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HD8 Carburetor Float Arm Setting

Goldie

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I just replaced my shut off valves in my HD8 carbs. They have a small spring loaded tab on the bottom. When I set the 7/16 clearance should I depress the tabs.The old valves did not have the spring tabs. I have watched several youtube videos on the clearance adjustment but none showed the type I now have.
 
I thought about this for a long time myself. Since the valves won't close until the springs compress that's where I set them. I believe the spring-loaded tabs (pistons?) are there to damp float movements, hence why some have them and some don't.
 
I thought about this for a long time myself. Since the valves won't close until the springs compress that's where I set them. I believe the spring-loaded tabs (pistons?) are there to damp float movements, hence why some have them and some don't.
I have watched Joe Curaco(sp?) Video on fuel bowls and I could not see any mention. Even watched a youtube on Jag HD8 carbs but that style valve was not mentioned.
 
Goldie--

Where did you buy them?
 
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