Good morning everyone. I need advise on how to lower the idle on my baby. 1983 300TD. Haynes manual states that this is best left to the dealer but I would like to try the board first and see if I can adjust it myself. Thanks in advance.

__________________
96 Legacy LSi wagon
92 Mitsu Expo
95 525iT
1983 300TD clackclackclack sold
1972 Toyota Corolla wagon TE28 sold
1991 Galant VR4 pshhhhh non-op
1989 Montero RS pop's ride