Stihl RB 600 vs RB 400 - The Differences
Power Comparison
- With gas-powered engines, both units provide the capability for continuous use, ensuring they're ready to tackle challenging cleaning projects.
- Unlike the standard axial-type pump found in the Stihl RB 400, the Stihl RB 600 features an advanced triplex plunger pump, recognized for its unmatched pressure and durability, offering users superior cleaning power and product longevity. While the Stihl RB 400's pump is driven by a 196cc engine, the Stihl RB 600 utilizes a 208cc engine. Both devices feature a standard pull-start mechanism for starting.
The following charts are provided to show you at a glance how the main specs of the Stihl RB 400 compare to the Stihl RB 600.
- With a maximum pressure of 3200 PSI, the Stihl RB 600 exerts a much higher force to effectively blast away dirt and grime, outshining the 2700 PSI of the Stihl RB 400.
- The RB 600 delivers a noticeably higher water flow at low pressure compared to the RB 400. Offering up to 3 GPM (gallons per minute) compared to the RB 400's maximum flow of 2.7 GPM, it should provide quite greater effectiveness when rinsing dirt and debris away.
- The RB 600's overall cleaning efficiency is substantially greater with its 9600 C.U. than that of the Stihl RB 400, which has 7290 C.U.
Design Comparison
- Both units adopt a hand truck design. As a result, differences in mobility between the devices may be linked to factors such as their respective wheels and weight, which will be elaborated upon below.
- At 90 lbs, the RB 400 shines as notably lighter than the 118 lbs of the RB 600, affording users improved mobility and reduced strain during operation.
- With the addition of wheels, both products enjoy improved maneuverability. Featuring a folding handle, both products aim to improve your grip, providing enhanced comfort and control during maneuvering or transportation.
Feature Comparison
- Both washers support the addition of chemical detergent solutions to the water, improving their cleaning potential. In both cases, this is done via a siphon hose.
- Both units are equipped with a fairly standard ergonomic trigger gun and a classic wand.
- Out of the box, the RB 600 and the RB 400 each provide a bundle of 5 nozzles for your convenience. Both products offer the exact same selection of nozzles: 0°, 15°, 25°, 40°, and a soap nozzle.
- Out of the box, users of the Stihl RB 600 can enjoy the convenience of its 40 ft high-pressure hose, which enables them to position themselves farther from the unit compared to the Stihl RB 400 and its 25 ft high-pressure hose.
- The RB 400 and RB 600 are designed with onboard storage solutions, making it easy to store and access your nozzles and accessories while working. Both washers feature a set of hooks to help you neatly store their high pressure hoses when not in use.
TL;DR
| Stihl RB 400 | Stihl RB 600 |
|---|---|
![]() | ![]() |
|
|



