The Kärcher HD 9/23 G is a petrol-powered cold water high-pressure cleaner designed for professional use where independent, mobile cleaning is essential. Built for demanding environments, it combines strong pressure output, off-grid operation, and a robust frame for reliable performance on construction sites, farms, industrial premises, and outdoor service areas.

Powerful Cleaning Performance

With a working pressure of up to 230 bar and a flow rate of 400 to 930 litres per hour, the HD 9/23 G is made to tackle stubborn dirt, mud, grease, and heavy contamination on machinery, vehicles, tools, and outdoor surfaces. Its maximum pressure reaches 270 bar, giving it the extra force needed for tougher cleaning jobs.

Independent Off-Grid Operation

Powered by a Honda GX 390 petrol engine, this machine works without an external power supply, making it ideal for remote and infrastructure-limited locations. It can also draw water from lakes or ponds in emergency situations, which adds flexibility for outdoor and off-grid cleaning tasks.

Built for Tough Professional Use

The HD 9/23 G features a very robust basic frame designed for daily work in harsh conditions. A large water filter protects the pump, while a thermostat valve helps prevent overheating in recirculation mode, supporting dependable long-term use.

Mobile and Easy to Use

Its ergonomic frame concept improves transport over uneven ground, while puncture-proof wheels help maintain mobility on site. The machine includes the EASY!Force Advanced spray gun, EASY!Lock quick-release fasteners, Servo Control, on-board accessory storage, and a 15 m premium high-pressure hose to make operation quicker and more comfortable.

Key Features

• Genuine Kärcher part: 1.187-906.0.
• 230 bar working pressure.
• Max pressure: 270 bar.
• Flow rate: 400 to 930 l/h.
• Honda GX 390 petrol engine.
• Independent operation without external power supply.
• Can draw water from lakes or ponds.
• EASY!Force Advanced spray gun included.
• 15 m premium high-pressure hose included.
• High-pressure hose specification: DN 8, 315 bar.
• Servo Control fitted.
• Infinitely variable pressure and water flow regulation.
• Detergent function: suction.
• Puncture-proof wheels for high mobility.
• Large water filter and thermostat valve for pump protection.
• Max inlet temperature: 60°C.
• Water inlet: 1 inch.
• Weight with accessories: 75.5 kg.
• Dimensions: 866 x 722 x 1146 mm.

Ideal For

• Construction industry, including facade cleaning and cleaning construction vehicles and equipment.
• Agriculture, including vehicle and equipment cleaning, as well as forestry use.
• Industrial equipment cleaning.
• Service providers cleaning outside areas such as squares and car parks.
• Remote and poor-infrastructure cleaning environments.