I did some searching, and so far was unable to find a posting that clearly relates to my problem. Typically the regulator utilizes 3 to 4 different wires to function properly. It may not display this or other websites correctly. *Results: What you are looking for is a consistent AC voltage output reading from each leg of the stator. I suppose that green ground wire was faulty and PO fixed it but with a red wire. If your battery is charging perfectly but your motorcycle still seems to keep killing the battery. . 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. JavaScript is disabled. A good charging system would indicate a higher voltage read depending on the rpm. Besides the dog, the test light is a mans best friend. . 4. CB750 New member. May 5, 2022 #3 . 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. Both worked exactly the same way using the same fundamentals as todays version. The stator needs to be replaced. I have a 1981 Honda NX50M with a charging problem. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. Years produced: 1976-78. Test the AC voltage from the stator wires three yellow should get about 26v ac. These Honda rotors have been upgraded for improved performance and reliability. I HAVE A 81 HONDA CB 750. Once it was heated up and running, it ran grrrreat. New Bike Owner with charging problem. OK, new stator is in and no difference. Unless they're both open circuits, you can verify that the brushes are contacting the rings if both resistance measurements are pretty much the same. Dimensions 80mm Length, 94mm Width, 27mm Height, Hole Distance 70.0mm Center to Center. Honda cb750 sport motorcycle owner's manual (90 pages) CB750c 1981 weak charge issue. Black wire: Voltage detection wire (External voltage detection type on permanent magnet and exciter field type systems only). 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. Keeping money in your pocket from avoiding the shot-gun approach whenever a charging system problem arises. The red wire goes from this fuse to the fuse panel in the handlebars, and if that is the only wire that shorted, it should be not too difficult to fix. a bad battery or loose connection at the voltage regulator/rectifier can cause this problem. The demons are repulsed when a man does good. 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. It may show 13.6 immediately after charging, but that is called a surface charge, and drops pretty quickly. 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) Can someone help me? To accomplish this switch, the rectifier is made up of diodes. non insulated OEM Ref. Come join the discussion about performance modifications, troubleshooting, maintenance, and more! BIKE WON'T HOLD 13/14 VOLTS. Another thing that is a problem area is the cam chain . This can be an indication of the coils insulation has begun to breaking down or has been overheated. 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. you are looking for is continuity (a path) that continues through all three leads. 1981 CB750K (a bunch of parts in boxes) Tim Administrator. The stator needs to be replaced. Too much charge can cause overheating, meltdowns, explosions, and fires. Plenty videos on u tube. I had to do two roll-starts just to get it home. Probe this wire with the red(+) lead while touching your other lead to a solid ground. 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. Please forgive me for this awful video quality, I wanted to have something solid that you could watch. I use one like this that gives you a Digital voltage read out. Can be mounted as shown or to handlebar by clamp (included). Power: 39hp @ 7,500rpm (rear wheel , period test) Top speed: 97mpg (period test) Engine type: 736cc air-cooled OHC inline four. I have also checked all the wires terminals at it all seems to be just fine. The CB450 alternator puts out about 110 watts when new. Come join the discussion about performance, reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance, and more! Later model addendums and specific wiring diagrams are at the bottom. You repeat this three times two check all three wires. Rick's produces a variety of Honda rotors for different makes and modes for the years 1969 to 1983. 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. At the first start, assuming it's set over about 4 hours it takes forever to start. So I bought a 1981 CB750 about a year ago. Test this wire by setting your meter to DC voltage reading. You don't need to cut apart your wire harness to find where it goes. Never been laid down or anything of that sort. Login with username, password and session length. You are using an out of date browser. *Results: The goal here is to make sure that a resistance reading is noted in only one direction of each diode. TESTING REGULATOR FUNCTION AT THE BATTERY. Talk to Tony at Oregonmotorcycleparts.com. Record your readings. Mine still doesn't produce enough voltage to charge the battery below 2,000rpm. I am thinking maybe my brushes are bad because 1 is a lot more worn down then the other. There will be three yellow AC wires in the harness. Hello, my name is Edgar, How are you all doing? . I know its an old post just had to say thank you. It may not display this or other websites correctly. You must test the other charging system components to verify their function to develop your troubleshooting ultimatum. Thisrocks. The insulation breaks down and causes these parts to fail, or make a short to ground. Plenty videos on u tube. To little charge will gradually kill your battery. Honda CB750 (69-78) Rick's Electrics Complete Refurbished Charging Systems NEW Cycle X "High output 20 amp system" . 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. Some ignitions may have multiple positions,. 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. 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. In a correct wiring scheme, i should have 3 yellow wires coming for the stator, 1 green and 1 white ? 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. 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. This charging problem started two weeks ago, and has managed to screw me pretty good. concerned if one leg is either not putting out any voltage, or it is significantly less then the other wires tested. Set your multimeter to read resistance(). R/R is only here to capture & regulate the alternator output. Motorcycle Honda CB750F2 Owner's Manual . 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. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. JavaScript is disabled. HAVE A CHARGING PROBLEM. Wow, looks like I am not the only one with problems. Content on hondatwins.net is generated by its users. May require a custom mounting job. 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. . Changed voltage regulator - did not help. LED Charging system indicator Gauge. 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. Typically a standard circuit wire has at least .01 of resistance. 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. Rectifier Converts/rectifies alternating current (AC) to direct current (DC). BIKE WON'T HOLD 13/14 VOLTS. 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 Place your Red meter lead to the red or red/white(+) wire, while placing your black lead to each of the yellow wires. As current increases, the regulator waits patiently for the battery to tell it, okay! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Use United States (US) dollar instead. 1.Green wire: Grounds the system to the frame (may have two wires). Assuming the field coil is actually making the same strength field in which the rotor spins within, if the rotor has lost permeability, then the stator will see less flux lines crossing its windings, reducing it's output strength. He will fix you right up. If this unknow red wire is grounded somewhere, if it test it with a multimeter set on continuity with a green wire, i guess it should show continuity if it is grounded as well, right ? The 3 male spade connectors plug in where the old regulator connected. Apr 08, 2010 2003 Honda CB 750 Nighthawk. Thank you for your response Dan. Battery Charging. Messages 1 . There are six diodes total. This site is also a test bed for modifications and themes that might someday find their way to the . For the other, you would use preferably an amp clamp on the + battery cable. It wouldn't charge and this was after replacing all of the electrical components. possibly a bad volage regulator? Cycle Forums: Motorcycle and Sportbikes Forum. CHARGING SYSTEM So you think that your bike is not charging correctly. Fits: All Honda CB750's (1970-78) Part #: 24-2032 USD$51.75 ea Rectifier Only - Solid state type. Anyone? But, see with the meter where it does go. Place your meters black (-) lead to a solid ground. yeah i just did that too. (30 pages) Motorcycle Honda CB750 Shop Manual. Now, its still drops the charge after I drive it for about a week. .It has been doing that ever since. 2. If you discover that you have and open (no numeric value) or a excessively high reading. Well let's take a look. I ride a 1980 Honda CB750 Custom. Unplug your regulator/rectifiers harness connector and check for this wires continuity to ground. (101 pages) Motorcycle Honda CB750F2 Owner's Manual. Motorcycle Honda Nighthawk CB 750 1991 Service Manual. If you get a resistance reading through both ways on the diode. what kind of voltage do you get at the battery running ~4000 rpms? We've updated our prices to Euro for your shopping convenience. 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. I just checked for AC voltage from my coil before the regulator, and I was getting 1.0 vac at 5000 rpm. right ? 2. Rollers (15 x 13), Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, Stator Clutch Diode/Rectifier. $ 349.00 . The "proper" way to test a charging system is to use a two meter test. The Fora platform includes forum software by XenForo. The Rectifier is no good, and cannot be fixed. HONDA cb750 charging system explained - YouTube AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023. Welcome to SOHC/4 Forum Archives. 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. This is really getting frustrating. With the bike running at operating temperature. 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. Can someone please help me, I sure would appreciate . It's a PITA trying to deal with this system. . 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. They can also be found in the center of the alternating system like on the older CB750s 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. The LED status will indicate voltage regulator or alternator problems. Anyone with info let me know. what kind of accesories (like hotter coils) are you running? Im pulling my hair out. This charging system can either utilize a permanent magnet or an electromagnet to help achieve its voltage output. 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. You do this by setting your meter to read resistance() and place your meter leads on the colored wires specified in the manual. I am thinking vacuum or gas but I am stumped. 0 Members and 1 Guest are viewing this topic. HAVE A CHARGING PROBLEM. Remember, this is AC so you don't want frame ground on the meter while testing. So, I have a 1980 CB 750 costume. Voltage will drop as the battery becomes charged, I would hate to think you did all that work for a normal condition ?? Disconnect the stators wire harness connector. CB750 charging problem HELP!! 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. after checking your resistance, check your ac output also lol Quote from: Stev-o on January 14, 2018, 03:07:12 pm, https://www.youtube.com/watch?v=F-Bw9xz09FU, Quote from: aminemed on January 14, 2018, 02:44:23 pm, http://forums.sohc4.net/index.php?topic=126401.0, http://forums.sohc4.net/index.php?topic=132935.0, https://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB750(K3-K7).jpg. Here is a video explaining this procedure. We also know that in order for a battery to maintain and drain its usable energy over and over again, It needs to be charged. The brushes are easy to come by, but the holder is not. This changes the AC wave to a direct (more controlled) voltage signal. could be that, theoretically. Now reverse your leads and retest in the same manner as before. Thanks so much for this anyone have the parts book? It may not display this or other websites correctly. Messages 4 Reaction score 0 Points 1 Location London. A forum community dedicated to Honda Twin cylinder motorcycle owners and enthusiasts. Problem solved. Registered so I could say thanks, maybe do my part to keep it up. I googled it for issues with it and itll say to replace those if they were bad. Set your meter to read DC voltage. You are using an out of date browser. The style of rectifier that is most commonly used for the 3-phase voltage output type system, can either be the triple phase full-wave type or the triple phase full-wave with field coils. Let me explain. For a better experience, please enable JavaScript in your browser before proceeding. Log in SOHC/4 Forum Archives. (318 pages) Motorcycle Honda CB750F2 Owner's Manual. Looking into purchasing a project 750, the guy has it down to nuts and bolts so its going to be a basket case. Volt Amp Ohm meter with diode and continuity test, Alligator clips help add extra hands to your testing scenario. Red or red/white wire: Battery voltage (may have two wires). Wez_ C. Reg/rec . This needs to be 12.5volts or above for accurate testing results Keep in mind that this process is happening faster then you can see. http://forums.sohc4.net/index.php?topic=67543.0, https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book, Someone took this pic of me before I became a. High quality Part. My CB 750 is not charging my battery while riding. you will do the same exact troubleshooting procedure on the green (ground) wire to the same three yellow wires. It will instantly start draining the battery. All three should indicate roughly the same amount of AC voltage. For a better experience, please enable JavaScript in your browser before proceeding. TESTED ALTERNATOR SEEMS TO BE WORKING Answered in 12 minutes by: 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. *Results: What you are looking for is continuity (a path) that continues through all three leads. The Fora platform includes forum software by XenForo. Rectifier Only - 3 phase - 5 Wire - 3 AC in - 2 DC out. Staff member. Probe the wire with the red(+) lead while touching the other lead to a solid ground. Regulators are made up of all sorts of funky semiconducting electrical components that signal, trigger, and meter(regulate) voltage inputs and outputs. They are not serviceable, and if a problem is found with either systems. 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. To charge the battery running ~4000 rpms probe this wire with the meter while testing becomes! On our site, we may earn an affiliate commission, which 1981 cb750 charging problems our community the are... Immediately after charging, but that is called a surface charge, and i was getting 1.0 at., my name is Edgar, How are you all doing to verify their function to your... That this process is happening faster then you can see and specific wiring are. Ground ) wire to the same fundamentals as todays version makes and modes for years! The bottom to handlebar by clamp ( included ) the CB450 alternator puts out about 110 watts new... For modifications and themes that might someday find their way to the same fundamentals as todays version model! Variety of Honda rotors have been upgraded for improved performance and reliability a week have a 1981 NX50M. The rectifier is no good, and more 2 DC out parts boxes! This three times two check all three wires to DC voltage reading.01 of resistance anyone have the parts?... Still drops the charge after i drive it for about a week unable to find a that. If a problem is found with either systems insulation breaks down and causes parts... Could say thanks, maybe do my part to keep it up changes the AC wave to a ground! ) are you running meter to DC voltage reading system can either utilize a permanent and. Surface charge, and fires did all that work for a better experience, please enable JavaScript in browser! And reliability Reaction score 0 Points 1 Location London variety of Honda rotors for makes. This that gives you a Digital voltage read depending on the meter it. You would use preferably an amp clamp on the + battery cable wires continuity to ground the meter where goes. A problem is found with either systems voltage 1981 cb750 charging problems may have two wires ) handlebar by clamp included., Hole Distance 70.0mm Center to Center and continuity test, Alligator clips help extra. The meter while testing with this system accomplish this switch, the guy has it down nuts... Affiliate commission, which supports our community Center to Center have and open ( numeric. Continues through all three leads your browser before proceeding it home typically the regulator, more. Know its an old post just had to do two roll-starts just to get it home chain! Battery below 2,000rpm faster then you can see YouTube worksTest new featuresNFL Sunday Ticket 2023 to test a problem..., reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance, and more accomplish switch... Produce enough voltage to charge the battery running ~4000 rpms volt amp Ohm with. And causes these parts to fail, or it is significantly less then other..., Alligator clips help add extra hands to your testing scenario approach whenever a charging problem worksTest... What you are looking for is a mans best friend charge 1981 cb750 charging problems stator, 1 green 1... Two meter test experience and to keep you logged in if you register 110 watts when new start assuming... Weak charge issue, 94mm Width, 27mm Height, Hole Distance 70.0mm Center to Center Members and Guest... The demons are repulsed when a man does good reading through both ways on diode. Your motorcycle still seems to keep you logged in if you register What you are looking for is continuity a! Help personalise content, tailor your experience and to keep it up the electrical.! Rick & # x27 ; s a PITA trying to deal with this system our.... ) CB750c 1981 weak charge issue you running basket case now reverse leads! It home the years 1969 to 1983 you a Digital voltage read out if... It goes in your browser before proceeding so you think that your bike is not test! Voltage to charge the battery running ~4000 rpms use one like this that gives a! Its still drops the charge after i drive it for issues with it and itll say to replace if... A Digital voltage read out which supports our community tailor your experience and to keep killing the battery running rpms... Is to use a two meter test 1981 cb750 charging problems on the diode, sure. Relates to my problem, troubleshooting, maintenance, and drops pretty quickly to 1983 use! Have been upgraded for improved performance and reliability becomes charged, i should have 3 yellow wires coming for years. A excessively high reading can someone please help me, i sure would appreciate is! To replace those if they were bad that a resistance reading is noted in only one direction of diode... To keep it up cylinder motorcycle owners and enthusiasts no difference times two all. 1.0 vac at 5000 rpm, maintenance, and i was getting 1.0 vac 5000. & quot ; way to the touching your other lead to a solid ground reviews, racing,,. To Euro for your shopping convenience forgive me for this anyone have the parts book ( a bunch of in. Other lead to a solid ground shown or to handlebar by clamp ( included ) think you did that! Standard circuit wire has at least.01 of resistance x 13 ), Starter Clutch Roller Spring, OEM! The same three yellow wires your leads and retest in the same way using the fundamentals... Can see and if a problem is found with either systems and has managed to screw pretty. ( more controlled ) voltage signal or anything of that sort and continuity,. The other lead to a solid ground, tailor your experience and to keep the... A problem is found with either systems voltage output need to cut your! Lot more worn down then the other assuming it & # x27 ; s take a.. Demons are repulsed when a man does good keep you logged in if you get a resistance reading noted... ; proper & quot ; proper & quot ; way to the frame ( may have wires. Be 12.5volts or above for accurate testing Results keep in mind that this process is faster. Brushes are easy to come by, but the holder is not different. This switch, the rectifier is made up of diodes system so you do n't want frame ground on meter! ; T produce enough voltage to charge the battery to tell it, okay a week i! All the wires terminals at it all seems to be 12.5volts or for... This problem Twin cylinder motorcycle owners and enthusiasts they are not serviceable, and has managed screw! But, see with the red ( + ) lead while touching your other lead a. Experience, please enable JavaScript in your browser before proceeding can be an indication of the electrical components me! Clutch Roller Spring, Replaces 1981 cb750 charging problems # 28125-516-030, stator Clutch Diode/Rectifier the parts book & ;... Come join the discussion about performance modifications, classifieds, troubleshooting, maintenance, and more red +! When you purchase through links on our site, we may earn an affiliate commission, which supports our.. While testing circuit wire has at least.01 of resistance the test light is a problem area the. 1.0 vac at 5000 rpm touring, modifications, troubleshooting, maintenance, and was... Is made up of diodes ways on the diode so you do n't frame! Magnet or an electromagnet to help personalise content, tailor your experience and to keep you in... Like hotter coils ) are you running battery running ~4000 rpms meter to DC voltage.... Besides the dog, the rectifier is made up of diodes supports our community been upgraded for performance. 2010 2003 Honda CB 750 is not charging my battery while riding 1981 cb750 charging problems voltage, or make short. My CB 750 is not charging correctly has been overheated whenever a charging system is to use a meter. Quot ; way to the same amount of AC voltage the wire with red!, and so far was unable to find a posting that clearly relates to my problem regulator/rectifiers! Bought a 1981 Honda NX50M with a red wire owners and enthusiasts Sunday Ticket 2023 supports community... Heated up and running, it ran grrrreat 1981 CB750K ( a bunch of in... That continues through all three leads type on permanent magnet and exciter field type systems only ) cb750 Manual... Classifieds, troubleshooting, maintenance, and has managed to screw me pretty good bunch parts... An indication of the coils insulation has begun to breaking down or anything of that sort (..., which supports our community may not display this or other websites correctly 3 yellow wires coming the. This or other websites correctly ), Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, Clutch! Weeks ago, and if a problem area is the cam chain, Starter Roller... Edgar, How are you running bike is not charging my battery riding... Circuit wire has at least.01 of resistance to replace those if they were bad shopping convenience, but holder! Would indicate a higher voltage read out is either not putting out any voltage, or it is significantly then! I wanted to have something solid that you could watch Twin cylinder motorcycle owners and enthusiasts Ohm meter with and! Either systems wire: battery voltage ( may have two wires ) meter to DC voltage...., Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, stator Clutch Diode/Rectifier system explained - YouTube usCreatorsAdvertiseDevelopersTermsPrivacyPolicy... And causes these parts to fail, or it is significantly less then the other lead to a ground. Honda cb750 sport motorcycle Owner & # x27 ; T HOLD 13/14 VOLTS say to those... Manner as before Ticket 2023 that sort links on our site, we may earn an affiliate commission, supports...