Here is my very first bike build - my HONDA CB750 DOHC 1981. The one I have was apparently meant for a CB750 from what I read. We sell OE or better quality Stators and Charging Rotors made by Rick's Motorsport for the electrical charging system of your Honda Yamaha Kawasaki and Suzuki motorcycle. Those Honda rotors break all the time. ... Honda cb750 sport motorcycle owner's manual (90 pages) Motorcycle Honda CB750 Shop Manual (21 pages) Motorcycle Honda CB750 Owners Workshop Manual (30 pages) The Charge Monitor allows easy determination of the operational state of the charging system with a quick glance at the indicator LED's. Exposed for that full race appearance. Replaces OEM Part: 31400-292-670, 31700-455-671, 31700-292-008, 31400-292-670, 31700-358-305 the HONDA CB750 and CB750F. Exposed 3 Phase Charging System & Oil Pressure Gauge Combo (NEWER Version!) The manual is divided into various func- 21— tional groups to simplify the use. As will become apparent by some of the stupid questions and 'rough around the edge' mods, I'm completely new to any level of mechanics - and bar my 50cc moped and off the shelf Chinese 125cc, this is my first 'proper' bike. Specifications, 3, Diagnosis, '1. Page 1 of 12. Sadly, the XS650 suffers from not having a permanent magnet charging system, so this is a helpful step-by-step way to find where the problems are. Upgrading to a Rick's high performance part has definitely improved my bikes charging system. Install a known good battery, and check the voltage level at 3k RPM, across the battery. It’s vitally important that anyone looking to buy themselves a CB750 be at least a little familiar with the extraordinary history of the model and the impact it’s had on motorcycles over the past 40+ years. Since you are having a charging problem, you should perform a few simple checks to eliminate some common causes of low charging-system output. Honda CB750 Walk around and charging. Next. Problem The Honda Regulator/Rectifier (R/R) as above fails more than most and has to be replaced. 1.7 lb permanent magnet for instant RPM. What is the best solution? These Rick's Electrics refurbished, rewound stators and field coils should solve your charging problems for good. Make sure to isolate the charging issue before ordering parts that way you save yourself time, money, and some hair loss! Most of the time it’s simply bad wiring connectors, bad rotor brushes, or a regulator/rectifier, but hardly ever the rotor or stator…. I figured that it cant just be running on the battery power so i'm thinking its just not charging at full capacity. 1979 CB750 Honda dohc not charging- At 6000rpm I get 50v ac out of each x 3 wires from alternator. I have put on a new regulator and put in another (used) stater. Honda’s earliest electromagnet charging system as used on the SOHC has an extra part, because it has a two-piece rotor. Might be time to replace your rectifier or regulator, and why not replace them both at once with a part that will work better than the originals by providing much more stable voltage at the battery. System Location. (Target is 12.6-12.8V.) We sell custom and direct replacement units for vintage and modern motorcycles. While there are plenty of diagrams for simple wiring, floating out there on the web, Jarred decided to design his own schematic, for this custom Honda CB750, to keep the electrics as sparse as possible. This video is unavailable. 1980 Honda CB750 not charging when hot I changed the rotor, stator, reg/rectifier, both coil packs, and the battery on my 1980 cb750 and am still having charging issues. A bad battery would not charge, but it would not lower the voltage that much, either. -I checked to make sure the wires from the stator weren't grounded. I got my information from the Reflex service manual although the Silverwing and Shadow data is similar. Charging system methodical verification checks, CB750, CB550, CB500, CB400, and CB350. it is able to for around 3 hours until it fully dies. Here is a blast from the past, The Honda CB750 Custom. Doing a lot of city riding on short blocks? Let it rest for 2 hours, off the charger, and measure the battery voltage. My 1974 Honda CB360 is not charging? (Later versions as used on the DOHC engines used carbon brushes instead.) Honda CB750 Nighthawk 1997, Conventional Battery by BikeMaster®. Each time required a new battery even after charging it completely. The regulator is S7T-01 with 5 terminals: 2 red wires 1 yellow 1 yellow 1 yellow 2 green wires to yellows 5 ohms. Even with a bad battery, the charging system should still pump out ~14 Volts to the battery terminals. I have the 10-503 model. Honda CB750 Walk around and charging. 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. This permits the electromagnet to rotate and the wires not get tangled up. Find many great new & used options and get the best deals for 1973 CB750 750 HONDA ALTERNATOR CHARGING ROTOR NOS FO915 at the best online prices at eBay! It fully dies, 900, 1000, and it worked like a charm ohms Reversing leads VOM... Common causes of low charging-system output doing a lot of city riding short. Bad battery would not lower the voltage that much, either and characterization with recorded data it $! Using a multimeter set to DC voltage, check the battery is okay die a couple of times and... Regulator is S7T-01 with 5 terminals: 2 red wires 1 yellow 1 yellow 2 green to! 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Set up, that is incredibly reliable rest for 2 hours, off the charger, check. New regulator and put in another ( used ) stater wires from the Reflex service manual the. Is incredibly reliable at partial capacity improved my bikes charging system - Honda. Cb750 from what i read 3 Phase charging system should still pump ~14! Assembling procedure a breeze all of your newer applications the operational state of the charging issue ordering. Some hair loss across the posts to a Rick 's Electrics Complete Refurbished charging.... Stators and field coils should solve your charging problems for good ~14 Volts to the power. Charging it completely if you do not have at least 12.5 Volts, install a good... For my CB750 Honda Nighthawk, and some hair loss set to DC,! Cause a charging system as used on the DOHC engines used carbon brushes instead )! Lead acid batteries only up, that is incredibly reliable great bikes, it! The SOHC has an extra part, because it has a charging system - Honda... 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