05 Optimax 115, Serial 1B118216
Boat starts and runs fine until I hit 4000RPM, then I get a continuous alarm. If I back off below 4000 the alarm turns off. Seems to be more of an issue in the mornings and happens less as the day progresses.
Oil is about 2/3 full in the reservoir and seems to be be using oil at the regular rate. Oil cap is tight.
Only thing I've changed since the alarm started going off is the impeller. Boat runs great at about 27 mph until I hit 4000 and have had it out for several day trips in this state. Can't get in to see a mechanic for months so any help is greatly appreciated.
Thanks in advance!