COX CPV550-3EI Vertical Shaft Engine – 16.8hp (EFI, Electric Start) Overview The CPV550-3EI is a 547cc vertical shaft petrol engine equipped with Electronic Fuel Injection (EFI) and electric start. Designed for medium to large ride-on mowers, it delivers 16.8hp and 34 Nm of torque through a 1" keyway shaft. With CE and EC(V) certifications and a compact footprint, it’s built for efficient, reliable performance in high-frequency vertical shaft applications. Key Features 16.8hp Rated Power at 3600 rpm 547cc Displacement 34 Nm Max Torque Electronic Fuel Injection (EFI) 1" Vertical Keyway Shaft Electric Start System Engine Oil Capacity: 1.8 L (SAE 10W-30 recommended) Engine Dimensions: 550 × 440 × 445 mm Net Weight: 35 kg Certifications: CE, EC(V) Applications: medium to large ride-on mowers, vertical shaft machinery Specifications Attribute Detail Model CPV550-3EI Product Type Vertical Shaft Engine Displacement 547 cc Rated Power 16.8 hp Rated Torque 34 Nm Cylinder Bore x Stroke 90 × 86 mm Max Output Speed 3600 rpm Idle Speed 1750 ± 150 rpm PTO Shaft Size 1" Vertical Keyway Shaft Starting System Electric Fuel System Electronic Fuel Injection (EFI) Engine Oil Capacity 1.8 L Recommended Oil SAE 10W-30 Specific Fuel Consumption ≤ 345 g/kW·h Engine Dimensions (L×W×H) 550 × 440 × 445 mm Net Weight 35 kg Certifications CE, EC(V) SKU CPV550-3EI
