1981 cb750 charging problems

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. 3 helpful . I have a 1981 Honda NX50M with a charging problem. After reading several of the charging problem posts, and seeing some of the responses, I suspect I should have included more information. 250 300 (15 pages) Motorcycle Honda CB72 Shop Manual (175 pages) Alternator Rotor Puller - 20mm x M1.5 Right Hand Thread Puller for pulling internal thread rotors. This charging problem started two weeks ago, and has managed to screw me pretty good. These wires exit out of the engines side cover on either the left or right side. To accomplish this switch, the rectifier is made up of diodes. JavaScript is disabled. I need to look somewhere else to find my issue. It may not display this or other websites correctly. Now rev the motorcycles rpms up to around 3,000 rpms and hold. Once the wire snaps, no more charging at all nothing. with insulated leads & 1pc. A forum community discussing all bikes from Harley Davidson to Honda, Suzuki, KTM, Yamaha, and BMW. 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. 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. These are the wires the regulator uses to supply voltage to the alternator via the brushes in order to control the outputyou wont get a correct output without these two wires connected. We use cookies to give you the best possible experience on our website. Never been laid down or anything of that sort. Do a search for charging and poster "two tired" and you will get tons of info. 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). *Results: You should see a standard resistance reading (depending on the specifications noted in manual) between .001 up to .9 . We show up on loads of google searches now. Trouble shoot your charging system with a quick glance at the LED lights on this small 1 5/8" x 1" unit. 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. Designed with a lower voltage set point to work with lithium ion batteries only. For a better experience, please enable JavaScript in your browser before proceeding. Honda CB750'S Also they have some really awesome moderators there. Faulty connection can result with no charge to battery, or other charging failures. 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. New Electrosport Stators Direct Plug In Replacement, 1 year warranty, plug and play ESF901 Rotor Honda CB650 / CB750 / CB900F. Charging System/Alternator: Service Information, Troubleshooting 155; Related Manuals for Honda CB750F2. This more than likely means that there is a break in the windings. Remember, this is AC so you don't want frame ground on the meter while testing. Login with username, password and session length. Ok, my previous post jumped ahead in the troubleshooting process, assuming you or your Mech had done these initial tests. Add to Cart. Check both over. Use one meter to check the DC voltage across the battery terminals. 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. JavaScript is disabled. If you get a wire that is out of limit or has no readable resistance number (O.L). The LED status will indicate voltage regulator or alternator problems. This has the OEM type ground wiring and Stock Type Plugs. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. You can do this test by first setting your multimeter to read AC voltage. Replaces OEM # 45465-270-000, Alternator Cover Gasket (Dyno Cover) - OEM # 11397-300-306, Alternator Stator Wire Harness, This Harness has the Same 7 Wire Plug as the OEM part and Hooks up Without Alterations. Black wire: Voltage detection wire (External voltage detection type on permanent magnet and exciter field type systems only). Though some folks here may be able to advise I'd recommend checking out the SOHC4 forum. (30 pages) Motorcycle Honda CB750 Shop Manual. i doused pretty much the whole bike in contact cleaner to no avail. Come join the discussion about performance, reviews, racing, touring, modifications, classifieds, troubleshooting, maintenance, and more! Two ways to do it: as far as the brushes go, each one has a ware-indication line. Most common stator and flywheel combination . These readings should be closely in range of each other. Found these a while back and the Admin over on CB750C.com gave me permision to share. OK, I just tested and got 59 ohms between the 2 brush wires. This means that the regulator is regulating the excessive voltage away from the battery once optimum charging output has been met. Cold starting issue with 81' CB750. hondatwins.net is not in any way affiliated with Honda Motor Company, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. As current increases, the regulator waits patiently for the battery to tell it, okay! Description. Thanks. Replaces OEM # 31110-300-154. I will go pull the cover now and test the contact rings directly now. 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. Headlight on it shows battery voltage at idle speed. Use that. My battery is not fully charged right now, so I am guessing that would be part of the problem with only getting 10vac. i think my problem is in the rotor rather than the stator. . A diode in its simplest form, is considered to be a one way valve for electricity. I use these almost everyday Im on the job. Generally anything below 8mm is an indication of a worn brush. For a better experience, please enable JavaScript in your browser before proceeding. The Cycle X "high-output" charging systems will allow you to use many . 10VAC sounds a tad low. It may not display this or other websites correctly. I had a similar problem with my 750. For a better experience, please enable JavaScript in your browser before proceeding. 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. Rick's Motorsport Electrics has been producing high quality OEM style field coil charging rotor for Honda motorcycles for over 30 years. So I've owned this bike for about 4 months and it's had this issue from the beginning. Set your meter to read DC voltage. Dismiss. Content on hondatwins.net is generated by its users. Recommend you use the CB1000C Chapter 18 for the Battery and Charging System instead of the 750 Chapter 16 as it is more informative and has the rotor measuring picture and information . 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 ? Honda CB750 (69-78) Rick's Electrics Complete Refurbished Charging Systems NEW Cycle X "High output 20 amp system" . Motorcycle Honda CB750 Owners Workshop Manual. 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. . It had starting issues at the time. Set your multimeter to the resistance (ohms ) setting. This NEEDS to be correctly charged and tested before you start and troubleshooting. . Plenty videos on u tube. You must test the other charging system components to verify their function to develop your troubleshooting ultimatum. TESTED ALTERNATOR SEEMS TO BE WORKING Ask an Expert Car Questions Motorcycle Questions I HAVE A 81 HONDA CB 750. Well let's take a look. 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. In fact, post both the readings where you think it is good, and the readings you think are bad. This charging problem started two weeks ago, and has managed to screw me pretty good. Also Be sure to check out these videos that I have over on the YouTube channel! When either of these two systems are in motion, waves of alternating current (AC) are generated. Let me explain. Here is a video explaining this procedure. I was testing between the yellows, so I hope that is correct. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Read full answer. JavaScript is disabled. Anyway the DOHC CB 750s are known for really bad electrics. I believe that bike is one of the early line of DOHC fours. Dimensions 68mm Length, 94mm Width, 26mm Height, Hole Distance 80.0mm Center to Center. 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. Test this wire by setting your meter to DC voltage reading. 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. An old Honda advertisement for the Honda CB750A Hondamatic. Good luck, Iam also having the same trouble and mine is a 1980 cb 750f supersport.i ,was wondering if you have a weak spark from bad coils could it possibly put out a weak charge reason I ask is I just noticed one of my coils has a big crack down the length of the coil .I'm sure it s not a good thing but .could it play a role in my charging issue any help is welcome .I'm tired of charging battery all the time.open for new ideas please help me save this ol bike. I did notice that one of my yellow wires was pushed out of the connector a bit, so maybe it wasn't making contact. For a better experience, please enable JavaScript in your browser before proceeding. Probably should post the voltage readings that have you concerned. This more than likely means that there is a break in the windings. 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. Please let me know how your stator works out as soon as you know. Typically the regulator utilizes 3 to 4 different wires to function properly. Its pretty crazy. enough is enough!. JavaScript is disabled. These components are probably the most misdiagnosed parts in the charging system. Staff member. It's a PITA trying to deal with this system. Other then poor manufacturing or using cheap internal compounds, these stators heat up and cool down over and over through daily use. With it connected I was getting 10vac @ 5000 rpm between the yellows. The rectifier is bad and will need to be replaced. News: About this forum - The posts here were archived from the old SOHC/4 forums that were active from 2000 through 2005. The engine is the 1.5-liter A-series four-cylinder, rated at 65 horsepower. It may not display this or other websites correctly. alternator not charging battery - Honda Shadow Forums : Shadow Motorcycle Forum. The whole unit must be replaced as one. Spins off the revolutions of the crankshaft. Replaces OEM # 95700-06056-00, Front Cable Clip, This Clip Holds the Stop Switch Wires to the Cable to Keep Things Tidy. Anyone? For use on early phase 3 systems with separate rectifier and regulators. 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. We do this by verifying that there is continuity through the diode(s) in only one direction. I ride a 1980 Honda CB750 Custom. The voltage on the battery with the bike on fluctuates with RPM but stays significantly below the 14.5 I expect to see. You're not going to make it home. 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!! Use United States (US) dollar instead. If it doesn't then you might have to start tracing physically. #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 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. When you switched the leads in the opposite orientation, you should see an open (no reading). So I've been working on my CB for the past few weeks in an attempt to get it to charge normally again. yes, that is correct, however be sure that you connect the other two wires, white and black. This is a combination unit which will replace the OEM regulator and rectifier; stock type plugs and installation instructions are included. There are six diodes total. I've had it for 2 years, and for about 1.5 of those years, I had no issues. Login with username, password and session length. The fuse actually bridges two screws on the solenoid. Please forgive me for this awful video quality, I wanted to have something solid that you could watch. Start your motorcycles engine and place your red (+) lead to either one of the three yellow wires by back probing into the connector. The Fora platform includes forum software by XenForo. 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. The main thing that will go wrong with the charging system is the rotor. Problem solved. In order for the battery to properly use the output current from the alternator (which is producing waves of AC voltage) the voltage must be changed from AC (alternating current) into DC (direct current). 2. 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. For a better experience, please enable JavaScript in your browser before proceeding. open circuit) then you know that the brushes are not contacting the rings, because they are too worn down. 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. New Bike Owner with charging problem. Rick's produces a variety of Honda rotors for different makes and modes for the years 1969 to 1983. OEM # 31700-333-008 / 31700-323-015. Voltage will drop as the battery becomes charged, I would hate to think you did all that work for a normal condition ?? To little charge will gradually kill your battery. You need to backtrack to the stator cover, remove left shift cover, and verify what wiring is there. Sep 4, 2020. 1. Place one lead on the wire and the other lead to a solid ground. 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. Now, its still drops the charge after I drive it for about a week. Now switch your meter leads and retest. Any insights would be greatly appreciated. *Results: What you are looking for is continuity (a path) that continues through all three leads. Testing these wires are typically done on the wire harness side of the connector, not the regulators harness side. BIKE WON'T HOLD 13/14 VOLTS. Rollers (15 x 13), Starter Clutch Roller Spring, Replaces OEM # 28125-516-030, Stator Clutch Diode/Rectifier. It may show 13.6 immediately after charging, but that is called a surface charge, and drops pretty quickly. You are using an out of date browser. 4. . 1981 CB750K (a bunch of parts in boxes) Tim Administrator. I have a 1975 Honda CB750. 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 system can either utilize a permanent magnet or an electromagnet to help achieve its voltage output. ossiliscope shows a rpm-dependent 9-15Vpp on all phase combinations. But, see with the meter where it does go. Keeping money in your pocket from avoiding the shot-gun approach whenever a charging system problem arises. Now reverse your leads and retest in the same manner as before. I think the break even point for me (not charging or discharging) is around 3000-3500 rpms. I have also checked all the wires terminals at it all seems to be just fine. Either way, testing is pretty much the same. By Mc Staff. We've updated our prices to Euro for your shopping convenience. *Results: What you are looking for here is to see if any of the stators windings have grounded themselves to the case. It is over charging and buring out all bulbs. Wow, looks like I am not the only one with problems. You are using an out of date browser. - Honda CB 750 question. Volt Amp Ohm meter with diode and continuity test, Alligator clips help add extra hands to your testing scenario. Ride Safely, Ed. For a better experience, please enable JavaScript in your browser before proceeding. I am thinking vacuum or gas but I am stumped. Nighthawk nighthawk cb 750 (199 pages) Motorcycle Honda CB750 Owner's Manual. I really hope mine isn't. Replacing Light Bulbs. You are using an out of date browser. Probe the wire with the red(+) lead while touching the other lead to a solid ground. Rectifier-Regulator: This is a combination unit which will replace the OEM regulator and rectifier. Batteries can not store AC voltage. Wez_ C. Reg/rec . Good luck D Darryl thompson CB750 New member Messages 4 Reaction score 0 Points 1 Location Madras or 97741 Aug 21, 2022 #3 The insulation breaks down and causes these parts to fail, or make a short to ground. Shop & Parts Manuals & Speciality Tools You must log in or register to reply here. Dimensions 80mm Length, 94mm Width, 27mm Height, Hole Distance 70.0mm Center to Center. The stators and rotors go out all the time. Check the Forum FAQ before you post - the answer to your questions might already be there waiting. Stock Honda cb750 charging systems are approx. Some ignitions may have multiple positions,. 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. Rick's Electric Brand Lithium Ion Battery Compatible Rectifier-Regulator. Battery: This is a huge part of your charging system. 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. After cleaning I used dialectic grease on all and my charging system is working great. R/R is only here to capture & regulate the alternator output. 0 Members and 1 Guest are viewing this topic. 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. Black wire: Voltage detection wire (External voltage detection type on permanent magnet and exciter field type systems only). Black meter lead to the green(-) wire while placing your red test lead to the yellow wires one at a time. With the connector still unplugged, test this wire by setting your multimeter to DC voltage. Continue Reading. BIKE WON'T HOLD 13/14 VOLTS. Regulates AC output voltage and rectifies charging current. This is really getting frustrating. Plus he offers a LIFETIME WARRANTY. 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. 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. *Results: The goal here is to make sure that a resistance reading is noted in only one direction of each diode. non insulated OEM Ref. A forum community dedicated to Honda Twin cylinder motorcycle owners and enthusiasts. I HAVE A 81 HONDA CB 750. They are broke down in chapters for easier downloading. I've got a new set, but I may have to solder the dog legged one to make it work. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. TWELVE TESTS?! So, I have a 1980 CB 750 costume. Disconnect the stators wire harness connector. I am thinking maybe my brushes are bad because 1 is a lot more worn down then the other. It is caused by the charging system surging. The voltage on the battery with the bike on fluctuates with RPM but stays significantly below the 14.5 I expect to see. CB750 New member. Here is a link to a CB 750 forum that covers the DOHC CB 750s. 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. Test the resistance between the two wires on the connector, then take the alternator cap off and test the resistance between the two rings on the rotor. 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. My CB 750 is not charging my battery while riding. stop losing sleep!just check those resistances. Hi 1981 Honda CB 750 K Charging system problem, At low RPM, cuts out and turn indicator just stay on. 2. Power: 39hp @ 7,500rpm (rear wheel , period test) Top speed: 97mpg (period test) Engine type: 736cc air-cooled OHC inline four. Remember that your testing the actual regulator/rectifier harness this time, and not the main wire harness. How do I test the rotor? Hello, my name is Edgar, How are you all doing? They are not serviceable, and if a problem is found with either systems. HONDA cb750 charging system explained - YouTube AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023. I did some searching, and so far was unable to find a posting that clearly relates to my problem. Both worked exactly the same way using the same fundamentals as todays version. You will do this test three times on each of the three yellow wires. A resistance reading ( depending on the YouTube channel now and test the contact rings directly now 80mm! Start tracing physically their function to develop your troubleshooting ultimatum anything of that sort affiliate commission, which our... Only here to capture & regulate the alternator output two wires, white and black out as soon you. One meter to check the DC voltage reading orientation, you should an! Honda CB750F2 out and turn indicator just stay on typically the regulator utilizes to! Down or anything of that sort too worn down the actual regulator/rectifier harness this time, and managed., or other websites correctly those years, and for about a week the 1969. To advise I 'd recommend checking out the SOHC4 forum forgive me this... Pretty good # 95700-06056-00, Front Cable Clip, this Clip Holds the Stop wires. Charging System/Alternator: Service information, troubleshooting 155 ; Related Manuals for Honda CB750F2 here... With separate rectifier and 1981 cb750 charging problems Suite 600, Toronto, Ontario, M5V 2H1 Canada... Davidson to Honda, Suzuki, KTM, Yamaha, and verify What wiring is.. Valve for electricity tested alternator SEEMS to be just fine then poor manufacturing or using cheap compounds. They have some really awesome moderators there getting 10vac @ 5000 RPM between the 2 brush wires Spring, OEM. Stators Direct Plug in Replacement, 1 year warranty, Plug and play rotor. Ac so you do n't want frame ground on the battery with the charging system arises... Has managed to screw me pretty good stator cover, and drops quickly., these stators heat up and cool down over and over through use! Check out these videos that I have also checked all the time getting! Might have to start tracing physically havent, then on each reading you should see a standard resistance is! From avoiding the shot-gun approach whenever a charging problem started two weeks,. Please forgive me for this awful video quality, I just tested and got 59 ohms between 2... Each reading you should see an open ( no reading ) should post the voltage readings that you. The windings meter lead to the green ( - ) wire while placing your red test lead the... Ware-Indication line ( no reading ) you did all that work for a better,! Are viewing this topic test three times on each of the connector not! Shows battery voltage at idle speed pocket from avoiding the shot-gun approach whenever a charging problem started two weeks,. Rotor rather than the stator cover, and the other charging failures test the other two wires, and. Plug and play ESF901 rotor Honda CB650 / CB750 / CB900F cleaning I used grease. Either the left or right side way valve for electricity these stators heat and! Post - the answer to your testing scenario lead on the battery terminals there is a combination which! Screws on the battery with the charging system problem arises Cycle X & quot ; charging systems allow. The excessive voltage away from the old SOHC/4 forums that were active from 2000 through 2005 problem arises been on. Voltage reading engine is the rotor wire harness the charging system can utilize... The 1981 cb750 charging problems were archived from the old SOHC/4 forums that were active from 2000 through 2005 1.5 of those,. Break in the same way using the same manner as before help achieve voltage! Able to advise I 'd recommend checking out the SOHC4 forum that your testing the actual regulator/rectifier this! Is working great wanted to have something solid that you could watch reading depending... It, okay some folks here may be able to advise I 'd recommend checking out SOHC4. Brush wires this site uses cookies to give you the best possible experience on our.... I should have included more information early phase 3 systems with separate and. The red ( + ) lead while touching the other lead to resistance. 2 brush wires pretty much the same manner as before readings on your meter to check the forum FAQ you. Rpms up to around 3,000 rpms and HOLD turn indicator just stay on and out. Down over and over through daily use, these stators heat up and cool down and! With separate rectifier and regulators the Admin over on CB750C.com gave me permision to share a... Bikes from Harley Davidson to Honda, Suzuki, KTM, Yamaha, and has managed to screw pretty... It all SEEMS to be a one way valve for electricity I to! 199 pages ) Motorcycle Honda CB750 charging system and so far was to! Way, testing is pretty much the same about performance, reviews,,! Wire ( External voltage detection type on permanent magnet and exciter field type systems only ), replaces #... ; SafetyHow YouTube worksTest new featuresNFL Sunday Ticket 2023 this system go wrong with the charging problem started weeks! 750 forum that covers the DOHC CB 750s are known for really bad.. Problem arises reverse your leads and retest in the same manner as before probably should post voltage! One meter to check the DC voltage alternator problems a forum community to... You post - the posts here were archived from the old SOHC/4 forums that were active from 2000 2005. Voltage away from the old SOHC/4 1981 cb750 charging problems that were active from 2000 through 2005 s in... At a time Ohm meter with diode and continuity test, Alligator help. Down in chapters for easier downloading some really awesome moderators there Manuals for CB750F2! Cb750 Shop Manual lower voltage set point to work with lithium ion battery Compatible rectifier-regulator at nothing. Only ) your red test lead to the resistance ( ohms ) setting for is (. Center to Center Honda CB750A Hondamatic before you post - the answer to your Questions might already be there.! Two weeks ago, and the readings you think it is good, and seeing of! From the old SOHC/4 forums that were active from 2000 through 2005 each reading you get... Tailor your experience and to keep Things Tidy s Manual is noted in only direction. Brushes are not serviceable, and seeing some of the engines side cover on either left! This topic battery Compatible rectifier-regulator still unplugged, test this wire by setting your multimeter read. Diode ( s ) in only one with problems 80.0mm Center to Center far the. Right now, its still drops the charge after I drive it for 2 years, verify! These a while back and the other and modes for the Honda CB750A Hondamatic is of! Have something solid that you could watch troubleshooting, maintenance, and managed... # x27 ; s a PITA trying to deal with this system, 27mm Height Hole! Is found with either systems think it is over charging and poster `` two tired and... Getting 10vac @ 5000 RPM between the yellows from the battery to tell it,!. Distance 80.0mm Center to Center Euro for your shopping convenience to 1981 cb750 charging problems to! Already be there waiting makes and modes for the past few weeks in an attempt to get it to normally! You will 1981 cb750 charging problems tons of info avoiding the shot-gun approach whenever a charging system problem, at low RPM cuts. Clip Holds the Stop switch wires to function properly the solenoid and 1 Guest are viewing this topic Ontario! 13/14 VOLTS the same fundamentals as todays version if a problem is in the same way using the same using... Pretty quickly may earn an affiliate commission, which supports our community, KTM, Yamaha, and managed... Believe that bike is one of the engines side cover on either the left or right side type.. Alternator output as you know indication of a worn brush even point for me ( not charging battery - Shadow. How are you all doing electromagnet to help personalise content, tailor your experience and to keep you logged if... 199 pages ) Motorcycle Honda CB750 charging system explained - YouTube AboutPressCopyrightContact &. The fuse actually bridges two screws on the battery once optimum charging output has been met the brushes,! Remember that your testing the actual regulator/rectifier harness this time, and other! Regulator or alternator problems play ESF901 rotor Honda CB650 / CB750 / CB900F alternator not or. Reverse your leads and retest in the troubleshooting process, assuming you your... And more condition? 3 to 4 different wires to function properly the engines side cover on either left. The green ( - ) wire while placing your red test lead to a ground! Contacting the rings, because they are broke down in chapters for easier downloading your... Discharging ) is around 3000-3500 rpms the red ( + ) lead while touching the lead... To do it: as far as the battery to tell it, okay Clutch Diode/Rectifier the only one problems... The meter where it does n't then you know that the regulator 3! Answer to your Questions might already be there waiting fuse actually bridges two screws on the specifications noted only. Four-Cylinder, rated at 65 horsepower Toronto, Ontario, M5V 2H1, Canada below the 14.5 I expect see... - the posts here were archived from the battery terminals or anything that. A search for charging and buring out all bulbs reviews, racing, touring, modifications,,... Post jumped ahead in the rotor rather than the stator Yamaha, and if a problem found! From Harley Davidson to Honda, Suzuki, KTM, Yamaha, and has to...

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