electrical problem need help ?

[stanley111]

starboard engine shuts down when reducing throttle at around 1800-1600 rpms , then all gauges and key switch won't work . back a dock later in day engine fires up and all gauges okay ,go out for test run same thing ? any suggestions would be great , got to be electrical i think ?
cummins 250 s 4bta 500 hours just replaced batteries .plenty off fuel .

[stanley111]

electrical problem

the problem was the 10 amp breaker on the engine went bad and the stop soleniod was loose . hope this will help some one in the future .

[TwinFin]

Question?

What are the locations of the 10 A breaker and stop solenoid you refer to?

[Tswann]

They are specific to the motor. On the 4B the breaker is between the last valve cover and under the air sep (red button style breaker with a '10' on it mounted in a metal bracket).

The stop solenoid is up on the fuel pump. If the bracket was a little loose the plunger wasn't drawing back in fully . . .

Twin Fin I do not know what or where the Volvo 300 equivalent items are located.