The KTM LC4 engine is a single-cylinder work of art, but it is not without its faults. One the more well-known issues with the 690cc thumper is its slave clutch design, which is prone to failure and leaks.
For anyone who has experienced the issue (including this author), it is a less-than-fun situation when the clutch system loses pressure and fails to disengage, but KTM has finally acknowledged the issue, and has begun a worldwide recall of KTM and Husqvarna motorcycle that feature the design.