Topic: cb 550 sucks.

[chippyfive50]

my cb 550 sucks... the choke closed at half throttle....     I dont see any missing parts/spring compared to the exploded parts diagram. Is there a friction
adjustment somewheres I am missing??...anyone....

[csendker]

What year?...my '75 choke is integral to the carb.  Later models have a cable up to the bars. I suppose it might make a difference.

[chippyfive50]

I suppose I should have mentioned the carbs are off of a 71'  500, all manual, "OLD SKOOL"  to use the parlence of our times.

[Noel]

the choke closed at half throttle....

Huh? You mean you were riding it and at half throttle, the choke activated itself?

[csendker]

If I'm reading you correctly, your choke is loose and gets sucked into a closed position under speed?

I just took a real quick look at mine.  There's a spring-tensioner of sorts visible on both of the inboard carbs (#'s 2 & 3) that seems like it would impose a lateral load on the choke shaft, in effect 'tightening' it by trying to 'pull' the shaft out of the body.  I didn't look too hard to see if there's one on the backside of the outboard carb choke shafts.  The choke actuator - the little handle thingy - is riveted onto the shaft, so there has to be something on the backside to allow for dissassembly.  Maybe that can be tightened.