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Old 22-08-2012, 16:37   #16
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Re: 4-108 Fuel Shutoff

The Perkins 4-108 engine I worked on had a push button to shut down the engine. It only required electrical power to shut down the engine and only for as long as you held in the button. I know this as a fact because the ground wire to the solenoid broke and we had to manually activate the solenoid to shut the engine down.

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Old 24-08-2012, 08:28   #17
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Re: 4-108 Fuel Shutoff

You can wire it either way. Solenoid should not be energized when engine is not running. I bought a 4 position tractor switch and installed it on my engine, westerbeke 40.

here are key switch positions and state of the solenoid and fuel shutoff valve

position______12V solenoid______fuel valve

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Old 24-08-2012, 12:57   #18
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Re: 4-108 Fuel Shutoff

What I found in aiding the job of bleeding is an inline automotive fuel pump. Works great. Even before normal run up, I turn it on while holding the heater button for 1 minute. Fires right up.

"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"
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