I think someone has taken the plunger out as it's a solenoid valve.There is no Engine stop solenoid.
When I asked the captain to shut off the engine he went running in to the engine compartment.
He said it is how it shuts off.
By Hand.
I got a Volvo Penta, and to turn off the engine, I'm pulling a steel wire. This stops the fuel to the engine. When engine has stopped, I turn the key to the off position. This is original from the fabric in 1982 or '83.I think someone has taken the plunger out as it's a solenoid valve.
Same with my 1958 Nuffield tractor!I got a Volvo Penta, and to turn off the engine, I'm pulling a steel wire. This stops the fuel to the engine. When engine has stopped, I turn the key to the off position. This is original from the fabric in 1982 or '83.
Just the info I needed.Suspect the + is 24V power, -- is Gnd, 24W will be the Tacho signal & will probably be a terminal on the altenator picking the AC power from a winding before the Diodes.
I was just thinking of that u know.Heres amended circuit, add 2 diodes to buzzer & atach to temp switch & oil switch. The buzzer will sound at switch on & go off when oil pressure up after eng running. Will then only sound if over temp or oil pressure too low. You are absolutely sure there is no tacho sender on the front of the engine. The later version Yanmar 4CHE3 has a 2 wire sender which senses the ring gear teeth on the flywheel. But i dont see one on your motor.
by Duane Benson
by Aaron Carman
by Aaron Carman
by Jake Hertz