On Jun 13, 11:43 am, Wayne.B wrote:
On Wed, 13 Jun 2007 11:29:16 -0400, Michael Noe

wrote:
I just purchased an '01 Maxum 3500. When I start the port engine with
the generator running, it stalls the generator. Does anyone have any
idea what would cause this? Both engine batteries are new, the third
seems OK.

Is the generator battery in parallel with the port engine, or do they
share the same battery? If so, the most likely explanation is that
the port side starter motor is pulling down the voltage too low for
the electronic controls on the generator.

I'd start by cleaning and tightening all of the battery cable
connections, both ends. If possible isolate the port side engine
battery from the generator battery.

How many volts do the controls run on, just curious? In cars, most of
the electronic controls and sensors run on 5 volts just in case you
have a draw down problem as you describe above. As to the origional
poster I agree with Wayne. Assuming you are confident the system
worked correctly as it is at one point I would pick up a roll of emery
cloth and some spider washers (locking spring washers) and start
cleaning connections from square one.