calibrating the speedometer?

[anrkii]

sometimes my speedometer reads 000, and sometimes it works. kinda randomly. slt750 w/round mfd.

I did a search, but didnt see how to recalibrate the thing, is it easy to do?

[beerdart]

You might have crap in the line. Remove the line from the MFD and blow to clear it.

[antoniodef]

Mine did that too. Assuming it is the same as mine, under the boat in front of the intake great is a white plastic fin looking thing that reads water pressure. That goes through the hull to the tube beer was talking about. Mine came loose and would spin around under the water so it was facing the wrong way. Make sure it is tightened down in the right direction.