New boater/new owner, 70hp '88 Merc, what's this line?

Buzz Killington

Petty Officer 2nd Class
Joined
Apr 27, 2010
Messages
128
28hftx3.jpg


New to me boat has the above-mentioned motor, and this line hanging off the front of the lower.

What is it? I would expect a water pressure line to be up on the powerhead.

Mille gracias,

Dave
 

sutor623

Rear Admiral
Joined
May 23, 2011
Messages
4,087
Re: New boater/new owner, 70hp '88 Merc, what's this line?

I think its just a breather line. My buds '86 115hp has the same deal, but its a different style hose.
 

Yesterday

Petty Officer 1st Class
Joined
Feb 21, 2012
Messages
354
Re: New boater/new owner, 70hp '88 Merc, what's this line?

Is that a home brewed add-on I wonder??
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,758
Re: New boater/new owner, 70hp '88 Merc, what's this line?

Or the pitot for the speedometer.
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: New boater/new owner, 70hp '88 Merc, what's this line?

You should look down on the leading edge of the nose of the LU and see if you can spot a small hole. If it is there, that line is a speedometer tube which you would attach to another running forward to the gauge.

Gerry
 

Dick Bacon

Seaman Apprentice
Joined
Dec 18, 2010
Messages
46
Re: New boater/new owner, 70hp '88 Merc, what's this line?

I have the same motor. It is the line that feeds the speedometer.
 
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