SOHC.co.uk Forums > CB500/550

carbs cleaning an reftting

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MIKE550/4:
jet sizes after cleaning the jets, 42 stamped on slow jet, cant see any number on  main jet but would say 90

now this was running on pods ? are these jets for original air filter set up?

also slow jet has a slight bend less than 1mm could these be reused as new one not available till end of march?

thanks all

matthewmosse:
I might be able to sneak out to the shed tomorrow and look at my spare 550k3 carbs and see what it has fitted. I did get some new k3 jets off silvers 10 years ago - not a full set, just 4 jets - think they were slow jets, I was hoping to get the rest as they came available and rebuild mine, but still haven't used them. I could well be wrong about which jets they are and couldn't swear to where I put them. One thng I do recall, I found a lot of my issues with that bike ended up being not the carb jetting but a broken return spring that seemed to operate ok off the bike but once fitted was that bit too weak to close the carbs against the resistance of the cables all the time.

MIKE550/4:
cheers Mathew

Sirius list 2 both say will fit k3

http://www.siriusconinc.com/pro-detail.php?pid=&product_id=1107

42
 out of stock till end of march

http://www.siriusconinc.com/pro-detail.php?pid=&product_id=1109

35

in stock

so what is the difference between the two and any way I can use the no 35 jets ?

Bryanj:
The number is the size of the jet, bigger the number more fuel, I will look at the manual later and see if it quotes a size standard

Bryanj:
According to the Honda 550K3 manual supplement:-

Main jet 90
Air jet    130 (don't ask me where this is as I don't know!)
Slow jet  38
Slow air jet 150 (don't know either!)
Jet needle setting   3rd groove E2349F
Float height 14.5mm
Pilot screws 1 1/2 turns out

There are different numbers for the 500K3 which was never officialy imported to either UK or USA but was in Europe

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