Massey Ferguson MF 820 Wheeled Tandem Flex Disc Harrow Specifications

Below are the general dimensions for the Massey Ferguson MF 820 Wheeled Tandem Flex Disc Harrow. You can find the manual here.
Massey FergusonMF 820 WHEELED TANDEM FLEX DISC HARROW  SPECIFICATIONS  
  * KILOGRAMS (WEIGHT-POUNDS)          
MODEL TOTAL   PER M (FT.)   WIDTH OF CUT  
  Max. Min.      Max.      Min. Max.      Min.     
5.79 M (19 ft.) 3583 kg (7900 lbs.) 3039 kg (6700 lbs.) 570 kg (383 lbs.) 497 kg (334 lbs.) 6.27 M (20’ 7") 6.12 M (20' 1")
6.40 M (21 ft.) 3674 kg (8100 lbs.) 3083 kg (6800 lbs.) 546 kg (367 lbs.) 475 kg (319 lbs.) 6.65 M ( 21' 10") 6.50 M (21’ 4")
7.62 M (25 ft.) 3856 kg (8500 lbs.) 3266 kg (7200 lbs.) 509 kg (342 lbs.) 436 kg (293 lbs.) 7.62 M (25’ 0") 7.50 M (24’ 7")
8.23 M (27 ft.) 4808 kg (10600 lbs.) 4128 kg (9100 lbs.) 566 kg (380 lbs.) 496 kg (333 lbs.) 8.51 M (27' 11") 8.33 M (27’ 4")
9.14 M (30 ft.) 5035 kg (11100 lbs.) 4309 kg (9500 lbs.) 533 kg (358 lbs.) 463 kg (311 lbs.) 9.42 M (30’ 11") 9.30 M (30’ 6”)
10.06 M (33½ ft.) 5216 kg (11500 lbs.) 4581 kg (10100 lbs.) 509 kg (342 lbs.) 454 kg (305 lbs.) 10.31 M (33’ 10") 10.08 M (33' 1")
*Approximate            
             
Angle of Gangs:            
Front Gangs - Fixed 20°          
Rear Gangs - Fixed 16°          
Wheel Tread Settings See Page 61          
Tires 9.5L x 15; 6 Ply          
  11L x 15; 6 Ply          
Gang Bolts 31.75 mm bars (1-¼ inches square)          
Disc Blades:            
Spacing *187 mm (7-⅜") or 235 mm (9-¼")          
Types Plain or cutout thickness          
Diameter:            
508 mm (20") 8 ga., 4.19 mm (.165"); 9 ga., 3.76 mm (.148")          
559 mm (22") 6 ga., 5.16 mm (.203"); 7 ga., 4.57 mm (.180"); 8 ga., 4.19 mm (.165")          
610 mm (24") 6 ga., 5.16mm (.203"); 7 ga., 4.57 mm (.180")          
Transport Width - Wings Folded 3.81 M (12 - ½ Ft.)          
Transport Height 3.81 M (12 - ½ Ft . ) - 25 Ft. Model          
  4.03 M (16 - ½ Ft.) - 33 - ½ Ft. Model          
*187 mm (7-3/8") spacing not recommended for 610 mm (24") diameter blades.