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1978 CB550 K3 "running" restoration

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Bryanj:
Cant remember exactly but the CB550K3 supplement is mostly about carbs and settings

SPR:
Ok - need a little assistance ....

Got the carbs off without much trouble but did notice that the two middle rubbers to the air box had no clamps

The carbs look to me that they have been cleaned ?

I’ve checked all main jets and all are clear and clean

I did find that the mixture screws had all been set to just less than one turn - could this have been the problem of not wanting to rev easily above 3500 rpm ?

I’ve noticed that one float ( 2nd from left ) has no springiness to it - all the others you can gently tap and they go down and up ?

What do I need to do to this float please ?

All the pics are as. I’ve found it - nothing cleaned inside or out

Thanks

Simon


 

Nurse Julie:
Sound like you need a new float needle for the one that isn't springing correctly.

hairygit:
Also, the pilot jets could have been incorrectly adjusted because of the air leaks where the clamps were missing. The clamps need to ALL be fitted and tight, otherwise random air leaks will mess with the mixture and you will never get it running smoothly and reliably.

Sent from my POT-LX1 using Tapatalk

SPR:

--- Quote from: Nurse Julie on April 12, 2020, 11:53:56 AM ---Sound like you need a new float needle for the one that isn't springing correctly.

--- End quote ---

I was worried it may be that - I've removed pin / float black thing and the needle is clean and springing properly

So I've slightly adjusted the metal tang bit that touches it and after a little trial and error it now moves and springs like the other three

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