Topic: 1938 Evinrude Sportfour fuel line connection – Antique Outboard Motor Club,Inc

This topic has 8 replies, 2 voices, and was last updated 2 years, 2 months ago by Buccaneer.

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August 29, 2022 at 3:42 pm #265214
Buccaneer
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Just started on a this new project yesterday.
I had to pull the big fuel line connector bolt out
of the carb to get the front cover off, so I really didn’t
see how it looked, assuming it was on there correctly.
I don’t remember hearing anything “hit the floor”, and
if so, I haven’t found it, but it seems impossible to
hook the fuel line back up to the carb the way it is.

The big bolt has a long taper, which one would think
would mate up with the taper in the fuel line fitting, but
to do so, the fuel line would be directed down, away from
the bottom of the fuel tank. Either way it’s oriented,
it doesn’t make sense, fit, nor anyway in my wildest dreams would
it be “leak proof”.
Anyone have photos of one on how is suppose to look, and know
if I’m missing some parts?
Thanks.

Prepare to be boarded!
August 29, 2022 at 5:36 pm #265221
The Boat House
Participant
Goes together this way. Leaking is normally only a problem
when parts are switch. Usually leaks at the bolt head. Over
tightening to stop the leak breaks the bolt. Not a problem
for you. A new bolt will usually stop the leak. This is commonly
refereed to as the banjo fitting.
Tubs.
August 29, 2022 at 5:54 pm #265223
Buccaneer
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US Member
Tubs, I wonder if I have some mis-matched parts.
From what I can tell, my bolt and the fuel line look
the same, but I do not have the taper in the bottom
of my carb, but rather a stepped brass fitting,
which the non-tapered side of the fuel line does not even
fit over, and the tapered side of the fuel line won’t “seat”
on it either. Hmmmmmm.
Thanks.

Prepare to be boarded!
August 29, 2022 at 7:04 pm #265234
The Boat House
Participant
Your OK. If it’s not seating on the brass fitting
look for a burr on one piece or the other.
Tubs.
August 29, 2022 at 7:05 pm #265235
The Boat House
Participant
.
- This reply was modified 2 years, 2 months ago by The Boat House.
August 29, 2022 at 9:02 pm #265243
Buccaneer
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US Member
Tubs, I will triple check tomorrow, but I think that if I put the fuel line on as in your photo below,
with the tapered side “down” (to mate with the bolt taper), then the fuel line will arch down
at the other end, and not hook up to the petcock.
Hopefully I’m just missing something, and the dawn of a new day will shed some clarity
on the situation! Thanks.

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August 29, 2022 at 10:57 pm #265263
The Boat House
Participant
If that is the case maybe the last person who owned it
was unfamiliar with how it should be assembled as well.
Tubs.
August 31, 2022 at 10:08 am #265311
The Boat House
Participant
Looking at your assembled carburetor here
and in projects your bolt looks to have been
made as a replacement. Normally they are
made of brass. If you have a leak it may be
your bolt is to hard and you’ll need to make
a brass replacement.
Tubs.
- This reply was modified 2 years, 2 months ago by The Boat House.
August 31, 2022 at 4:54 pm #265348
Buccaneer
Participant
US Member
Tubs, I believe the fitting on the end of the fuel line is brass, so perhaps
it will conform to seal. With this banjo set up, there’s a tiny amount of
metal on each side of the fuel line fitting that makes contact, hence, I suppose there’s a lot
of contact, pressure in the sealing area, which hopefully makes it leak proof!
Will soon find out. I finished up the mag and adjusted the points this afternoon.
Just need to check the gear lube and I can see if it will fire up….. oh yeah,
I better put the tiller handle back on.

New Bowden cable on order, but not sure if it will have a tight enough bending
radius to route the cable under the front cover….. it will have to made a tough
“S” curve…… which is why I’m guessing someone previous / devious drilled
a hole thru the front cover for the cable.

It will probably have to be a quick test start on the stand. Don’t think I can lift
it in my test barrel, and even if I did, a 16.2 hp is going to blow all the water out
in about 2 seconds!
If it starts and shows promise, I’ll put it on my boat and wait until I can
find someone to ride up front for ballast for a real test.

Prepare to be boarded!
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