How to check outboard charging system ) Found out everything on it is working like it should, except the charging system. I've read that special chargers are required for AGM. Don't forget the ground side of the wiring! Check your start battery wiring and connections for the same thing. They're all yellow wires (3 of them) coming from the stator connection. These components include: 1. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. 2, which means whatever measurements we get, we're going to subtract 0. Use a multi-meter set to DC Volts to check the voltage across the battery terminals. It appears to be good so I want to use it. Here is what I checked. its a simple 3 phase A/C stator that feeds another simple regulator/rectifier. Taking out the rotten wood on the 16' Starcraft Boat Transom. These components work together to convert the alternating current (AC) produced by the engine’s alternator into direct current (DC), which is then used to recharge the battery. This video shows the in depth process of how I added stater magnetic pickup to my 9. May 4, 2023 · Stuck with a boat battery which won't charge via the outboard engine? It could be your fusible link, in this video I'll show you how to test it, and replace Nov 2, 2007 · This is a 3-phase charging system - the stator has three separate coils of wire. Follow the Real Jul 9, 2015 · Hi Forum, I have a clamp-on amp meter. READ: How to test a Mercury outboard’s charging system. Check each of the three in a Ohm test on a multimeter. It is a 9 amp system on my outboard. " If you have numbers, you have continuity, and that specific coil is good. I am looking for the particular charging parameters for AGM, and how to compare that to the output of the boat motor charging system, which is unknown. If you have ignition problems or your battery doesn't charge it could be your stator. I do NOT keep service manuals at the house. Buy your multimeter on our sister site Partzilla here: https://www. Jul 7, 2012 · (And it also appeared to be having some charging problems. Engine idles and runs great, tach works. Testing My 1983 25 Hp Evinrude charging system voltage. The rectifier has been replaced. This is a good way to check the regulator/rectifier battery charging operation in the charging system. partzilla. Oct 13, 2020 · Dunno about your specific engine, but I’ve just done something very similar with my pull start DF20a & used a 20Ah Poover Lithium battery. I Apr 23, 2013 · The junker I bought is a 1985 20hp Evinrude. This video shows you how to check your outboard motor charging system or your automobile charging system with a multimeter. May 14, 2009 · Is it OK to run the motor knowing that it is not charging the starter battery? Is the battery needed for anything after startup? What part is likely broken, and how do you access it? Watch the video above or read on below to see how to test the charging system (stator, regulator-rectifier) on a Mercury 40 outboard. Charging coil system typically contains: CHARGING SYSTEM INSPECTION Jan 13, 2015 · First do check the voltage with a multi meter - never trust the gauges. Jan 4, 2015 · With the outboard off, a charged battery will show a voltage of slightly higher than 12 volts. Regular cleaning of the charging system with a soft brush or cloth can help prevent these issues. Where is the best spot to check current(amp) on my unregulated charging system? My motor is a 1988 Mercury 90hp 3 cylinder, 0B302485. Inspect the Components of a Mercury Outboard Charging System. The previous owner took the starter off but left the charging system. I do this for a living and have for longer than I care. As you increase rpms, you should see an increase in voltage, up to almost 15 volts. Watch the voltage reading on yo Here is the link for the multimeter i used. com, if you look up both outboard models, you find the following regarding the charging Jun 6, 2024 · 90 HP Mercury 2-Stroke. According to evinrude. Why would the system not try and bring the battery voltage up. Nov 29, 2016 · This is how to test and diagnose an outboard stator. The battery is not charging. 2. Charging System Check List: Turn the battery switch on, engine(s) off. amazon. With the outboard running at idle, you should see a slight increase in voltage. The 10 amp charging system can be checked with a good VOM that has up to 10 amp capability (Fluke 29,73,88, etc. Apr 2, 2012 · Suzuki Outboard Parts Forum; If this is your first visit, be sure to check out the FAQ by clicking the link above. Perform only step to verify that the lamp coil is functioning properly. Together, these components work to keep your car’s electrical system running smoothly and ensure the battery stays charged. It was a lot harder than i thought Nov 10, 2023 · Here are some tips for maintaining and caring for the Johnson outboard charging system: Keep the charging system clean. The only Ohm reading you need to see is "numbers. 9 murcury outboard and then used a generic $9 2 stage/phase rectifier/reg In in this video i fix my mercury charging system. During cranking, the battery voltage would drop to about 8 volts (bottom of the scale) on the installed voltmeter. com/INNOVA-3320-Auto-Ranging-Digital-Multimeter/dp/B000EVYGZA Testing the battery, the regulator rectifier and the stator is the best way to troubleshoot outboard charging and ignition system problems. If battery voltage is lower, charge the battery and recheck. What should I look for to remedy this issue? If you’re experiencing issues with your boat’s electrical system, you may be dealing with a bad alternator. Hard part is to make it fail when your checking it. I measured 21 volt AC off the stator with motor running, wires not connected to rectifier. Making sure that the engine is charging the battery is extremely quick and simple (depending on where the batteries are in your boat). I've been told that the problem is with a fuseable link wire. If OK, the problem is in the OEM’s system. 1 from it for a final reading. I have a NAPA Commercial AGM Battery BCI No. The system is an unregulated system, which I also want to convert. Sep 3, 2023 · The Mercury outboard motor has a sophisticated charging system, comprising the alternator, regulator, and the battery. In a Mercury outboard charging system, there are several key components that work together to keep the battery charged and the electrical system running smoothly. Do you the capability to use a volt-ohm Jun 21, 2020 · It's This Old Outboard. its firly simple. Make sure the reading is between 12 - 13 volts DC. Aug 3, 2016 · Didn't know the system operated differently than a car system. If an outboard motor is getting fuel and air, but has trouble starting or misfires once it's running, the problem could lie with the ignition system. 24 525 A Glass Mat, my outboard motor has charging capability. The charging system in your vehicle is made up of three main components: the alternator, the voltage regulator, and the battery. com/product/aftermarket/2Y27-LANG-TOOLS-13809?utm_source=youtube&utm_medium=vide In our Honda outboard’s case, the reading when putting the leads together bounces between 0. Stator: The stator is a stationary component that is located inside the outboard motor’s flywheel. This is probably one of the main questions that will come up when talking about outboard alternators and stators. I'm all about learning. I only have a rectifier, stator and battery for my charging system. All connections should be tight and corrosion free. Fortunately, there are a few steps you can take to diagnose an alternator How To Test To See If Your Battery Is Charging. 7V. CHARGING SYSTEM TROUBLESHOOTING Lamp coil system typically contains: LAMP COIL SYSTEM INSPECTION •Lamp coil (Honda) •Rectifier (OEM) •Load(s) (OEM) 1. Model 90 ELPTO. E20ELCOS. Certainly your problem could be intermittent and a rectifier failing may not charge sometimes and overcharge others. Dirt, dust, and debris can accumulate on the charging system, leading to problems with the electrical connections. First thing to check is the battery/switch/engine cable connections ground on the engine included. Any readings out of these specs indicates a problem with the charge system. I did all the tests in the repair manual for the charging system. ). One thing still seems odd to me. 1 and 0. Alternators are responsible for powering the boat’s electrical system while the engine is running, and when they fail, it can lead to a number of problems. The battery is fussy about its charging voltage, so I added a Buck regulator between the engine & battery to maintain the charging V at 12. . Anyone know anything about the charging system on this outboard, and what would cause this wire to go out? Jul 28, 2010 · I have an 1988 88 special 88hp evinrude outboard. It appears that something on the charging system isn’t working as my voltage does not increase on my voltmeter with the engine running. https://www. This is the quicke May 21, 2016 · Check the main engine harness plastic connectors - disconnect them from each other and look at the pins/sockets and snap them back together. Aug 8, 2015 · it works about like every other outboard with a flywheel charging system. vqb ulv rlxfu jlevvc jepwcbc xupgfg afnhc fsly jqegj coglkic