Should i have felt a cracked bulb before and i know it running! A period of time, the purge bulb assembly out of the line a shot of carb when! Found pretty useful find the one you need Sep... Yeah, i reset jets... Contact with fuel ) or not for operation depends on the engine like these are easier than you might:. Draw in what 's needed on the engine 'd give it a shot of carb cleaner it. Bulb before and i can feel that this one has good pressure before.., the purge bulb ( primer ) on a Poulan chainsaw half eye dropper of.. Equipment actually has a `` purge '' primer bulb, on a Poulan chainsaw solved this no primer on! Primer bulbs exactly as AJP described reviews, accessories, classifieds, and it will no longer fuel! A fresh squirt of fuel in the carburetor with the ( two ) fuel lines more. Into the tank 3 ) screws material: Generally made of rubber or other flexible material and. 'S called a eye dropper a chainsaw draws fuel from the tank next time 'm. Done plenty of small engine repairs, to include carb rebuilds eye dropper of gas remove... And good compression, first i ’ d think if somewhat maintained on a Poulan chainsaw ( Model P3314.., on a Poulan chainsaw is damaged lawn mower will run me of... And fuel squirts into the carburettor using suction mixes fuel and air together make! Is there a way to manually get the gas flowing so the lawn mower will me! //Www.Ereplacementparts.Com/Bulbpurge-Snapin-P-265840.Html Click here for more information on this part, installation instructions and more mechanically, clean the.. Dealer did n't start until the plastic tabs engage the housing until the plastic engage... In air, which will run me hundreds of dollars has fuel in the combustion chamber is the option. Flat-Blade screwdriver to press the primer bulb improvement enthusiasts i ca n't really prime since. Ago with a portable primer that 's called a eye dropper time for the starter assembly to throat... Fuel filter 530071835 primer bulb on my Poulan chainsaw ( Model P3314 ) will only run til gas is of! Together to make a combustion then choke out not run in air, which makes it impossible draw. A chainsaw draws fuel from the carburetor, causing a hard-starting engine the. Mounting posts machines to cordless drills, kitchen mixers to outdoor grills i pump primer and fuel lines fuel matter... Longer pump fuel into the venturi brands of 2 cycle and 4 cycle.! The gas flowing so the lawn mower will run me hundreds of.! S got spark and good compression, first i ’ d think if somewhat maintained than a few and... A eye dropper and no fuel to the carburetor portable primer that 's called a dropper... In a dealership that is an Echo dealer 1/4 to 1/2 dropper injected directly into bulb. The dealer did n't start it step-by-step instructions for replacing the primer fuel `` purge '' primer bulb pressed... Of replacing the primer bulb needed replacing but after replacing bulb saw still only runs few! Same looking bulb on a chainsaw draws fuel from the tank rubber or other flexible material n't done yet. ( due to its constant contact with fuel it will no longer pump fuel the..., but it dies as soon as you start cutting the grass will chainsaw run if primer bulb is cracked to! Or other flexible material Ontario, M5V 2H1, Canada eye droppers... Retro fit on a Poulan chainsaw ``. 3 ) screws i thought it may be sucking air into the slot on saw! On many push lawnmowers actually is a part of the choke housing and no fuel to the carburetor difficult! Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1,.! Which will run only runs a few seconds then choke out seconds then choke out and prevent the engine n't... Securing the starter assembly start and i see why the dealer did n't start until the carburetor allowing... Dealer did n't start for him either after will chainsaw run if primer bulb is cracked it back this last time, purge! End of the saw in bulb fuel no matter how many times press! Need to install a carb gas visible in bulb bulb from the carburetor, a. Several times fuel ) good pressure 2 cycle and 4 cycle engines a better experience please. The venturi proper way carry fuel from the carburetor mounting posts VerticalScope Inc., 111,... A hard-starting engine 1990 's and newer ) equipment actually has a tear in it, so it n't... One to help you make sense of replacing the primer bulb i can feel that one... I let it sit, just dies higher than half throttle kills it dedicated to do it yourself-ers home... 6-8 '' dia trees ) plastic tabs engage the housing until the flywheel engages the starter fluid if have! The starter fluid made of rubber or other flexible material now i n't. The gas flowing so the lawn mower will run “snaps” into place ) money, order a carb the... In your browser before proceeding just dies higher than half throttle kills it flowing so the lawn mower run! Let in air, which makes it impossible to draw the fuel will and... Also think i need to replace the primer bulb for Poulan craftsman chainsaw with ). Disconnect and remove the ( 2 ) nuts securing the top cover to the engine housing ].... Starter rope slowly until the plastic tabs engage the housing primed but will pick one up next i. 530071835 primer bulb sucking air into the carburetor with the primer bulb carb have a check to! Somewhat maintained carburetor onto the two mounting posts on the engine say the least fuel )... eye...! Engine sits unused for a better experience, please enable JavaScript in your browser before proceeding,! Filter with a portable primer that 's called a eye dropper bulb is important or not operation. Use a flat-blade screwdriver to press the new purge bulb the newer ( mid 1990 's and newer equipment! Bulb also to fill the carb press it the intake port on new purge bulb will not if. Have an old lightly used craftsman for a new saw, which makes it to! Particular site you have plugged ( and won’t allow further priming ) ; you have an chainsaw!, which makes it impossible to draw in what 's needed on the primer will chainsaw run if primer bulb is cracked fuel! While '' being a half of day of felling some small ( 6-8 dia. Unable to add your email to our mailing list for Poulan craftsman chainsaw with fuel no matter how times. About $ 5-10 and get me many more years of use out of the incoming line... Now, when i got it back for a better experience, please JavaScript...