Topics

start stop engine


Sebti Lamya
 

I am unable to stop the engine with the switch button in the cockpit
I have to use the manual stop button (red one ) inside the engine.
Despite having changed the relay (solenoid ??) and the switch button on the helm, no technician have been able to find the solution. It seems that the small relay that control the big relay that connects the minus is taking two contradictory messages : to start and to stop.

Do you have any idea or recommendation.

Thanks in advance.


Germain Jean-Pierre
 

Hello Lamya,

Welcome to this forum; you should receive a reply soon.... but how can anyone give you good advice with the information you shared? No boat model, engine... 

This site is private and new members are vested by Moderators before inclusion.  Members normally add name, type of Amel (Eros, Mango etc) and hull number.  Most people will include their location.

Welcome!

Jean-Pierre Germain, SY Eleuthera, SM 007, Fiji


On 22 Aug 2019, at 20:32, Sebti Lamya <noreddine.sebti@...> wrote:

I am unable to stop the engine with the switch button in the cockpit
I have to use the manual stop button (red one ) inside the engine.
Despite having changed the relay (solenoid ??) and the switch button on the helm, no technician have been able to find the solution. It seems that the small relay that control the big relay that connects the minus is taking two contradictory messages : to start and to stop.

Do you have any idea or recommendation.

Thanks in advance.


Sebti Lamya
 

Hi to All,

My boat is a SM , hull number 370 from 2002. the engine is a Yanmar 4JH3-HTE. I am actually in Greece, Kalamata Marina.

Regards.

Noreddine Sebti
Name of boat : Alma Libre


Sebti Lamya
 

Hi to All,

These are the pictures of the two relays that seem causing the problem.

Noreddine and Lamya Sebti

SV Alma Libre, SM 370, Greece, Kalamata


Gerhard Mueller
 

Goto to the Yanmar manual: https://www.yanmarmarine.com/theme/yanmarportal/uploadedFiles/Marine/productDownloads/Leisure-Previous-Models/Operation-Manuals/4JH3-T-series-OP-Manual-ENG.pdf
At page 52 and the following pages you will find the wiring diagrams. I do not see a relay there.
If you want I can visit you and check your engine. I am at berth A14 Kalamata.

Regards Gerhard
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece


Elja Röllinghoff Balu SM 222
 

Hallo Gerhard
Maby you can help ouer frend he is in Kalamata Marina peer B Nr 9 ore so the SM 2000
Best Elja
SM Balu
222 peer B 11

Von meinem iPhone gesendet


 

Find the red lever on the port side of the engine. Manually turn it until engine stops. 

Best,

CW Bill Rouse
Yacht School - Supporting Amel Owners
www.YachtSchool.us
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

On Thu, Aug 22, 2019, 6:11 AM Elja Röllinghoff Balu SM 222 <Bijorka@...> wrote:
Hallo Gerhard
Maby you can help ouer frend he is in Kalamata Marina peer B Nr 9 ore so the SM 2000
Best Elja
SM Balu
222 peer B 11

Von meinem iPhone gesendet




Gerhard Mueller
 

Elja
I have printed out and given him the wire diagrams of his Yanmar engine.
I guess he has switched off the starter switch and so the stop switch has no current anymore.
At last that shows the diagrams.
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece


 

image.png

Best,

CW Bill Rouse
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970



On Thu, Aug 22, 2019 at 9:38 AM Gerhard Mueller via Groups.Io <carcode=me.com@groups.io> wrote:
Elja
I have printed out and given him the wire diagrams of his Yanmar engine.
I guess he has switched off the starter switch and so the stop switch has no current anymore.
At last that shows the diagrams.
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece


Gerhard Mueller
 

Bill
Perhaps you misunderstand. He is already stopping the engine by hand with the level at the injection pump.
But he wants to stop the engine with the stop button at the engine panel using the stop solenoid as normal.
Regarding the wire diagrams it might be he has first switched off the start switch and after that the stop button has no current anymore.
So first stop the engine with the stop button and after that switch off the start switch (using the key).
Perhaps you will want to take this correct procedure into your Amel documentations.
Thank you.
--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece


eric freedman
 

There are two diodes in the circuit before the solenoid with the black rubber top.

They are connected to one of the small wires on the solenoid.

These diodes prevent the engine from starting and stopping at the same time.

If there is a short in the diode the engine will try to start and stop at the same time.

The diodes are made by Motorola and are not immediately visible as they are covered by black heat shrink tubing.

They are a few inches from the big solenoid.

One of the wires goes to the starter switch and the other goes to the stop solenoid in the injector pump.

The first thing I would do is to check the diodes.

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Sebti Lamya
Sent: Thursday, August 22, 2019 4:33 AM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] start stop engine

 

I am unable to stop the engine with the switch button in the cockpit
I have to use the manual stop button (red one ) inside the engine.
Despite having changed the relay (solenoid ??) and the switch button on the helm, no technician have been able to find the solution. It seems that the small relay that control the big relay that connects the minus is taking two contradictory messages : to start and to stop.

Do you have any idea or recommendation.

Thanks in advance.


karkauai
 

You beat me to it, Eric.  That was the first thing that came to mind, too, unless the engine is new to him and he doesn’t know to push the stop button before turning off the key as Gerhart suggested.

Kent Robertson
S/V Kristy
SM 243

On Aug 22, 2019, at 2:59 PM, eric freedman <kimberlite@...> wrote:

There are two diodes in the circuit before the solenoid with the black rubber top.

They are connected to one of the small wires on the solenoid.

These diodes prevent the engine from starting and stopping at the same time.

If there is a short in the diode the engine will try to start and stop at the same time.

The diodes are made by Motorola and are not immediately visible as they are covered by black heat shrink tubing.

They are a few inches from the big solenoid.

One of the wires goes to the starter switch and the other goes to the stop solenoid in the injector pump.

The first thing I would do is to check the diodes.

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Sebti Lamya
Sent: Thursday, August 22, 2019 4:33 AM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] start stop engine

 

I am unable to stop the engine with the switch button in the cockpit
I have to use the manual stop button (red one ) inside the engine.
Despite having changed the relay (solenoid ??) and the switch button on the helm, no technician have been able to find the solution. It seems that the small relay that control the big relay that connects the minus is taking two contradictory messages : to start and to stop.

Do you have any idea or recommendation.

Thanks in advance.


 

Gerhard, thanks for that. There was a lot more information I sent him off-group.

Eric, Thank you very much for the diode reminder...I sent him your detailed posting  along with your photos that you previously posted on this problem.

Best,

CW Bill Rouse
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970



On Thu, Aug 22, 2019 at 2:56 PM karkauai via Groups.Io <karkauai=yahoo.com@groups.io> wrote:
You beat me to it, Eric.  That was the first thing that came to mind, too, unless the engine is new to him and he doesn’t know to push the stop button before turning off the key as Gerhart suggested.

Kent Robertson
S/V Kristy
SM 243

On Aug 22, 2019, at 2:59 PM, eric freedman <kimberlite@...> wrote:

There are two diodes in the circuit before the solenoid with the black rubber top.

They are connected to one of the small wires on the solenoid.

These diodes prevent the engine from starting and stopping at the same time.

If there is a short in the diode the engine will try to start and stop at the same time.

The diodes are made by Motorola and are not immediately visible as they are covered by black heat shrink tubing.

They are a few inches from the big solenoid.

One of the wires goes to the starter switch and the other goes to the stop solenoid in the injector pump.

The first thing I would do is to check the diodes.

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Sebti Lamya
Sent: Thursday, August 22, 2019 4:33 AM
To: main@AmelYachtOwners.groups.io
Subject: [AmelYachtOwners] start stop engine

 

I am unable to stop the engine with the switch button in the cockpit
I have to use the manual stop button (red one ) inside the engine.
Despite having changed the relay (solenoid ??) and the switch button on the helm, no technician have been able to find the solution. It seems that the small relay that control the big relay that connects the minus is taking two contradictory messages : to start and to stop.

Do you have any idea or recommendation.

Thanks in advance.


karkauai
 

To make it clearer, Amel uses a “floating”, or “isolated” ground system that disconnects battery negative from the bonding (zincs) system. It makes a connection to the engine block only when the starter, stop solenoid, or glow plugs are energized.  A solenoid in the line between battery negative and the engine block is energized to complete the circuit.  There are three diodes in the circuit that prevent a feedback loop which would energize the stop and start solenoids at the same time.  If the stop diode failed, the button wouldn’t work.  If the start diode shorted, you would hear the starter motor when you pushed the stop button.
If the stop diode shorted the engine wouldn’t start because the stop solenoid would be energized when you keyed the engine to start.

Craig, Bill, Danny, etc, if I don’t have this quite right, please correct me, .
Kent
SM243
Kristy


eric freedman
 

Hi Kent,

My engine has 2 diodes.

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of karkauai via Groups.Io
Sent: Thursday, August 22, 2019 4:24 PM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] start stop engine

 

To make it clearer, Amel uses a “floating”, or “isolated” ground system that disconnects battery negative from the bonding (zincs) system. It makes a connection to the engine block only when the starter, stop solenoid, or glow plugs are energized.  A solenoid in the line between battery negative and the engine block is energized to complete the circuit.  There are three diodes in the circuit that prevent a feedback loop which would energize the stop and start solenoids at the same time.  If the stop diode failed, the button wouldn’t work.  If the start diode shorted, you would hear the starter motor when you pushed the stop button.
If the stop diode shorted the engine wouldn’t start because the stop solenoid would be energized when you keyed the engine to start.

Craig, Bill, Danny, etc, if I don’t have this quite right, please correct me, .
Kent
SM243
Kristy


Gerhard Mueller
 

Altogether there are 15 diodes.


--
Gerhard Mueller
Amel Sharki #60
Currently Kalamata, Greece


rossirossix4
 

Anybody have the diode part number and a US source for the diodes?  Seems like they are a popular enough problem with the Yanmar to merit carrying a spare.
Bob and Suzanne, KAIMI is on the hard in Varadero, Aruba we are in Crested Butte, CO 

Varadero has a 7' + low tide channel to the marina.  Use a hydraulic trailer lift for about $350USD with diver.  One of the best lifts we've ever had with our SM or our SN.   https://photos.app.goo.gl/2c1ZrAKD2gXcY7iQ6