Power unit 4 (0.4 kgf m, 3.0 ft Ib) (0.8 kgf m, 5.9 ft Ib)21 8 (0.8 kgf m, 5.9 ft Ib) (0.8 kgf m, 5.9 ft Ib) (0.8 kgf m, 5.9 ft Ib)19 18