You can replace the fuel lines and the primer bulb yourself. The Process To Start A Lawn Mower Without A Primer Bulb: We know that a primer bulb transmits gas in the carburetor bowl to turn the mower on. Small perforations on the rubber could inject enough air into the fuel system to make the suction too weak. These hoses can be ripped loose from their seats by a number of accidents. As previously instructed, everything should now be turned off. HIPA Primer Bulb Pump 188-512 for Poulan P4018AV-BH P4018WM P4018WT P4018WTL PP3516 Pro PP3516AVX PP3816 PP3816AV PP4018 Pro PP4018 Pro PP4218 PP4218AV PP4218AVHD Gas Saw One is the supply, with the filter on the end and the other is the return. Make sure that you get the tubing that is made for fuel. Some models of Craftsman chainsaws have a separate primer bulb. How do I dispose of it? 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. How Can I tighten up suction cups on a medical reacher? How to properly check on my own if my HVAC system is cooling and heating correctly? Here's what I've done so far I've replaced the fuel lines and fuel filter Cleaned our the gas tank and put in fresh no-ethanol fuel with good quality two stroke oil at recommended mix ratio Air filter is off for the 'getting started' process' I've cleaned the muffler and spark arrestir. I show how to replace a primer bulb. Do I need to get one? Relevance. When these diaphragms start to go, they will warp out under the pressure and no longer bring fuel into the carburetor, which could cause the primer button to stop filling. Otherwise, nice little carburetor! This video provides step-by-step repair instructions for replacing the primer bulb on an Echo chainsaw. question is , should i have gas visible in bulb. 8. Can a water leak increase my electricity bill? In this case, one more fuel line will need to run from the bulb to the metering inlet on the carburetor. I didn't want to drive 10 miles to buy a primer bulb for a Homelite sx 125 2 cycle string trimmer so I used the outside of the bulb mounting plate as a pattern to cut a gasket. Check to make sure the fuel pump pulse passage is drilled so crankcase vacuum pulse can operate the fuel pump diaphragm. 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 bulb is otherwise known as the fuel pump. 2-Pack 14" Semi Chisel Saw Chain for McCulloch MAC Chainsaws - (14 .I have a Mac chainsaw. Can you run a chainsaw without a primer bulb? The primer bulb sits in the middle of this return line on most chainsaws. I am reviving a 10 year old string trimmer and all the fuel hoses are disintegrated due to exposure to extended exposure to fuel presumably. Move the fuel line through the primer bulb housing and hold the primer bulb up to the fuel line Mark desired length and cut to size If the old primer suction line was intact, you can measure and cut a new piece of fuel line to the same length and attach it to the intake port on the primer bulb … The newer models of a gas-powered chainsaw have an air purge bulb instead. You must push the primer bulb 4 to 6 times to send the fuel into the carburetor, which feeds air and fuel to the engine. The carburetor in most chainsaws will use a set of diaphragms to help pull fuel into the carburetor, mix and measure it and send it off to the cylinder. So I guestimated the connections. Most small engines will not start if the carburetor is dry. You can sign in to vote the answer. Hipa 4 Pack 12318139130 Primer Bulb for Echo CS400 CS310 CS300 CS301 CS305 CS306 CS340 CS341 CS345 CS346 CS352 CS370 CS3400 CS3450 CS450 Chainsaw PB770H PB770T SRM400U SRM410U Purge Bulb Fuel Line 4.7 out of 5 stars 222. Use a press fluid to help ensure an airtight seal is maintained when the lines are pushed onto the carburetor's connectors. It hadn’t been used for a season and on inspection had brittle fuel lines one of which was broken, I replaced all the fuel lines and the machine started and ran for 30 minutes through the job. Some of my 2 cycle power equipment have primer bulbs and some do not. Tie some strong thread to the end of the tube and thread it through the hole in the case. These two holes can also get clogged or be blocked by dirt in the fuel. I went through the same ordeal several years ago and know this for a fact. 4. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. Without the bulb your carb will be flooded on a permanent basis. Won't start. It is labeled an air purge assembly on the parts diagram. There should be a poulan chainsaw dealer in your area that will have it or you he can order the correct part for you. A primer bulb … Sounds like the lines are wrong. Favorite Answer. Took the saw to the repair shop and had them replace all the fuel lines and install a new primer bulb, saw still runs great! Replace any worn or cracked bulbs. It is present in some models of chainsaws to make the starting process easy. Then, without priming, try restarting with all systems on. You can replace the fuel lines and the primer bulb yourself. 1 decade ago. i connected according to inclosed instructions.but i didnt check to see if that was actually the proper way. Carburetor diaphragms should be replaced by a professional. Join Yahoo Answers and get 100 points today. Lv 7. Without going into details the primer bulb forces fuel to the carb jets and not the engine directly. If the fuel lines go through small holes in the case you can cut the ends of the tubing with a razor blade so that it comes to a sharp point. Been sitting unused for a long while. I have 1950 poulan chainsaw it is missing a primer bulb. Then you have to press the primer bulb 3 to 4 times. 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. Check the fuel hoses' connections with the carburetor. Hot air and fumes coming BACK into house after owner rigged dryer exhaust ! No, it won't work depending on the engine design. Is there a way to manually get the gas flowing so the lawn mower will run? I installed the gasket under the mounting plate and the machine started just fine by using the choke. Also on of the tubes are broken. Hunker may earn compensation through affiliate links in this story. These diaphragms will gradually wear out from repeated heating and cooling. @ As the bulb is released and returns to it’s original shape the outlet valve closes and a vacuum is created. Can you run a chainsaw without a primer bulb? This video illustrates the proper ways to start a STIHL chainsaw, as well as which methods to avoid (such as drop starting) and why. Easy Starting the Poulan Chainsaw: Steps. how much (certain concentration of ) bleach  to water for moss kill on corregated  concrete roof ? 'Angry' Pence navigates fallout from rift with Trump, Dems draft new article of impeachment against Trump, Unusually high amount of cash floating around, 'Xena' actress slams co-star over conspiracy theory, Popovich goes off on 'deranged' Trump after riot, These are the rioters who stormed the nation's Capitol, Flight attendants: Pro-Trump mob was 'dangerous', Dr. Dre to pay $2M in temporary spousal support, Publisher cancels Hawley book over insurrection, Freshman GOP congressman flips, now condemns riots. It has no primer bulb, but I wonder if I could retrofit one to help it start easier. 99 Do I need to get one? Still have questions? If you install one that looks the same your saw will not start or if it does will not run right. does the carb have a check valve to force the air into the tank. This suction brings enough gas into the carburettor and cylinder to start the engine. Right now it starts, but it dies as soon as you start cutting the grass. Just caught a mouse on a sticky trap. Also, while using it you may see Poulan chainsaw won ‘t start when hot, so, wait for a little in between the uses of the chainsaw. All the fuel lines fell apart, including the bulb from sitting. URGENT! The primer bulb fills with gas (fresh) but I believe the gas is not getting through the carburettor. He holds a Bachelor of Arts in creative writing from the University of Montana. The fuel hoses connect to two elbow connector joints on the carburetor. MissIng chainsaw primer bulb? 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. Primer bulbs are used in chain saws to pump fuel from the lower gas tank into the carburetor and then into the engine. Another cause of the primer's filling problem could be the bulb itself. HPENP Air Fuel Filter Primer Bulb Fuel Line Spark Plug for Poulan Craftsman Chainsaw Replaces 530037793 530095646 530071835 188-513-1 4.6 out of 5 stars 18 $7.99 $ 7 . You will need the make and model of the carburetor to get the right primer bulb. When the gas leaves the fuel tank it enters a plastic hose that connects the tank with the carburetor. The purge bulb (more commonly called the primer bulb) manually pumps fuel into the carburetor, which purges the air out of the carburetor. Lube it a bit with oil and it should slide throgh the hole. 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. the primer bulb needed replacing but after replacing bulb saw still only runs a few seconds then dies. The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. You shouldn't be pressurizing the tank. Another fuel hose brings any unused fuel back into the tank. Get your answers by asking now. !. I had this problem several years back. Yes ,you need a primer bulb. Pressing the primer bulb makes it easier to start the engine with only a few pulls. Without going into details the primer bulb forces fuel to the carb jets and not the engine directly. The air in the carburetor is removed and fuel gets in. Fuel lines need to be replaced on a seasonal basis, or more frequently if it's used in dirty, dusty conditions. Customer questions & answers. renpen. primer bulb : Part Number: 300780002 Specs: Equipment Type: Chainsaw Equipment Type: Brush Cutter Equipment Type: Leaf Blower Equipment Type: Pole Saw Equipment Type: String Trimmer Equipment Type: Tiller Fits Model: HOMELITE : UT10918 Chainsaw HOMELITE : HBC38 HBC40 String Trimmer HOMELITE : UT08514 UT-08542 UT-08542-A UT-08542-B UT-08072 UT-08072A Blower Make sure that you get the tubing that is made for fuel. Check the points on the underside of the bulb as well. 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. check valve.