Zenith 28g carburetor on FE-35

oratio

Member
Trying to start my 1960 FE-35 which has been sitting 2-3 years. Carby (Zenith 28g)is overflowing, so I would like some help with
1. Replacing main gasket. I had to cut the old gasket around the part arrowed, in order to get to the float. What is that part, and how does it come off, as the gasket is under it?
2. Setting the float level. I assume this is the first area to look at with carby overflowing. I do have an after market manual, but setting listed (as shown) isn't clear to me. Can anyone interpret those settings please? Grateful for any help.
 
(quoted from post at 06:11:31 08/23/17) Trying to start my 1960 FE-35 which has been sitting 2-3 years. Carby (Zenith 28g)is overflowing, so I would like some help with
1. Replacing main gasket. I had to cut the old gasket around the part arrowed, in order to get to the float. What is that part, and how does it come off, as the gasket is under it?
2. Setting the float level. I assume this is the first area to look at with carby overflowing. I do have an after market manual, but setting listed (as shown) isn't clear to me. Can anyone interpret those settings please? Grateful for any help.
 
Well my computer went down and still acts up but what you have described sounds like the ventura its round and only fits one way. Is yours a standard motors gas model?
 
Thanks 2 tractors. I'm trying to upload a photo of the part, but not succeeding. I'll keep trying.
 
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It should just wriggle out . Mine was not too tight even though the bowl looked as if it was filled with swamp water at one time .
The 28G is a weird carburettor , the gasket forms the ' roof ' to the float chamber and so it can be susceptible to breaking down due to continual exposure to raw fuel .

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The last photo shows how I set the float level , I used plastic tube to act as a level sight marked at the appropriate height . The small sight tube was fed from the drain valve , the larger tube acted as a filler . Archimedes would be proud I would hope :D
 
FE35 Standard Motors Petrol engines are quite rare here in the US.Just wondering if you live here so I can add another FE35 gas model to my list.
 
No, I actually live I Australia. Surprised to hear though, what you say about Standard engines being uncommon in the U.S. What are people referring to when they talk about there "gassers" then? I assumed that was a petrol engine. Is there another variety? (I guess this means you won't be able to help with the float level then?
 
OK, I'll try wiggling. It seems fairly well set in, but I haven't really tried yet for fear of damage. Your float level tool is certainly ingenious..one to be proud of. How did you arrive at the correct level though?
 

US Fergusons are fitted with 'Continental' petrol engines .
It has been a while since I set the height but from memory the manual mentions the height as measured from the top of the float bowl side [ gasket line ] . Measure this on the inside then transfer to the outside , as I did with a texta pen , filling the float bowl will then see the fuel rise up the small clear plastic tube to the shut off point . From here it is a tedious process of tweaking the float adjuster tabs up or down and refitting the top and trying again . I needed to do this four times before the level of the fuel in the sight tube matched the level mark on the outside of the bowl .
 

To help remove the venturi tube try tapping the small corners with a soft wood block , one side , then another. If you can achieve some rotational movement then it will most likely come out fairly easily after that .
I did see one that had been put back together with gasket adhesive , that took forever in an ultrasonic cleaner to loosen .
 
I did get the venturi out with a heavy strap
and a pair of locking pliers (see pic). Got
a gasket coming; looking forward to setting
the floats. Thanks for the tips.
 

I don't know if the 18'' head noted in the setting information really makes a difference but I made sure the fill tube was at that height above the float just to make sure .
I have a home in Melbourne as well , Bayside suburb , the tractors are at the farm in Gippsland . Where are you [ roughly ] .?
 
I'm in the Dandenongs; Emerald area. I've tried a number of times now to upload a photo of the tecnique I used to remove thge venturi. Double and triple checked size; under 200kb. Any idea why it won't upload?
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I'm guessing the 18" head is the tank height above the bowl. Your method is making a lot of sense. The 17mm, yep, I can see that; any clues on the 2mm needle seating?
 

Again from memory; the 2mm is a freeplay between the little tab on the float and the top of the needle . But I would have to check this to be sure .
My wife's family lived at The Patch for some years .
 
OK, not too far from here. I'm puzzling over
that 2mm though. It seems to me when the
bowl is full, the float would be in full
contact with the needle. When the bowl is
low there would be much more than 2mm
clearance. Am I missing something?
 

Fantastic ! I have to say it's a welcome change to have someone actually let me know if a suggested solution worked or not . Really glad I could help .
Now go back to the shed and build yourself a bicarbonate of soda blaster and clean up the outside of that poor carburettor , it looks like the inside of a derro's underpants !
 
(quoted from post at 18:23:08 09/08/17)
Fantastic ! I have to say it's a welcome change to have someone actually let me know if a suggested solution worked or not . Really glad I could help .
Now go back to the shed and build yourself a bicarbonate of soda blaster and clean up the outside of that poor carburettor , it looks like the inside of a derro's underpants !
I should have blurred the background! Bicarb blaster? Should I Google that?
 

No need to Google it , use an air gun and a piece of plastic hose . One end into a box of bicarb from the supermarket the other formed into a crude venturi that sucks the bicarb up and blasts it out the end . Bicarb is water soluble so a quick wash will clean any residue out , it is also very mild and won't erode alloy or copper , it will remove loose paint and grim though .
Pictures should be self explanatory , ask if you're not sure of anything .

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(quoted from post at 16:13:15 09/09/17)
No need to Google it , use an air gun and a piece of plastic hose . One end into a box of bicarb from the supermarket the other formed into a crude venturi that sucks the bicarb up and blasts it out the end . Bicarb is water soluble so a quick wash will clean any residue out , it is also very mild and won't erode alloy or copper , it will remove loose paint and grim though .
Pictures should be self explanatory , ask if you're not sure of anything .

3249.jpg



OK, thanks. I can see the theory. Stand by. ????
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That is so simple! The type of duster gun I have is perfect for the job, it turns out. A matter of minutes to make the venturi and I was in action. The pictures attached show the tool, and the carburetor when I ran out of bi-carb. I love it! Many thanks for your second device idea.
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