Complete carb kit TSX-749 400B

Bret4207

Well-known Member
Anyone have a source for a complete carb kit, including the main nozzle, for a carb for a 420B/400B?

This post was edited by Bret4207 on 11/10/2022 at 05:28 am.
 
(quoted from post at 09:27:56 11/10/22) Anyone have a source for a complete carb kit, including the main nozzle, for a carb for a 420B/400B?

This post was edited by Bret4207 on 11/10/2022 at 05:28 am.

Expecting you have checked out YT's offerings. You could check with John Saeli. Macdonald Carb and Ignition would be another place to contact.
 
(quoted from post at 14:27:56 11/10/22) Anyone have a source for a complete carb kit, including the main nozzle, for a carb for a 420B/400B?

McDonalds lists a 749 kit but they don't picture or list the components, judging from the price it probably isn t a full kit. Other vendors will have the big bowl TSX kits also but I don't think you will find the main nozzle in any kit as nozzles are usually sold as a separate item as it is not a wear part that requires periodic replacement.

What is wrong with your nozzle? Cleaning the barrel holes is usually all that is required although I have seen them with mechanical damage, stripped or galled threads like the bottom threads in this pic.

TSX 749 nozzle MS p/n 47-365 >>> Case p/n B51823 is the latest Case p/n I have.


mvphoto99305.jpg
 
A Google search shows it as a buiness, but that doesn't mean it's legit because I've seen others show up with an address close to me and when I went to that address it was not there.
 
Looks more like a residence. Maybe more shade tree, nothing wrong with that though lots of room in the garage rear attached add-on.


cvphoto140338.jpg


cvphoto140339.jpg
 
Old, Check Jon out on the HAMB, over 3000 posts and 4000 likes over the past 14 years.
Scroll down to post # 8. I have installed bushings on car and tractor carbs.

https://www.jalopyjournal.com/forum/threads/carburetor-throttle-shaft-repair.1168283/#post-13279109
 
(quoted from post at 15:02:45 11/10/22)
(quoted from post at 14:27:56 11/10/22) Anyone have a source for a complete carb kit, including the main nozzle, for a carb for a 420B/400B?

McDonalds lists a 749 kit but they don't picture or list the components, judging from the price it probably isn t a full kit. Other vendors will have the big bowl TSX kits also but I don't think you will find the main nozzle in any kit as nozzles are usually sold as a separate item as it is not a wear part that requires periodic replacement.

What is wrong with your nozzle? Cleaning the barrel holes is usually all that is required although I have seen them with mechanical damage, stripped or galled threads like the bottom threads in this pic.

TSX 749 nozzle MS p/n 47-365 >>> Case p/n B51823 is the latest Case p/n I have.


mvphoto99305.jpg

It looks to me like a previous owner "fixed" the nozzle with a drill and a big rock. She's pretty mangled. The needle doesn't seem to go in nearly far enough and that's after chasing the internal threads.

Thanks to all, I'll do some more checking.
 
In many cases one can't always go by just what is seen online. Did you try calling or emailing McDonald with your questions, not just going by what you see online? I have done both and gotten help both times. Yes, you may have to buy some of the parts not commonly replaced separately from the correct kit. I would expect that with any carb kit you buy, even a "major" kit, based on experiences I've had.
 
(quoted from post at 11:33:32 11/12/22) In many cases one can't always go by just what is seen online. Did you try calling or emailing McDonald with your questions, not just going by what you see online? I have done both and gotten help both times. Yes, you may have to buy some of the parts not commonly replaced separately from the correct kit. I would expect that with any carb kit you buy, even a "major" kit, based on experiences I've had.


I'm likely going to have to do just that. I just hate talking on the phone!
 

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