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Common problem I believe. Intermittent start on button push on Yanmar 3GM.

I've traced wiring and I already see a solenoid fitted. I by-passed the start button with a temporary switch and got starting first time every time, therefore likely the push button has corroded contacts.

To replace it is  around $110, but it is only an intermittent switch. Jaycar sell them for about 22 bucks.

I can't find the characteristics of the switch though, so does anyone know how much current goes through such a switch?

cheers

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1 hour ago, alibaba said:

Common problem I believe. Intermittent start on button push on Yanmar 3GM.

I've traced wiring and I already see a solenoid fitted. I by-passed the start button with a temporary switch and got starting first time every time, therefore likely the push button has corroded contacts.

To replace it is  around $110, but it is only an intermittent switch. Jaycar sell them for about 22 bucks.

I can't find the characteristics of the switch though, so does anyone know how much current goes through such a switch?

cheers

Solenoid energizing coils don't take an enormous amount, I suggest looking at the model of solenoid and working backwards from there.

These are rated at 50A there's no way it be that.  I have one of these mounted in the engine bay to start a 29hp Volvo if the magic black box ever fails.

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On 24/03/2021 at 2:17 PM, alibaba said:

Common problem I believe. Intermittent start on button push on Yanmar 3GM.

I've traced wiring and I already see a solenoid fitted. I by-passed the start button with a temporary switch and got starting first time every time, therefore likely the push button has corroded contacts.

To replace it is  around $110, but it is only an intermittent switch. Jaycar sell them for about 22 bucks.

I can't find the characteristics of the switch though, so does anyone know how much current goes through such a switch?

cheers

it will only be in the order of 5-10 amps

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yup - mh is onto it.  Remote solenoids that are essentially just a big relay run at about 10A tops, probably half that or less, but depends on the solenoid in use.  The current is for a very short time and at a low voltage so its actually not too critical what the switch is within reason

A solenoid fitted to the starter is a different fish - it may pull 30 to 50A initially, dropping to about 5 - 10A once the pinion is engaged.

 

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On 26/03/2021 at 1:29 PM, alibaba said:

Thanks folks- Repco had the deal, intermittent switch rated at 50a at 12v.

Hopefully problem solved.

What are the details, part number. Thanks

 

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The one I used in the end is part number 60099BL, it's a Narva brand, Repco have several different ones, and you should be able to find one which fits your cutout on the panel.

cheers

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