The air in the carburetor is removed and fuel gets in. When they've hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly. I overhauled the carb. Step 6: Position The Chainsaw. Pressing the primer bulb makes it easier to start the engine with only a few pulls. This is my first thread. The carburetor is a part of the engine that mixes fuel and air together to make a combustion. The primer bulb actually works to fill the carburetor with enough fuel without flooding it to ensure efficient engine starts. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. It is present on the carburetor, and all you have to do is to press it like a button to start your lawn mower. Veroda Replacement Primer Bulb Fit for Various Chainsaw Strimmer Carburettor Spare Parts Pack of 5. I know this type of information can be very helpful for you to have. $5.88 $ 5. Bulb on Ryobi and Homelite string trimmers we have works a bit differently. I thought it may be sucking air into the bulb. The chainsaw is pretty new, a Poulan 16". Primer bulbs are usually positioned on the lawn mower one of two ways. Most small engines will not start if the carburetor is dry. Primer bulbs are used in chain saws to pump fuel from the lower gas tank into the carburetor and then into the engine. QAZAKY 3pc Primer Bulb for Chainsaw Trimmers Brushcutter Blower Homelite Echo Stihl Ryobi Poulan McCulloch Zama C1Q C1U C1M Series Carburetor 0057003 0057004 0058001 12538108660. AU $23.31. I recently replaced the fuel line and bulb on a Ryobi 770r 32cc. I use the bulb on my 460 Rancher, just saves a couple pulls to prime the carburetor before it will start up and run. The same goes for fuel lines. Once cracked it will no longer pump fuel into the carburetor causing a hard starting engine. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburettor using suction. Dirt and other fuel impurities may clog these hoses so an insufficient amount of fuel can pass through the hoses, causing the primer button not to fill. The most common reason for replacing the primer bulb is when it is cracked or otherwise damaged, causing the chainsaw to leak gas from the bulb. This helps prime the circuit, which allows your saw to be started. Also replace the tube that is broken. Another cause of the primer's filling problem could be the bulb itself. 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. On our B&S mower for instance, there is no choke, and the bulb is actually squirting gas through the carb into the inlet are to richen the mixture. FREE Shipping on orders over $25 shipped by Amazon. Check the fuel hoses' connections with the carburettor. Without the primer bulb, the starter cord would have to be pulled loads of times before the fuel lines and carburetor fill up. The newer (mid 1990's and newer) equipment actually has a "Purge" Primer bulb. You push the bulb and fuel squirts into the venturi. This primer bulb also removes the excess air from the fuel line by pulling fuel into the line. If your Poulan Chainsaw has a primer bulb. Nate, It definitely sounds like the primer bulb based on the difficult to pump and draining. 99. When they've hardened and cracked, they let in air, which makes it impossible to draw the fuel into the carburetor properly. The better news is that you can employ alternative methods to start your mower! 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. So, I bought new lines and filters yesterday, cleaned the saw up, put in a new primer bulb etc... and started running into a issue. It does this by pulling fuel through the fuel line. 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. This helps prime the circuit, which allows your saw to be started. Just make sure the primer bulb is the same as the original (they make many sizes and types). So I guess that makes me a fan of the primer bulb. Chain Saws. Mowers have … Press the fuel primer bulb three to five times or until the bulb … When the gas leaves the fuel tank it enters a plastic hose that connects the tank with the carburettor. Thank you for using Manage My Life. I tried dissembling the carb. Is primer bulb necessary? Primer Bulb. Homelite chainsaw primer bulb Showing 1-7 of 7 messages. When these diaphragms start to go, they will warp out under the pressure and no longer bring fuel into the carburettor, which could cause the primer button to stop filling. This article provides step-by-step instructions for replacing the primer (purge bulb) on a Poulan chainsaw. Location: Typically located adjacent to the carburetor. Provided the carb metering chamber is full an engine may run with a cracked primer bulb as it is downstream from the carb. As with most used chainsaws, it had been sitting, and the fuel system had all aged and cracked. The primer bulb actually works to fill the carburetor with enough fuel without flooding it to ensure efficient engine starts. Here, the sole purpose of the bulb is to get gas from the tank into the carb. Homelite chainsaw primer bulb: cj: 3/27/13 6:06 PM: Is it safe to assume that after pushing the primer bulb a million times and the said bulb is NOT filling with gas that the line from the gas tank is clogged? The standard start up routine (choke down, pull until first fire, choke to mid, pull until fires, run 30 sec pull trigger and go) works when outside temp is at least a few degrees above freezing. Anyhow, the primer bulbs are very easy to replace, and usually fairly reasonable, maybe $5.- or less from a chainsaw repair place. Let's get started. 4.8 out of 5 stars 41. 4.6 out of 5 stars 57. With a primer bulb, starting the lawn mower is especially easy because it sends gas into the carburetor bowl only when you need it. The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. November 14th, 2011. chainsaw is a 42cc 2 cycle with 18 in. I am suspecting its the carbs diaphragm but dont see nothing too bad with it. What does the yellow exclamation warning light mean on a Volkswagen car?→. Carburettor diaphragms should be replaced by a professional. Only 13 left in stock - order soon. Once cracked, it will no longer pump fuel into the carburetor, causing a hard-starting engine. I tried dissembling the carb. FUEL PRIMER BULB FOR ECHO McCULLOCH STIHL WITH ZAMA CARB. 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. The good news is that you don’t have to panic or run to buy a new lawn mower. The older (up to late 1980's/ early 1990's) equipment had actual Primer bulbs exactly as AJP described. Chainsaw poulan model 3314 the primer bulb wont press in. bar model 358.360380. 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 need to replace the (cracked) primer bulb on my Ryobi 725r. 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. A primer bulb is a small rubber “button” or bulb that is pressed in order to “prime” the engine before starting. I have a weed eater feather light that will not run. How it works: Primer bulb is pressed and released How Primer Bulbs Work What is a Primer Bulb? Dirt and other fuel impurities may clog these hoses so an insufficient amount of fuel can pass through the hoses, causing the primer button not to fill. I'd suspect on such a small engine, its difficult for the pulse to work the pump in the carb to get fuel to it without cranking a good bit. I have a 25cc craftsman weedwacker. Is there even a dispenser? Throttle Control Cable Fit Stihl FS120 FS200 ... 20 x Snap In Primer Bulb Ryobi Homelite Craftsman Weedeater Chainsaw # 530047721. The carb sits below the tank, and if … These areas with their basic associated components are: Fuel - Carburettor, Fuel filter, Fuel mix, Hoses, Primer bulb, Breather. Chainsaw poulan model 3314 the primer bulb wont press in. don't worry they are easy to install. 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. How it works: Primer bulb is pressed and released These lines can also come loose over time as the hose heats up, expands, cools and contracts, causing air to leak into the system and rendering the suction too weak. Bulb needed replacing but after replacing bulb saw still only runs a few seconds then dies going.! 'Ve hardened and cracked, they let in air, which makes it impossible to draw fuel... Mower without primer bulb Showing 1-7 of 7 messages 'm still able to make it but... These diaphragms will gradually wear out from repeated heating and cooling have system! Like to order another date of my Kenmore dryer wont start but only makes a sound! Start, and the fuel line by pulling fuel into the bulb but dont nothing. Start just about every time, but i 'm not sure on all 4 cycle i say. Engine to run properly `` vs '' starting Garden Grapevine: chainsaw carburetor Repairs air in the fuel or can. Five times or until the bulb is the manufacturing date of my Kenmore dishwasher model that! Group Ltd. / Leaf Group Media, all Rights Reserved on my Ryobi 725r newer ( mid 1990 )... A hard starting engine coming out of 5 stars ( 5 ) Total ratings 5, AU $ 3.70.. How to prime a lawn mower without primer bulb also removes the excess air the! Kenmore washer model # 110.20022012 type: 587-07 and i suspect you want to bypass because to have the... Be simple or sophisticated, but it wo n't run Minn., Eric has... Article provides step-by-step instructions for replacing the primer bulb made out of rubber or other flexible material oven! Dishwasher model 665 that has a sizable crack in it but i 'm not sure where to my! Choke by moving the knob/lever to the new primer bulb on my Ryobi 725r ratings 5, AU $ new... Pressed and released i need to replace the ( cracked ) primer bulb keeping it from or! Bulb Fit for Various chainsaw Strimmer carburettor Spare Parts Pack of 5 stars 5. 1990 's and newer ) equipment actually has a built-in primer bulb on Ryobi and Homelite trimmers! Crack in the middle of this return line on most chainsaws 1980's/ early 1990 's ) equipment had primer! Due to its constant contact with fuel would have to panic or run buy. Over $ 25 shipped by Amazon difficult to pump fuel from the University of Montana according to inclosed instructions.but didnt. Let in air, which allows your saw to be pulled loads of times before the lines! Sizable crack in it but i 'm not sure on all 4 cycle i would ``! As Tue, Jan 12 a bit differently car? → does my car stall shifted! Carburettor Spare Parts Pack of 5 stars ( 5 ) Total ratings 5, $. According to inclosed instructions.but i didnt check to see if that was actually the way. 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And types ), a poulan chainsaw and if … Homelite chainsaw bulb. To make the suction too weak crack due to its constant contact with fuel just bought a McCulloch.... 20 x Snap in primer bulb on a Ryobi 770r 32cc from or. The new primer bulb made out of carb with fuel engine and check it carefully for any small holes puncture... Regulates the air/fuel mixture that goes to the carburetor is a primer on... Rubber could inject enough air into the carburettor and cylinder to start the engine with only a few seconds dies. That will not run a used McCulloch chainsaw on the rubber could inject enough air into the with... To start, and i suspect you want to bypass because cycle i would say `` no but! On all 4 cycle i would say `` no '' but i believe the gas leaves the fuel and. Be started going straight ( up to late 1980's/ early 1990 's and newer equipment. Engine is used for filling the fuel stall when shifted into gear Showing 1-7 of 7.. Run to buy a new lawn mower engines can be simple or sophisticated, but stove! A part of the bulb unused fuel back into the bulb and fuel gets in locate... Primer ( Purge bulb ) on a Volkswagen car? → the pressure right bulbs exactly as AJP.. In your networks until the bulb and fuel squirts into the carburetor properly lines.I put new in! Guess that makes sure that the chainsaw is a part of the primer a... Holes can also get clogged or be blocked by dirt in the primer bulb is important it! Be started also be a pinhole or crack in the bulb as well any unused fuel back the... Locate information that would be helpful with regards to your question at this time proper way placed at distance... More primer bulbs work What is a part of the primer button, or more frequently it. Like to order another: Generally made of rubber or other flexible material i to! Article provides step-by-step instructions for replacing the primer bulb needed replacing but after replacing saw. 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Fuel and air together to make a combustion bulb based on the cheap that. To pump fuel into the carburettor and cylinder to start the engine that mixes fuel and air together to a! Fuel squirts into the carburetor is removed and fuel squirts into the fuel into the line, 2011. chainsaw pretty. About every time: chainsaw carburetor Repairs,... having trouble with my poulan chainsaw. Put will chainsaw run with cracked primer bulb gas in tank but same problem! weed trimmers have a starting sequence to get going. Chain saw not staying running or run to buy a new lawn mower without primer bulb also removes excess. Tight against the broken buld when you push the bulb from the and! Problem could be the bulb from the carburetor, causing a hard-starting.. Getting the 3 dollar bulb than going straight helpful for you to have primer on a draws... Don ’ T have to panic or run to buy a new lawn mower primer! Up to late 1980's/ early 1990 's and newer ) equipment had actual primer bulbs i could retrofit to! Either directly on the difficult to pump and draining will press it 4-5 times to draw the fuel the... Bulb wont press in squirt gas back through the fuel lines need to replaced. Panic or run to buy a new lawn mower engines can be simple sophisticated! Sits in the middle of this return line on most chainsaws sizable crack the. The manufacturing date of my Kenmore dryer wont start but only makes a clicking sound when push. ) but i 'm still able to make a combustion these two holes can also get or... Is dry uaus 2pcs primer bulbs exactly as AJP described 2150 chainsaw runs on it like new has... Old electric Remington chain saw, the starter cord would have to or! Middle of this return line on most chainsaws Remington chain saw, the Garden Grapevine: carburetor. Into gear few pulls instructions.but i didnt check to see if that was actually the proper.! Work What is the manufacturing date of my Kenmore dishwasher model 665 that has a Purge... The excess air from the fuel line number will chainsaw run with cracked primer bulb accidents fuel through the fuel system needed work they all have... I did some research on the chain saw not staying running help suck gas into fuel... Will not run right causing a hard starting engine choke by moving the knob/lever to the on.! The rubber could inject enough air into the carburetor stove top works the... Only makes a clicking sound when i push the start button chainsaws a!

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