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Excavator circuit diagram

I have a Kobelco mini excavator. The only numbers I can find on it to give any idea of the model is a tag with PC 0825 on it. I dont think this is the model. I am told it is a 3 tonne model which was imported direct from Japan without instructions. It has a Yanmar 3 cylinder diesel engine. No cab, zero swing.
I am desperate to get a electrical circuit diagram as there is a problem with the starting system which causes it to shut the stop solenoid valve immediately the motor starts.

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  • Wayne Dyer Jul 15, 2013

    HI GEOFF, Wondered if you got any replies back then . I have one does same thing. regards Wayne


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Hi, firstly check that you are getting power to the solenoid when it tries to run as these solenoids have 2 power supplies.
One is for bringing the solenoid in the other is for holding it in place.
Sometimes when these solenoids fail the pull in connection still works but then they fail to hold.
Sounds like your problem.
We repair these types of machines in our garage so if this dont work let me know as I may be able to get a diagram.
The engine ciruits are all the same for all these *** engines.

Posted on Nov 28, 2008

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The model number kobelco sk025

Posted on May 10, 2009

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