03-25-2023, 11:18 AM | #61 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,733
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I drilled out the pilot air mixture screw adjustment blockoff and reset to about 2 turns out. I had previously rejet to 42 on the pilot jet, so took others advice and thought 2 turns would be OK.
It was WAY too lean on mine. I closed the air mix to just under 1 turn and it starts/idles great now. On the Keihin clone Youall smoothbore, this is an airscrew. Opening it adds more air to the mix. So closing it to 1 turn enriched the mixture. The main clue was popping and backfiring. These are signs of lean mixture. I was thinking CDI or something! It is HARD to get a screwdriver onto this. On mine it is right behind a frame stay. So I used this 4mm screwdriver bit on a short magnetized extension. This REALLY made adjustment easy:
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No matter where you go, there you are Last edited by Thumper; 05-11-2023 at 05:58 PM. |
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03-06-2024, 03:32 PM | #62 | |
Join Date: Jan 2024
Posts: 105
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