1985 KT301 Carb - Throttle Shaft Bushing

[jdleach 525]

Well, I have searched the Internet, and contacted my local parts jobbers, and it appears that the later model KT301 carbs. did not have a throttle shaft bushing, just using a reamed hole in the carburetor body for the throttle shaft.

 

 

Does anyone know for certain that this is the case? If so, it looks like I am going to have to chuck my carb. body on the milling machine, drill and ream for a bushing, and turn one out on one of my lathes. Bit of a drag. Going to have to do something, as the shaft hole is pretty wallowed out.

[953 nut 60,204]

@Ed Kennell did a great post on doing this job using readily available parts and tools, perhaps he will come into this thread with it.

[jdleach 525]

1 hour ago, 953 nut said:

@Ed Kennell did a great post on doing this job using readily available parts and tools, perhaps he will come into this thread with it.

If there is a an available bushing, that will at least save me the time of turning one out.

[953 nut 60,204]

Here is Ed's Post on the subject.

 

[Ed Kennell 42,093]

Thanks Dick, for finding the post.    The #26 Carters I have rebuilt do not have a factory  throttle shaft bushing, but they do have a counter bore in the carb body that contains a fiber seal that is usually missing and when the throttle shaft clearance increases with wear, too much air leaks in around the shaft usually requiring half choke to keep it running.  I am not sure of the dia. of this counter bore,  but it is slightly less than 0.375 and the bushings that B Miller sells are the correct OD and length to press into the existing counter bore and restore the support and sealing of the throttle shaft to the carb body.

Because I did not have any of Millers correct size bushings on hand when I rebuilt the Raider, I simply bored out the counter bore to 0.375 and pressed in a stock 0.250 X 0.375  ACE hardware bronze  bushing. 

  This worked fine and the Raider that was running rough and required almost full choke to run is now running fine.  I have been amazed several times at the improved performance gained by installing these shaft bushings.

 

[squonk 43,887]

And getting parts from Miller can be a chore.  Wish someone else had them. 

[Ed Kennell 42,093]

                                                                                         

 

                                      I've had the best results by phone.     E-mails...forget it.