I think that's exactly what it was - a means to defeat the bystarter. It's the only logical answer, and based on a few small bodges I've discovered elsewhere (electrical tape where the airbox cap screw should go, a ragged, warped air filter, non-standard 'petcock' with a screw stuck in it to keep gas flowing, etc etc) it's in keeping with a PO's modus non-operandi.Clivester wrote:CaptDan wrote:Clivester wrote:

I've addressed all those issues except for the bystarter 'sleeve' - which I'll try removing later. But - the good news is - the bike starts up cold, after sitting overnight. First time that's happened. The idle, WOT, and general engine operation are smooth. So - I'm a happy camper.

There's a bit of occasional seapage at the carb's gasket seam, though. I'm probably going to have to replace the gasket. Also, you mentioned an O-ring in the mixture screw (I found the spring). It's missing as well as the one on the bystarter port. A gasket kit is definately in order.
So - I've learned a LOT these past few weeks - thanks to you and everybody here. You guys have obviously been through all this before, and your help is greatly appreciated.
CaptDan