| Engine | Displacement | Bore & Stroke | Power output (max.) |
| 252707 | 399 cc (24.3 cu.in.) |
87.3 X 66.7 mm (3.44 x 2.63 in) |
11.0 HP at 3,600 rpm |
| 253707 | 399 cc (24.3 cu.in.) |
87.3 X 66.7 mm (3.44 x 2.63 in) |
11.0 HP at 3,600 rpm |
| 281707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
12.0 HP at 3,600 rpm |
| 282707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
12.0 HP at 3,600 rpm |
| 286707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
12.5 HP at 3,600 rpm |
| 289707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
12.5 HP at 3,600 rpm |
| 28M707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
13.0 HP at 3,300 rpm |
| 28N707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
15.5 HP at 3,300 rpm |
| 28Q777 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
15.5 HP at 3,300 rpm |
| 28R707 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
13.5 HP at 3,300 rpm |
| 28S777 | 465 cc (28.4 cu.in.) |
87.3 X 77.7 mm (3.44 x 3.06 in) |
13.5 HP at 3,300 rpm |
| 294447 | 480 cc (29.3 cu.in.) |
68.0 X 66.0 mm (2.68 x 2.60 in) |
14.0 HP at 3,300 rpm |
| 303447 | 495 cc (30.3 cu.in.) |
68.0 X 66.0 mm (2.68 x 2.60 in) |
16.0 HP at 3,600 rpm |
| 303777 | 495 cc (30.3 cu.in.) |
68.0 X 66.0 mm (2.68 x 2.60 in) |
16.0 HP at 3,600 rpm |
| 310707 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
16.5 HP at 3,600 rpm |
| 311707 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
16.5 HP at 3,600 rpm |
| 311777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
17.0 HP at 3,600 rpm |
| 31A607 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
15.5 HP at 3,300 rpm |
| 31C707 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
17.5 HP at 3,300 rpm |
| 31E777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
16.0 HP at 3,600 rpm |
| 31F707 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
17.0 HP at 3,600 rpm |
| 31G777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x 3.06 in) |
17.5 HP at 3,300 rpm |
| 31H777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
18.0 HP at 3,600 rpm |
| 31N707 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
18.5 HP at 3,600 rpm |
| 31P777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
18.5 HP at 3,600 rpm |
| 31P977 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
20.0 HP at 3,600 rpm |
| 31Q777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
18.5 HP at 3,300 rpm |
| 31R777 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
18.5 HP at 3,300 rpm |
| 31R977 | 501 cc (31.4 cu.in.) |
90.6 X 77.7 mm (3.57 x3.06 in) |
20.0 HP at 3,300 rpm |
| 331777 | 540 cc (32.9 cu.in.) |
94.0 X 77.7 mm (3.70 x3.06 in) |
20.0 HP at 3,600 rpm |
| 331877 | 540 cc (32.9 cu.in.) |
94.0 X 77.7 mm (3.70 x 3.06 in) |
21.0 HP at 3,600 rpm |
| 350447 | 570 cc (34.8 cu.in.) |
72.0 X 70.0 mm (2.83 x 2.75 in) |
18.0 HP at 3,600 rpm |
| 350777 | 570 cc (34.8 cu.in.) |
72.0 X 70.0 mm (2.83 x 2.75 in) |
18.0 HP at 3,600 rpm |
| 351777 | 570 cc (34.8 cu.in.) |
72.0 X 70.0 mm (2.83 x 2.75 in) |
20.0 HP at 3,600 rpm |
| 386447 | 627 cc (38.2 cu.in.) |
75.5 X 70.0 mm (2.97 x 2.75 in) |
23.0 HP at 3,600 rpm |
| 386777 | 627 cc (38.2 cu.in.) |
75.5 X 70.0 mm (2.97 x 2.75 in) |
23.0 HP at 3,600 rpm |
| 400707 | 655 cc (40.0 cu.in.) |
87.3 X 55.0 mm (3.44 x 2.16 in) |
16.0 HP at 3,600 rpm |
| 402437 | 655 cc (40.0 cu.in.) |
87.3 X 55.0 mm (3.44 x 2.16 in) |
16.0 HP at 3,600 rpm |
| 402707 | 655 cc (40.0 cu.in.) |
87.3 X 55.0 mm (3.44 x 2.16 in) |
16.0 HP at 3,600 rpm |
| 40G777 | 656 cc (40.0 cu.in.) |
75.4 X 73.4 mm (2.97 x 2.89 in) |
20.0 HP at 3,600 rpm |
| 40H777 | 656 cc (40.0 cu.in.) |
75.4 X 73.4 mm (2.97 x 2.89 in) |
22.0 HP at 3,600 rpm |
| 422447 | 694 cc (42.35 cu.in.) |
87.3 X 58.0 mm (3.44 x 2.28 in) |
18.0 HP at 3,600 rpm |
| 422707 | 694 cc (42.35 cu.in.) |
87.3 X 58.0 mm (3.44 x 2.28 in) |
18.0 HP at 3,600 rpm |
| 42A707 | 694 cc (42.35 cu.in.) |
87.3 X 58.0 mm (3.44 x 2.28 in) |
18.0 HP at 3,600 rpm |
| 44P777 | 724 cc (44.2 cu.in.) |
79.2 X 73.4 mm (3.12 x 2.89 in) |
26.0 HP at 3,600 rpm |
| 49M877 | 810 cc (49.4 cu.in.) |
83.8 X 73.4 mm (3.30 x 2.89 in) |
30.0 HP at 3,600 rpm |
