RE: Battery Eatter

Yamaha XJ 750 discussion forum:


RE: Battery Eatter

RE: Battery Eatter 
Dennis said 2004-09-13 07:40 
 
I don´t profess to be an expert on m/c charging systems but I am pretty good with cars. Here are a couple of thoughts...
1) Is there a "BATT" display on the warning panel (I have a ´81 Seca 750 too..).
2) Put a voltmeter across the battery terminals while the engine is running. The voltage should be above 12.5 volts to indicate an operating charging system. Im the automotive world, 13.7 - 14.3 v is pretty normal. If voltage is good, likely the battery is bad.
3) Buy a service manual that contains charging system diagnostics. If you have some basic tools and are somewhat mechanical, you´ll find the real problem. 
 
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