Hi Everyone,
2000 Yahama SX 250hp OX66, 3 blade prop 15-1/4"X15"-M.
Boat: 1989 Mako 231 with A&J bracket.
Motor runs fine for a while (15-25mins) at all speeds and RPMs, soon as it gets warmer and hits the 4000rpm or over, shuts down, like if I turn the key off!!
Motor cranks right away if I...