Motorcycle Questions? Ask a Mechanic.
Hello, when you had the carb apart did you clean the main jet and passages with compressed air?
Thanks, ***** ***** know it running at idle with chooke on means it's running lean. Since we know all the paggages are clean the next thing would be float level. Was it set at 18.5mm?
I have reviewed the exchange with the previous expert.
The one thing I have not seen is mention of the needle jet being installed upside down.
Here is a parts diagram so I can explain what I mean by referencing numbers in the diagram for you.
The needle jet is the part numbered 2. Before you remove it, take the top off the carb and pull the slide out. Look down at the needle jet installed in the carb. You want to see a taper that would feed the needle into the jet. If it is upside down, you will see a convex shape facing up. If you aren't sure whether you are looking at the tapered in end or the convex end, remove the needle jet holder (#26). Now take the needle jet out. You may have to use a punch to push it out. It is a snug fit but not ridiculously tight. Once you have it in your hand, you will notice the difference between the two ends. One is the convex end which is designed to be installed down so it fits perfectly into the needle jet holder's concave design.
This is a fairly common problem among less experienced techs and week end warriors to install that jet upside down.
Give that a shot and let me know if you need more help.
Were you able to get a look at your needle jet yet?