wont start

[<JWALKER>]

I have a 2001 200hp saltwater series. I started it up this am. It idled for 10min then quit. Would not restart. Turned over slow like a weak battery. I replaced one the other tested fine. I changed plugs and battery switch. All the wiring seems to be in check. It will fire up then conk out right away. Then will turn over and not start. If it sits you can fire it again. Any body have suggestions or does it need to go to the shop.

[<boats.net>]

If it is a fuel injected model it requires a higher amp battery with 100-120 amp hour, 512 cold cranking and 182 minutes reserve. If it is a fuel injected it will not run if voltage drops below 10 volts