I have a 2001 H230 with the 5.7 Volvo and duoprop.
I started it yesterday and got the usual 2 beeps prior to turning the ignition all the way and then 2 more beeps while it was starting up. It then stumbled around for a couple of seconds on idle, before settling down and so I turned it off and started it again, with the same two beeps as the engine was firing up and the idle was better, it ran great for 2 hours, mostly on idle as I was practicing maneuvers. I ran it up to full throttle for a few minutes and ran great, never heard any more beeps. Recently taken out of storage with a full tank that's been in there since October with Marine 360 in it, but I ran it for the first time a few days ago with no issues with beeps or anything else.
I'm perplexed!
