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 geopro |
Key won't shut off the engine. |
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Posts: 27 06/06/09 22:33:11 |
Seems the key turned to the off position will not shut off the engine. I have to pull the lever located on the starboard side of the for lack of a better term,
swim ladder exit space ..... sorry (just rear of the helm, starboard and low.)
Any ideas for a quick fix? Regards George s/v Outrageous 507/3 cabin |
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symandalay |
#1 | |||
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Posts: 201 06/07/09 03:00:23 |
That is how it is supposed to work. If you shut off the key and leave the engine running, you will fry your alternator. Always pull the lever first, then turn
off the key.
Some boats are designed so that the key will stop the engine but that requires an inline fuel shutoff solenoid valve which you do not have. |
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WittDe54 |
#2 | |||
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Posts: 5 06/07/09 03:00:45 |
George I do not know if we have the same config but if you have a stop engine button on the pedestal it will only work if the key is turned on.
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nickwigen |
You can turn off the key without frying the alternator. | #3 | ||
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Posts: 271 06/07/09 07:27:54 |
Unless you have an electric solenoid on the fuel cut-off you have to pull the lever as Colin describes. I know some newer boats might have the solenoid but
all I've seen don't. Turning of the key cuts the power to the regulator (and everthing else engine related) but won't hurt the alternator. We
have 2 alterntors, the original to charge the cranking battery and a 100 amp for the house bank. We routinely shut the key off right after the engine starts
(and oil pressure is confirmed) until the the engine is warm if the batteries are way down so we don't put the low-speed load on a cold engine. Once up to
temperature we increase the RPMs and activate the alternators. This was according to the advice of the "smart" regulator manufacturer. Alternator
damage comes when you disconnect the main output when it is running by turning the main battery switch to OFF. That usually kills the diodes.
Nick Wigen
Ursa Minor #178 FK, 3-Cabin Portland, Oregon |
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melelana |
#4 | |||
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Posts: 387 06/08/09 06:27:50 |
George,
Only later model boats have the stop solenoid where a stop button shuts off the fuel. Diesels can's be stopped by turning off the "ignition" as the ignition comes from intorducing atomized into a cylinder filled with compressed hot air. Without that stop solenoid, the rest of us have to use the fuel shutoff handle.
Larry
Melelana Catalina 42 #175 1990 3cbn, wk Solomons, MD |
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pdrimmer |
#5 | |||
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Posts: 198 06/08/09 12:57:44 |
I replaced the broken cable shut off with a solenoid stop switch. The parts are available from Yanmar (Mack Boring)
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SteveInMD |
#6 | |||
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Posts: 57 06/09/09 05:56:15 |
I agree that you can turn off the key without frying the alternator. You will likely "fry" the alternator if you turn the battery switch to off with
the engine running.
I believe (I could be wrong here) that on a stock setup turning the key off does not shut down the alternator. The key will turn off the excite wire going to the alternator, but that is only needed to get the alternator going. Once it is going it uses some of the current that it's producing to keep creating electricity. Can anyone clarify?
Steve Eller, Hull #446, 3 cabin, Annapolis, MD
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george lyons |
#7 | |||
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Posts: 18 06/09/09 07:35:07 |
I have hull # 963 and the stop button on engine control will not work if the key is in the off position , but will work if the key is in the on position after
being in off position ( by accident ) while engine is running . Even though the key was accidently moved to the off position for some time while engiine was
running , I have not detected any alternator issue .
Lion Heart
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