Recent Posts  By   (Read times)

The pilot jet adjustment is on the left front side, cables attach to bracket on the right side with cables coming in from the bottom.

I have carb body soaking in carb cleaner overnight

I'll recheck the vacuum lines, I did find a too tight intake valve but, it didn't make a difference when I put it back together after adjustment

My carb doesn look like the one you posted, where the fuel mixture screw is on bottom this one has a brass plug with wires connected. Looks like some type of temp sensor. It says Keihin on the side, has a 128 main and 38S pilot.

This thing is dumpin so much fuel at lower rpm it's fuel fouling plugs on short order but runs fine at anything over half throttle. I think it it had an adjustment where these 2 wires plug in , I might just get it to idle.

All the choke circuit appears OK, I'm tryin to hook up 12v to it and see if it expands the 3/16 or so over 5 min.

I'm not against dumpin this carb for something thats readily interchangeable and has all the adjustments and less wiring.

Looking for some help to tune this carb so the engine will idle. Engine starts fine hot or cold.

What I've done:
- Flushed fuel sytem, cleaned tank, pulled carb and cleaned thoroughly, replaced fuel filter, spark plug. Engine starts and drives well. But, will not idle. If you crack the throttle, it'll keep running but, it is way too rich with black smoke at low rpm.

I've read through carb tutorial on air/fuel adjust and nothing seems to take adjustment, either idle speed or mixture. The pilot and main circuit were blasted with carb cleaner and compressed air and appeared to be clear.

I've been nable to locate any diagrams on this particluar carb, any help is greatly appreciated.