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post #16 of 25 Old 11-30-2016, 02:46 PM Thread Starter
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Re: Leaking carburetor gasket - Um, help

That is what I was referring to. When I was cleaning the case at the solvent tank one of the machinists that works here, that used to drag race, helped me out and gave me a session of carburetor 101. I did get the brass seat out, I just needed a bigger screwdriver. When I put this back together the only parts that won't be replaced will be the float (which I am going to submerge in a container of water to see if there is a leak) the butterflies and shafts, and the high end needle assembly. So I am hoping to have everything back together tonight and ready to tryout tomorrow night.

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post #17 of 25 Old 11-30-2016, 05:00 PM
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Re: Leaking carburetor gasket - Um, help

I forgot one thing worth mentioning. If your kit was like mine, it included an o-ring that goes on the high speed adjustment needle. Make sure to put that on to prevent leaks around that needle. The original o-ring on mine was almost completely rotten.
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post #18 of 25 Old 11-30-2016, 07:27 PM
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Re: Leaking carburetor gasket - Um, help

Do a search here for "Marvel VD" or "onan VD". Someplace in all that I have posted pictures of the brass orifice that can get clogged or restricted. If it is restricted, it can cause a lean mixture that cannot be adjusted out.

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   24G (Onan 24hp)    24GLX - was 16G  (Onan 24hp)   8249 - was 8129 (Onan 24hp)
        818T (Onan 18hp B48)       8163T - was 8123 (Onan CCKA) 
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   5665 w/brakes        5665        5660        Pro-8         Pro-16 w/brakes

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post #19 of 25 Old 12-01-2016, 12:00 AM
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Re: Leaking carburetor gasket - Um, help

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Originally Posted by mcsquish View Post
Gerrard, well thank you I guess for being board and not being tired... I feel your pain. I found your photo and my carb (it's a "VD" model) does not use the spring, but what I am calling a "thingy" is the part that the spring mates to. Thank you for the sandpaper idea, I was thinking about doing something but using fine sandpaper sounds way better than what I was thinking... lol

I have the carb torn down and soaking in solvent tank here at work so hopefully I'll be putting it back together tonight.
Ok great, I didnt realize you had a diff carb than a Zenith/Bendix, I sure as heck dont know anything about your carb (actually dont know anything about mine either !) but when you said you had the kit w/2 diff gaskets I thought it was the same kit I had gotten because mine had two gaskets to, one for aluminum carb and one for cast iron. Well good luck. And before spring Im gonna have to put mine in a box along w/some cash and mail it to someone or somewhere to put it back together correctly because I cant do it. Its disassembled. cleaned totally, polished and has a new kit that will go with it when that time comes.
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post #20 of 25 Old 12-01-2016, 01:07 PM Thread Starter
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Re: Leaking carburetor gasket - Um, help

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Ok great, I didnt realize you had a diff carb than a Zenith/Bendix, I sure as heck dont know anything about your carb (actually dont know anything about mine either !) but when you said you had the kit w/2 diff gaskets I thought it was the same kit I had gotten because mine had two gaskets to, one for aluminum carb and one for cast iron.
No problem, I'll take any help.

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post #21 of 25 Old 12-01-2016, 02:36 PM Thread Starter
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Re: Leaking carburetor gasket - Um, help

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Do a search here for "Marvel VD" or "onan VD". Someplace in all that I have posted pictures of the brass orifice that can get clogged or restricted. If it is restricted, it can cause a lean mixture that cannot be adjusted out.
Thanks Richard, I found your photo and even though my carb looks different I made sure all of the passages were clean; I used some heavy fishing line I have.

When I started to reassemble I noticed a few things. One is that the orifice in the needle seat in the new part is larger than in the old seat (see attached photo); the needles are the same though. I also wish there was a replacement gasket for the main needle, there is one for the assembly, but not one for the actual needle. Lastly there are two different body gaskets, they are different materials (cork-like material and some black brittle material) and have different hole pattern (but both could work). The old gasket is the black material, but the hole pattern matches the new cork-like material. I went with the matching hole pattern even though the material was different; I'm hoping I didn't mess that up.

Thank you again everyone for the help, I'm learning a lot.
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post #22 of 25 Old 12-01-2016, 04:14 PM
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Re: Leaking carburetor gasket - Um, help

odd don't gaskets match the carbs. not what someone else did! it does leak you said. they may not of had both of them. like you do
and i hope that new orifice is just a bad pic. old one looks better to me just needs cleaned

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post #23 of 25 Old 12-01-2016, 04:34 PM Thread Starter
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Re: Leaking carburetor gasket - Um, help

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odd don't gaskets match the carbs. not what someone else did! it does leak you said. they may not of had both of them. like you do
and i hope that new orifice is just a bad pic. old one looks better to me just needs cleaned
The kit I got is used for more than the carb I have, which is normal, I'm told. Also the inside of the seat looks better than the end in the photo, I just wanted to show the difference in the hole size.

SCott

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post #24 of 25 Old 12-02-2016, 12:34 AM
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Re: Leaking carburetor gasket - Um, help

Im beginning to wonder if you got the right re-build kit. Did you look into that? After this comment Im done because I dont know jack about them really lol! Considering I cant even fix my own I mean......Good luck!
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post #25 of 25 Old 12-02-2016, 11:30 AM Thread Starter
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Re: Leaking carburetor gasket - Um, help

When I bought the kit I asked several times that it was for a "VD" carb, and the guy behind the counter was positive it is the correct kit. Last night I finished putting everything back together and I'm hoping to fire the tractor tonight after work. I'm hoping that between rebuilding the carb and checking the valves it will run better and stop shooting flames out the exhaust when it backfires when I'm trying to start it up.

And again, thank you everyone for the posts; this has been a learning experience.
Scott

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