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Join Date: Jul 2006
Location: Kennett Square, PA
Gravity feed petcock question(s)
Pulled off the o-ring and spring from the piston in McKnight's petcock to help out a fellow rider. So now I'm on a gravity feed until I get the replacement bits. I blocked off the vacuum line from the petcock and the line from the nipple on the front carb (one hose on each, blocked off with sundry parts). But the bike's running lean like...like...well, lean like a European Super Model (as in "so lean it's not healthy"). Do I need to block off the rear vacuum port as well? If so, why? And if not, why not? I understand the vacuum operation on the front carb, but I'm clearly not getting it on the rear one.
Oh, and does anyone happen to know - just offhand - the spring number for the piston? Ayers has the o-ring as a 4mm, but no info on the spring.
Last edited by Crobins365; 07-02-2008 at 10:11 PM.
Reason: Forgot to ask about the spring