Each year I always start with the initial setting recommended by MF, and then adjust as necessary, as conditions always vary from year to year. My reference is a single laminated MF sheet entitled PROFIT-BOOSTING ADJUSTMENTS FOR MASSEY-FERGUSON COMBINES, publication number 602 AG_5-75_10-5 and C602_570-5-2. It covers adjustments for small grain, soybeans and corn. Here are the initial settings for small Grains (wheat_barely_oats) and Grain Sorghum: Elevator, drum height: Bottom hole for light crops, raise one hole for heavy crops. Concave: Install slotted concave filler bars in wide spaced concave to prevent underthrashing (The illustration shows these filler bars to have vertical bars between each of the wide spaced bars, so you have the equivalent of a narrow-spaced concave). Concave Setting: front: 5_16" Rear: 1_8", grain Sorghum: Front 1_2" Rear: 1_8" Cylinder Speed: 850 to 1000 r.p.m.,grain Soghum: 800 r.p.m. Rear Beater: Use standard, plain vane-type blades. Grain Pan Screen: Use solid front section as furnished with combine. Triple Screen Shoe: Top 1-1_8" screen set 3_8" to 9_16", grain Sorghum: 1_4" Middle 13_16" screen set to 3_8", grain Sorghum: 1_4" Bottom front 13_16" screen set to 9_32" (or 1_8" to 3_16" diameter round hole full length screen),and bottom rear 1-5_8" screen set to 9_16". grain Sorghum: 1_4" front, 1_2" rear Fanning Mill: Adjust deflectors and air speed to keep chaff floating over full length of shoe - will need fan screens for Sorghum. Returns Cylinder and Rethresher: Add or remove channel-type concave sections as required for complete threshing of tailings.