Outboard motor flywheel turns then stops. Hence the dreadful screeching noise.
Outboard motor flywheel turns then stops Starter is new. When it breaks, it grows in length and becomes too long to fit in the space it's in. They can answer questions for any Yamaha outboard model or horsepower. Jul 23, 2022 · The Suzuki 115 four-stroke outboard motors can easily outperform the other four strokes outboards available in the market. After 5-10 turns of the key it will eventually disengage and then often fire right up on the very next turn (and usually the next 5-10 starts after that). Is there a trick to holding the flywheel on place to tighten the nut, without damaging any powerhead May 31, 2023 · The Boating Forum - Starter engages but won’t turn flywheel. When i try to start it up. Jan 22, 2024 · Run time These tests are about how long your engine runs before it stops. Then see if you have a lot of play in the starter shaft or if the starter is bolted securely to the motor, it should not be able to end up tooth to tooth like that Remember no good deed goes unpunished Here are 9 common reasons why an outboard dies at idle: Carburetor issues Idle settings not configured Water in the fuel supply Clogged fuel tank vent Malfunctioning idle air control valve Fuel system issues Faulty spark plugs Fuel injection issues Damaged thermostat Keep reading for an in-depth analysis of the most common causes of problems that make your outboard motor stall. Removing the spark plug allows easier rotation, indicating possible cylinder or valve interference. Once tension is applied, some light heat around the hub and upward glancing blows with a rubber mallet can help. Lubricated pistons. Evinrude engines are all about simplicity and require a little bit of maintenance, which makes them more comfortable & convenient to have. LMorgan 02-17-2018 07:48 PM Mar 29, 2021 · Fuel The main reason for your outboard engine not working will be the fuel system, often because fuel has been left in the engine over winter. Jul 23, 2022 · 3 Common Mercury 4 Stroke Outboard Motor Problems: 1. Moved the jumper to the "in" positive post of the solenoid and then turned the ignition and "boom" everything was working great. Am I screwed? Apr 27, 2006 · I thought there was a problem with the recoil, but its fine. If not then I would remove the lower unit and retry. When I tighten the flywheel shaft nut, the flywheel/crankshaft turns and I can't tighten it to the 100 ft-lb tight per specs. But don’t panic! By understanding the signs and symptoms, you can diagnose the Jan 24, 2017 · When a Suzuki outboard motor stops running because of an overload on the engine, or begins to operate irregular, then follow these simple troubleshooting steps to pinpoint the cause of the problem. Learn how an outboard motor ignition system works, including key components like the battery, starter solenoid, flywheel, and ignition coil. It’s tough to turn by hand. Has this issue with the pull start just started recently, or has it been happening for a while? Customer: Friend Nov 27, 2017 · 15 simple things to check if the outboard won't start -- along with how to fix them at least well enough to get home. But the starter shaft keeps turning inside the bendix assembly. Explore our comprehensive Yamaha Outboard troubleshooting guide to fix common issues and ensure your engine runs smoothly and efficiently. Feb 22, 2024 · The starter pinion gears are located in front of the starter motor. How easy should it be to turn the flywheel by hand? 2. We would like to show you a description here but the site won’t allow us. If you tried a new battery and the started kicks in but doesn Aug 10, 2016 · The prop spins freely in neutral. That means something is holding the crankshaft tight. I’ll also Solenoid sends power to the starter motor to spin and then, in turn, spinning the flywheel. Flywheel tough to turn - Have an evinrude 88 SPL with new starter and battery. If the engine turns but won't catch, your engine cutoff switch may have a short. The motor is considered a feedback system, meaning it relies on the inertia from one cycle to start the next. its a very sudden lock and not a seize. Connections all good. I will wait a second of two till the spinning stops and I try it againcranks then releases the flywheel, and winds downits like the If the engine turns over then stops and the flywheel locks when turned backward, check for internal mechanical binding. It turns the motor a bit and stops At first i thought the motor was seized but when we turn the flywheel opposite direction it turns and stops too and vice versaalso as if there is something stuck in side What might be the problem? Last edited by Boatlife; 05-05-2020, 04: Flywheel Replacement If the flywheel is damaged, then you have to replace it. I thought battery might be tired, so charged it for hours, even left the charger on and tried starting mower - same result. I get the impression that it is flooded, but if that is the case, then why? Sep 13, 2020 · My motor run great from idle to wot for about 10-15 minutes, then starts cutting out. Fly wheel on outboard struggling to turn. After years of use, the contacts get burned and won't transfer current properly. Impossible to pull rope for complete cycle of compression. 1K subscribers Subscribed Dec 11, 2013 · I've worked on a number of motors and find that after numerous pulls on the starter they get harder and harder to turn over. Here’s what to do if your engine won't kickstart! Why won’t my outboard engine turn over? There are multiple reasons why your engine won't turn over. To clean, remove the flywheel cover and engine cowling, and then undo the fuel If the motor angle is correct but the over-rev limiter stays activated, stop The anode is a sacrificial material which helps to protect the outboard motor from corrosion. You can do all three so that you can eliminate the possible reasons and you will know the sole reason for the problem. 75 turns out from fully seated. Dec 28, 2023 · When your outboard motor fails to start or unexpectedly turns off, the causes could be the ignition switch, battery, and fuel filter problems. Apr 20, 2023 · Your motor’s flywheel ensures that power from your motor is transferred smoothly, particularly during engine starting, idling and gear changes. If you turn the key and the engine won't start but other components are working, check the gear shift to ensure it's solidly in neutral, as most outboards will not crank with the engine in gear. Likewise, the engine connection kit connects the outboard engine with the steering cable. No motor is perfect, but this Customer: 1990 Mercury 9. This reputation is due to its 1. In this video we look at how to diagnose and outboard motor that won't crank or turn over. Jul 12, 2007 · Re: Motor slightly turns then stops Hey newscout I'm confused. No Start to the Engine An … May 17, 2024 · If your outboard motor is experiencing issues, it’s essential to follow the recommended troubleshooting steps to identify and resolve the root cause effectively. Or if the motor is running fast on the boat, and the motor itself hits a solid object, like a rock or log, where the motor stops, but the heavy rotating flywheel keeps going, shearing off this key. Starting with full choke and the throttle turn to the start Mar 5, 2012 · Re: Motor Shuts Off While Running Shutting off a couple of times when first run leads me to ask how warm is the motor when this occurs? If the motor isn't up to full temp then a 'cold' motor requires more fuel to carry a load. Customer: my 1990 115 mercury 2 stroke outboard the flywheel rotates by hand about 330 degrees and stops either way any ideas Answered by Jeff G. If it turns then you have a prob in the lower. What is the year and horsepower of your Mercury outboard? Customer: Don't know year, 8 hp Mechanic's Assistant: No problem, thanks for letting me know it's an 8 hp model. I have the lower unit off at the moment. Conclusion Understanding how to diagnose and address common boat engine problems empowers you to handle many issues that arise on the water. Once the crankshaft spins, the combustion begins and will continue to run the engine without the need for a starter. The starter turns, bendix runs up the shaft, fully engages the flywheel, then stops. That would be an easy fix. Jan 16, 2013 · Re: Will not start, flywheel turns slow with starter. As removing the flywheel involves removing the transmission or engine, it is best to seek the help of a mechanic instead of doing it yourself. This is due to the fact that that the lubrication of the piston is diminishing. Tach goes crazy up and down and engine really hesitates, and dies. A new Mercury starter is around $500 Cdn online. Even with low amperage, the starter would turn the flywheel some. In this video I tune an outboard to stop it stalling and idle. i can then manually turn the flywheel back the opposite direction 3/4 way round and it locks very suddenly. When the starter is running, the starter gear is pushed into contact with the flywheel allowing it to turn over the engine. How to Troubleshoot a Mercury Outboard Motor? New mercury 150 turn the key the starter stays engaged to the flywheel it only turns about a half an inch stops and Jan 23, 2002 · Purchased a 1982 35HP Johnson which has not been used for several years. Starter spins up, engages the flywheel and the flywheel barely moves. If the engine is locked up, it won't Nov 13, 2020 · Starter engages onto the flywheel but won't spin the engine enough to start it. Here are several common causes and a brief description of how Jun 10, 2023 · The Mercury Optimax 115 is a popular outboard motor that is known for its reliability, fuel efficiency, and outstanding performance. That is typically a bad thing. Milky lower unit fluid suggests water contamination, causing corrosion or bearing damage. It’s a bit tough to move by hand, but I can. Does your engine run for a bit and then dies? Nov 1, 2023 · At that point, a rod with an attached pinion is pushed out and engages the engine’s flywheel. In other words, the e- Jun 11, 2012 · The engine was running fine for about 45 min then made terrible noise grinding and stopped. When the plugs are out everything turns freely. Step 2 Check the fuel lines connecting the outboard motor to the fuel tank. Does this mean the issue is in the engine block, or could it still be a lower unit issue? Install the idle adjustment needle screw on the carb fully screwed in gently then 1. That solenoid has contacts inside. And a side note the engine ran pretty good, before I pulled it out. qoa. Never saw that before. In this article, we delve into this common and vexing issue. Have you changed the LU oil? Feb 20, 2025 · Troubleshoot and Fix Common Johnson Outboard Issues Johnson outboards are known for their reliability, but like any engine, they can experience issues over time. <br /><br />Then remove prop shaft and remove pinion nut and let lower unit drop from drive shaft. the motor pauses for about 5 seconds then rotates again. If the flywheel won't turn then we have a seized engine. Sometimes it starts back up, but I usually have to wait for 15 minutes for it to cool down, then it will start and I can run it at idle to get home. It never goes down even when we are not trying to start the motor. Just weird that it spins when I turn key, but, when the gear gets up to the flywheel, it just stops - though I can hear the starter motor "trying" to turn the flywheel. Wondering what potential problems are most common for 115HP Yamaha 4-Stroke and how to solve them? This quick guide will cover all of the pros and cons of these motors, common problems, troubleshooting and how-to’s for fixing them. I can turn the engine by hand by grabbing the flywheel and turning it. This mostly involves setting the idle mixture screw and idle speed screw. This guide to troubleshooting why your Yamaha outboard motor stopped working addresses issues common to the majority of Yamaha outboard models. The motor sounds great otherwise and would def be worth the $60 investment for new gaskets Apr 14, 2005 · Starter motor turns engine for 5sec then disengages from engine but still spins - Ignition - Jensen Healey & Jensen GT Tech - Sep 28, 2013 · Re: 115 Yamaha 4 stroke (2004) will not turn over even with new battery. Shift linkage appears okay. Over time, the pinion gears can be susceptible to wear and tear, becoming difficult to engage the flywheel properly. Stuck Flywheel How to Remove Stuck Flywheel on Outboard Motor T-Mikes Vintage Outboards Restoration 18. The starter also has trouble and will turn and then hang up and then turn. It didnt come to a sudden stop or anything. They are pretty simple engines, and few things can go wrong for well-cared-for motors. Just found it sometimes is quicker to make sure you actually have a free turning engine before chasing electrical problems. Apr 29, 2003 · Re: 99 225 mercury, can turn flywheel one turn then it stops HELP! I have not checked the intake, I will check that next and look for missing screws, bolts, nuts etc. could only turn 3/4 around manually. Does anyone know how I can fix this problem? Feb 20, 2014 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. That results in hard to turn. That is IF you can turn the engine over by the flywheel. I think you said you just changed the starter so slacken the bolts to the starter and see if that makes a difference. Does this sound Apr 19, 2013 · This concerns the starter on a 250HP OX66 Saltwater seriesII 1995 outboard. Had a certified Yamaha repair stator and broken crank key. This guide covers the most common Johnson outboard problems and how to resolve them. Aug 30, 2024 · Make sure the shoulder bolts are all fully embedded and flush for even tension or threads in the flywheel can strip. How Do You Fix A Starter That Won’t Engage? Recharge or replace the battery Sep 21, 2021 · The starter motor is responsible for starting the engine by applying a turning force to the engine flywheel. But everyone has an occasional snafu that requires some troubleshooting. Mar 14, 2014 · Re: Starter barely turns engine over, tried the usual culprits. This cannot happen with a fixed jet carb, the motor can cough or sneeze and die. 78 Johnson 115 How did you connect the ground while jumping? Have you tied it with plugs out? Aug 18, 2024 · I start the boat, run around for a while, stop to fish for an hour plus, and when I try to start the motor, it turns over and maybe coughs but will not start. First I bypassed the solenoid (jumper on "out" positive post) and it engaged the flywheel, but could barely turn over the engine. Have a Johnson outboard problem to share? Johnson outboard engine problems and issues? need someone to try and help resolve them? Then use this forum and maybe someone can help. However, like any mechanical piece of equipment, there might be problems … Mercury 40 HP 2 Stroke Problems Mar 21, 2024 · The rotary helm is responsible for converting the steering wheel rotatory movement into push-pull action on the steering cable, which then moves the rudder accordingly. Along with proper instructions, it only takes your attention, patience, and a bit of dedication. Cleaned connectors and oiled valves. We recommend that you locate or download the repair manual for your specific engine for more information, and consult a certified mechanic over any uncertainties. Anytime you have a problem with an outboard, always check the owner’s manual for tips and tricks. If your starter spins but does not engage the flywheel, it is likely due to a faulty starter solenoid or a worn-out starter gear. Fortunately, many can be fixed with quick and easy solutions. When it is put into neutral the rod is lowered and stops the clutch spring. Bolted to the crankshaft at the rear of the engine, the flywheel stores intermittent rotational energy to boost power as needed. When a boat motor wont start, it may actually be a simple problem or an overlooked detail. Jerry The starter is a device that cranks the engine to initiate operation with its own power. The fuel goes through a chemical reaction producing ethanol, which will prevent the engine from running. in 4 mins 13 years ago Jun 24, 2024 · A malfunctioning stator in your outboard engine can turn your idyllic boating day into a frustrating ordeal. Common causes are being in gear, the battery being flat, fuses being blown or bad electrical connections May 30, 2017 · The solenoid pushes a little gadget that engages with the flywheel / flex plate, so that when the starter spins, it turns the motor. One time it did spin the engine for at least 15-20 seconds but it would not do it again after that. By disconnecting low voltage wire from coil for example. In this blog post, we’ll explore common problems associated with Mercury 2-stroke outboard engines and provide detailed, step-by-step solutions for fixing them Jul 11, 2010 · Re: flywheel not turning What engine? Pull the plugs, see if you get better results. Some maintenance tasks, like removing the powerhead from your motor, may require you to remove the flywheel as a first step. Jul 28, 2009 · The flywheel won't turn more than 1/4 inch either way and it won't seem to shift into reverse. But keep in mind that there could be more than one cause for why a Mercury outboard fails to start up. The starter will turn the flywheel about 3 or 4 teeth. How do I stop the flywheel from spinning while torquing the bolts? My repair manual says I should buy a special tool to do it, but I don't want to buy an expensive tool that I'll rarely use. The shock absorber in the lower unit is broken. Oct 28, 2013 · Re: Flywheel not turning So let me get this correctly, with all plugs removed and shift gear in neutral the flywheel will not turn even with a wrench on the shaft's nut? Or even with the starter motor? Obviously the next step is to open and inspect starting with the head and then the intakes. If you just hear a whirring sound like the starter motor is spinning without affecting the motor, then the solenoid is either broken, or there's a wiring issue on the starter itself. Check the voltage on the red and white Ignition wires at the CD Unit. There may also be dirt blocking the filter, lines or carburettor. Hi y’all I’ve got a 86 Mariner outboard 90hp and last year when it was the running I had heard a bang coming from the engine when I checked I noticed that the starter had shot back up and caught the flywheel. Shifts okay - prop free turns when in neutral - removed spark plugs I can see piston moving up and down as I turn fly wheel. Here’s what I’ve tried: 1 removed plugs and turned by hand (easier but still tough) Jul 23, 2022 · The Yamaha 115 4 stroke outboard motor model serves with outstanding performance, reliability, and power. then oil leaked from above front drive pulley's onto floor Mechanic's Assistant: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean? Customer: yes Mechanic's Assistant: Do you plan on doing the work yourself? Customer: yes Mechanic's Assistant: Anything Aug 24, 2005 · Re: Flywheel stuck On removeing drive shaft if you cant even get an opening wide enough to slide saw blade into crack. We’ll talk about ten typical outboard motor issues in this article, along with solutions. 9 HP 2 stroke - fly wheel does not turn 360 - hand turn fly wheel about 350 degree then stops and can turn back about the same until stops. While some outboard motor issues can be resolved quickly, others call for more involved fixes or expert assistance. The starter will engage the flywheel and turns it about two gear teeth than stops. Maybe you got two plug wires crossed for example. 0L of 1985 vintage, and the reason for asking is I can't get her to start! I pulled the heads and could turn the flywheel clockwise and see all the pistons cycle. I removed it and tested the flywheel to see that it turns fine but Jan 21, 2023 · If you go out and try to start your boat but notice it gives one single click or multiple clicks and never starts, then we have a fix for you. If I hold the key it will continue to make a full turn and stop. Diagnosing a flooded engine requires clearing excess fuel and properly Feb 19, 2011 · I think the gear looks good. It will turn in forward and reverse while moving flywheel, but again wont allow flywheel to fully rotate. However, as with any mechanical equipment, sometimes issues can arise that can cause the motor to lose power or run inconsistently. Then, nothing happens. Why spend a good bit of time cleaning connections and replacing wires then find you have a locked up engine. It moves about 3/4 of a turn then stops. I can pull the recoil easily. We had it working for about a day. A Guide From Eric's Outboard Marine Service in Miami, Florida It’s no secret that Yamaha offers one of the most impressive 4-stroke outboard motor lineups on the market. Nov 19, 2009 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. There are five major things Starter spins but does not engage flywheel. Spark May 5, 2020 · I have a johnson 115hp outboard motor. Using electric starter, motor also stops just before full compression (TDC) on both cylinders. A flywheel that turns only one rotation may indicate internal mechanical binding or a seized component. Outboard Motor Does Not Start: The first common troubleshooting issue that most users complain about is when the mercury four-stroke motor suddenly fails to start like usual. For reference, these repair instructions pertain to certain electronic fuel injection Suzuki outboard motors experiencing the following scenario: Dec 6, 2014 · Sometimes I attempt to start it cold and it kicks over immediately. Sep 7, 2016 · Ask the experts on our Yamaha Outboard Forum for repair issues, diagnosing problems, links to diagrams, suggestions on buying parts and more. Persistent vibrations can place unnecessary stress on the transom and other components, leading to structural damage or even failure. <br /><br />Good Luck! Jun 23, 2025 · A well-maintained outboard should run smoothly without excessive vibrations. Had someone turn the key while I watched. Our Shut down the engine if possible, deploy appropriate safety equipment, and contact emergency services if necessary. Always refer to the Owner’s manual for clarification and more detail on the processes shown in this document. Or just timing adjusted too early. <br /><br />Then use slide hammer and heat to remover from crank shaft splines. Mar 28, 2015 · I tried turning on the boat today, but the flywheel seems to be stuck and therfore engine didn't start. 45 volts) but when the starter motor engages the flywheel it does not turn it fast enough to satrt the motor. They engage the flywheel and fires up a vehicle’s engine once the starter turns. Outboard not firing up? Here are some tips for troubleshooting common problems with an outboard motor that won't start. If it can be turned then the issue is with starter or wiring to starter. As the starter motor turns it physically cycles the engine over, this helps to draw in air to fix with the fuel delivered by the fuel injectors to create the necessary fuel/air mixture to support internal combustion. Known for their reliability and performance, these engines have become a popular choice for boating enthusiasts worldwide. The tech swears he torqed bolt down to specs. One such issue is when an outboard motor runs fine initially but then suddenly loses power while in operation. I stopped it and found the bolt on crank was getting loose. It will go back 3/4 of a turn before stopping again. Generally, the Yamaha 115 4-Stroke is one of the most reliable, versatile, and efficient outboards available for mid-range boats. Disconnect the Mercury Outboard switch and reset, if the engine fires, replace the Mercury Outboard switch. flywheel would not spin to start mower again. In this article, I will be walking you through the most common problems that you might experience with the Evinrude outboard motors in the future. The starter solenoid is Dec 18, 2013 · Re: Why does my outboard start and runs for 1 minute then dies/shuts off? I removed the drain plug from the fuel bowls and very little fuel drains out. Customer: mower stopped. EDIT: After thinking about it for a minute, I know what your problem more than likely is. May 23, 2008 · Re: outboard will not rotate 360 degrees Before you pull your motor apart,drop the LU and then try to turn the engine. There are rare times it can be involved, but most of the time you can have your boat up and running in a jiffy! Why Your Boat Clicks And Won’t Start Here are the list of reasons why your One is a faulty safety switch, which “thinks” the engine is in gear even when it's in neutral. Nov 24, 2019 · Engine won't start? Starts, then dies? Overheats?Sounds like your pinion/bendix gear is not reliably extending fully to engage the flywheel. each time i can move the flywheel clockwise and anti clockwise and each case May 24, 2009 · My two newbie questions: 1. info This troubleshooting guide is for reference purposes and supplements the owner’s manual that came with your outboard motor. 50:1 plus water infiltration into the powerhead from a leaking seal is death. By familiarizing yourself with the troubleshooting guide Customer: When pull starting it turns a little then stops Mechanic's Assistant: Thanks for sharing that detail. Not sure what else to do. If your engine begins shaking or vibrating abnormally, it could be due to a damaged propeller, misaligned engine, or worn-out motor mounts. Some users have also claimed that sometimes the motor starts after several tries but quickly We would like to show you a description here but the site won’t allow us. Jul 23, 2022 · Evinrude E Tec outboard motors are one of the most reliable and durable available outboard engine options. Jul 22, 2021 · I am at the point in my rebuild where I am reinstalling the flywheel. When it comes to maintaining and troubleshooting your Yamaha outboard motor, it’s crucial to have a comprehensive understanding of potential problems and their solutions. Why doesnt the powerhead turn now? What am I missing??? Key Takeaways Troubleshooting a 2-stroke outboard motor that won’t start often begins with checking spark plugs, fuel quality, and the safety lanyard or kill switch for proper function. Nov 30, 2009 · Re: Starter spins but won't engage flywheel That's the starter drive or "bendix" as it's known. Aug 15, 2015 · After looking at it more it looks like the spindle shaft off the starter is engaging correctly though it does not have enough power to turn the flywheel fast enough along with the fact that it is not returning to the starter when you stop turning the key. The electric starter can spin the flywheel easily. The prop spins the flywheel until it hits that spot and stops, then I can's turn prop anymore. As long as you can turn it freely by hand with the motor off and in neutral, should not be a problem, and also may clear up after you've run the motor a bit. Now when I try to turn the flywheel around I can get maybe half a turn before it gets stuck. The fact that it is reading Jul 14, 2012 · Re: outboard starts, goes WOT, then dies, and wont restart Float level should be near perfectly level with the carb held upside down. Popped the flywheel off and found this screw bolt lodged in the stator. The length of time an engine runs after starting can indicate if the problem comes from the carburetor or the electrical system. When we go to start the engine the bendix gear will spin the flywheel slowly a few times and then stop. How certain are you that the starter is the problem and not the battery, cables, switch or solednoid? If it is the starter a rebuild shop can rebuild the one you have. on one bowl a few drops and the other less than 1 oz. However, like any mechanical device, they can occasionally encounter issues and require troubleshooting. Feb 9, 2014 · Re: Out of Tricks, very stuck flywheel I am going into the garage and try again, this time while prying up on the flywheel. Are you saying that your motor won't turn or are you saying that your starter isn't turning? Did you try what Clams said and spin the motor by hand using the flywheel? If the motor spins through a few revolutions by hand then I would tend to think you're starter is shot. For outboard repair i Oct 7, 2020 · Outboard motors are incredibly reliable. May 30, 2023 · Mercury 2-stroke outboard motors are highly regarded in the boating world for their reliability, performance, and efficiency. Engine has both ropestart and added electric start modes. This is a stressful situation. By turning the key, the starter begins spinning and then in turn, spins the engine over. Have you rebuilt the fuel pump? Remember this motor is a 2 stroke, just like a weed-wacker or chain saw, it likes a lot of choke to initially fire, then needs a fat mixture until it warms up a bit. In this blog post, we will explore some common problems with the Mercury Optimax 115 and provide solutions to help you troubleshoot and maintain … Mercury Optimax 115 Problems: Common Issues The Yamaha F115 stands out as an exceptional 4-stroke outboard motor, renowned for its reliability, durability, and outstanding performance. I tried turning the motor over by turning the flywheel by hand. I also pulled the Jun 1, 2023 · When working correctly, these engines provide an enjoyable and hassle-free boating experience. Flywheel would only turn about 1/3 rotation then stop. As soon as I put the plugs back in, it is very difficult to pull. I have had the battery load tested and it is good. That, in turn, spins the crankshaft since the flywheel is bolted and fixed to the crankshaft. Customer: i turn the key to my mariner 115hp 6 cylinder inline outboard engine, the flywheel turns roughly 3/4 way round then locks. When i try to start it it turns over for a second then stops and the starter just spins but not the starter gear. 8-liter displacement and innovative DOHC/SOHC designs featuring four valves per cylinder, contributing to its lightweight structure and exceptional Feb 19, 2018 · Can you rotate the flywheel by hand? Put a socket on the flywheel nut and try to rotate if you cant do it by hand. Common Reasons Why Boat Engines Won’t Start Whether you’re using an inboard boat motor or a 2 stroke outboard motor, some problems can arise. If that still doesnt work then the engine is seized. There are three common causes of this: (most common) Dried up grease or dirt on the threads of the starter shaft and the pinion/bendix Failing overrunning/one-way clutch in the bendix Damage to the threads on the shaft or bendix (not common) There's a Jan 22, 2017 · Electric starter system So your Johnson outboard will not fire up, but does the engine turn over with continued cranking? If the answer is yes, does the flywheel rotate? If the flywheel does not rotate (or turns slowly) check the battery’s charging condition or the terminals for corrosion or a loose connection. No mechanical skills needed! Aug 21, 2012 · I had to replace the flywheel because the plastic one that came on the motor started cracking and messing up the starter gear. So, give the throttle a jiggle, then try holding the key on while shifting the throttle through neutral. If not then you have the LU off and can continue to work on the top. Aug 28, 2016 · When you read the battery voltage, was that while trying to start the engine or just sitting there? If that was the voltage while starting the engine, then you could have either a bad starter solenoid, cable connections, starter, or ground connection. The good news, a boat that is clicking is often an easy fix. I replaced the flywheel and now when I turn the key the motor turns over a full turn and then stops. To get into details about each of these parts would be another article. 5 hp Fly wheel wont turn I cannot get the motor to turn over at all since the flywheel wont budge. Apr 25, 2023 · I am trying to resurrect this motor and have run into a problem. Sep 13, 2024 · In conclusion, troubleshooting a 2-stroke outboard motor that won't start involves checking the basics, the fuel system, the ignition system, and the compression system. Nov 20, 2024 · Nope, battery fine. . Jul 18, 2009 · I have a 1990 evirude/johnson 140 I installed a new battery,new cables,I checked all connections and their clean. Tried removing spark plugs to stop compression and still would get stuck. However, just like any other top brand’s products, there are some common technical issues that users may experience while using the Suzuki 115 four-stroke outboards. If any breaks or leakages are found, immediately stop use of the outboard motor and take it to the shop for repairs. I am sorry about the locked engine. Put in water and ran fine for 10 min then started making noise, little vibration. I have power to the starter motor (12. To begin the first cycle, the starter motor is required. Carburetor Linkages: Check the carburetor throttle butterfly linkages that lead from one carburetor to the another to We would like to show you a description here but the site won’t allow us. If gummy or watery fuel is found, have the fuel tank drained by a Yamaha dealer to remove any contaminated gasoline. This troubleshooting guide is for reference purposes and supplements the owner’s manual that came with your outboard motor. When the outboard is shifted into forward the crankshaft rod raises. It turns enough for the pistons, rods and crank to move so it is not seized up. Jun 4, 2023 · The world of outboard engines is vast and filled with numerous brands and models, but one that notably stands out is the Mercury 40 HP 2-stroke engine. May 8, 2016 · What engine is it? I have a Yamaha 25 HP on my Shetland and, in an emergency I can whip the cover of the flywheel and use pull rope if need be. Proper warm up on a carbed motor is also important to prevent a 'cold sieze' condition Nov 8, 2023 · Yamaha is a Japanese company that started developing and building outboard motors in 1958. Did the engine overheat? DId you run non-oil mix gas? Does the shifter work? Can you turn the prop by hand with the engine in neutral? Oct 5, 2018 · (Hesitation/Bogging On Applying Throttle) (Joe Reeves) This is a common problem and is usually caused by a sticking timer base under the flywheel or fouled, clogged carburetors, however… also check the carburetor linkages, compression, spark, and the timer base as follows. again not a seize but a sudden lock. An outboard motor that does not turn over is a common phrase used by boat owners when their engine turns on but runs poorly after it fires up. The It happens to most of us! You jump on a boat, turn the battery switch on and hit the key switch. In some cases, the engine may crank slowly but still fails to start over. For boat enthusiasts, outboard motors are a must, but they can be problematic if not properly maintained. However, like any mechanical device, it is not immune to issues. Hence the dreadful screeching noise. 96 150 johnson faststrike,battery is good all connections are good getting Nov 5, 2009 · When that motor is NOT running it will be in FORWARD gear !-----Lower unit if in good condition kicks into nuetral after the starter turns the flywheel ONE TURN. can turn it by hand easily when the plugs are out, quite a bit harder when the plugs are in. Dec 16, 2011 · Engine turns halfway and locks up? Discussion in ' The Hokey Ass Message Board ' started by UnIOnViLLEHauNT, Dec 16, 2011. Test by taking spark off. If the flywheel doesn't respond to your polite attempts to remove it, you have a problem known as a "stuck flywheel. Should I be able to turn it both directions? The engine is a Merc 150 V6 2. perfect-memory. This will help us understand why your boat motor is stalling. " Removing a stuck flywheel calls for certain tools, most of which Apr 4, 2019 · I decided to use jumper cables from my truck battery (truck not running). I have a 2 battery setup with a Perko Jan 21, 2017 · This troubleshooting guide will help you diagnoses a Mercury outboard engine that won’t start. Make sure your throttle cams line up and start line in the cam is in line with the throttle arm center. Apr 13, 2008 · I have a 70 hp evinrude outboard. Knowing how to troubleshoot and fix these common problems can save you time and money. It helps to know what to look at. May 24, 2004 · Re: Starter motor won't turn flywheel i jsut went down. It certainly does sound like it's electrical and like a "normal" engine that could be a faulty inginition switch, a faulty isolator switch, a faulty starter motor or a faulty starter solenoid or even a duff starter battery. Most motor manuals include a section on troubleshooting common […] Apr 17, 2012 · Re: 03 Johnson 3. Battery is good. Once you do the test that Lone Duck suggests: if the starter turns the engine over normally-it could be the starter solenoid. Evinrude e-tec cranks but won’t start refers to when an Evinrude outboard boat motor’s crankshaft turns but does not start the engine. Sep 17, 2023 · Suddenly, your outboard motor sputters, loses power, and leaves you adrift. This vital component generates the electricity needed for ignition, so a bad one can leave your engine sputtering, stalling, or refusing to start at all. Oct 27, 2022 · Can’t get around Yamaha 350 outboard flywheel issues? Check this article to fix your vessel right away. Other times I turn the key and the starter engages the flywheel and stays stuck in the "up" position (engaged). There is absolutely no key in the crankshaft in the lower unit. Then if it stops doing it it's related to ignition timing. On the other hand, if the starter turns slowly after that test, the brushes inside could be worn Jul 30, 2006 · Re: Shifting problem (prop spins in neutral) Your prop can turn, usually slowly, when in neutral due to friction and/or cold/thick oil between the propshaft and the gears. May 16, 2007 · Re: flywheel hard to turn 50:1 is not good for that motor. Dec 28, 2021 · So what can you do if your starter will engage but it does not turn your flywheel? Check your battery voltage, check for battery corrosion, and check your starter motor. Jul 12, 2012 · Tooth on tooth ouch,,, with the key off if you rotate the flywheel clockwise by hand that gear might fee up and drop back down to the starter. Ensuring fuel lines are intact and the carburetor is clean is essential to maintaining adequate fuel flow and preventing blockages. If i take out all 4 spark plugs the motor turns over and keeps turning Nov 1, 2011 · what is going on that when i go to start my motor, the starter engages and cranks , but after maybe 1-2 seconds it stops and you can hear it wind down. I also checked the primer bulb and it took several pumps for it to get hard. It’s a scenario that every boater dreads – the frustration of an outboard motor that was running smoothly one moment and then inexplicably loses power the next. oiifehwspwcdkvkdinyseipmroaudmzhekzpnvdsxhiesglgglbgtyqhhqjozhzmuffqluxvpacwopycjjay