RATO R420

The RATO R420 is a high-powered, commercial-grade petrol engine built to take on demanding workloads with ease. With rugged construction and impressive output, it’s ideal for heavy-duty water blasters, agricultural equipment, generators, pumps, and more. Whether you’re in construction, farming, or industrial service, the R420 delivers dependable, long-lasting performance.

Key Features:

Hard Working and Robust

The R420 is designed with a proven OHV (Overhead Valve) layout to improve combustion efficiency and extend engine life. Built with a cast iron cylinder sleeve, forged steel crankshaft, and reinforced components, this engine is engineered to withstand tough working environments and prolonged use.

An improved combustion chamber design allows for smoother running and better fuel efficiency, while a large muffler and optimized air intake system help to reduce noise and vibration during operation. With a low oil shutdown system included, your engine is protected even in rough working conditions.

Great Features

Packed with practical and performance-driven features, the R420 includes a large-capacity fuel tank for extended run time, dual oil fill points for easier installation, and a heavy-duty recoil starter. The precision-balanced crankshaft ensures reduced vibration and smooth operation across all RPM ranges.

It’s available in both manual and electric start options, giving users flexibility depending on their application. Maintenance is simple with easy-access service points and durable components throughout.

Performance

• Model: R420
• Type: 4-stroke OHV, single-cylinder, horizontal shaft
• Bore & Stroke: 90 x 66 mm
• Displacement: 420 cc
• Compression Ratio: 8.5:1
• Net Power: 8.8 kW (11.8 HP) @ 3,600 rpm
• Max Net Torque: 26.5 Nm @ 2,500 rpm
• Ignition System: Transistorised Magneto
• Starting System: Recoil Start
• Cooling System: Forced Air
• PTO Shaft Rotation: Counter-clockwise (from PTO side)
• Fuel Tank Capacity: 6.5 L
• Fuel Consumption at Rated Power: ≤ 4.45 L/h @ 3,600 rpm (based on ≤ 374 g/kWh)
• Recommended Fuel: Unleaded Petrol
• Recommended Oil: SAE 10W/30
• Lubrication System: Splash