Pruning is an important operation in kiwi cultivation, and it is done with the help of pruning shears. This operation is performed above the shoulder height of workers, which causes a heavy load on the shoulder. The biomechanical load on the workers during pruning was evaluated. The posture of the workers was measured and was analyzed using the Kinovea software. A manikin was developed on CATIA V5R21 software to estimate the moment, back compressive force (BCF) at L4-L5, and Rapid Upper Limb Assessment (RULA) discomfort score. The moment and BCF at L4-L5 during pruning with a shear were 78 Nm and 1640 N, respectively, and the RULA discomfort score was 7. The RULA discomfort score suggests changing in posture to reduce musculoskeletal disorder. Therefore, a long-handled manual kiwi vine pruner was designed. The major components of the developed pruner were a pruning shear, handle, lever, and cable. The pruning shear was provided at one end of the handle, while the lever was provided at the other end of the handle. A cable was provided between the lever and shank of the shear. The developed pruner considerably reduced the moment and BCF at L4-L5 during pruning compared to pruning with a shear, and its values were 12 Nm and 562 N, respectively. The RULA discomfort score was reduced to 3 by using the developed pruner. The developed pruner also increased the number of vines cut by 44.6% as compared to the pruning with shears.