yamaha pro v 150

[buzzyb]

Yamaha part # 6E5-45378-00-00 what is this used for and where does the hose hook to.
this is on the lower unit of a 95 Yamaha pro v 150.

thanks

[boscoe99]

It is a hose nipple.

It is used to convey water pressure from the pitot tube (converted to air pressure along the way) on the lower unit to a speedometer in the boat, if the boat has one.

A short length of hose in the lower unit is connected to the nipple at one end and to a hose barb at the other end. The hose barb is then connected to another hose that runs to the engine pan. Then yet another hose connects to that hose and runs from the motor to the speedometer.

Look at items 17, 18 and 19 in the illustration linked to below

1997 L200TXRV Yamaha Outboard LOWER CASING DRIVE 1 150 175 200 Diagram and Parts

[buzzyb]

ok
thank you very much.
buzzyb