300SD (126.120) L5-3.0L DSL Turbo (617.951) (1982)
8. Check idle speed, loosen counter nut (3), if required, and adjust idle speed by means of idle speed adjusting screw (4) to 700-800 rpm.
9. Attach connecting rod so that it hangs freely. Adjust control linkage if necessary.
10. Move selector lever back to drive position. switch automatic air-conditioner on and turn power steering to full lock, making sure that engine
runs smoothly. Adjust speed if necessary.
11. On Model 116 up to model year 1979, accelerate with accelerator pedal while simultaneously turning knob for idle speed adjuster to the left.
Speed should now amount to 1000-1100 rpm. Adjust by means of adjusting screw (2), if required.
Attention: The idle speed control range will be exceeded if a higher speed is set. The engine speed may then rise to maximum revolutions (at
no-load).