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Yamaha 1982 XJ650 Seca (US import)? |
Dont have a manual Voltage reading with the bike at Idle is 14 volts Underload 18.5 Volts. Reading stays steady.Seems a little high. Dose anybody know if this is right. (US import Lights on all the time)cheers 14.4 volts is the no load voltage to compensate for the discharge in maintaining the battery and charging circuits, at load anything up to 22 volts can be expected. If the battery isnt using electrolyte and the bike fires up ok I think you havent got anything to worry about. Early XJ's ran an excitor coil generation system that places an additional load on the regulator anyway so the voltage is going to be higher than a similar modern bike or car. wherever it comes from its 13.8volts at the battery... and ive had lots of different yams. sounds like the voltage regulator is tatered.... if you use it it'll boil your battery dry... regulator is either disconnected or shorted out. I think its under left rear tail/side panel if it has conventional crank mounted generator or if its 'pumpkin' style ( under carbs) the reg is built into alternator (haven't worked on one for 'twenty several' years) Update, I had a look at one yesterday. Its a conventional alternator mounted behind cylinders. regulator is probably where I said. May be built into rectifier unit (will have 7 wires coming out of finned alloy box) 18.5 is a little high for a 12v system. Generally 12v systems peak at 14.5v so you may have a rectifier problem. Ex Divvy owner. not 100% sure on your problem but I know where you can get the answer. www.xjbikes.com. It's a group for just these bikes. I belong there myself and have found tons of useful info in repairing my own bike. |
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