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Discussion Starter · #1 ·
I'm in the middle of a carb clean process and either I have lost or they got chewed up somewhere along the way 3 O-rings. The schematics don't show these relating to a certain size, just that they are there. The 3 missing are noted below,



1) Vacuum Passage O-Ring

2) Idle Adjustment Needle O-Ring

3) Drain Screw O-Ring



I have a very good local source for O-rings, I just need to know the sizes for the three. I have one of the Vacuum and Drain screw so if needed I will use those as references, but the Idle Adjustment (which I do have, what's left of it) is toast.



You know 10 years ago I would have done something like this blindfolded, Nowadays it seems everything I am touching ends up screwed up. URGHHH!!!
 

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Where does this vacuum passage o-ring go that you refer to? Is it for the side plate on the carb that covers the ACV valve?



I have new idle mixture o-rings as well as the fuel cross over O-rings. The others I can come up with too. But first let me know about this vacuum o-ring.

Larry
 

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Discussion Starter · #4 ·
Where does this vacuum passage o-ring go that you refer to? Is it for the side plate on the carb that covers the ACV valve?



I have new idle mixture o-rings as well as the fuel cross over O-rings. The others I can come up with too. But first let me know about this vacuum o-ring.

Larry


yes, it should be the ACV valve. It is the one shown in your guide on page 27 under assembly.



I don't need the crossover o-rings, they were in great shape to begin with.



I should have thought about the idea of using the washer for the idle mixture o-ring.



To let you know how bad this is getting. I found that one of the passages on the ACV cover was blocked, i.e. the hard way. Was checking with spray carb cleaner and got me a face full of cleaner when it didn't go through the hole. At least I had my glasses on and only get a bit in the corner of the eye. Ain't life fun.
 

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Discussion Starter · #5 ·
Update, I found the idle mixture O-ring hiding inside another part. Sneaky little devil.
 

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Discussion Starter · #7 ·
Go to www.randakks.com. Randall Washington lists all the parts in his rebuild kit and includes the "O" ring sizes on that list.


Great source, thanks. Unfortunately it doesn't list the ACV o-ring. It is in the photo as included but not on the spec list. As I stated above I found my missing idle screw o-ring. But the list did give me the specs for the drain plug one. 2 down, 1 more to go.
 

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PM sent.
 

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There was also some sort of huge list over on the Australian site if I recall.
 

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I got some from Larry (LRCXed) that worked perfectly. Much cheaper than buying a whole set as I just got what I needed.
 

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Discussion Starter · #12 ·
Going to check out my local supplier tomorrow morning. Figured I'd just take the carb with me to size up the ACV one and I got the proper spec for the drain screw. It's one of those places if he ain't got it, then it's gonna be hard to find. I got both o-rings for the carb insulators last week for .88 cents. I'll post tomorrow after I make the run.
 
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