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Hey everyone,
I have a DF350 that i installed in June on a 23' seacraft. I followed the break in procedure per the manual and did the first maintenance at 20 hours with no issues. the boat was getting 59 mph at 6300 RPMs WOT with a half tank of fuel and minimal gear. Im at 85 hours now and the last 30-40 hours have been offshore fishing with a pretty heavy load but I noticed reduced fuel efficiency at cruise the last couple of trips. I ran the boat with a light load on the lake and can now only get 6000 RPM's WOT and cruise is about 200-300 RPM's higher. All variables with the boat were the same as before and i also ran new 93 octane fuel from an aux tank to rule out fuel. I do not recall hitting anything with the props and both look brand new. I will check for fishing line on the prop shaft but I'm not sure this would cause 300 RPM difference. I will be taking it in for service at 100 hours soon but wanted to see if anyone had any ideas before its due.
I have a DF350 that i installed in June on a 23' seacraft. I followed the break in procedure per the manual and did the first maintenance at 20 hours with no issues. the boat was getting 59 mph at 6300 RPMs WOT with a half tank of fuel and minimal gear. Im at 85 hours now and the last 30-40 hours have been offshore fishing with a pretty heavy load but I noticed reduced fuel efficiency at cruise the last couple of trips. I ran the boat with a light load on the lake and can now only get 6000 RPM's WOT and cruise is about 200-300 RPM's higher. All variables with the boat were the same as before and i also ran new 93 octane fuel from an aux tank to rule out fuel. I do not recall hitting anything with the props and both look brand new. I will check for fishing line on the prop shaft but I'm not sure this would cause 300 RPM difference. I will be taking it in for service at 100 hours soon but wanted to see if anyone had any ideas before its due.
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