When tough cleaning jobs demand reliable gas-powered performance, the STIHL RB 400 Dirt Boss® Residential Pressure Washer delivers the pressure and durability needed for everyday use. Powered by a Kohler 6.5 HP 196 cc engine, it produces 2,700 PSI at 2.7 GPM for tackling demanding residential cleaning tasks.

Built with durable pump and engine components, the RB 400 Dirt Boss® features a brass manifold pump, stainless steel valves, ceramic-coated pistons, and a cast-iron engine liner. An easy-start pump system, low-oil shutdown feature, detergent injector, and 25-foot no-kink hose add convenience and versatility to the cleaning experience.

Key Features

Powerful Kohler Engine

• Powered by a Kohler 6.5 HP, 196 cc engine.
• Delivers 2,700 PSI of water pressure.
• Provides 2.7 GPM water flow for demanding residential cleaning.
• Designed for dependable performance during regular use.
• Cast-iron engine liner provides added durability.
• Built-in shutdown feature helps protect the engine when oil levels are low.

Durable Brass Manifold Pump

• Features a durable brass manifold pump.
• Stainless steel valves provide reliable pump operation.
• Ceramic-coated pistons are designed for durability.
• Built for handling demanding cleaning tasks on a regular basis.

Easy-Start Pump System

• Easy-start pump system simplifies pressure washer startup.
• Designed to make routine cleaning more convenient.

Detergent Injector System

• Integrated detergent injector system allows cleaning solution to be introduced during operation.
• Helps improve cleaning efficiency when tackling dirt and grime that benefit from detergent.

25-Foot No-Kink Flex Hose

• Includes a 25-foot no-kink flex hose.
• Flexible design makes the hose easier to handle.
• Extended length provides greater cleaning reach without requiring frequent repositioning of the machine.

Five Spray Nozzles

• Includes five spray nozzles for different cleaning applications.
• Allows users to adjust the spray pattern according to the task.
• Provides added versatility for everyday outdoor cleaning.

Specifications

Cleaning Performance

With 2,700 PSI and 2.7 GPM, the RB 400 Dirt Boss® is designed to handle a wide range of demanding residential cleaning tasks. Its combination of water pressure and flow provides the cleaning power needed for routine outdoor maintenance and tougher buildup.

Accessory Compatibility

The RB 400 Dirt Boss® is compatible with a variety of optional cleaning accessories, allowing the system to be adapted for different cleaning applications. Available accessories include:

• Rotary surface cleaner
• Water broom
• Additional nozzle options
• Hose extensions
• Gutter cleaner
• Aluminum wand extension
• Pivot coupler
• Official STIHL cleaning agents

Accessory availability and compatibility may vary.

Durability & Daily Use

The Dirt Boss® is designed for regular cleaning with durable components throughout the engine and pump system. Its brass manifold, stainless steel valves, ceramic-coated pistons, cast-iron engine liner, and low-oil shutdown feature provide added durability and engine protection for routine use.

Why Choose the STIHL RB 400 Dirt Boss®?

• 2,700 PSI cleaning power
• 2.7 GPM water flow
• Kohler 6.5 HP, 196 cc engine
• Brass manifold pump
• Stainless steel valves
• Ceramic-coated pistons
• Cast-iron engine liner
• Low-oil shutdown feature
• Easy-start pump system
• Built-in detergent injector
• 25-ft. no-kink flex hose
• Five spray nozzles
• Compatible with a wide range of optional accessories
• Designed for demanding daily residential cleaning