The part number on the fiche is not the same as casting numbers on parts. As for interchangeability, compare the part numbers on the fiche and make ...

O.K. Bret. First off, I have never owned or worked on a bike with 40mm carburetors, I would go with the assumption that they are similar in function ...

..."Very slight, perhaps a couple thousandths, up and down movement of jet needle in slide."... My next move would be to get to the bottom of that ...

Great looking bike. There are a great many Airhead members in the greater Chicago area. Be sure to contact me if you have questions about your bike. I...

Many years ago, I had a BSA Thunderbolt that developed a rod knock after an episode of spirited riding. I never did determine the exact cause. Are yo...

..."The only reason not to buy a used engine is if you need that particular engine number due to a special model or limited edition."... Numbers ma...

..."I guess we now have to do all our own work?.... I made that decision many years ago. I guess you could open up the oil filter chamber to s...

How many miles on the motorcycle? The only service on the list that might have an effect on the internal motor parts would be the oil change. Did the...

You might be able to fit a plug with "oversized" threads. I once used an oversized piggy back plug on the drain hole of a 4 speed transmission of a /5...

I saw a /5 several years ago that had a replacement switch with an actual key installed in the top of the headlight where the original set-up used t...

This is pure speculation on my part, which I am loathe to engage in as a general rule. Your /6 has the type of fork that requires the end of the damp...

At the risk of stepping on Wobbly's toes, The camshaft is the interior motor part that creates the lifting effect of the push rods, rockers arms and...

It's good to have an experienced practitioner assess your parts if for nothing more than peace of mind. The only time I ever found a badly ovalled cy...

The 1988 R100RS that I used to own already had the pulse air and other emission related parts removed by a previous owner. It had the vacuum ports ca...

Another option for you would be to contact your North Carolina Airmarshal. Airmarshals are the keepers of the state membership lists. That person ou...