Can I read KTM LC4 640 Mikuni BST40 Jetting Guide on EtoBox?

KTM LC4 640 Mikuni BST40 Jetting Guide by pedroserus is a document available to read on EtoBox.

What is KTM LC4 640 Mikuni BST40 Jetting Guide about?

This document provides jetting recommendations for a Mikuni BST40 carburetor installed on a KTM LC4 640 engine. It includes the following key points: 1) The main jet should be changed from stock 142.5 to between 155-170, depending on exhaust and altitude, starting at 157.5 for stock exhaust or 165 for race exhaust. 2) The needle and needle jet can remain stock, but the needle clip should be moved to the second position from the bottom. 3) Modifications to the slide and spring can improve throttle respo

Author

pedroserus

Language

EN