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

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- 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
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Description
Key Specs
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Q & A
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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
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· 5 years ago
What gas does it take can’t find our manual
1 answer-
ProductExpert11· 5 years ago
Helpful?
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· 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?
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Warranty
Manufacturer's Warranty
24 months parts/24months labor
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Item # 638631
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- $899.99
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Specifications
2,700 PSI
3,600 PSI
5,000 PSI
3,100 PSI
2.7 GPM
2.5 GPM
5 GPM
2.5 GPM
Kohler
CRX
Honda
Kohler
400
CRX210
GX630
Command Pro CH255
196 cc
208 cc
688 cc
177 cc
Gasoline
Gasoline
Gasoline
Gasoline
Brass manifold
AAA C3X
General
Comet DWD
Direct
Direct
Belt
Direct
No
No
No
-
4
5
4
4
Yes
Yes
No
Yes
Pull
Recoil
Electric
Recoil
Yes
Yes
Yes
No
10w 30
10W-30
Mi-T-M Pump Oil #AW-4085-0016
SAE 30
1 Gal
0.8 Gal
13 Gal
0.78 Gal
Yes
Yes
No
Yes
25 ft
25 ft
50 ft
50 ft
Brass
QC
Quick-Connect
Quick-connect
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
90 lb
135.0000 lb
500.0000 lb
95.0000 lb
-
31.0 x 27.0 x 29.0 in
43.0 x 28.0 x 39.0 in
40.25 x 26.0 x 23.75 in
-
-
35.6 ft-lbs.
8.3 ft-lbs.
-
-
4.5
3
-
-
3/8 in
3/8 in
-
-
13 in
10 in
-
-
Mi-T-M Pump Oil #AW-4085-0016
-
-
-
-
140 °F










