Carburetor Main passage bleeder

[ArtJ]

Main passage plug replacement

I heard back from customer support at zenith regarding the main passage
plug.

The part no is C138-24 for the plug
The part no is T56-23 for the washer

They gave me a couple of distributors to order from

VE Peterson in Ohio 1-800-537-6212

They also mentioned Syracuse & Electric in NY.

Regards

Art

[hanleyclifford]

Art - Check out McMaster Carr #7910K11. I'm not sure I buy that business about tapping a 3/8" NF to 1/8" NPT and getting a leak. I think I'll give it a try on one of my spare carbs. Regards, Hanley

[hanleyclifford]

Art - I did a little experiment. Drilled with "S" bit, not "Q". Tapped for 1/8"NPT. The plug is a Zenith carb drain item. Regards, Hanley P.S. Forgot to mention the nut was originally a 3/8"NF, same as the carb passage plug.

[ArtJ]

Thanks for the info Hanley

I will check it out
Regards

Art

[ArtJ]

Hanley

I checked out 7910K11


A couple of questions

The 1/8 version is not marine approved as are the larger sizes

What would be needed to adapt the 2 inch (wow big?) female to a
hose barb?

Regards

Art

[rheaton]

Why not just turn off your fuel line valve, and use the engine to run the fuel system dry.

[ArtJ]

For 2 reasons

First, the carb must be bleed with fuel to remove particles in the jet.

Second, if it was run dry, the system may need to be bleed again to
get the air out.

Regards

[ArtJ]

The reason for the bleed is when the engine shuts down due to jet
clog and you are
at sea and cannot bleed with a hot engine but need to run it to stay off
rocks or othe hazards.

Regards

[ArtJ]

I heard back from customer support at zenith regarding the main passage
plug.

The part no is C138-24 for the plug
The part no is T56-23 for the washer

They gave me a couple of distributors to order from

VE Peterson in Ohio 1-800-537-6212

They also mentioned Syracuse & Electric in NY.

Regards

Art

I just spoke with Peterson The Plugs are $4 each, so are the washers.
They had one plug in stock, will backorder a couple more for me.
They will ship via mail for a few dollars, vs $10 for UPS

Regards

[ArtJ]

Art - I did a little experiment. Drilled with "S" bit, not "Q". Tapped for 1/8"NPT. The plug is a Zenith carb drain item. Regards, Hanley P.S. Forgot to mention the nut was originally a 3/8"NF, same as the carb passage plug.

I warmly suggest that if this drain valve project comes to fruition we warmly and gratefully dub it the "Hanley Handle"


Regards

Art

[ArtJ]

I was just wondering, is there a standard hose barb that could be
directly threaded into the 3/8 passage? Possibly using one of the
90 degree street ells first for clearance issues? The shutoff could
then be in line with the hose at a convenient point. Possibly just
use a standard tank shutoff valve with barbs?

Would there be any issues with the standing fuel in the first section
of hose? Course it could be drained periodically. Would it affect the
jet operation?

Regards

Art

[ArtJ]

Barb directly to passage?

A thought just occurred to me - is it possible to direclly thread a hose
barb into the passage block, possible with a 90 degree street ell for
clearance issues first?

The shutoff could be put at a convenient place in the hose line, using
a standard tank shutoff valve with hose barbs.

Would there be any issues with having a section of hose with gas in it
directly connected to the main jet passage. Would this affect jet operation?

Regards

Art

[ArtJ]

Sorry about double post

[hanleyclifford]

Art - I think we are getting a little carried away with this business of "fuel approved" and "marine approved" as enunciated by office experts. Very few things on a boat are really "approved". How about fan belts, batterys, copper, coolant hoses. I"m not advocating dangerous installations but let's not get wrapped around the axle on labels. 7910K11 can be adapted with 9171K62 to obtain the "marine blessing" but as Neil has rightly pointed out we want to be careful about hanging too much weight on that carb bowl. Regards, Hanley

[ArtJ]

Hi Hanley

What do you think of the barb directly in idea? It would reduce weight
Regards

Art