Pre-tension automatic cable slack adjuster - AR42.20-P-0520-01A

1. Model 140: Detach exhaust system (only as far as necessary).
2. Turn detent eccentric bolt (g) to the left using the Allen wrench (approximately half a turn) and simultaneously push backwards in slot until the spring-loaded detent eccentric (b) engages with the raised section (h) in the holddown clip (d).

Fig 1: Turning Detent Eccentric Bolt

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.