How does the choke coil work


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I am currently doing maintenance on my Yamaha 50 PS GETO and have encountered an error.
I noticed that the valve for the choke does not work. Fortunately, I now have a second one, but nothing is happening here either. Anyone know how this works? The ohm value (3.4 ohms) is OK. and the coil gets warm too, only it does not generate magnetism. It doesn't really work: stupid:, or.
Can someone help me: cool:: confused- Please Notice: This is an automatically translated article!
Thanks Thomas

It could be that the coil in the valve is defective and the value I am measuring is a resistance.
Greetings Thomas

Hello Thomas
With the Mercury I also have a magnetic coil with an iron core that closes the choke valve. Look whether (if available) is feasible. It only needs to be rusty over the winter. Usually there is a Teflon bushing in there and there is little play. Made practicable with Caramba and good food.
Greetings Walter

Hello Thomas,

If you measure a resistance (ohmic value ...) in an electrical coil with a measuring device (e.g. multimeter or similar), then it can be assumed that the coil is electrically intrinsically OK. is. Because every coil has a resistance.
If your measuring device shows infinity then the coil is interrupted and no current can flow ... so no function.

When the coil gets warm there is already a flow of current, would times
as advised by Walter, check the mechanics and possibly work
do.

Good luck: chapeau:

Hello Walter, Hello Dirk,
Thanks for the information.
But I found the mistake that no one was. : banane: I only knew a coil so that when voltage is applied it also works, but here it is so that it first gets warm and then comes out quite slowly. I called my Yamaha dealer today and he explained the whole thing to me. As this dealer is, you can only wish for a few, he is always helpful and always takes the time to explain something to you for every problem. Since I don't know whether the dealer who comes from Düsseldorf can be named here, I'll leave it for now.
Greetings Thomas

Hello Thomas
Could it be that you are an electrically heated expansion element? I only know this variant from older diesel engines (Ford Transit 2.5) where they always worked.
Greetings Walter

Hello Walter,
I'll say it will work according to this principle: chapeau:. When the engine is cold, it should also inject fuel into the middle carburetor.
Greetings Thomas

Hello Walter, Hello Dirk,
Thanks for the information.
But I found the mistake that no one was. : banane: I only knew a coil that when voltage is applied it also works, but here it is so that it first gets warm and then comes out quite slowly. I called my Yamaha dealer today and he explained the whole thing to me. As this dealer is, you can only wish for a few, he is always helpful and always takes the time to explain something to you for every problem. Since I don't know whether the dealer who comes from Düsseldorf can be named here, I'll leave it for now.
Greetings Thomas





And that was the mistake, it would have been interesting to know.

Cu Bruno

Hello Bruno,
the answer is in the text. It is not a coil where you put tension on it and something stirs, but it takes 1-2 minutes. It is the same when the voltage is gone, it takes until the valve has returned to its starting position.
Greetings Thomas

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