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Grit

New member
I have 07 f40 it has the pilot tube for the speedo. to install do I just hook up tube to speedo
or do I need to get some kind of sending unit.
Tks.
 
Grit said:
I have 07 f40 it has the pilot tube for the speedo. to install do I just hook up tube to speedo
or do I need to get some kind of sending unit.
Tks.
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If your engine has one of those tiny holes on the leading edge of the lower unit (as my 2002 F115 has), don't even waste your time or money trying o hook up a speedo. That stupid little hole and pressure tube will get clogged over and over and over again and it will drive you nuts cleaning it, picking at it, back blowing and flushing out the tube until you say to yourself "Do I really care about this". If you really want a speedo on the boat, buy a cheap one with air pressure hose that connects to a little plastic pick-up you can mount on the transom. Again, don't even waste your time with that lousy yamaha design. IF you have a GPS on your boat, do what EVERYONE does and look at the speed it is indicating to the 10th a MPH.
 
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