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Zenith carburetor rebuild

A

Anonymous-0

Well-known Member
I have never done this but I am going to give this a shot and have ordered a rebuild kit- plan to work on it this weekend. Should I soak the carburetor in a container of carburetor cleaner for two or three days before I start? I haven't received the kit with instructions yet.
 
(quoted from post at 10:45:34 11/17/10) I have never done this but I am going to give this a shot and have ordered a rebuild kit- plan to work on it this weekend. Should I soak the carburetor in a container of carburetor cleaner for two or three days before I start? I haven't received the kit with instructions yet.
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If the carburetor is from a currently good running tractor, then soaking it overnight is sufficient, but DO use something other than that Berryman's Chem-Dip carburetor cleaner. I recommend going to a good auto parts store and get some "gunk" carb cleaner.

If that carburetor is from a fence row derelict, I wish you luck.
 
Yes soak the carb. But do yourself a favor and clean it before you do. If it is your typical been on the tractor a while carb it will be pretty grubby on the outside and you don't want chaff and grit in your can of cleaner along with your carb. Get and old toothbrush and a spray can of carb cleaner and thoroughly remove any crud you can and then soak it. Be sure to clean your sediment bowl and have a good critical look at your gas tank before you put your newly cleaned and kitted carb back on and start trying to run it. I have taken to using a temporary rubber gas line with a gravity compatible filter for the first few weeks (or months) to make sure any issues I might have are not related to adding dirt into the equation. MAYBE you can avoid some of the mistakes that I made. HTH
 
My understanding is that the tractor has not run in about 1 year. It does have a lot of build up of grime on it. Should I take it apart first before I soak it? Thanks
 
(quoted from post at 12:32:27 11/17/10) My understanding is that the tractor has not run in about 1 year. It does have a lot of build up of grime on it. Should I take it apart first before I soak it? Thanks
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Yes, take it apart first. Very little is accomplished by immersing the complete carb other than to make a total mess on your hands when you do take it apart, and if you are using the GOOD carb cleaner, you DO NOT want it on your hands.
 
Don't soak the venturi too long. I let one soak for over a week while the kit was being delivered and it started to eat it up.
 
(quoted from post at 18:01:15 11/17/10) Don't soak the venturi too long. I let one soak for over a week while the kit was being delivered and it started to eat it up.
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That venturi was most likely pitted before you put it in the cleaner, but you couldn't see it because of the other dirt. Most of the venturis that I remove from the H and M carbs are already pitted. I just clean them up the best I can and put them back in. The tractor never knows the difference.
 
(quoted from post at 04:28:23 11/18/10) Whats wrong with Berrymans? (Other than that awful smell) I use it all the time!
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If you've ever used the old timey stuff such as "Gunk" or the NAPA labled carb cleaner, you would know the difference. The can of Berryman's that I bought will not even wrinkle the paint on a carburetor let alone dissolve the varnish on the inside, and it makes no difference if you leave the carb soaking in it for 3 hours or 3 days. And for what it's worth, the Berryman's does not even smell like carb cleaner. If you think Berryman's has a bad odor, you should get a whiff of the GOOD stuff.
 
I usually get a paint or coffee can and soak the fully disassembled carb in denatured alcohol. Then take a can of carb cleaner to spray out the passages. Then I wash it with soapy (simple green) water and use an air compressor to dry all the passages. Doesn't smell bad and the alcohol will dissolve all the varnish and even soften the paint. Even after months of soaking it doesn't seem to affect any of the internal parts.
 
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