Portable Pressure Washer Familiarization and Troubleshooting Guide Section 5 • Small Frame Gas Pump
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 Generac Portable Products® small frame gas pumps. Also presented are sectional and exploded views of this type of pump assembly. Performance Specifications Pump Assembly Part No.‡
Rated Pressure+
Engine Shaft
Pump Head
Flow Rate*
Piston Material
Oil Type/ Capacity
B1906A 20965 20965A B1262 B1262A
1500 1650 1650 1750 1750
Straight Straight Straight Straight Straight
Aluminum Aluminum Aluminum Aluminum Aluminum
2.0 2.0 2.0 2.0 2.0
Stainless Steel Stainless Steel Stainless Steel Stainless Steel Stainless Steel
80W90/120ml 80W90/120ml 80W90/120ml 80W90/120ml 80W90/120ml
+ 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.
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