BS34 Rebuild - Throttle Shaft lateral movement

[FreoWA]

Hi Lads,

Nearly finished my way through rebuilding 2 sets of BS34 carbs, everythings been hydro blasted, plated, cleaned and sealed.

One thing I forgot to do and was hoping for some help with was measure how much play the throttle shaft shown in the picture attached has. I've re-installed them and there seems to be at least 3-5mm play left and right.

Any ideas? I havn't tightened up the throttle shaft screws yet which should limit the movement however i don't seem to remember such a big gap on this throttle shaft, am i missing a washer/spacer?

Mike

 

[5twins]

It's hard to tell from your pic but yes, you may have left a washer out. There's a plastic washer between the spacer and carb body .....

Install the return springs before tightening the throttle plates. They will pull the shafts over tight towards them so need to be in place. With the screws just snug, open the plates fully and let the springs snap them shut several times. This centers them in the bores. Then finish tightening the plate screws completely.