The carb rebuild went fairly smooth with two exceptions. I could not get the air pilot screw out of the #1 carb so I just left it alone, and when I went to tap the float pin out of the #4 carb, the two posts on the body fell off. Upon inspection it was clear that they had previously been JB welded. I cleaned them up and re-JB welded them and hopefully they work ok. I changed the tach cable and seals and it's not leaking or causing the needle to jump around on the gage anymore.
Now the questionable stuff. The speedo had quit working and based on a prior post, I replaced it. I had to loosen the nut on the front axle to rotate the speedo unit enough to be able to loosen the cable. After replacing the cable, during a three mile test ride the speedometer is now working again, but there is a hellaciously loud whining noise (almost like a light grinding noise) coming from the speedo gage. I realize now that the subtle whine I was hearing before that I mistook for for a vacuum leak in an intake boot was actually coming from the speedo gage.
When I took the tank off, it was about 1/4 full and I had some gas pour out of the fuel line after it was removed. I thought the petcock would not permit fuel to leak out, so I suspect I may need a new petcock. It is the type that does not have a lever - just a screwdriver slot. Also, when I removed the boots between the carbs and the air filter box, all four boots looked like they had been on fire - all melted down. Anyway, after I put everything back together I noticed some fuel dripping out from the chrome air box cover on the left side.
So after all that, here are my questions:
1) What's up with the speedo? Could I have overtightened the front axle nut and would that have caused the loud whine? I don't believe these gages are made any more, so I need to make this one work.
2) Do I need to replace the petcock? I know they can be re-built, but a whole new one is only $59.00.
Thanks for any insight.
Barry
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