1989 115 etxf carb rebuild

[drsmith1]

I am rebuilding these carbs

1989 115ETXF Yamaha Outboard CARBURETOR Diagram and Parts

I'm finding it challenging to get #20 and #26 off. Any suggestions? Is it crucial to get all parts off when rebuilding or can carb cleaner and high pressure air do the trick?

[mygrady1]

If yours is like mine these are brass. What I did was put the carb in a vice and use a small flat screwdriver and give it a small tap on the left hand (unscrew) side of the screw. It will break it loose. I struggled with this screw on my first attempt. I used vice grips on a big screwdriver to no avail but when I used a small hammer with the small screwdriver, she came loose real easy.
Be careful not to lose the washers.
Also be careful of washers #21&12. They can stick in the bore and when HP is used they can vanish into never never land.
Yes, I believe it is always good to remove all things covering air passages and use HP air for blowing them out. Why do the job twice?