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.