Zetor 8621 Forterra turbo Operator's Manual page 308

Tractor equipped with four speed transmission with speed 40km/h, reduction gear, three stage Hi-Lo (torque multiplier),
FORWARD SPEED
Rear tires Total gear
ISO radius ratio
H 19,787
4 Hi M 22,878
L 26,484
H 28,326
3 Hi M 32,750
L 37,913
H 46,018
2 Hi M 53,207
L 61,593
H 66,238
1 Hi M 76,586
L 88,657
H 81,807
4 Lo M 94,586
L 109,496
H 117,111
3 Lo M 135,405
L 156,748
H 190,259
2 Lo M 219,981
L 254,655
H 273,859
1 Lo M 316,639
L 366,550
MAIN TECHNICAL PARAMETERS
TRACTOR SPEED Z 8621 - Z 10641 FORTERRA TURBO (30km/h)
reversor a front driving axle (24 forward speed 18 reverse speed)
16,9-38 18,4-38
(795 mm) (820 mm)
33,3 34,4
28,8 29,7
24,9 25,7
23,3 24,0
20,1 20,8
17,4 17,9
14,3 14,8
12,4 12,8
10,7 11,0
10,0 10,3
8,61 8,88
7,44 7,67
8,06 8,31
6,97 7,19
6,02 6,21
5,63 5,81
4,87 5,02
4,21 4,34
3,46 3,57
3,00 3,09
2,59 2,67
2,41 2,48
2,08 2,15
1,80 1,85
REVERSE SPEED
Rear tires Total gear
ISO radius ratio
H 24,498
3 Hi M 28,325
L 32,789
H 39,799
2 Hi M 46,017
L 53,270
H 57,287
1 Hi M 66,236
L 76,677
H 101,285
3 Lo M 117,107
L 135,566
H 164,549
2 Lo M 190,253
L 220,242
H 236,851
1 Lo M 273,850
L 317,016
Forth speed can not be shifted with reversor
308
16,9-38 18,4-38
(795 mm) (820 mm)
26,9 27,8
23,3 24,0
20,1 20,7
16,6 17,1
14,3 14,8
12,4 12,8
11,5 11,9
10,0 10,3
8,60 8,87
6,51 6,71
5,63 5,81
4,86 5,02
4,01 4,13
3,46 3,57
2,99 3,09
2,78 2,87
2,41 2,48
2,08 2,14