SteveDH
Member
Hi All,
Is anyone able to give me a few ideas on an electrical problem I have with the 2004 Yamaha 15HP outboard on my RIB?
All was good when we stored the RIB in the autumn, but on trying to start her today (electric start), she appears dead. The battery is charged (to 12.8V), but as soon as I turn the ignition to stage 1, the battery voltage drops to 4V as if something is dragging the power down.
An accessory supply from the ignition comes into the steering console which powers a GPS speedo and some LED nav lights, but I've disconnected this supply to rule out a problem with these accessories, and the problem still exists.
The positive and negative cables run from the battery straight into the outboard, and the 12.8V is good there. As soon as switch the ignition key to stage 1, the voltage drags down to 4V and everything appears dead … no clicking or any signs of life, nor any cranking if I move the ignition key to the cranking position.
If I switch the ignition back off, the battery voltage lifts back to 12.8V.
Any suggestions as to what to check first?
Thanks in advance
Steve
Is anyone able to give me a few ideas on an electrical problem I have with the 2004 Yamaha 15HP outboard on my RIB?
All was good when we stored the RIB in the autumn, but on trying to start her today (electric start), she appears dead. The battery is charged (to 12.8V), but as soon as I turn the ignition to stage 1, the battery voltage drops to 4V as if something is dragging the power down.
An accessory supply from the ignition comes into the steering console which powers a GPS speedo and some LED nav lights, but I've disconnected this supply to rule out a problem with these accessories, and the problem still exists.
The positive and negative cables run from the battery straight into the outboard, and the 12.8V is good there. As soon as switch the ignition key to stage 1, the voltage drags down to 4V and everything appears dead … no clicking or any signs of life, nor any cranking if I move the ignition key to the cranking position.
If I switch the ignition back off, the battery voltage lifts back to 12.8V.
Any suggestions as to what to check first?
Thanks in advance
Steve