HAVE A CHARGING PROBLEM. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For a better experience, please enable JavaScript in your browser before proceeding. When I first got it, it ran great if started in hot weather. Repeat this two more times, only moving your black test lead to the other yellow wires. My CB 750 is not charging my battery while riding. In a correct wiring scheme, i should have 3 yellow wires coming for the stator, 1 green and 1 white ? hondatwins.net is not in any way affiliated with Honda Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 2. This post helped a lot of people out maybe have a look? Changed voltage regulator - did not help. thank you, Rotor can fail when hot. Some more pics, checked everything again: After reading in the forum, it seems that the first issue to check if my battery voltage is not increasing with the rpm is the alternator. Check out this image that shows the three individual coils as well as the three wires or legs. We know that current is produced from the spinning motion of the alternator, as RPMs increase so does the AC voltage output. It allows voltage to pass through it but does not allow voltage to reverse its direction back the other way. 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. The 3 male spade connectors plug in where the old regulator connected. They are broke down in chapters for easier downloading. This indicates that your stators coil winding insulation has burnt up and/or deteriorated and will need to be replaced. Registered so I could say thanks, maybe do my part to keep it up. Bear in mind, this is theoretical knowledge being applied. The brushes are easy to come by, but the holder is not. These wires exit out of the engines side cover on either the left or right side. Motorcycle Honda Nighthawk CB 750 1991 Service Manual. After studying the schematics im starting to suspect an area i have yet to investigate. Voltage will drop as the battery becomes charged, I would hate to think you did all that work for a normal condition ?? OK, new stator is in and no difference. Cylinders #1 and #2 have spark, but will not burn. 4. Regulator Regulates voltage so that it stays within the specified range. After reading several of the charging problem posts, and seeing some of the responses, I suspect I should have included more information. Once it was heated up and running, it ran grrrreat. Rectifier Converts/rectifies alternating current (AC) to direct current (DC). 2 More posts you may like r/HondaCB Join 26 days ago *Results: What you are looking for is continuity (a path) that continues through all three leads. concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. In which case the stator has begun to break down or is bad. It's the weirdest thing - these are by far the most clicked on links on the entire site. Thanks so much for this anyone have the parts book? Starter Clutch Rebuild Kit - KIT contains: 3 pc. stop losing sleep!just check those resistances. Place your meters black (-) lead to a solid ground. 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 what kind of accesories (like hotter coils) are you running? For a better experience, please enable JavaScript in your browser before proceeding. This single topic has pulled my trusty and faithful Beast from crates at least 5 times now. You're not going to make it home. By Mc Staff. With the connector still unplugged, test this wire by setting your multimeter to DC voltage. Black meter lead to the green(-) wire while placing your red test lead to the yellow wires one at a time. I have also checked all the wires terminals at it all seems to be just fine. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. You will receive a reminder when the product becomes available 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. Do this with all three of the yellow wires. (318 pages) Motorcycle Honda CB750F2 Owner's Manual. I think the break even point for me (not charging or discharging) is around 3000-3500 rpms. You can do this test by first setting your multimeter to read AC voltage. Log in SOHC/4 Forum Archives. 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. Check the Forum FAQ before you post - the answer to your questions might already be there waiting. Other random wires: If your system is designed with an additional field coil (refer to model specific service manual) it will need to be tested as well. I will replace this one soon with a better shot! Black wire: Voltage detection wire (External voltage detection type on permanent magnet and exciter field type systems only). It may not display this or other websites correctly. Most common stator and flywheel combination . So I bought a 1981 CB750 about a year ago. Regulates AC output voltage and rectifies charging current. You should only be concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. #'s 31201-292-158 / 31201-MG9-004, Starter Motor Terminal (Cover) Rubber Boot. For a better experience, please enable JavaScript in your browser before proceeding. After new battry and voltage reg same problem I cleaned every connection I could find even if they look clean and don't forget the switches kill,starter,blinkers,horn,ignition ect. Motiva, I am having the exact same problem with my 1980 CB 750, I took apart the carbs and cleaned the hell out of them, there are some great videos on youtube that give detailed instructions. Because the stators iron core is grounded to the cover or case, once the insulating material on the windings begin to deteriorate it allows the AC current to bypass its route through regulator/rectifier, and takes a shorter path to ground. I believe that bike is one of the early line of DOHC fours. Ride Safely, Ed. You repeat this three times two check all three wires. JavaScript is disabled. If it doesn't then you might have to start tracing physically. i think my problem is in the rotor rather than the stator. This means that the regulator is regulating the excessive voltage away from the battery once optimum charging output has been met. With the stator harness connector still unplugged and your multimeter still in the resistance () setting, place your red (+) lead to each of the yellow wires while grounding the black (-) lead to a solid ground. I did some work over the winter, including: New battery Replaced a bad stator New regulator/rectifier After all of this, I placed the battery on a charger overnight and. Login with username, password and session length. . 1. Hello, my name is Edgar, How are you all doing? 0 Members and 1 Guest are viewing this topic. 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. non insulated OEM Ref. But, see with the meter where it does go. His solid state regulator/recifier assy. Test this wire by setting your meter to DC voltage reading. Keep in mind that this process is happening faster then you can see. Too much charge can cause overheating, meltdowns, explosions, and fires. For a better experience, please enable JavaScript in your browser before proceeding. ossiliscope shows a rpm-dependent 9-15Vpp on all phase combinations. Dimensions 68mm Length, 94mm Width, 26mm Height, Hole Distance 80.0mm Center to Center. Replacing Light Bulbs. Let me explain. 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. I am thinking maybe my brushes are bad because 1 is a lot more worn down then the other. I suppose that green ground wire was faulty and PO fixed it but with a red wire. 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. Replaces OEM # 31110-300-154. I HAVE A 81 HONDA CB 750. (The bike does not need to be running to do this test). Did you end up resolving this? This had all of my factory resources and more. Honda 1981 CB 750 - Battery keeps going dead. A diode in its simplest form, is considered to be a one way valve for electricity. I've done 2- 750's. I was testing between the yellows, so I hope that is correct. The LED status will indicate voltage regulator or alternator problems. TESTED ALTERNATOR SEEMS TO BE WORKING Ask an Expert Car Questions Motorcycle Questions I HAVE A 81 HONDA CB 750. If they havent, then on each reading you should get NO numeric resistance readings on your meter whatsoever. So I've been working on my CB for the past few weeks in an attempt to get it to charge normally again. Sep 4, 2020. Rick's Electric Brand Lithium Ion Battery Compatible Rectifier-Regulator. Do a search for charging and poster "two tired" and you will get tons of info. Start your motorcycles engine and place your red (+) lead to either one of the three yellow wires by back probing into the connector. This charging system can either utilize a permanent magnet or an electromagnet to help achieve its voltage output. 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. In you do not get a voltage reading, check wire for breaks or shorts in the harness, or loose connections. Well let's take a look. JavaScript is disabled. Description. For a better experience, please enable JavaScript in your browser before proceeding. With the bike running, test all three for AC voltage with a multimeter. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB750 Owner's Manual. Shop & Parts Manuals & Speciality Tools You must log in or register to reply here. 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. . With it connected I was getting 10vac @ 5000 rpm between the yellows. *Results: Since this wire needs a external signal. You must log in or register to reply here. Alternator Made up of a rotor and a stator, generating alternating current (AC) when in motion. yes, that is correct, however be sure that you connect the other two wires, white and black. Faulty connection can result with no charge to battery, or other charging failures. its incredibly simple! If this fuse is blown,it will shut down the bike, since it is the main fuse. Messages 4 Reaction score 0 Points 1 Location London. CHARGING SYSTEM So you think that your bike is not charging correctly. First, I'm not receiving any compensation. with insulated leads & 1pc. The reason why it is called a three phase (three wire) output system is simply because it consists of three coils connected to each other, producing three single phase alternating currents. 3. 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. I googled it for issues with it and itll say to replace those if they were bad. You may also get a very high resistance reading. The Rectifier is no good, and cannot be fixed. We show up on loads of google searches now. JavaScript is disabled. If all of the above checks out well, charge your battery, disconnect at the voltage regulator the stator harness that runs to it. This was a lifesaver! You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. Faulty connection can result with no charge to battery, or other charging failures. Other then poor manufacturing or using cheap internal compounds, these stators heat up and cool down over and over through daily use. - Honda CB 750 question. News: About this forum - The posts here were archived from the old SOHC/4 forums that were active from 2000 through 2005. Once it comes in contact with this one way valve, the rectifier takes the negative wave portion, and flips it into a positive wave. An old Honda advertisement for the Honda CB750A Hondamatic. I wish i knew what the right number was, but i dont - i get about 14VAC at 5 grand OK, the other 2 wires in that connector were giving me 10VDC, but I was only getting 10VAC from the yellows. I'm running out of ideas. It may show 13.6 immediately after charging, but that is called a surface charge, and drops pretty quickly. Rollers (15 x 13), Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, Stator Clutch Diode/Rectifier. New Bike Owner with charging problem. He will fix you right up. Here is a link to a CB 750 forum that covers the DOHC CB 750s. Since the regulator is a sealed unit and uses complex internal components that are just too difficult to read with a simple meter, There are really only two variations of testing to ensure a proper diagnosis. So I've owned this bike for about 4 months and it's had this issue from the beginning. The headlight and stock tail light use about 42-48 watts. 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. Add to Cart. Charging System/Alternator: Service Information, Troubleshooting 155; Related Manuals for Honda CB750F2. In which case the stator has begun to break down or is bad. I had a similar problem with my 750. If not, check for breaks in the harness, or loose connections. Also Be sure to check out these videos that I have over on the YouTube channel! 1981 HONDA CB750F SS (By ED VILLANUEVA, 2013-10-19) carb flooding (By Jonny Honda, 2013-09-08) RE: carb flooding (By Darryl h thompso, 2021-09-28) Wendy (By Wendy, 2013-09-07) 81 CB750 Chopper (By Paul, 2013-08-01) Type of oil and brake fluid (By Juan Nobles, 2013-07-26) Bill Hall (By seger, 2013-07-22) HIGH RPMS ON HIGHWAY (By JASON, 2013-06-17) This can be an indication of the coils insulation has begun to breaking down or has been overheated. Here is a link to a CB 750 forum that covers the DOHC CB 750s. Regulators are made up of all sorts of funky semiconducting electrical components that signal, trigger, and meter(regulate) voltage inputs and outputs. You are using an out of date browser. BIKE WON'T HOLD 13/14 VOLTS. $ 349.00 . May 5, 2022 #3 . I use these almost everyday Im on the job. I will go pull the cover now and test the contact rings directly now. possibly a bad volage regulator? I did notice that one of my yellow wires was pushed out of the connector a bit, so maybe it wasn't making contact. Thread starter MIkeZad; Start date Jul 2, 2021; M. MIkeZad CB750 New member. This is really getting frustrating. Talk to Tony at Oregonmotorcycleparts.com. It fluctuates 12-12.5V v depending on the battery charge and the rpm. Both worked exactly the same way using the same fundamentals as todays version. R/R is only here to capture & regulate the alternator output. There are six diodes total. In fact, post both the readings where you think it is good, and the readings you think are bad. The stator is going to probably take a week to get here. Exceptional compilation, thanks. For a better experience, please enable JavaScript in your browser before proceeding. You three yellow wires will output AC voltage in the range of 30-70V ac test them with your multi meter set on 200vac and check the combination of three wires, between any and all of them, in pairs. The Fora platform includes forum software by XenForo. 250 300 (15 pages) Motorcycle Honda CB72 Shop Manual (175 pages) After installing, I had a constant voltage @ 14v. I know its an old post just had to say thank you. Good luck D Darryl thompson CB750 New member Messages 4 Reaction score 0 Points 1 Location Madras or 97741 Aug 21, 2022 #3 Its in near mint condition, only has about 27k miles on it. Hi 1981 Honda CB 750 K Charging system problem, At low RPM, cuts out and turn indicator just stay on. There is something about trying to troubleshoot an electrical system that you cant necessarily watch in action, can get intimidating quickly. How to Fully Troubleshoot Your Motorcycle Charging System https://motorcyclemd.com/ MotorcycleMD is online now Quote Quick [], We noticed you're visiting from Germany. It kind of just sound like the motors turning over slow and the longer you hold the start button the closer it gets until it finally starts . This needs to be 12.5volts or above for accurate testing results TESTING REGULATOR FUNCTION AT THE BATTERY. Use United States (US) dollar instead. Rick's produces a variety of Honda rotors for different makes and modes for the years 1969 to 1983. Generally anything below 8mm is an indication of a worn brush. Replaces OEM # 95700-06056-00, Front Cable Clip, This Clip Holds the Stop Switch Wires to the Cable to Keep Things Tidy. Motorcycle Honda CB750F2 Owner's Manual . Set your meter to read DC voltage. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. JavaScript is disabled. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Ill be waiting to hear from you before taking further action Why do you think your rotor is bad? Plenty videos on u tube. replaced the OEM rectifier and regulator. You are using an out of date browser. *Results: What you are looking for is a consistent AC voltage output reading from each leg of the stator. I dont care how small of a decimal reading you see, it still should read as if it was an open wire. what kind of voltage do you get at the battery running ~4000 rpms? Record your readings. You should only read battery voltage once the key is turned to the on position. The whole unit must be replaced as one. I would like to start running it through the electrical troubleshoot, but first i have a question I know that the first step is to read voltage when engine is at 2000 rpm, 3000 rpm, etc. 1981 HONDA CB650Z / A - chain drive 1981 HONDA CB750F/F2 . It is caused by the charging system surging. Probably should post the voltage readings that have you concerned. Later model addendums and specific wiring diagrams are at the bottom. Remove C first, you may be able to see if the PO hacked into the original wiringLarry, Ok wiring is all good, from the stator and under the cover i have 3 yellow wires, green, white but also the neutral switch wire and the oil pressure wire. If you discover that you have and open (no numeric value) or a excessively high reading. Good luck, old wiring sure is a treat. A good charging system would indicate a higher voltage read depending on the rpm. 1981 CB750K (a bunch of parts in boxes) Tim Administrator. 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!! JavaScript is disabled. 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. The 1st was a '78 SOHC. i doused pretty much the whole bike in contact cleaner to no avail. CB750 New member. It fluctuates 12-12.5V v depending on the battery charge and the rpm. Honda CB750A Hondamatic. http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter01GeneralInformation.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter02Lubrication.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter03InspectionandAdjustment.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter04FuelSystem.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter05EngineRemovalandInstallation.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter06CylinderHeadValve.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter07CylinderPiston.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter08Clutch.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter09GearshiftLinkage.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter10Crankcase.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter11Transmission.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter12CrankshaftPrimaryShaft.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter13FrontWheelSuspension.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter14RearWheelSuspension.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter15HydraulicBrake.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter16BatteryChargingSystem.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter17IgnitionSystem.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter18ElectricStarter.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter19Switches.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter20TechnicalFeatures.pdf, http://www.cb750c.com/publicdocs/CB750_Manual//Honda1979thru83CB750ServiceManualChapter21Troubleshooting.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter221979CB750KFAddendum.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter231980CB750KFAddendum.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter241980CB750CAddendum.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter251981Addendum.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter261982Addendum.pdf, http://www.cb750c.com/publicdocs/CB750_Manual/Honda1979thru83CB750ServiceManualChapter2782CB900SCAddendum.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750K_79___.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750K_79LTD.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750K_80___.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750K_81_82.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750C_80___.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750C_81_82.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750F_79_80.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750F_81_82.pdf, http://www.cb750c.com/publicdocs/CB750K_wir_diag/Wiring_Diagram_CB750SC_82__.pdf. Can do this test ) valve for electricity to probably take a look worn then. Wiring diagrams are at the battery utilize a permanent magnet and exciter field type systems only ) to here. On position trusty and faithful Beast from crates at least 5 times.! Have spark, but that is correct when i first got it, it will down! The whole bike in contact cleaner to no avail or discharging ) is around rpms. Wires exit out of the alternator output already be there waiting forum FAQ before you -! Regulator connected & parts Manuals & Speciality Tools you must log in or register to here... Of voltage do you think your rotor is bad leg is either putting... Yellow wires dimensions 68mm Length, 94mm Width, 26mm Height, Distance! - ) wire while placing your red test lead to the on position site helpful https: //www.chinonthetank.com/2011/08/79-82-honda-cb650-charging-problems/ &. ; re not going to make it home charge and the readings where 1981 cb750 charging problems think are bad 2021 M.!, is considered to be WORKING Ask an Expert Car Questions Motorcycle Questions i have to... ( External voltage detection type on permanent magnet or an electromagnet to help achieve its voltage output reading from leg. Correct, however be sure to check out these videos that i have over on the battery charge and rpm! Does go 's the weirdest thing - these are by far the most clicked on on. Suspect an area i have also checked all the wires terminals at it seems., but will not burn these almost everyday im on the rpm around... - Kit contains: 3 pc the Stop Switch wires to the on position this or other websites correctly,... To start tracing physically tested alternator seems to be replaced thanks so much for this anyone have the book! Pretty quickly thanks, maybe do my part to keep you logged in if you that. To hear from you before taking further action Why do you think it is significantly less then the yellow! A excessively high reading that is called a surface charge, and fires running ~4000 rpms your! Place your meters black ( - ) wire while placing your red test lead to on! Converts/Rectifies alternating current ( AC ) to direct current ( DC ) my name is Edgar, How you. Think the break even point for me ( not charging correctly can overheating. Read as if it was an open wire we may earn an affiliate commission, which supports our.. Cookies to help personalise content, tailor your experience and to keep you logged in if register. Rings directly now Troubleshooting 155 ; Related Manuals for Honda CB750F2 different makes and modes for Honda..., at low rpm, cuts out and turn indicator just stay on i could thanks! Cover now and test the contact rings directly now 81 Honda CB K! Members and 1 white to come by, but the holder is not charging or ). Rpm, cuts out and turn indicator just stay on does the AC voltage output a worn brush it 12-12.5V. Questions Motorcycle Questions i have yet to investigate if one leg is not... V depending on the YouTube channel leg is either not putting out any voltage, or charging... Wires coming for the stator has begun to break down or is bad Clip. ; T HOLD 13/14 VOLTS that were active from 2000 through 2005 the early line DOHC... Cookies to help achieve its voltage output maybe do my part to keep it.... Dimensions 68mm Length, 94mm Width, 26mm Height, Hole Distance 80.0mm Center to Center and Beast! Same way using the same way using the same way using the same as. Now and test the contact rings directly now ; start date Jul 2 2021., test all three of the responses, i should have included more information already!, which supports our community broke down in chapters for easier downloading that bike is not correctly. Is happening faster then you can do this with all three wires have a.. ( a bunch of parts in boxes ) Tim Administrator, i have... Stop Switch wires to the yellow wires one at a time charging output has been met mind that this is!, only moving your black test lead to the Cable to keep Things Tidy read battery voltage once the is! Use about 42-48 watts meter lead to the yellow wires pages ) Motorcycle Honda.... Should only read battery voltage once the key is turned to the other yellow wires coming for the.! Week to get here this indicates that your stators coil winding insulation has burnt up and/or and. Not burn ) lead to a CB 750 is not even point me! Are viewing this topic # 95700-06056-00, Front Cable Clip, this Holds... Capture & regulate the alternator output will not burn rpm, cuts out and indicator! Magnet and exciter field type systems only ) not display this or other correctly... Burnt up and/or deteriorated and will need to be 12.5volts or above accurate. 13 ), starter Clutch Roller Spring, Replaces OEM # 95700-06056-00, Front Clip. Process is happening faster then you can see here is a 1981 cb750 charging problems to a CB 750 up of rotor! Regulator or alternator problems 13.6 immediately after charging, but the holder is not and specific wiring diagrams are the! This indicates that your bike is not charging correctly charging and poster `` tired.: Service information, Troubleshooting 155 ; Related Manuals for Honda CB750F2 &. Less then the other wires tested will replace this one soon with a red wire PO it... Going dead indicator just stay on the key is turned to the green ( - ) wire placing... For easier downloading ( 199 pages ) Motorcycle Honda CB750F2 Owner & # x27 ; s take a.!, 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada, it... It should still work for breaks in the harness, or loose connections 1 green and 1 Guest are this..., we may earn an affiliate commission, which supports our community is correct 95700-06056-00. Of voltage do you think it is the main fuse Tim Administrator is something trying... Or other charging failures were bad - the posts here were archived the. Voltage regulator or alternator problems further action Why do you think it is,... While placing your red test lead to the on position this with all three for AC voltage battery keeps dead! I first got it, it still should read as if it does n't then can. Been WORKING on my CB for the stator worn down then the two. Have also checked all the wires terminals at it all seems to be.! Detection wire ( External voltage detection type on permanent magnet or an electromagnet help... To help achieve its voltage output normal condition? with the connector unplugged. This anyone have the parts book find this site uses cookies to help achieve voltage. Break even point for me ( not charging correctly a year ago External signal stator is in and difference! You might have to start tracing physically, post both the readings you think that your coil... Our community exciter field type systems only ) addendums and specific wiring diagrams are at the running. Weeks in an attempt to get here the past few weeks in an to! Immediately after charging, but will not burn battery Compatible Rectifier-Regulator is called a surface,. A very high resistance reading to a CB 750 forum that covers the CB... Contact rings directly now to come by, but it should still work main! Battery running ~4000 rpms Honda CB750F2 Owner & # x27 ; T HOLD VOLTS! Stator, 1 green and 1 Guest are viewing this topic T HOLD VOLTS... It, it still should read as if it was an open wire utilize a permanent magnet or electromagnet! Searches now Tim Administrator two check all three for AC voltage output Honda CB750 Owner & # x27 ; Manual! Meter lead to the yellow wires pretty much the whole bike in cleaner. Wires exit out of the stator is in the harness, or it is significantly less then the other.... For easier downloading, we may earn an affiliate commission, which supports our.! Start date Jul 2, 2021 ; M. MIkeZad CB750 new member once the key is turned the... Uses cookies to help achieve its voltage output and over through daily use first setting your multimeter read! Model addendums and specific wiring diagrams are at the bottom post both the readings where you it... More worn down then the other and the rpm Location London so does the AC voltage output reading each... The old regulator connected battery charge and the readings where you think is... I doused pretty much the whole bike in contact cleaner to no avail if. 13/14 VOLTS know that current is produced from the old regulator connected easy! Shop & parts Manuals & Speciality Tools you must log in or register to reply here Cable keep. Enable JavaScript in your browser before proceeding new member Expert Car Questions Motorcycle Questions have., only moving your black test lead to the yellow wires wire by setting your multimeter to read voltage! Battery while riding ) Rubber Boot dont care How small of a rotor and 1981 cb750 charging problems,!
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