simple question

petersto

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is it pull stop and then turn off ignition or the other way round i have always pulled stop and then turned off the ignition thereby checking the alarms.
 

Talulah

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At night if you turn off the ignition and then pull stop the alarm won't wake the neighbours!
If you have a solenoid fuel cut off instead of a cable then some engines are difficult to stop if you have turned off the ignition first.
 

Nick_Pam

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My Jeanneau (Yanmar 4JH-4E) won't stop if the ignition is turned off at the key.
The stop solenoid runs off the ignition circuit I assume
Kill the engine and then kill the ignition is also what it says in the Yanmar manual.

Regards
Nick
 

sarabande

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Depends on the intelligence in the alternator control, but some alternators will continue to produce current when the ignition switch is off. This may frazzle some sensitive electronics, so kill engine fuel supply first, then switch off when rotation has ceased.

What happens to your ignition light when you switch off before stopping the engine ? Does it come on, change brightness, or what ?

In some more modern engines, switching off dumps the alternator AND the engine together. Mostly seen in diesel engines for cars.
 

Oldhand

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Diesel engines without a key which both stops the engine and turns off the "ignition" must have stopped before you turn the key off. Turning the key off removes the field current from the alternator, which if sudden, can cause a back EMF spike that can fry the alternator rectifier diodes. Also an alternator can still produce some output with the field current removed due to residual magnetism, which, 'cause you have turned the key off, you don't expect.
 
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