Press the new purge bulb into the housing until the plastic tabs engage the housing (the assembly usually “snaps” into place). Plug either one of the ports on the new purge bulb with the tip of your finger; press the primer bulb several times. Connect the throttle linkage to the throttle trigger. Without a functioning purge bulb, you must pull the starter rope multiple times until the carburetor diaphragm can pump enough fuel back into the carburetor for the engine to start. Well, "a while" being a half of day of felling some small (6-8" dia trees). This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Our "how-to" articles walk you through each repair from start to finish. Haven't done that yet but will pick one up next time I'm at the apron store. REMOVING THE PRIMER BULB [top] 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. JavaScript is disabled. http://www.ereplacementparts.com/bulbpurge-snapin-p-265840.html Click here for more information on this part, installation instructions and more. I've got a Poulan chainsaw that runs fine for 1 or 2 tanks of gas but seems to be starved for fuel after it gets hot. 7. Location: Typically located adjacent to the carburetor. 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. 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. Need chainsaw parts? The same looking bulb on many push lawnmowers actually is a primer bulb. Chainsaw has little use on it like new but has sat awhile. We were unable to add your email to our mailing list. It has a primer bulb also to fill the carb. Use big lines will for fuel filter lines connected to the inside of the tank. Install the starter assembly to the engine. Slide the air filter housing over the carburetor mounting posts. But where can I shop for them online? Pull and hold the throttle trigger to expose the throttle linkage attachment point (on the trigger). Slide the carburetor onto the two mounting posts on the engine. Disconnect and remove the throttle linkage from the carburetor. When I removed the cracked bulb it had pieces of plastic and debri in it so I disassembled the carb and cleaned it all out good, making sure all ports were open and clean. Click to see full answer In this regard, why does my primer bulb not work? Is there any particular site you have found pretty useful? Some Echo's do and some dont. Usually fires up on the first pull. Once cracked it will no longer pump fuel into the carburetor causing a hard starting engine. My lawnmower occasionally makes me yank the cord more than a few times and I know it's time for the starter fluid. Primer bulbs are definately not needed on all units. Invert it and saturate the filter with a half eye dropper of gas. If the chainsaw won’t start, clear clogs and check the fuel lines for cracks or crimps. Try to start the chainsaw after priming the carburetor. This suction brings enough gas into the carburettor and cylinder to start the engine. Remove the (1) screw securing the air filter housing to the engine. These areas with their basic associated components are: Fuel - Carburettor, Fuel filter, Fuel mix, Hoses, Primer bulb, Breather From an engine not starting to an engine with poor running performance, there are three basic areas that should be investigated first to eliminate the easy, items. Cold starting a gas engine without a fresh squirt of fuel in the carburetor is difficult to say the least . Pretty common to crack and suck air. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. Prior to the advent of those primer bulbs that was all we had to aid with starting ..... and I don't remember any issues. 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 is because the diaphragm gets hard making it hard to crank. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. If you have this system you may or may not have fuel in the bulb. Slide the purge bulb assembly out of the engine housing. I need to replace the (cracked) primer bulb on my Ryobi 725r. Remove the choke lever from the carburetor. Use a flat-blade screwdriver to press the tabs on the inside of the purge bulb assembly. Some throw away saws can last longer than you’d think if somewhat maintained. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! If it’s got spark and good compression, first I’d check the primer bulb and fuel lines. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. 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. This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Answer (1 of 3): There is plenty of information on a Mac, or McCulloch, chain saw on McCullochPower.com, including a detailed parts list and FAQ. 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. If those are good, if you’re good mechanically, clean the carb. Secure the top cover with the (3) screws. Pull the starter rope slowly until the flywheel engages the starter assembly. Remove the (4) screws securing the starter assembly to the (side) of the saw. Give the outside of the line a shot of carb cleaner when it's running. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. 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. So, doing-it-yourself means never having to do it alone. After filling it with fuel it will fire sporadically but will not run. For a question such as this, however, it is best to contact their handheld department by phone on 1-800-554-6723, or visit a hardware store who will have someone with chainsaw expertise. You push the bulb and fuel squirts into the venturi. Now that's some logic. Most small engines will not start if the carburetor is dry. Chainsaw need a checkup? The primer bulb will not fill with fuel no matter how many times a press it. i connected according to inclosed instructions.but i didnt check to see if that was actually the proper way. Let's get started. You just might need a new purge bulb. Whether the bulb is important or not for operation depends on the saw. I work in a dealership that is an Echo dealer. Reinstall the carburetor. 1. REASSEMBLING THE UNIT [top] Secure the starter assembly to the engine with the (4) 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. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburettor using suction. I thought it may be sucking air into the bulb. 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. Over time, the purge bulb will harden and crack (due to its constant contact with fuel). Fixing things makes sense. It's time to face the fix. The chainsaw fuel lines that carry fuel from the tank to the carburetor can clog, crimp or crack over time. It is easy to flood the units. This will release the purge bulb from the housing. When you use the tool next, the engine can't start until the carburetor once again has fuel in it. I guess it's all possible in one form or another. Secure the air filter housing to the carburetor with the (1) screw. The purge bulb (more commonly called the primer bulb) manually pumps fuel into the carburetor, which purges the air out of the carburetor. Except my Craftsman's plastic frame/body, encases the carb, prohibiting access to the throat, without having to take things apart. having trouble with my poulan chainsaw. Right now it starts, but it dies as soon as you start cutting the grass. Keep lightly pushing the primer bulb, and it will keep running. Just til the bulb is about half-full. question is , should i have gas visible in bulb. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. Install the choke lever onto the carburetor. Does anyone know where you can buy a "generic" primer bulb for something like this? I'd give it a shot of starter fluid if you can access the air intake. Connect the other end of the INCOMING fuel line to the carburetor. Lift the air filter housing away from the carburetor assembly. the primer bulb needed replacing but after replacing bulb saw still only runs a few seconds then dies. Replacement of carburetor is the best option if you have an old chainsaw. It then dies after a couple of seconds. INSTALLING THE NEW PRIMER BULB [top] I'm thinking of eliminating it altogether and running the fuel line directly from the tank to the carb. 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. Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. Does it take forever to get your engine started? On models with a primer bulb, press and release the bulb twice to prime the carburetor, which clears air from the fuel lines and move fuel into the carburetor. Connect the FUEL RETURN line to the RETURN port on new purge bulb. OEM Poulan Chainsaw Kit-Purge Bulb | Ships Now, when I got it back this last time, it ran fine for a while, even with the primer being cracked. I also think I need to install a carb kit for the chainsaw. Material: Generally made of rubber or other flexible material. How it works: Primer bulb is pressed and released If not or time is more valuable than money, order a carb. The purge/primer bulb on my poulan chainsaw is damaged. Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Pull and hold the throttle trigger to expose the attachment point for the trigger-portion of the throttle linkage. Damaged fuel lines restrict fuel flow and prevent the engine from starting. Ditch an old lightly used craftsman for a new piece of crap built in china. I took apart the carb, and everything looks really nice and clean, but what I … Others will start on the first or second pull without a primer. Yes, I'm just an occasional user. 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. Secure the air filter housing to the engine with the (2) nuts. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. Helping You to Do It Yourself! If the primer bulb softens (deflates) without returning to its original shape; you have plugged (and identified) the INTAKE port. Great idea! I had a green rear handle Poulan Super Clean 2050 as a truck saw for years and it always started and ran fine even though the purge bulb was broken completely open. You'll know if its cracked jprkr2004. What is the proper routing of the fuel lines on a Husqvarna e235 chain saw with a primer bulb? I couldn't get it to start and I see why the dealer didn't start it. I have felt a cracked bulb before and I can feel that this one has good pressure. Disconnect the (primer-side) fuel line from the carburetor. Thread the fuel lines (connected to the new purge bulb) into the slot on the engine housing. We'd love to help you find the one you need. I've done kits on these small engines before (e.g., weed whacker), so it's not a big deal. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. The usefulness of primer bulbs is often under-appreciated until tool users go to start their machines and find their engine's primer bulb excessively worn, broken, or cracked. Is there a way to manually get the gas flowing so the lawn mower will run? A carb rebuild on a small saw is silly most of the time because you can replace the thing (carb) at a lower cost most of the time & if you have any wear or damage to the carb body your rebuild kit will not help. 5. 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. Connect one end of the incoming fuel line (the shorter line) to the INTAKE port on the new purge bulb. If the primer bulb hardens (and won’t allow further priming); you have plugged (and identified) the RETURN port. Harbot 530037793 air filter with 530095646 fuel filter 530071835 primer bulb for poulan craftsman chainsaw with fuel line spark plug. I solved this no primer problem a long time ago with a portable primer that's called a eye dropper. About 1/4 to 1/2 dropper injected directly into the carburetor throat allowing the piston to draw in what's needed on the intake stroke. I could get it to run but it started doing the same thing where it would run for a few seconds then choke out. Use long-nosed pliers to disconnect the (two) fuel lines from the purge bulb. 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. The kits runs about $5-10 and get me many more years of use out of the machine. Connect the throttle linkage to the carburetor linkage. Remove the (3) screws securing the top cover to the saw. Disconnect the linkage from the throttle trigger. After I have run it dry, refilled it, pressed the primer bulb a few times, I go through the same starting sequence I normally use (successfully) before having run it out: - click kill switch to "run" - engage trigger interlock chainsaw will start if primed but will only run til gas is burned of, what is the problem here? 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