What is this hose for 97 evinrude 150

[Odawg753]

Shown in YouTube video https://youtu.be/D2vuAwKbbhU

 

[jimmbo]

Where does it come from? The engine cowl? Take cover off engine, gently tug on hose and see if you can trace it back

 

[crazy charlie]

I have same motor and don't remember seeing a hose there

 

[Bosunsmate]

Looks like some aftermarket dreamer added it, no need for a tube down to there, trace it back as Jim says. Good Bloodhound gang Karaoke by the way, dont see many duets

 

[daselbee]

It is a hose that runs from the speedometer pickup that is located on the front of the lower unit. Should be a plastic 90* fitting. The hose is routed like your video shows, and from that open end, from there it goes to the helm and to a speedo gauge.

 

[Odawg753]

After looking more there seems to be 2 the other was facing down in the cowling. It traced back to the rail on intake manifold behind carbs. Parallel to the fuel rail

 

[daselbee]

If that is the case, it is not the speedo tube. Sure looked like it.

 

[Odawg753]

No Title

 

[Odawg753]

Got it! Balance tube hose!

 

[Odawg753]

I still don't know where they connect, I was told one side goes to air box and the other goes to crank case. The only spot on air box has a hose going to the crank case which I thought was so the excess gas would leak out when trimmed up. Maybe previous owner added that hose n just didn't bother with balance lines? Anymore input would be great, I have the manual in the mail.

 

[CatTwentyTwo]

The starboard hose goes to the lower main bearing vent on the crank case. I didn't pull my airbox off to see exactly where it is but it's down between the 2 lower carbs if I remember right.
The port hose goes to the airbox, if you look at the backside of the box on the lower left you will find a hose nipple that the hose connects to.

 

[Odawg753]

The starboard hose goes to the lower main bearing vent on the crank case. I didn't pull my airbox off to see exactly where it is but it's down between the 2 lower carbs if I remember right.
The port hose goes to the airbox, if you look at the backside of the box on the lower left you will find a hose nipple that the hose connects to.

Hey thanks, old owner must have been confused too n just put hose from air box to crankcase