SOHC.co.uk Forums > CB500/550
Slow jets
basketcase:
Misunderstanding on all sides!! I understand that the carbs have to come off the engine, do I have to strip the carbs right down after they are off or is it possible to access the slow running jets via the underside of the carbs by removing the float bowls, floats etc, or do I have to strip them completely? `cos last time I did that it took an absolute age to put them back together....and that was with notes and photo`s!!
Sorry for the misunderstanding!
Bryanj:
Yes jets come out with floatbowls(and maybe floats) removed---In fact thats the only way!
K2-K6:
Just a comment about running it dry. I've got an old lawn mower with a very small main jet and left with petrol in the float chamber it always ends up blocked, but letting it run dry it will always start next time without dismantling it to clean the jet. Jet size is only just bigger than a steel wire from a wire brush, similar to pilots on these bikes.
On the same tack, my 750 K6 would just about run to 5 miles with fuel off and gentle throttle to get the carbs dry so it's something you need to do as more of a routine on the way home from a run if you feel it would avoid the need to strip it down.
The 550 K3 appears to be one of the most sesitive to blocked jets judging by the other experience on the forum.
matthewmosse:
The 500 carbs are far less sensitive to the problem, I even had a project bike with full on furry alloy inside and out on the carbs - quite shocking to behold but a very cursory brush with a toothbrush and the engine started right up on the bench. The 500 airbox and carbs are also a tiny bit shorterr than k3 ones which is a massive boon for fitting and removing
florence:
I have to say I haven't ever had any trouble with my cb500/4 carbs either.
Points, however are always a problem, don't seem to be able to get hold of decent sets anymore.
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