Amps of Stop Solenoid

[Emmark]

I have an intermittent problem of my beta 20 cutting out when warm. (Been motoring for a hour plus) I have replaced the stop solenoid but also want to replace the cable, does anyone know what amp the cable and connectors should be please?

Also there is a 40amp fuse on the engine somewhere can anyone give me an idea where to look for this please?

Thanks, Mark

 

[VicS]

I have an intermittent problem of my beta 20 cutting out when warm. (Been motoring for a hour plus) I have replaced the stop solenoid but also want to replace the cable, does anyone know what amp the cable and connectors should be please?

Also there is a 40amp fuse on the engine somewhere can anyone give me an idea where to look for this please?

Thanks, Mark

According to the wiring diagram in the "Installation Guide and Operators Manual" it is 2.5mm² , but why have you replaced the stop solenoid and why do you want to replace the cable.
.

 

[Emmark]

To eliminate a possibility of why the engine occasionally cuts out when warm.
I thought a worn stop solenoid or a poor connection might trigger the stop solenoid to stop the engine.

I’’ve not found any blockage in the fuel pipes, changed both filters, drained the tank, cleaned it and put fresh diesel in.

My other thoughts are failing injector, fuel lift pump or a blocked fuel return pipe?

 

[LittleSister]

I have an intermittent problem of my beta 20 cutting out when warm. (Been motoring for a hour plus) I have replaced the stop solenoid but also want to replace the cable . . .

To eliminate a possibility of why the engine occasionally cuts out when warm.
I thought a worn stop solenoid or a poor connection might trigger the stop solenoid to stop the engine.

It seems very unlikely to me that a stop solenoid, and even more unlikely the wiring to it, would cause a problem of the engine cutting out intermittently.

Failure of either of those would typically cause a problem (intermittent or otherwise) in stopping the engine (and a need to revert to the Beta's manual fuel cut-off lever).

You could check whether the fuel cut-off valve itself is somehow involved in your engine cutting out by when it does so operating that manual fuel cut-off lever and seeing off that makes a difference. Even if that valve were faulty, which seems unlikely, I imagine it would usually either fail closed so the engine wouldn't start in the first place, or fail to fully close so that it didn't stop the engine, not be open then close of its own volition.

Does your engine re-start OK after it has cut out, or do you have to wait for it to get cold?

 

[VicS]

To eliminate a possibility of why the engine occasionally cuts out when warm.
I thought a worn stop solenoid or a poor connection might trigger the stop solenoid to stop the engine.

I’’ve not found any blockage in the fuel pipes, changed both filters, drained the tank, cleaned it and put fresh diesel in.

My other thoughts are failing injector, fuel lift pump or a blocked fuel return pipe?

As Little Sister explains a faulty stop solenoid or poor connection in the wiring might cause difficulty stopping the engine not cause the engine to stop randomly. It is energised to stop the engine.
Perhaps look at the possibility that air is being drawn into the fuel system. ??

The fuse you asked about is located in the wiring close to the starter motor. There are two pictures in the manual that illustrate the location

 

[Mistroma]

I agree with the other posts. It would be an incredibly poor design choice for a boat engine to make the engine stop fail in a way that immediately stops a running engine. The solenoid will only close to stop fuel flow when the circuit is closed. It would normally fail open but it is possible that some weird fault applies power to stop fuel flow. However, the underlying basic design will make that the last thing likely to have happened. You'd really almost need something like a loose 12V wire waving around next to the solenoid or the switch.

 

[Alex_Blackwood]

As said above. The stop solenoid on a Beta definitely has to be energised to stop the engine.

 

[billskip]

Does your engine re-start OK after it has cut out, or do you have to wait for it to get cold?

This?

 

[Stemar]

My first though would be a fuel issue, maybe crud in the tank that occasionally blocks the fuel pickup, or a blocked vent.