The pressure washer will have a four stroke engine. The recommended gasoline will be an octane rating of 87 (R+M)/2 or higher.
Stihl Dirt Boss Gas-Powered Cold Water Pressure Washer, 2700 PSI, 2.7 GPM, Kohler Engine, Model# RB 400

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Not availableIn Store Only:
- Powerful 6.5HP, 196cc engine can output up to 2700 PSI of water pressure at 2.7 GPM
- Easy Start Pump System features a pressure relief valve, allowing users to start the unit without any back pressure from the pump
- Quick, easy starting with no hard cord pulls
- Brass manifold pump design, stainless steel valves and ceramic- coated pistons for exceptional, long-lasting performance
- Comes standard with a detergent injector system, so you can easily add detergents to the washer for efficient cleaning
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
This item may be purchased at select Northern Tool stores. Not available for online order at NorthernTool.com.
What's Included
- (1) Pressure washer (1) 25ft. flex hose
Features + Benefits
- Powerful 6.5HP, 196cc engine can output up to 2700 PSI of water pressure at 2.7 GPM
- Easy Start Pump System features a pressure relief valve, allowing users to start the unit without any back pressure from the pump
- Quick, easy starting with no hard cord pulls
- Brass manifold pump design, stainless steel valves and ceramic- coated pistons for exceptional, long-lasting performance
- Comes standard with a detergent injector system, so you can easily add detergents to the washer for efficient cleaning
- 4-point vibration isolation system reduces pump vibration during use for increased unit longevity
- 2-piece lance and gun assembly features reverse trigger pull for easy operation and extended length for better accuracy in tall applications
- Low oil shutdown is built in for engine protection
- On/off and fuel valve control allows the user to shut unit off and close fuel valve automatically for easy, no-mess transport
- 1 1/4in. dia. powder-coated steel tube frame with fold-down handle
- 25ft. no-kink flex hose allows you to reach more area without having to move the machine
- Easy-access inlet and outlet water connections
- Includes premium corrosion- and wear-resistant stainless steel nozzles for use with high-pressure water and a brass nozzle for use with detergent
Key Specs
| Attribute | Specification |
|---|---|
item# | 638631 |
Brand | Stihl |
Manufacturer's Warranty | 24 months parts/24months labor |
Ship Weight | 90.0 LB |
Pressure | 2,700 PSI |
Flow | 2.7 GPM |
Engine Brand | Kohler |
Engine Model | 400 |
Engine Displacement | 196 cc |
Fuel Type | Gasoline |
Pump | Brass manifold |
Drive Style | Direct |
CARB Compliant | No |
Number of Tips Included | 4 |
| Attribute | Specification |
|---|---|
Adjustable Pressure | Yes |
Start Type | Pull |
Engine Oil Included | Yes |
Engine Oil Type | 10w 30 |
Fuel Capacity | 1 Gal |
Chemical Injector | Yes |
Hose Length | 25 ft |
Nozzle Type | Brass |
Quick Connect Nozzle | Yes |
Pump Oil Included | Yes |
Low Oil Shutdown | Yes |
Thermal Protector | Yes |
Product Weight | 90 lb |
Reviews
Questions & Answers
Questions
-
· 5 years ago
What gas does it take can’t find our manual
1 answer-
ProductExpert11· 5 years ago
Helpful?
-
-
· 6 years ago
Is this suitable for paint stripping?
I see mixed information about power washer psi and gpm that is required for paint stripping, so I really do not know what the truth is in this matter.
1 answer-
ProductExpert11· 6 years ago
A pressure washer from 2,500 to 4,000 PSI is most effective for removing paint from a surface.
Helpful?
-
Accessories We Recommend
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Warranty
Manufacturer's Warranty
24 months parts/24months labor
Compare with Most Popular in Gas-Cold Water Pressure Washers
See All Gas-Cold Water Pressure Washers
See All Stihl Gas-Cold Water Pressure Washers
Currently Viewing This Product
Item # 638631
$909.99Shipping:
Not availableIn Store Only:
Item # 157136
$2349.99Shipping:
Free shipping (lower 48 states) - Available nowHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
Item # 638641
$1399.99Shipping:
Not availableIn Store Only:
Item # 1574404
$499.99Shipping:
Not availableIn Store Only:
Specifications
2,700 PSI
4,000 PSI
3,200 PSI
3,300 PSI
2.7 GPM
3.5 GPM
3 GPM
2.6 GPM
Kohler
Honda
Kohler
Kohler
400
GX390
600
SH265
196 cc
389 cc
208 cc
196 cc
Gasoline
Gasoline
Gasoline
Gasoline
Brass manifold
CAT 5cp
Triple
Direct Drive Axial Cam
Direct
Belt
Direct
Direct
No
-
-
-
4
4
4
4
Yes
Yes
Yes
No
Pull
Recoil
Pull
Recoil
Yes
No
Yes
No
10w 30
SAE 30
10w 30
10w-30
1 Gal
1.6 Gal
1.2 Gal
0.95 Gal
Yes
Yes
Yes
Yes
25 ft
50 ft
40 ft
25 ft
Brass
Quick-connect
Brass
Quick Connect
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
90 lb
210.0000 lb
118.0000 lb
80.0000 lb
-
19 ft-lbs.
-
10.2 ft-lbs.
-
140 °F
-
140 °F
-
3.5
-
3
-
3/8 in
-
-
-
50.5 x 28.5 x 26.25 in
32.75 x 29.0 x 28.0 in
29.25 x 19.75 x 20.75 in
-
-
-
140 °F
-
-
-
10 in










