I need to learn japanese.

So, because motorcycles were put upon this earth solely to make me batty, the damn SVS started right up with its own battery this time.

Battery sitting innocently in motorcycle (not running): 13.3V
Motorcycle idling at 1200 RPM: 14.1V
Motorcycle at 5000 RPM: 13.3V

The service manual recommends checking the voltage regulator if the voltage is under 13.4V (or above 15V) at 5000 RPMs. This seems like a good plan because, to my limited brain, one’s voltage at 5k RPM should not be lower than one’s voltage at idle.

Sadly, the section on testing the voltage regulator is written in some language that approximates English, but doesn’t quite get there. Considering that I’m, well, “not experienced enough” with the voltmeter (the nicest way I could think of to say that I don’t know amps from a hole in the ground), this isn’t useful.

On to search the internet for a flowchart. The fun never ends.

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3 Responses to I need to learn japanese.

  1. Michael A says:

    The charging output seems to be OK. BUT keep in mind two things that I have learned the hard way: 1) Double and triple check all the connections ESPECIALLY the ground wire. It comes of the negative side of the battery and vanishes behind the right frame lower and is attached to the engine. Corrosion loves to start there, and a high-resistance ground can cause all sorts of strange things to happen. I’ve run a second ground just as a back-up. 2) The battery COULD have an internal short or broken plate. When everything is just right, it will test out normally. But under vibration, the plate shorts out one cell and you loose about 1.2 volts right off the top (or more…)! Very hard to diagnose.
    Also, may be a good idea to check the connections to the voltage regulator. It lives in the tail on the (I think) the right side and gets a lot of crap slung onto it from the rear wheel over time. Best of luck!

  2. Lawence says:

    this is all good and all but I need to find out how to check a regulator for shorts or to see if it’s causing shorts in the harness by itself? Any one got any ideas, email me please! I NEED HELP TOO!!!!!

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