Portable Pressure Washer Familiarization and Troubleshooting Guide
Section 5 • Small Frame Gas Pump
This section describes the small frame pump assemblies powered by gasoline engines intended for use in light duty
applications. This small frame gas pump may also be referred to as 'GPW-EG' or 'EG' or 'Economy Gas' pumps. Most of the
information previously printed in publication A4453 will be found here.
The small frame gas pump has the following features:
• 1500 to 1800 PSI water pressure
• 2.0 Gallons per minute flow
• Axial Cam Design
• Stainless Steel Pistons
• Fixed Pressure Unloader
• Chemical Injection System available
• Thermal Relief Valve available
• Oil Bath Drive System
• Vertical or Horizontal Engine Mount
Part 1 - Specifications and Views
This section presents the torque and performance specifications for
gas pumps. Also presented are sectional and exploded views of this type of pump assembly.
Performance Specifications
Pump
Rated
Assembly
Pressure+
Part No.‡
B1906A
1500
20965
1650
20965A
1650
B1262
1750
B1262A
1750
+ Pressure (in pounds per square inch) is adjustable up to the unit's rated pressure.
* Flow rate is given in gallons per minute.
‡ 'A' suffix denotes pumps with thermal relief valve.
Pump assemblies are listed by part number and were current at time of publication. Other pump assemblies will become
available as our products evolve.
SMALL FRAME GAS PUMP
Engine
Pump Head
Shaft
Straight
Aluminum
Straight
Aluminum
Straight
Aluminum
Straight
Aluminum
Straight
Aluminum
35
Generac Portable Products®
Flow Rate*
2.0
Stainless Steel 80W90/120ml
2.0
Stainless Steel 80W90/120ml
2.0
Stainless Steel 80W90/120ml
2.0
Stainless Steel 80W90/120ml
2.0
Stainless Steel 80W90/120ml
small frame
Piston
Oil Type/
Material
Capacity