Kawasaki ER6 charging problems

[marlc0]

So, as per the title. A little backstory, too.

Bike had been stood for a few months over winter, took it for it's MOT, passed no issues, then rode it 30 mins into town, just after shutting the engine off, went to re-start it, and the battery was dead. Got a jump start on it, and it sat running fine for 5 mins, then 2 mins after setting off, it died, and i had to get it towed home.

Changed the battery, charged it, and ran the bike up and checked it with a multi-meter, and it's only just to say charging it, when i put any lights on, the level just dies off.

So, backstory over, i know it's not charging properly, I've had a look for spares, it's not just a one part change out, so what does BCF think i need to spend my money on, generator bits, or a reg/rec?
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2010 Kawasaki ER6-f - Given to the Mrs.
2016 Triumph Tiger 800

[Islander]

Voltages at the battery terminals with the ignition on, the engine idling and revving at 4-5k?

[Taught2BCauti...]

If you don't know exactly what to check for or how old your battery is, the best way forward is to start with a known good battery and check the voltages like Islander said.

Charging systems won't usually charge a duff battery, and that is normally the cheapest component.
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Honda Varadero XL125(V8)
www.TheFutureIsHere.eu

[marlc0]

Okay, some volts for you.

With the ignition off, and been off charge for a few days, it was 13.16V

On idle, 12.28V
sitting between 3-4K, 12.28V

This is a band new battery, about a month old, so no concerns about that, so i'm thinking it's the bike.

Now what do you think i should do?
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2010 Kawasaki ER6-f - Given to the Mrs.
2016 Triumph Tiger 800

[RhynoCZ]

Check the stator gives you AC voltage out. There is no charging going on at the moment as the voltage is the same no matter how high you rev it. If you get AC voltage out of the stator, then your rectifier is dead. A rectifier is a diode that converts AC to DC, if the diode is dead, no current nor voltage will get past the dead rectifier.

I'm pretty positive it's the REG/REC unit. But, check the stator first, just in case.

Kawasaki p.n. 21066-0705 (pretty generic part = not expensive)
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Islander]

[Taught2BCauti...]

Disconnect the Reg/Rec and look for the 3 yellow wires that come from the alternator. Label them 'A', 'B', and 'C'.

Now with the multimeter set to read AC Volts and the engine ticking over, check the voltage from A - B, A - C, and B - C.

The readings you get will help to eliminate the alternator windings and the Reg/Rec without taking anything else apart.
____________________
Honda Varadero XL125(V8)
www.TheFutureIsHere.eu

[Robby]

It'll be a dead reg/rec. I recommend changing it for a MOSFET one. Second hand is ok, MOSFET reg/recs are tough.

[marlc0]

Changed the reg/rec for a new unit, and it's still not charging. Probably should have checked the alternator output first, really.

So, what's next guys?
____________________
2010 Kawasaki ER6-f - Given to the Mrs.
2016 Triumph Tiger 800

[RhynoCZ]

Well, check the stator gives you AC voltage, which I suspect it doesn't. You have to do the AC test with the engine running. The Ohm test (resistance) is done with the engine off.

Do as Taught2BCautious says, the 3 yellow wires. The alternator cover is on the sprocket side, there will be a black cable going out of the engine cover.

Like so - between the sprocket cover and the silver engine lid (I think I can see the plug, next to the injector unit. Unplug it, and check it is the 3 yellow wires under the cable sleeve):
https://www.seastarsuperbikes.co.uk/Kawasaki%20images/er6n/er6n%20eng%20lg.jpg
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[marlc0]

Right then, got a few pics, to show you what i've done.

https://goo.gl/photos/axfgedesRqZUnxL79

So, that pic shows what i'm calling A-B, and the battery volts.

A-C = 1.7, B-C = 2.0

So, i've no idea what i'm looking for, just want to make sure i'm doing it right, and if so, what does it mean?
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2010 Kawasaki ER6-f - Given to the Mrs.
2016 Triumph Tiger 800

[Islander]

You won't read battery voltage at the stator. You need to measure the output of the stator with the engine running - note that you need to change ranges to AC volts rather than DC.

[marlc0]

[Islander]

It looks like you have no output from the alternator. Did you measure the resistance of the stator windings? It might be worth checking that as a belt and braces approach but from the voltage readings it does look like a dead stator.

[marlc0]

[Islander]

Looks like it.

[marlc0]

https://goo.gl/oUe4kj

Got the stator out, and it looks a like it's burnt out. Ah well, best get looking for a new one.
____________________
2010 Kawasaki ER6-f - Given to the Mrs.
2016 Triumph Tiger 800

[RhynoCZ]

Yep, it's dead. You could find a bloke, who'd rewind it for you, but I wouldn't bother, just buy a new part. It is a generic part, no need to be looking for a ER6 specific one.

p.n. 21003-0042
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Islander]