Oops...went a bit too far on removing the Pilot screws

O.k, had 2 air mixture screws that had sheared heads. These are the mixture screws on the top of the Hitachi carbs. For my purposes i will call them pilot screws. So I decide the only route is to EZ out the screws. Get the smallest EZ out I can find, 1/8", then drill the pilot screw to fit. I got the screw extracted, at least the part with the threads. The rest of the screw along with the spring and the seals is still in the carb body. I am however able to adjust it so the bike will idle fairly well. What I need is a source for these unobtanium parts. Sudco no go, other carb parts sources, nada, bid on a set of 750 carbs off eBay, as a backup plan, but would prefer to keep the carbs I have now. On another tack, how accurate is the tachometer on our bikes. If I adjust the idle to below 1200 or so rpm's, by the tach needle, the bike feels like it is laboring and the take off is sloppy. If I raise the idle between 1200 and 1400, again by the tach needle, the bike launches beautifully, idles great , etcetera. So what doya think. I have the carbs synced close, the pilots are close, even with the stripped pilot screw, so just need to get a set of pilot screws. Any leads will be appreciated.

 

bikebandit.com or powersmotorsports.com

OEM Yamaha parts. Maybe they are available there? Mine are for my 86 X, altho the screw assemblies are $13 each.

 

Tries BB and Poweres. No luck. Thanks for the links though, cruzerjd

 

Got my replacement Hitachi pilot screws from motorcyclecarbs.com, but they're not cheap -- ~$30/screw. It would've been cheaper to get a new carb for parts, but I couldn't find one anywhere, and got desperate. At a certain point, it's better to just spend the money so you can ride.

 

losifer, I have a spare set of 650 carbs that I had bought for my XJ (spare parts, ya know). I sold the bike and no longer need the carbs. Other than needing to be cleaned up a bit more, the only thing wrong with them is that the posts that the floats are mounted to in one carb have broken off (like that when I got them). If you are interested in a spare set, let me know. I could probably let them go for about 75 plus shipping, just to get them off my workbench.

 

Beardking, I have a couple of sets earmarked on eBay but if i cannot get a set cheaper, i would be interested in your carbs. Will keep it in mind, cruzerrd

 

sounds good.

 

Beardking, p.m.'d you