What the!!! oko carb

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
sponge bob
registered user
Posts: 21
Joined: Fri Jan 09, 2009 5:21 am
Contact:

Having trouble with my carb (i think) i have a 24 mm pwk/oko and i lose power at full throtle and when on a hill at any throttle if hills to long, when i stall the scoot will fire up first kick and i'm away again ,also have a lot of spit back which is sucked in by the fly wheel and dumped over the barrel so looks like i have a leak some were.Have tried all settings with needle with not much change. Any ideas except buy a decent carb which is my next move. :roll:
User avatar
ArmandTanzarian
registered user
Posts: 1103
Joined: Wed Jan 07, 2009 6:26 pm
Location: Kent
Contact:

Been there, done that!

The OKO (or as my mates christened it "The Yoko Nogo") is prone to fuel starvation when running at full throttle. Basically, the scoot sucks it out of the float bowl faster than it flows in. By adjusting the float level you can improve things but if you bend the stop too far it just floods everywhere. You can drill out the inlet a bit but that can end in disaster. I eventually melted off the stop at in the plastic float bowl that was preventing the float from dropping down all the way.

On another subject re OKO, check the choke. The spring on mine was so weak that it didn't close properly. I then set up the carb to what I thought was correct. The float then closed, the mixture went lean and pop went my brand new mugello!

I eventually bought a Mikuni TM24
Meus Lambretta est non infractus. Is est quietus.
User avatar
soulsurfer
registered user
Posts: 2539
Joined: Thu Jan 08, 2009 2:43 pm
Location: The Garden Of England
Contact:

Yep been there too :roll:
If you have the clear plastic float bowl, there's a lug in the bottom, a float stop. Remove this by melting off with a soldering iron. If this doesn't work then some drilling may be required
Turn On, Tune In, Cop out!
Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 2 guests