The service manual on the beta website should show you how to get the carb off. Version xtrainer 250 2t europa xtrainer 250 2t xtrainer 300 2t europa xtrainer 300 2t main jet 130 155 130 155 slow jet 38 38 38 38 start jet 50 85 50 85 needle n84k n0zk n84k n0zj needle position from top 2 3 2 2 air screw turns from all closed 2 1 1 4 2 1 1 2 valve 7 5 7 5 7 5 7 5. Seems like beta did a decent job of this as well.
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