King Tech 18HP Vertical Shaft Petrol Engine 550cc 4-Stroke OHV Electric Start

The King Tech 18HP Vertical Shaft Petrol Engine is a 550cc 4-stroke OHV motor built for ride-on mowers and garden tractors. With electric start, a cast-iron cylinder bore and a vertical 25.4 mm keyway shaft, it delivers dependable power for mower decks and PTO-driven equipment.

Key Features

• 18 HP output for strong, steady performance on ride-on mowers
• 550 cc 4-stroke OHV engine for efficient combustion and low fuel use
• Vertical shaft design suited to mower decks and garden tractors
• Electric start with electronic ignition for quick, reliable starting
• Cast-iron cylinder bore for durability and long engine life
• 25.4 mm (1”) output shaft with keyway for secure PTO connection
• 8.7:1 compression ratio for balanced power and smooth operation
• Centrifugal mechanical governor maintains consistent engine speed under load
• Transistorized magneto ignition for steady spark performance
• Universal bolt pattern fits many Briggs and Stratton or Honda setups
• Balanced design helps reduce vibration

Specifications

Installation Bolt Details

• Mounting interface includes 3 through holes of Ø 8.8 mm and 1 blind hole of Ø 8.8 mm for secure attachment
• Bolts for the solenoid valve are not required for installation