maxum 3500 engine fault code 75

[paul d]

I have a code 75 FUEL LVL CKT HI, on my record of alarms ,tanks are 50% full
any ideas of how to fix this

[mmwjr]

Welcome Paul

I am not familiar with this fault but other may know however it may help to know what engines you have; gas, diesel, what size.

[paul d]

Originally Posted by mmwjr

Welcome Paul

I am not familiar with this fault but other may know however it may help to know what engines you have; gas, diesel, what size.

There are twin 350 mercs
Gas it's says the fault is on the port engine. The mercruiser fault guide states contact dealer

[mmwjr]

Did a little searching and did not come up with much so far.

Smart craft code, if not equipped with full instrument (digital) some codes will exist. I am taking it this is a new fault as it's only on now engine.

From what I recall if smart craft is not set up properly for twins one computer acts funky one thus communication buss.

[paul d]

Not sure if it was an existing fault
As,i have just purchased the boat
It was in storage for a year
So it may have been an existing fault
And nobody repaired it
I just had new,alternatirs fitted on both engines and the technical didn't notice it

[mmwjr]

Do you have the smart craft digital gauge package?

If not this may not be an issue from some of what I read but not 100% sure.

Do the boat run fine and no audio alarms just stored code?

[paul d]

Hi Mike
will let you know tomorrow,i am taking it out for a trial run