The Hatz Bore x stroke (69 x 65 / 2.72 x 2.56) is a 0.24 L engine rated at 3000 rpm, producing up to 1.6 kW. It powers generator sets from Hatz, including the 1 B 20. It holds 0.9 L (0.2 gal) of oil and 0.95 L (0.3 gal) of coolant.
| Oil capacity | 0.9 L |
|---|---|
| Coolant capacity | 0.95 L |
| Displacement | 0.243 L |
| Rated speed | 3000 rpm |
| Gross power | 1 kW |