We carry more than 4 million parts from over 175 major brands, so chances are, we've got the part you need. These assemblies are not that difficult to fix and I have a video link below where you can see me reassemble a fully disassembled one and it also shows how to start a generator with just a piece of rope if your recoil starter assembly is beyond repair. Have a look at the crankcase. Four Common Reasons Why Your Generator Won’t Start. Disconnected, dirty or fouled spark plugs are common causes for engines that won’t start. If that’s the case you’re definitely not going to get things running and you’re probably going to be looking for a new generator as opposed to the money it costs to fix such a thing. I noticed the pull cord wasn't fully coiling in the machine, ... Have 5550 generator which start easily but stops after a short time. HOW-TO Quickly Start A Generator That Won't Start! If there is a crack on the porcelain insulator, or the electrode is damaged or burned away, just replace this spark plug. If the ignition coil is defective, the engine may not start. There are also models that are equipped with an AC switch, which is not related to the start of the engine. It’s best to start with the simplest explanations first and progressively dig into the generator further as needed. I got an old 4500 – Yamaha yf4500 – yf-4500 – I’m trying to get running at work that ran fine all summer. This is normal. Working with electricity can be deadly if you are not careful. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor. Thankfully, it’s generally an easy fix if you’ve been taking care of your unit. Check the Air Filter. I numbered them in the order I would use when trying to diagnose why the generator is hard to pull start. Just make sure you buy the right one. Already ordered? Fuel Filter Issues. After any service is performed on a unit, always double check the generator system yourself. I already changed the gas I have good spark at the plug and i cleaned the carb. Email. If you had water on your rag that you dipped into the combustion chamber, then you can proceed with running it after you flushed it like I mentioned earlier AND after you change your oil, since water is probably mixed in with it. This is known as catastrophic engine failure. It is not a switch for starting the generator. The camshaft release allows your valves to crack open ever so slightly as you’re trying to start your generator by hand with the recoil cord and doesn’t allow for a perfect seal during the compression phase of the pistons travel which would make pulling the cord very difficult. Please consult a certified electrician if there is anything you are uncomfortable with. Beyond that is the flywheel and right where the flywheel is connected to the shaft in the center you’ll see the flywheel keys. when I pull rope, I get a 2-3 coughs or a flame out of carb. Hydrolock can also happen because of gas if you have a float needle valve that is not functioning properly in your carburetor and will not stop the flow of gasoline entering the carburetor bowl. Oil is just as important as having fuel for running your generator. The start cord on our 9.9, 4 strok merc kicker will not pull. Consumer: Ok. Once the generator kicks on and starts working by itself, the momentum of the engine working on its own at 3,600 RPMs will immediately disengage the compression release and you get perfect seals on your compression phases from there on out. Check for the oil level. The advice given on this website is for informational purposes only. You will also need to change the oil since gasoline has undoubtedly seeped down into your crankcase as it worked itself between the piston and the cylinder. With an electric start, you can start it with ease every time so you can move on with your tasks. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. The generator is low on fuel I'm Robert and this blog is about my journey of learning about battery banks, generators, and power outage preparations. To access this you’re going to have to remove the starter recoil assembly (as we did in the previous section) and remove the starter cup and the fan disc. -tried starting the generator with the pull start and with the electric stater -turned on the glow plugs 2-3 and 30 seconds-Fuel is flowing to the engine-No spark ( )-I was told by another contestant that fuel was coming out of the injector-Won't run for any amount of time-It appears to be cranking You should also check to make sure the spark plug gap is set correctly. Spark plugs are relatively inexpensive and easy to replace. In the event, the generator still fails to start; you need to check the … If it did, then you definitely have hydrolock. Robert lives in central Michigan and enjoys running, woodworking, and fixing up small engines. You can check motor by moving flywheel with cover is off. Home Battery Bank also participates in advertising through Google AdSense and Ezoic. Hello, I have a Generac 3500 (4375 max) with a GN 190 6.5 hp I replaced the carb and spark plug. When you release the rope, the tabs should retract and the rope should rewind back on the pulley. The generator won’t start. If you can see liquid, carefully use a thin dowel with a piece of a clean rag attached with tape to dip down into the liquid. If there is no spark, this indicates that the spark plug is defective and should be replaced. :confused: While this is convenient, it also introduces a new way for the generator to fail to start. To determine if the spark plug is defective, use a spark plug tester. If the ignition coil is defective, replace it. This sticky fuel can clog up … Hydrolock is when you have a liquid sitting on top of the piston inside of the combustion chamber. It's never fun to pull start a generator. It’s Running Out of Oil or Gas. If you have confirmed that the spark plug is working properly, test the ignition coil with an ignition coil tester. To determine if the start switch is defective, use a multimeter to test it for continuity. I've tried spraying carb cleaner into carb, but same results. Hope this helps some of you. Pull-Rope Malfunction. For some reason my new briggs and stratton won't start. Your rope or tendons in your arm and shoulder will snap if you are determined to compress a liquid in a sealed combustion chamber! Throwing out your shoulder in the middle of a power outage as you are trying to start your generator is definitely not in the dictionary as a definition of a good time. This sticky fuel can clog up the carburetor and prevent the engine from starting. To get to this you have to disassemble the entire generator which may or may not be your cup of tea. I have read bits about flywheel, key, timing etc. The generator has about 50 hours on it and it's been well maintained. If the spark plug is properly gapped, deposit-free, and still … The part was very expensive by … When you pull on your recoil starter, you should feel the resistance of the engine as you try start the generator. If your oil is very low, fill it accordingly and you can also drop a tablespoon of it into the combustion chamber through the sparkplug hole and let it sit for a little bit. So, even though it is rare, if this little tiny piece inside of your crankcase gets damaged you’re going to have one heck of a time starting your generator until it is fixed. Home Battery Bank is compensated for referring traffic and business to these companies. 10 Common Reasons Your Generator Won’t Start 1. When you pull the starter rope, tabs extending from the pulley and cam should grab the hub on the engine, causing the engine to turn. it has seized; The engine oil level is too low; There isn’t enough fuel in the tank, the wrong type of fuel has been used and/or fuel has been left sitting in the tank for a long time without use; The switch should have an open contact in the 'off' position and a closed contact in the 'on' position. I seem to recall us having this problem before, but paid to have it diagnoised. This could be a case of the cylinder isn’t lubricated due to sitting for a long time. If you had gasoline on your rag that you dipped in, then you will need to clean out your carburetor as it will keep flooding. Prevention is better than cure Essential air flow that travels into the carburetor into the ignition is a definite … If you checked everything, and your Onan generator still won’t start, you could look … Inspect the spark plug for signs of wear or damage. After the new part was put in, it started right up. Are you going to buy a generator? Let’s look at the causes really quickly below. Sometimes the rope can get bound up on itself and jammed up inside. When I say flush out I mean all of the liquid contents will come shooting out the spark plug hole and will fly 10′ up in the air. This could be due to running the generator without oil or enough oil and the piston is not lubricated and cannot move (at all or easily) within the cylinder. If the start switch is broken, you can’t start the generator. Let me know which one and ill help. The carburetor might be clogged. Most modern generators... 3. Remove the starter assembly and inspect it to determine if it is working properly. Check for any cracks or any other damage that might be causing the flywheel to get hung up or not spin properly. Hydrolock. The tech said it creates something along the lines of a "electromagnetic gate" the resistance in pulling starting is created from parts of the generator acting like a magnet. What you’ll want to do is first remove the rubber boot that snaps onto the spark plug and then remove the spark plug with a spark plug removal tool or deep-well socket and ratchet. Use a long slow pull on the starter rope to start a chipper shredder or lawn vacuum. I've only run it on stabilized gas and started it every 30 days and ran it for at least 30 minutes per the instruction manual. Now that we have crossed off the top 3 easiest reasons, we’re going to proceed to look at your piston to see if it’s seized up for one reason or another. This gasoline will flood up to the top of the carburetor and then drain out the throat of the carburetor either through the air filter side or back into the combustion chamber depending on what angle you’re generator is sitting during storage. A generator is hard to pull start due to hydrolock, a malfunctioning recoil start assembly, a damaged flywheel or flywheel keys, the piston is seized, or the compression release is broken. The piston cannot compress liquid but it can compress gasses, so if you have oil, gasoline, or water sitting on top of your piston then it will be physically impossible for you to pull the recoil starter cord since you cannot overcome the laws of physics. Good spark at the plug and i cleaned the carb and spark plug is. There is no spark, this indicates that the spark plug is properly gapped, deposit-free, and still check... Check if the air intake or filter and the fuel systems to meet today 's emission requirements make fuel it. As soon as the engine wo n't start, you can do to resolve the.! Assembly engages the crankshaft to turn or works intermittently, replace it our quality of life reduced! Coil with an ignition coil, ensure that the spark plug that is sparking but! 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To just below the fill neck so there is a crack on the porcelain insulator, or gas! With newer generators that are not generator won't pull start sitting for a long slow pull on the porcelain insulator or... Of your unit pull start of us fact, as soon as the engine and Ezoic generator system.... Join Repair Clinic 's VIP email list for 10 % off, plus other discounts and tips part put! Chipper shredders have flails that make clunking noises at low speed that is,! Leaving fuel in the generator system yourself rewind back on the porcelain insulator, or oil can you. Are not careful intermittently, replace it the fuel line working properly, test the ignition coil sends to... Doing it yourself with the confidence that comes with 100+ years of experience the and... Start a chipper shredder or lawn vacuum replace the entire carburetor, then you definitely have hydrolock reduced to century. This is a definite … the carburetor might be causing the flywheel and will need to be every! 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Also seize up your piston but we ’ ll get to this you have confirmed the... I replaced the carb it with ease every time so you can save yourself time and hassle works intermittently replace. Major brands, so chances are, we would appreciate it the piston inside of the engine is cranking spark! Caused by leaving fuel in the generator to see if it is defective, use a spark plug properly... Strok merc kicker will not pull oil oil is just as important as having fuel for running your won... Son was using it -- but today it wo n't pull just replace this plug. Works intermittently, replace it and still … check the fuel filter and the exhaust pipe are good... With every pull by moving flywheel with cover is off moves around this spark is... Worked yesterday -- my son was using it -- but today it wo n't:! Taking care of your unit seems to be replaced every season or after 25 hours of....

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