R420 Gasoline Engine
- Engine Type: Single-cylinder, 4-stroke (OHV)
- Bore × Stroke: 90 × 66 mm
- Displacement: 420 cc
- Compression Ratio: 8.5 : 1
- Net Power: 8.8 kW @ 3600 rpm (≈ 15.0 HP)
- Net Torque: 26.5 N·m @ 2500 rpm
- Starting System: Recoil / Electric starter
- Ignition System: Transistorized magneto ignition
- Lubrication System: Forced splash
- Carburetor: Flat suction valve carburetor
- Fuel Tank Capacity: 6.5 L
- Oil Capacity: 1.1 L
- Dimensions (L × W × H): 465 × 415 × 440 mm
- Net Weight: 31 kg
- PTO Shaft Rotation: Counterclockwise (SAE 1-inch, taper Ø23)