what should earth on a bike

[smudger]

Hi

Sorry to be such a donkey and asking what might be a simple question

still got problem with bike not turning starter motor when press start button.
Starter motor definitely works when not on bike.
I have taken off every electrical connection, cleaned it with spray if its a plug or with a dremel abrasive if its a large ring type connection.
All lighting works but all I get is the solenoid click when button pressed.

I have since taken the start button out the equation when I found that the wire to it was not soldered on but that was a kipper rouge. I have left the button out and am just using a croc clip and cable to earth the solenoid. I notice that if I touch the croc straight to the motor case or any part of the engine case, there is no solenoid click thus there must be no earth route.

The wiring diag shows the battery, front flashers and start switch connected to earth.
Should the whole frame and engine be able to used as earth path?
As I have had the whole thing powder coated is there actually is no path apart from where I have removed the powder coating?

Any ideas, suggestions would be appreciated?

[J-T]

Not sure I got everything you meant due to the language barrier.

If your start button makes the solenoid click it's doing its job.  I'd put it back together.

Use a test light or voltmeter to check that you get power on the starter side of the solenoid when it clicks (when you push the start button).  If not then you have a bad solenoid.  If that's good then check that you have power at the starter.

I believe you said the starter worked when off the bike.  If you're getting power to the starter but it's not running, you must have a bad ground (earth) connection.

It is possible that this could be caused  by the powdercoating.  If this is the case you'll have to establish a good connection between the engine case and the battery ground (earth) connection.

[smudger]

its official... I'm a donkey

No earth problem, no battery problem, no wiring problem.

I jammed the starter when I put it back on, thats why it wasn't turning.

Took starter off again, freed everything up, took good care putting it back on.

Now starter turns at the touch of a button.

Will now be able to fuel & test

[J-T]

Dang I hate it when that happens!

[robhd]

Glad you got it fixed.  I know grounding ended up not being your problem, but I want to comment in case it helps someone in the future who wants an answer to the question you asked.  To test the grounding of your starter, take an ohmmeter and touch one lead to the starter and one to the engine block.  If it doesn't read zero or something REALLY close to it, you have a grounding problem.  This also works for alternators.