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Diagnose my power problems?

glib2011-04-12 05:16:23 +0000 #1
2006 FZ6, purchased last summer with 7k on the odo. Did 8000km on it last summer with zero problems, except near the end when I (stupidly) did too many engine shutdown/restarts in a row while waiting to go through the border to the US. Killed the battery and had to bump it. Battery seemed to come back okay from that, but I put it away for the winter a few weeks later.

Battery was on a tender all winter, then put back in about a month and a half ago. Commuted to work most days, until one day it wouldn't start. I figured I'd killed the battery by running it out the year before and bought a new one a couple of weeks ago. Flash forward to yesterday and it won't start again after putting around in messy downtown traffic for a couple of hours. I gave it a run on the highway for 15 minutes at high rpm to see if the stator was still working, and the battery definitely picked up a charge, just not much. I pulled over and killed the engine, and it started up again, but it sounded like it just barely turned over. This morning it wouldn't turn over at all and had to be bumped again.

Can my stator be only partially bad? It does seem to provide some charge to the battery, just not enough. Bad battery already? I don't understand.

CanaganD2011-04-12 05:30:09 +0000 #2
If you wanna try to solve this yourself, then I recommend picking up a multi meter to measure your voltage across the battery terminals. Princess Auto or Canadian Tire should have analog (analog is sufficient) multi meters for like $20 or less.

Most newerish bikes should at least give 12.5 volts while at idle and go up to 13.2 volts or higher easily when you rev it to 3 grand or more.

A low voltage while your bike is running is a sign that you've got some charging problems.

If you have an Escort radar detector, you could hook the detector to your bike and set it to voltage display mode and ride around and see what the voltage is like. Again, should be over the 12 volt mark while you're moving.

I think there'll be a lot of people here that can help you out once you get some voltage readings.
htdub2011-04-12 06:01:32 +0000 #3
Sounds like a stator issue, my fz6's stator burnt out, after a drop on the stator side. Ran but didn't charge the battery enough.

Like CanaganD said, get a meter, you can measure the voltage of the stator as well, it's pretty simple.
htdub2011-04-12 05:36:18 +0000 #4
From my old fz6 forum post,



Originally Posted by Fred

I recently tested my stator, and I got some very different numbers.

First off, I tested with the stator disconnected from the regulator. If you left yours connected, then we're comparing apples to oranges.

1-2 1-3 2-3

Idle 23 23 23

2500 50 48 49

5500 101 99 101

If you used the same procedure as I did, then your stator is not working.


Thanks for posting your numbers.

I remeasured my stator readings, directly off the stator, on the right setting on the DMM.

Idle, 2v 2v 2v

3000 12v 13v 12v

5000 34v 36v 35v

Way below that it should be, hence my battery getting drained.

I've dropped off the bike at the shop to have a look.

Looking around for a stator replacement. Part no. 5VX-81410-00-00

A stator is $425 CDN, and backordered. $220 US, and about a weeks time to get in.
rawdonflyer2011-04-12 05:48:21 +0000 #5
just remember wwhen checking the stator with the rec/reg disconected to have your meter set on ac voltage



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