My sons new 2017 tracker 175 w 50hp merc 4s has started beeping at WOT. RPMs are within normal range to below max. Trying to avoid a dealer trip. Says it beeped 6 times, would quit if throttled down, throttle up and it would start beeping again. Oil between the marks on the dipstick. I'm going to guess there's 20 to 30 hours on the motor with proper break in. SER 1c494400