Dav Jens
The bike is a 2005 TT600RE. I am told it has the exact same engine as the 1990-1995 XT600E but with bigger carburetors.
I was not trying to richen up the mixture in the entire middle range. There was an annoying small “flat spot” or a small hesitation in the powerband just before the second carburetor opened (I think).
There is no great science behind this adjustment. It was just a test that worked out. I read some posts were an Australian guy talked about this adjustment (advancing the opening of the second carburetor) and decided to give it a try.
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Yamaha XT600E '01, Honda XR400 '03, Yamaha XT550 '83
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