I have an Avon 560 with twin BF50's that recently had a bilge pump problem and after I got back from a week long trip the boat was like an aquaruim
I changed the batteries and some cables but the gauges seem to have problem showing the correct engine rpm, the engines however are running fine and I can tell by the sound that they are going up to 5000-5500 but the gauges are showing 2-2500 max. Please help me. (see the boat attached)