Engine Trouble

[spareparts]

biggest thing you need to watch on the Yamaha oil system is teh hoses from the pump to the intake, make sure those hoses are in good condition and the connections are good. Clean the oil tank while you have it out, get all the old crud out of it. As far as the float switches go, I haven't seen to many problems with them other than crud sticking the float. The tank on the engine has a float switch also, good thing is if the switches go bad, they default to low oil condiditons, reducing rpm till its fixed. BTW, the oil level indicators on the digital guage is miss leading. When its in the green area, you are full of oil, when you hit the yellow or mid way indicator, you need to add oil, that indicator tells you when the resevoir in the boat is low(it also turns the transfer pump off till oil level is restored), not half out of oil. When the indicator gets to the low side(or red) the tank on the engine is too low(last chance) and the rpm limit should kick in. You can use the manual transfer switch to transfer oil from the boat resevoir to the engine resevoir to get you going again, but its not going to last long. If you run it low enough to kick in the rpm limit, you will have to cycle the key, and or manually transfer enough oil to the engine resevoir for the transfer pump to kick back in.