[Zmagnette] H2 leakng at float bowl junction

Fletcher Millmore gofanu at cust.usachoice.net
Sat Apr 5 18:58:44 MDT 2014

There are (at least) 3 versions.

ZA H2 should have
bolt AUC 1541  (two stepped bolt)
w/ 2x fibre washers AUC5026  and brass washer AUC5027 underhead (F-B-F)
  and thin fibre AUC2130 between bowl and body

Later carbs used  a different bolt arrangement:
Bolt AUC1835 (single step fat bolt)
w dished steel washer AUC1887 underhead
2x AUC 1584 rubber grommet

Later stud arrangement is:
Stud ("banjo pillar") AUC1887
fibre AUC1884 (I think fibre, may be copper, not specified except as 
"plain") underhead to body
Flat steel washer AUC1889 against pillar hex
AUC1584 grommet x2
Flat steel washer AUC1888
Nut AJD8206Z

I believe all of these are interchangeable AS  SETS - but it is V common 
that they are mismatched and incomplete.

As I always recommend, lubricate the threads and bolt underhead with 
Lubriplate, and soak the fibre washers in warm oil for a few hours to 
eliminate leakage problems.


On 4/5/2014 8:07 PM, Steven Trovato wrote:
> Steve K,
> An SU carb can have a stud or a bolt holding the bowl to the body.  
> Based on Roger's comments, it seems he has the bolt.  These have just 
> two rubber seals, one on top and one on the bottom of the bowl arm.  
> If you have the stud version, then there is a sandwich of three 
> washers on the bottom.  Is this what you are referring to?  I don't 
> know what other thin gaskets you mean.
> -Steve T.
> At 03:33 PM 4/4/2014, Steve wrote:
>> in addition to what SteveH said, I trust you do have those thin 
>> gaskets in place?  And, it is very easy for those thin little buggers 
>> to not seat properly when you tighten them down.
>> #2SteveK
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