Zoran:

Refueling Procedure:
Proceed as follows until your intended amount of fuel is reached:
1.  Load all main tanks equally.         (4 x 15,500 lbs = 62,000 lbs  =   62,000 lbs)
2. After #1 and #4 main tanks are full, continue to load #2 and #3 main tanks.      (+ 2 x 11,760 lbs = 23,500 lbs  =   85,500 lbs)
3. After all main tanks are full, load reserve tanks.      (+ 2 x   2,900 lbs =    5,800 lbs  =   91,300 lbs)
4.  After all wing tanks are full, load the center tank.      (+ 1 x 68,300 lbs = 68,300 lbs  = 159,600 lbs)

Fuel Management:

Check periodically:
IF Center Tank exceeds 20,000 lbs AND less than 12,000 lbs of total fuel consumed
THEN “Center Tank to Outboard Engines, Main Tanks to Inboard Engines”:
- Boost Pump Switches in Main Tanks 1, 2, 3, 4 & Center Tank....ON
- Crossfeed Selectors No. 2 & 3....CLOSE
- Crossfeed Selectors No. 1 & 4....OPEN
ELSE
IF Center Tank contains less than 20,000 lbs OR 12,000 lbs or more consumed
THEN “Center Tank to All Engines”:
 - Crossfeed Selectors No. 1, 2, 3 & 4....OPEN
 - Boost Pump Switches for tanks No. 1, 2, 3, 4 & Center....ON
ELSE (Center Tank empty)
  IF Fuel amount in Inboard Tanks > Fuel amount in Outboard Tanks + Reserve Tanks
  THEN balance main tanks: "Inboard Tanks to all Engines"
  - Crossfeed Selectors No. 1, 2, 3 & 4....OPEN
  - Reserve Tank Transfer Valves No. 1 & 2....OPEN as soon as Tank No. 1 ( No. 4) can take in whole content of left (right) reserve tank
  - Boost Pump Switches for tanks No. 1, 4 and Center....OFF
  - Boost Pump Switches for tanks No. 2 & 3....ON
  - 2nd Boost Pump Switch for Tank No. 2 or 3, whichever has less fuel....OFF for balancing
  - Center Tank Boost Pumps....OFF
  ELSE
   IF Inboard Tanks = Outboards + Reserves:
   THEN “Each Main Tank to its Engine”:
   - Boost Pump Switches in Main Tanks No. 1, 2, 3  & 4....ON
   - Center Tank Boost Pumps....OFF
   - Crossfeed Selectors No. 1....OPEN
   - Crossfeed Selectors No. 2, 3 & 4 ....CLOSE


Best regards

Alex