Main metering jet

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Main metering jet

Postby Born1928 » Sat Mar 26, 2011 8:30 pm

I believe I have tracked the engine running problems on my 154 Lo Boy to the main metering jet on the installed Zenith carbuetor. The carb is obviously a retrofit form the OEM IH carb. I'm not sure it's the same as the 68YYT Zenith pictured in the shop manual. For instance, the shop manual calls for a size 21 jet. The one in my carbuetor is a #19. Looking at the orifice the diameter seems too small to effectively pull fuel from the float bowl. Of course, since I am not an expert on carburetors I could be wrong. I have looked over the various sites concrning parts for the Zenith and it looks almost impossible to purchase a main metering jet alone. My carbuertor has been cleaned thoroughly and I do not believe I need an entire carbuetor repair kit. Any sources members may know of?
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Re: Main metering jet

Postby Don McCombs » Sun Mar 27, 2011 8:32 am

Try these folks...

Wahlberg-McCreary, Inc.
3810 Dacoma
Houston, TX 77092
Phone: 713-684-0022 or 866-215-7918
Fax: 713-684-0020
Don McCombs
MD, Deep Creek Lake

"1950 Something" Farmall Cub
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
1951 Farmall Super C w/FH
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Re: Main metering jet

Postby patterdale » Mon Mar 28, 2011 6:16 am

If you can't find the jet you could do a little research and find out what the correct "numbered" size drill bit is and just drill the old one out.
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Re: Main metering jet

Postby BigBill » Tue Apr 05, 2011 3:30 pm

Try mcdonalds carbuerator i'll get back here with a web address he has all kinds of carb parts. I get all my carb kits from him(zenith & IH) one stop shopping for both.

Go to; http://www.mcdonaldcarb.com
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.
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