Idle adjustment.-- Base conditions- Engine is warmed up, only air source is thru the idle air valve(butterfly is closed,just binding slightly, no other air thru slide valve or vacuum leak), only fuel is from the FI pump plungers(none from CSV, etc.)
Goal: minimum fuel flow to get 800 rpm with the proper air flow to support 800 rpm.
1. Remove control rods from butterfly and FI pump. This removes any control rod linkage errors from idle adjustment.
2. Start engine and adjust idle air to get maximum rpm. Note rpms.
3. Stop engine. If rpms are greater than 800, push in and turn FI pump fuel adjustment disc(on back of FI pump) CCW two clicks(less fuel). If the rpms are less than 800, turn CW two clicks(more fuel).
4. Repeat 2 and 3 until engine idles at 800 rpm. Stop engine when adjusting FI pump. One click near the 800 goal.
5. With engine at 800 rpm, close idle air screw to reach 750 rpm. This give a 50 rpm rich setting.
Re-attach control rods to butterfly and FI pump. If this changes rpm, fix the linkage.
Happy Motoring!!