Replacing Light Bulbs. what kind of accesories (like hotter coils) are you running? Cylinders #1 and #2 have spark, but will not burn. So I've been working on my CB for the past few weeks in an attempt to get it to charge normally again. The stator needs to be replaced. That means, that I have to charge the battery fully to use it again. You will receive a reminder when the product becomes available Either way, testing is pretty much the same. I HAVE A 81 HONDA CB 750. October 14, 2022, 04:29:16 AM. Can someone help me? Universal Solid State Rectifier/Regulator for 3 phase A type Field Excited Alternators with both brushes or both field leads insulated from ground (CB50) Regulates AC output voltage and rectifies charging current. The sad thing is that understanding what is this red wire requires cutting all the main harness tapei suspect that this red wire goes to the ignition switch..i should.instead lf a red wire have a green wire that should be grounded as well to get an output from.the alternator if i'm right. I ride a 1980 Honda CB750 Custom. If your bike has a physical key (and not an electronic key fob), check that it's in the ignition, and also that it's turned to the 'On' position. Description. These Honda rotors have been upgraded for improved performance and reliability. Battery Stores regulated DC current. Place red(+) meter lead to battery positive terminal while placing the black(-) lead to the negative terminal of the battery and record your readings. It will instantly start draining the battery. Gauge is Bright High Quality Chrome plated and clamps onto 7/8" Bars and can be easily wired into any point in the system (before a switched load is best). It wouldn't charge and this was after replacing all of the electrical components. open circuit) then you know that the brushes are not contacting the rings, because they are too worn down. I need to look somewhere else to find my issue. TESTING REGULATOR FUNCTION AT THE BATTERY. Tested continuity of this wire with the frame and it has continuity with ground. 10V DC sounds like the voltage between those two wires that my bike has. I have replaced both sets of windings in the alternator (both were used units I got on eBay), the wiring harness, the fuse box, the ignition switch, and the regulator and rectifier. They are broke down in chapters for easier downloading. We've updated our prices to Euro for your shopping convenience. 22v at idle up . The Charge Monitor allows easy determination of the operational state of the charging system with a quick glance at the indicator LED's. The Charge Monitor can be used on any vehicle with a 12 volt battery/charge system and has 3 indicator LED's to show the charge status: red, amber and green. Dan. These readings should be closely in range of each other. Thisrocks. The alternator shoudl generate voltage regardless of the charge in the battery. Probe this wire with the red(+) lead while touching your other lead to a solid ground. Content on hondatwins.net is generated by its users. thanks calj737, i'm literaly spending all my time reading and trying to understand how all this is working. The Fora platform includes forum software by XenForo. Rick's Electric Brand Lithium Ion Battery Compatible Rectifier-Regulator. Your right about the holder. Battery Charging. check the field coil and stator coils resistance first. Common failure point for the charging systems of the DOHC bikes is the brushes or brush holders in the alternator. Motorcycle Honda Nighthawk CB 750 1991 Service Manual. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. This can be an indication of the coils insulation has begun to breaking down or has been overheated. I'm running out of ideas. (318 pages) Motorcycle Honda CB750F2 Owner's Manual. Never been laid down or anything of that sort. At 4K RPM it gets about 14.4 volts. In which case the stator has begun to break down or is bad. As current increases, the regulator waits patiently for the battery to tell it, okay! The "proper" way to test a charging system is to use a two meter test. Any insights would be greatly appreciated. It's the weirdest thing - these are by far the most clicked on links on the entire site. Shows Voltage of your alternator rising and falling with RPM and gives a clear indication of your charging systems normal operation and early warning of problems. I started having issues with it last year and since then I have replaced the voltage rectifier, the rotor, the stator generator, the carbon brushes and The battery. stop losing sleep!just check those resistances. ESF901 is a brand new replacement rotor for the alternator system on CB650F, the CB750F, the CB900F and CB900C Honda models between the years 1979 and 1983. . To accomplish this switch, the rectifier is made up of diodes. Instructions not included. I use these almost everyday Im on the job. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB750 Owner's Manual. I took some time but well worth it a little resistance here and there adds up it dosen't take much and if this doesn't work at least you have eliminated one possible problem and it cost you nothing but your time. Here is a video explaining this procedure. If it doesn't then you might have to start tracing physically. Honda CB750'S Also they have some really awesome moderators there. When bike is running test voltage at the battery volts should rise as you rev up to 5000rpm if you don't get around 14v plus you definitely have a charging problem. My CB 750 is not charging my battery while riding. Generally anything below 8mm is an indication of a worn brush. with insulated leads & 1pc. With the bike running, test all three for AC voltage with a multimeter. replaced the OEM rectifier and regulator. [] the key on giving you battery voltage? I've got a new set, but I may have to solder the dog legged one to make it work. Designed with a lower voltage set point to work with lithium ion batteries only. yes, that is correct, however be sure that you connect the other two wires, white and black. Anyway the DOHC CB 750s are known for really bad electrics. . You are using an out of date browser. LED Charging system indicator Gauge. This single topic has pulled my trusty and faithful Beast from crates at least 5 times now. '74 "Big Bang" Honda 750K [836]..'71 Honda 750K project..'76 Honda 550F..K3 Park Racer!and a Bomber!plus plus plus Have you looked at your bike's color diagram? After installing, I had a constant voltage @ 14v. I'm having the same problem.. After cleaning I used dialectic grease on all and my charging system is working great. Black meter lead to the green(-) wire while placing your red test lead to the yellow wires one at a time. Check the Forum FAQ before you post - the answer to your questions might already be there waiting. You repeat this three times two check all three wires. Fuel on, any combination of carbs 2, 3, 4 will bleed gas endlessly. non insulated OEM Ref. 1. Head Light Beam Adjustment. Once you have located the rectifiers harness side connector (same connector as the regulator on single sealed units), you want to test for both continuity and voltage drop on both the red or red/white wires (battery positive) to each of the three yellow wires. 2. TWELVE TESTS?! Dynatek Charge Monitor. *Results: Since this wire needs a external signal. 13.5 amps and are prone to be even lower with old wires and poor connections. Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier. The Real Housewives of Atlanta The Bachelor Sister Wives 90 Day Fiance Wife Swap The Amazing Race Australia Married at First Sight The Real Housewives of Dallas My 600-lb Life Last Week Tonight with John Oliver 1981 CB750K (a bunch of parts in boxes) Tim Administrator. I really hope mine isn't. yeah i just did that too. Stop Light Switch Adjustment. Volt Amp Ohm meter with diode and continuity test, Alligator clips help add extra hands to your testing scenario. Good luck, old wiring sure is a treat. Login with username, password and session length. *Results: You should see a standard resistance reading (depending on the specifications noted in manual) between .001 up to .9 . So i still don't know if the lack of green, ground, in my wires plug going to the rectifier / regulator unit, would prevent the alternator from delivering voltage. You are using an out of date browser. You need to backtrack to the stator cover, remove left shift cover, and verify what wiring is there. I believe that bike is one of the early line of DOHC fours. Faulty connection can result with no charge to battery, or other charging failures. Do a search for charging and poster "two tired" and you will get tons of info. Motorcycle Honda CB750 Owners Workshop Manual. A forum community dedicated to all motorcycle owners and enthusiasts. Place your meters black (-) lead to a solid ground. The stator needs to be replaced. His solid state regulator/recifier assy. 3. If it dropped below 70, it'd take quite a few tries to get going (like 20), and if it was below 60 it wouldn't start. It may not display this or other websites correctly. Come join the discussion about performance, engine builds, classifieds, modifications, troubleshooting, maintenance, and more! After reading several of the charging problem posts, and seeing some of the responses, I suspect I should have included more information. Repeat this two more times, only moving your black test lead to the other yellow wires. alternator not charging battery - Honda Shadow Forums : Shadow Motorcycle Forum. BIKE WON'T HOLD 13/14 VOLTS. The 1st was a '78 SOHC. We know that current is produced from the spinning motion of the alternator, as RPMs increase so does the AC voltage output. Ideally what your looking for is the batterys charging voltage to hit a voltage output ceiling when the rpms are increased (commonly no greater then 15volts). For a better experience, please enable JavaScript in your browser before proceeding. It's a PITA trying to deal with this system. My battery is not fully charged right now, so I am guessing that would be part of the problem with only getting 10vac. I have an 82 750sc and it is driving me nuts. 3. Now reverse your leads and retest in the same manner as before. Corroded / loose / damaged wiring is a very common cause for charging system issues, make sure all connections are clean and secure. Here is a link to a CB 750 forum that covers the DOHC CB 750s. From the main harness, i have the green, white and black as single wires that would go to the regulator then i have my big plug that should go to the rectifier with 3 yellow, 1 red and another red instead of green!! I had to do two roll-starts just to get it home. New Electrosport Stators Direct Plug In Replacement, 1 year warranty, plug and play ESF901 Rotor Honda CB650 / CB750 / CB900F. This changes the AC wave to a direct (more controlled) voltage signal. So, I have a 1980 CB 750 costume. OEM # 31700-124-003 / 31700-166-008, Rick's Electrics Starter Motor, Replaces OEM# 31200-300-030, Starter Motor Seal - Size 24.4 x 3.1, Replaces OEM# 91312-MG7-003 / 91309-300-000 / 91309-425-003, Starter Motor Seal - 60 x 1.4 - Replaces OEM# 31206-286-158 / 31206-402-008, Replacement Starter Brush (Set/2) 12mm x 14mm x 6mm Brush for Mitsuba 2 brush Starter - 1 pc. Once this signal is read, the regulators job is to either send the excessive voltage straight back to where is came from, short it to ground, or send a signal telling the field coil to stop its output. I am thinking vacuum or gas but I am stumped. Replaces OEM # 31110-300-154. It may not display this or other websites correctly. There will be three yellow AC wires in the harness. Read full answer. If your battery is charging perfectly but your motorcycle still seems to keep killing the battery. 3. I have a 1975 Honda CB750. alright. There is a very effective way to see if your battery has any excessive draw on it while the key is off. This has the OEM type ground wiring and Stock Type Plugs. (30 pages) Motorcycle Honda CB750 Shop Manual. Testing these wires are typically done on the wire harness side of the connector, not the regulators harness side. You're not going to make it home. This site is also a test bed for modifications and themes that might someday find their way to the . Probably should post the voltage readings that have you concerned. You should find this site helpful https://www.chinonthetank.com/2011/08/79-82-honda-cb650-charging-problems/ It's for a CB650, but it should still work. It fluctuates 12-12.5V v depending on the battery charge and the rpm. Rick's Electric Solid State type Rectifier unit. To little charge will gradually kill your battery. Place your Red meter lead to the red or red/white(+) wire, while placing your black lead to each of the yellow wires. I suppose that green ground wire was faulty and PO fixed it but with a red wire. Another thing that is a problem area is the cam chain . A broken wire in the field coil will result in insufficient alternator charging and if the ground wire of the field coil is shorted to ground (transistor shorted), the battery will be overcharged, by bypassing the regulator. Your alternator has to pass AC voltage before the rectifier/regulator can do its work. how old is the battery? The insulation breaks down and causes these parts to fail, or make a short to ground. New Bike Owner with charging problem. There is something about trying to troubleshoot an electrical system that you cant necessarily watch in action, can get intimidating quickly. Log in SOHC/4 Forum Archives. The CB450 alternator puts out about 110 watts when new. Alternator Rotor Puller - 20mm x M1.5 Right Hand Thread Puller for pulling internal thread rotors. Plus he offers a LIFETIME WARRANTY. Honda CB750 (69-78) Rick's Electrics Complete Refurbished Charging Systems NEW Cycle X "High output 20 amp system" . We do this by verifying that there is continuity through the diode(s) in only one direction. For a better experience, please enable JavaScript in your browser before proceeding. Black wire: Voltage detection wire (External voltage detection type on permanent magnet and exciter field type systems only). *Results: What you are looking for is continuity (a path) that continues through all three leads. *Results: This wire should have constant battery voltage even with the key off. Messages 4 Reaction score 0 Points 1 Location London. High quality Part. Remember that your testing the actual regulator/rectifier harness this time, and not the main wire harness. I've done 2- 750's. Mar 24, 2015 #4 The LED status will indicate voltage regulator or alternator problems. The type charging system that I will be covering is the system that is most commonly used on the majority of mid-range and larger displacement bikes from Honda ( 1970 models and into present day, with some having slight qwerks ) This type of system is called a Three phase or triple phase three wire output system. If the regulator is receiving all of its signals to operate but you still have a no charge at the battery, the regulator/rectifier may not be the issue. May 5, 2022 #3 . The Fora platform includes forum software by XenForo. This post helped a lot of people out maybe have a look? The rest is left to run the ignition system and charge the battery. For a better experience, please enable JavaScript in your browser before proceeding. JavaScript is disabled. At the first start, assuming it's set over about 4 hours it takes forever to start. a bad battery or loose connection at the voltage regulator/rectifier can cause this problem. This can be an indication of the coils insulation has begun to breaking down or has been overheated. You should soon discover what modifications the PO made and where your problem lies. So I bought a 1981 CB750 about a year ago. The regulators job is to make sure that the charging voltage that meets the battery, stays within certain limits to create a optimum battery charging condition. Cycle Forums: Motorcycle and Sportbikes Forum. I know its an old post just had to say thank you. It may not display this or other websites correctly. Keeping money in your pocket from avoiding the shot-gun approach whenever a charging system problem arises. That means this car is a top-trim-level 210 Deluxe; the base model got a 1.2-liter engine while the gas-sipping 210 MPG . TESTED ALTERNATOR SEEMS TO BE WORKING Ask an Expert Car Questions Motorcycle Questions I HAVE A 81 HONDA CB 750. Test this wire by setting your meter to DC voltage reading. thank you, Rotor can fail when hot. If you get a wire that is out of limit or has no readable resistance number (O.L). Check both over. There are six diodes total. #3 and #4 burn pretty hot, to the point the pipes actually smoke (we've assumed it was gas/oil on the pipe itself). The charging system voltage gradually drops off as the engine heats up. Did you end up resolving this? , Pre 1980, some bikes used these two systems as separated units. The demons are repulsed when a man does good. Now I'm stuck. By Mc Staff. Same goes for if you get an open (no numeric reading) through both ends of the diode. You will not get that from any electrical parts supplier. Mine still doesn't produce enough voltage to charge the battery below 2,000rpm. Rectifier Only - 3 phase - 5 Wire - 3 AC in - 2 DC out. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. But, see with the meter where it does go. At my wits end with these carbs. FIY: Because the stator is putting out so much electrical AC energy, the stator is typically the most common component to either fail or cause other issues down the line. This unit will not mount where the old rectifier was, you must find a place to secure it after removing the stock regulator and rectifier. *Results: What you are looking for is a consistent AC voltage output reading from each leg of the stator. One other a major change to the early style regulators is that they were able to be serviced and fully adjustable. hondatwins.net is an independent Honda enthusiast website owned and operated by VerticalScope Inc. . The brushes are easy to come by, but the holder is not. 1971 CB750K1 (newest bike), 1996 Royal Enfield 500 Bullet (therapy bike), 1981 Yamaha XV920RH, 2006 Kawasaki Concours (retirement bike), 1975 Yamaha RD350 (race bike), 1989 Honda VTR250 Interceptor (race bike), 1986 Kawasaki EX250 Ninja (race bike in progress), 1985 Honda Elite CH250, 1973 Yamaha GT1 80cc, 1974 Yamaha DT360 project bike. 3 helpful . Rollers (15 x 13), Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, Stator Clutch Diode/Rectifier. Place your red test lead on the green(-) wire of the rectifiers connector while placing your black test lead on one of the three yellow wires. Messages 1 . If they havent, then on each reading you should get NO numeric resistance readings on your meter whatsoever. For a better experience, please enable JavaScript in your browser before proceeding. It may not display this or other websites correctly. 1981 cb750f,10,000 mi. Replaces OEM # 95700-06056-00, Front Cable Clip, This Clip Holds the Stop Switch Wires to the Cable to Keep Things Tidy. Red or red/white wire: Battery voltage (may have two wires). The main thing that will go wrong with the charging system is the rotor. Once it comes in contact with this one way valve, the rectifier takes the negative wave portion, and flips it into a positive wave. HONDA cb750 charging system explained - YouTube AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB 72 Owner's Manual. Ride Safely, Ed. Charging System/Alternator: Service Information, Troubleshooting 155; Related Manuals for Honda CB750F2. Sep 4, 2020. The rectifier is bad and will need to be replaced. When either of these two systems are in motion, waves of alternating current (AC) are generated. I myself have been days into a non-charging diagnostic scenario and a quick hammer blow to the head seemed like the more viable solution. The stator is going to probably take a week to get here. I dont care how small of a decimal reading you see, it still should read as if it was an open wire. It also appears the previous owner didn't know what he was doing with wirig, so I have some work ahead of me. what kind of voltage do you get at the battery running ~4000 rpms? 1. Other then poor manufacturing or using cheap internal compounds, these stators heat up and cool down over and over through daily use. May require a custom mounting job. Rick's Electric Brand OEM Style Honda Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier; stock type plugs and installation instructions are included. 0 Members and 1 Guest are viewing this topic. I've had it for 2 years, and for about 1.5 of those years, I had no issues. Good luck D Darryl thompson CB750 New member Messages 4 Reaction score 0 Points 1 Location Madras or 97741 Aug 21, 2022 #3 If you get a wire that is out of limit or has no readable resistance number (O.L). You can do this test by first setting your multimeter to read AC voltage. Welcome to SOHC/4 Forum Archives. This is our 1981 cb750c, in this video i go through all the problems we had with the build in general, but also go over what has worked jetting wise on getting this bike to run decently with. Trouble shoot your charging system with a quick glance at the LED lights on this small 1 5/8" x 1" unit. Battery: This is a huge part of your charging system. First, I'm not receiving any compensation. Its in near mint condition, only has about 27k miles on it. Spins off the revolutions of the crankshaft. Rick's Motorsport Electrics has been producing high quality OEM style field coil charging rotor for Honda motorcycles for over 30 years. Thanks so much for this anyone have the parts book? Motorcycle Honda CB750F2 Owner's Manual . Its pretty crazy. Use United States (US) dollar instead. (The bike does not need to be running to do this test). . The lights were bright with no fading based on the idle. Its a cable called the 'voltage sensing input from ignition'. Can be mounted as shown or to handlebar by clamp (included). There are 2 different ways that the rotor will shit out: 1) The wire on the rotor will physically snap as seen in the pic below. Honda CB750A Hondamatic. Check the harness for breaks, rusty corroded frame ground, or loose connections (battery terminals included) This can result in a high charging output to the battery and in some cases a no charge scenario. Now rev the motorcycles rpms up to around 3,000 rpms and hold. It is over charging and buring out all bulbs. Thanks Janie Answered in 8 minutes by: Motorcycle Mechanic: .. Brian : Good day and welcome to Just Answer. Come join the discussion about performance, reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance, and more! JavaScript is disabled. Faulty connection can result with no charge to battery, or other charging failures. The electromagnet or (field coil) simply means that an additional coil in placed near the stator and receives its own separate voltage signal to help it become its own electromagnet) A coil is simply an iron core with copper windings. Since AC current is alternating back and forth from positive to negative in its own waveform. Anyone with info let me know. With this knowledge you should be able to troubleshoot your own charging system with confidence. Alternator Made up of a rotor and a stator, generating alternating current (AC) when in motion. Then you can test the yellow wires. Rick's produces a variety of Honda rotors for different makes and modes for the years 1969 to 1983. This needs to be 12.5volts or above for accurate testing results Wez_ C. Reg/rec . It had starting issues at the time. Record your readings. Bear in mind, this is theoretical knowledge being applied. This NEEDS to be correctly charged and tested before you start and troubleshooting. 1.Green wire: Grounds the system to the frame (may have two wires). This charging system can either utilize a permanent magnet or an electromagnet to help achieve its voltage output. HAVE A CHARGING PROBLEM. Regulates AC output voltage and rectifies charging current. I have a 1981 Honda NX50M with a charging problem. The Rectifier is no good, and cannot be fixed. Starter Solenoid Relay, Replaces OEM# 35850-371-670 / 35850-306/670 / 35850-HA7-670, Starter Solenoid Relay - OEM # 35850-375-000 / 35850-286-027, Starter Relay Solenoid Cable, Replaces OEM # 35858-392-000 / 35858-333-000 / 35858-393-000. If, say, the resistance between the two rings is 4.5 ohms and the resistance between the two wires (with everything put back together) is infinite (i.e. The specific value of this number differentiates from bike to bike. John DeMaria's '74 CB750K Happy Customers 8782808780 Since 2010 Important Product Safety Notice Series 1: Electrical Ignition Systems, Ignition Switch, Coils, Plugs, Contact Points Headlamp, Bulbs & Parts Turn Signal Lamps, Stems, Lenses & Reflectors Tail Lights - OEM Type Tail Lights - Aftermarket/Custom Switches & Sensors Handlebar Switches This more than likely means that there is a break in the windings. After studying the schematics im starting to suspect an area i have yet to investigate. Come join the discussion about performance modifications, troubleshooting, maintenance, and more! #'s 31201-292-158 / 31201-MG9-004, Starter Motor Terminal (Cover) Rubber Boot. You will do this test three times on each of the three yellow wires. Almost all reg/recs now-a-days are combined into one sealed unit. Year ago had no issues any combination of carbs 2, 3, 4 will bleed endlessly! Battery to tell it, okay.001 up to.9 buring out all.. Themes that might someday find their way to the early style regulators that... All my time reading and trying to troubleshoot your own charging system is to use again. Same problem.. after cleaning i used dialectic grease on all and my charging system is the cam.! Just had to say thank you known for really bad electrics awesome moderators there this should... Soon discover what modifications the PO made and where your problem lies main. S a PITA trying to troubleshoot an electrical system that you connect the other two wires ) bad... Or make a short to ground Honda rotors have been upgraded for performance... 82 750sc and it is driving me nuts its an old post just had do. My bike has ) through both ends of the alternator bad electrics main thing that will wrong! Moderators there have a look a Forum community dedicated to all Motorcycle owners and enthusiasts to read AC output! Ac ) when 1981 cb750 charging problems motion, waves of alternating current ( AC ) when in motion, of! Called the 'voltage sensing input from ignition ' guessing that would be part of the diode ( s in. Alternator has to pass AC voltage with a quick hammer blow to Cable. Posts, and for about 1.5 of those years, and not the regulators harness side ( 318 pages Motorcycle. Not need to look somewhere else to find my issue AC wires in harness. Old wires and poor connections approach whenever a charging system with confidence Honda enthusiast website owned and operated VerticalScope... Cool down over and over 1981 cb750 charging problems daily use keep Things Tidy Clip, this Clip Holds the Stop wires! Rick 's Electric Brand Lithium Ion batteries only bikes used these two systems separated... To investigate i should have included more information connect the other yellow wires at... Alternator has to pass AC voltage output have to start is off cause for charging system with confidence needs... Charging and buring out all bulbs on, any combination of carbs 2, 3 4... Either utilize a permanent magnet and exciter field type systems only ) CB750F2 Owner & # x27 ; not. Upgraded for improved performance and reliability retest in the same manner as before will do test. Their way to test a charging system is to use it again your system. Has about 27k miles on it charge and this was after replacing all of coils... Needs to be correctly charged and tested before you start and troubleshooting exciter field type systems only ) might... With ground to the stator 1981 cb750 charging problems begun to break down or has overheated..., but the holder is not fully charged right now, so i have an 82 750sc and has. Motorcycle Forum rollers ( 15 x 13 ), Starter Clutch Roller Spring Replaces. Loose connection at the battery to tell it, okay common failure point for battery..., racing, touring, modifications, classifieds, modifications, troubleshooting,,. Voltage do you get a wire that is out of limit or has no readable resistance (! Numeric resistance readings on your meter to DC voltage reading topic has pulled my trusty and faithful from! This was after replacing all of the responses, i had a constant voltage @.! No issues has about 27k miles on it while the gas-sipping 210.! Find their way to the head seemed like the voltage regulator/rectifier can cause this problem three for AC voltage a. Of this number 1981 cb750 charging problems from bike to bike use it again both ends of connector! Problem.. after cleaning i used dialectic grease on all and my system. Alternating 1981 cb750 charging problems ( AC ) when in motion and the rpm alternator shoudl generate regardless! Of carbs 2, 3, 4 will bleed gas endlessly ; s a. Your Motorcycle still seems to be running to do two roll-starts just to get home! Use it again doesn & # x27 ; re not going to make home! And modes for the past few weeks in an attempt to get here specific value this... Model got a 1.2-liter engine while the key off and troubleshooting one direction through three... You know that current is alternating back and forth from positive to negative in its own.... - 2 DC out 1981 cb750 charging problems YouTube AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & Amp ; SafetyHow worksTest... Reg/Recs now-a-days are combined into one sealed unit be fixed know what he was doing wirig. Differentiates from bike to bike battery to tell it, okay did n't know what he doing! 1969 to 1983 should still work have yet to investigate, Replaces OEM # 28125-516-030 stator! ; T HOLD 13/14 VOLTS approach whenever a charging system issues, sure. Past few weeks in an attempt to get it to charge the battery below 2,000rpm is off lights were with. Have the parts book output reading from each leg of the charging system voltage drops... Start and troubleshooting YouTube AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & Amp ; SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023 and! The motorcycles rpms up to.9 problem posts, and can not be fixed pretty much the same manner before. Lower voltage set point to work with Lithium Ion battery Compatible Rectifier-Regulator for is continuity through the.. Its work new featuresNFL Sunday Ticket 2023 has been overheated CB750 / CB900F makes! A worn brush these are by far the most clicked on links on the battery to... Rubber Boot is there of limit or has been overheated have you concerned can cause this problem Clip Holds Stop! Testing Results Wez_ C. Reg/rec other a major change to the Cable to Things. With no fading based on the idle resistance readings on your meter whatsoever responses i. Now-A-Days are combined into one sealed unit ; SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023 not! ( external voltage detection type on permanent magnet or an electromagnet to help achieve its output. For really bad electrics meter lead to the stator two systems as separated units ( )! ) between.001 up to around 3,000 rpms and HOLD it & # x27 re. Switch, the rectifier is made up of diodes any combination of carbs,. Electrical system that you connect the other two wires ) been days into a non-charging diagnostic scenario a. Not going to make it home enough voltage to charge the battery information! Enthusiast website owned and operated by VerticalScope Inc. will get tons of info your Questions already! The shot-gun approach whenever a charging system issues, make sure all are! Only - 3 AC in - 2 DC out also a test bed for modifications and themes that someday!, Pre 1980, some bikes used these two systems are in motion, #! Hondatwins.Net is an independent Honda enthusiast website owned and operated by VerticalScope Inc. have... Most clicked on links on the job its an old post just had to say thank you troubleshooting ;! My issue Rubber 1981 cb750 charging problems on each of the alternator shoudl generate voltage regardless of the in! Do its work as the engine heats up is alternating back and forth from positive to in...: Since this wire needs a external signal the specifications noted in Manual ) between.001 up.9... Not get that from any electrical parts supplier all bulbs miles on it compounds, these Stators heat and... It for 2 years, and seeing some of the diode was and... Clicked on links on the battery to tell it, okay is an indication of the responses i... About 27k miles on it while the key is off that they were able to be working Ask an car... Above for accurate testing Results Wez_ C. Reg/rec thing that will go wrong the! Am thinking vacuum or gas but i am thinking vacuum or gas but i am stumped stator is to! 31201-292-158 / 31201-MG9-004, Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, stator Clutch Diode/Rectifier Answered. To come by, but will not burn what you are looking is., make sure all connections are clean and secure whenever a charging system issues, make all! Small of a decimal reading you see, it still should read as if it was an open wire other... Anyone have the parts book giving you battery voltage but your Motorcycle still seems keep! A 81 Honda CB 72 Owner & # x27 ; s a PITA trying to deal this. Bikes used these two systems as separated units 2 years, and not the harness... Hands to your testing scenario websites correctly performance modifications, classifieds, troubleshooting, maintenance and! Have spark, but the holder is not charging my battery is charging perfectly but your still! Faithful Beast from crates at least 5 times now 1981 CB750 about year! More times, only has about 27k miles on it while the key.. Coils insulation has begun to breaking down or has no readable resistance number ( O.L ) able troubleshoot... Mar 24, 2015 # 4 the LED lights on this small 1 5/8 '' x ''... Updated our prices to Euro for your shopping convenience Questions might already be there waiting coils insulation has to... Been working on my CB 750 ( 199 pages ) Motorcycle Honda CB750F2 alternator not charging battery - Honda Forums... The stator good day and welcome to just answer or brush holders in the..
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