Generac PRO 2″ Semi-Trash Pump & Repair Parts
The Generac PRO 2 inch semi-trash pump and repair parts are available here at Ken’s Distributing Company, giving you a single source for the complete pump, every replacement component, and the expert support you need to keep this machine running at full performance. Whether you are purchasing a new Generac PRO 2″ semi-trash pump or sourcing specific repair parts after hard field use, this page covers everything you need.
Contact the Kendisco team at 303-699-7845 for pricing, parts availability, or to send a quote request. Always use your unit serial number when ordering repair parts to ensure you receive the correct components for your specific pump build.
Generac PRO 2 Inch Semi-Trash Pump: Product Overview
The Generac PRO 2 inch semi-trash pump is a wet-prime centrifugal pump engineered for high-volume fluid transfer on construction sites, dewatering projects, agricultural operations, and industrial job sites. Unlike standard clean water pumps, the semi-trash design allows the pump to pass soft solids and light debris without clogging, making it a practical choice for muddy water, sandy conditions, and water containing suspended material.
Powered by a 169cc Generac G-Force engine, this 2″ semi-trash pump delivers up to 158 gallons per minute with reliable wet-prime startup and a feature set designed for ease of use in demanding field conditions. The silicon carbide mechanical seal provides long service life even under continuous operation, and the large 3-gallon fuel tank delivers approximately 5 hours of runtime per fill.
Generac PRO 2 Inch Semi-Trash Pump: Key Features
- Generac G-Force 169cc Engine: Powerful and fuel-efficient engine with low-oil shutdown protection to prevent engine damage during unattended operation
- Up to 158 GPM Flow Rate: High-volume output suited to construction dewatering, flood water removal, and large-scale site water management
- Easy Prime System: Custom funnel design with tethered priming cap allows fast, tool-free priming for quick startup in the field
- Silicon Carbide Mechanical Seal: Long-life seal material resists wear and heat, extending service intervals compared to standard seal materials
- 3-Gallon Fuel Tank with Gauge: Large capacity tank with integrated fuel gauge eliminates guesswork and reduces refueling interruptions during long pumping operations
- Color-Coded Ports: Blue discharge and green suction port identification prevents connection errors in the field
- 1 Inch Heavy-Duty Frame: Robust frame construction withstands the vibration and impact of active construction and industrial job sites
- Onboard Operator Instructions: Icon-based instructions at key touch points make the pump straightforward to operate without consulting the manual
- Semi-Trash Capability: Passes soft solids and light debris without clogging, making it suitable for muddy water, sandy conditions, and general site water that standard clean water pumps cannot handle
Generac PRO 2 Inch Semi-Trash Pump: Key Specifications
| Specification | Detail |
| Pump Type | Wet-prime centrifugal semi-trash pump |
| Port Size | 2 inch suction and discharge |
| Maximum Flow Rate | Up to 158 gallons per minute (GPM) |
| Engine | Generac G-Force 169cc |
| Engine Protection | Low-oil shutdown |
| Fuel Tank Capacity | 3 gallons (11.5L) with integrated fuel gauge |
| Approximate Runtime | Approximately 5 hours per tank |
| Mechanical Seal | Silicon carbide for extended service life |
| Frame Construction | 1 inch durable frame built for harsh job site environments |
| Priming System | Easy Prime custom funnel design with tethered priming cap |
| Port Color Coding | Blue = Discharge, Green = Suction |
| Model Number | ST20-S (Model 006919-0) |
| Suction Hose Included | 2 inch x 12 feet |
| Discharge Hose Included | 2 inch x 25 feet |
Industries and Applications for the Generac PRO 2 Inch Semi-Trash Pump
The Generac PRO 2 inch semi-trash pump is a versatile field pump used across a wide range of industries where high-volume water removal and the ability to handle debris-laden fluids are required.
- Construction and Dewatering: Removes groundwater, rainwater, and muddy water from active excavations, foundations, and trenches during construction projects
- Flood Response and Cleanup: High flow rate of up to 158 GPM makes rapid water removal practical for flood cleanup and emergency dewatering operations
- Agriculture and Irrigation: Transfers water from ponds, ditches, and open sources containing suspended sediment or light debris that would clog a standard clean water pump
- Mining and Site Work: Manages drainage and groundwater removal on active mine sites and heavy civil construction projects
- Municipal and Utility Maintenance: Supports bypass pumping, storm drain management, and emergency water removal in municipal utility operations
- Industrial Facility Maintenance: Removes process water, wash-down water, and floor drainage in manufacturing and industrial facilities
Generac PRO 2 Inch Semi-Trash Pump Parts Breakdown
| Item | Part No | Description | QTY |
|---|---|---|---|
| 1 | 0L63360110 | FRAME 2″ SEMI-TRASH PUMP | 1 |
| 2 | 0L4797 | SP17 Engine for 2″ Semi-Trash Pump | 1 |
| 3 | 0K95700114 | Pump Base Assembly (2″ Trash Pump) | 1 |
| 4 | 0K95700117 | Pump Body Shock Absorber | 1 |
| 5 | 0K95700115 | Shock Absorber B | 2 |
| 6 | 0K95700116 | Shock Absorber A | 2 |
| 7 | 0L63350112 | Vibration Mount | 4 |
| 8 | 0L63370146 | Spacer | 1 |
| 9 | 0K33910123 | Flange Bolt (M6X20) | 1 |
| 10 | 0L63370147 | Air Duct Bracket | 1 |
| 11 | 0H33750126 | Bolt (M6X12) | 1 |
| 12 | 0L63360111 | Muffler | 1 |
| 13 | 0L63360112 | Muffler Gasket | 1 |
| 14 | 0J00100243 | Nut (M0) | 10 |
| 15 | 0H33750248 | Bolt (M8X40) | 2 |
| 16 | 0K96270114 | Bolt (M8X12) | 1 |
| 17 | 0L63360113 | 2″ Semi-Trash Pump Assembly | 1 |
| 18 | 0K95700139 | 2″ Blue Band | 1 |
| 19 | 0K95700141 | Generac Plug O-Ring | 1 |
| 20 | 0K9080 | 2″ Easy Prime Cap | 1 |
| 21 | 0K95700143 | Fuel Tank (11.5L) | 1 |
| 22 | 0H3384 | Fuel Shutoff Valve | 1 |
| 23 | 0J08180222 | Clamp | 1 |
| 24 | 0J6626 | Fuel Hose 4.5X8.5MM (EPA/CARB) | 0.17 |
| 25 | 0H33750173 | Clamp | 3 |
| 26 | 0K95700149 | Fuel Tank Shock Absorber | 5 |
| 27 | 0K33910126 | Flange Bolt/Washer (M8X25) | 4 |
| 28 | 0K95700144 | Roll Over Valve | 1 |
| 29 | 0K95700145 | Fuel Filter (in Tank) | 1 |
| 30 | 0K95700147 | Screw (M5X14) | 2 |
| 31 | 0K95700151 | Fuel Gauge | 1 |
| 32 | 0K95700152 | Fuel Cap | 1 |
| 33 | 0K95700148 | Fuel Hose 4.5MM | 0.81 |
2″ Semi-Trash Pump Assembly Parts
| Item | Part No | Description | QTY |
|---|---|---|---|
| 1 | 0L63360118 | Pump Cover | 1 |
| 2 | 0K95700119 | Pump Cover O-ring | 1 |
| 3 | 0L63360119 | MECHANICAL SEAL(DYNAMIC) | 1 |
| 4 | 0K95700121 | MECHANICAL SEAL(DYNAMIC) | 1 |
| 5 | 0J08180229 | FLAT WASHER | 15 |
| 6 | 0K95700122 | RUBBER WASHER | 4 |
| 7 | 0L63360114 | INNER HEX BOLT (5/16″- 24UNF X60) | 4 |
| 8 | 0L63360115 | 2″ IMPELLER (QT200) | 1 |
| 9 | 0L63360116 | 2″ VOLUTE | 1 |
| 10 | 0J08180237 | FLAT WASHER | 2 |
| 11 | 0J08180238 | SPRING WASHER | 2 |
| 12 | 0L63360117 | HEXAGON SOCKET CAP (M5X15) | 2 |
| 13 | 0K95700126 | 2″ VOLUTE O-RING | 1 |
| 14 | 0K95700127 | PUMP HOUSING | 1 |
| 15 | 0J08180230 | SPRING WASHER | 11 |
| 16 | 0K95700128 | BOLT (M8X30) | 4 |
| 17 | 0K95700129 | PLUG O-RING | 2 |
| 18 | 0K95700130 | PLUG | 2 |
| 19 | 0K96270126 | BOLT (M8X25) | 7 |
| 20 | 0K95700131 | FLAP VALVE | 1 |
| 21 | 0K95700156 | 2″ INTAKE VALVE SEAT | 1 |
| 22 | 0K95700140 | 2″ EASY PRIME DISCHARG FUNNEL GASKET | 1 |
| 23 | 0K9079 | 2″ EASY PRIME DISCHARGE FUNNEL | 1 |
Hoses and Hardware
| Item | Part No | Description | QTY |
|---|---|---|---|
| 1 | 0K95700132 | O-RING | 2 |
| 2 | 0K95700119 | HOSE BARB | 2 |
| 3 | 0K95700134 | JOINT GRIP | 2 |
| 4 | 0K95700154 | CLAMP | 3 |
| 5 | 0K95700137 | FILTER NET | 1 |
| 6 | 0K95700138 | DISCHARGE HOSE (2 INCH X 25 FEET) | 1 |
| 7 | 0K95700136 | SUCTION HOSE (2 INCH X 12 FEET) | 1 |
Maintenance Guidance for the Generac PRO 2 Inch Semi-Trash Pump
Keeping the Generac PRO 2 inch semi-trash pump in reliable working condition requires consistent attention to both the engine and the pump assembly. The following maintenance schedule applies to normal operating conditions. In heavy or continuous use, inspect more frequently.
- Before each use: Check engine oil level, inspect suction and discharge hoses for damage, clean the filter net, and confirm Easy Prime funnel cap is secure
- Every 25 hours: Change engine oil. Check all fasteners and vibration mounts for tightness
- Every 50 hours: Inspect the mechanical seal area for leakage. Check the flap valve and intake valve seat for wear or damage
- Every 100 hours: Inspect the impeller and volute for wear or erosion, particularly if the pump has been used in sandy or abrasive water conditions
- Annually or as needed: Replace the fuel filter, inspect all O-rings and gaskets, and service the Easy Prime funnel gasket
- After extended storage: Drain the fuel system using the fuel shutoff valve (0H3384) before storage and inspect all seals before returning the pump to service
Frequently Asked Questions
What is the maximum flow rate of the Generac PRO 2 inch semi-trash pump?
The Generac PRO 2 inch semi-trash pump delivers up to 158 gallons per minute under optimal conditions. Actual flow rate will vary depending on head height, hose length, fluid type, and the presence of solids or debris in the water being pumped.
How does the Easy Prime system work on the Generac PRO 2″ semi-trash pump?
The Easy Prime system uses a custom-designed discharge funnel (part 0K9079) with a tethered priming cap to allow quick and simple priming without tools. To prime the pump, remove the tethered cap, fill the funnel with water, replace the cap, and start the engine. The funnel gasket (0K95700140) maintains the seal during priming and should be replaced if air leakage is detected.
What type of mechanical seal does the Generac PRO 2 inch semi-trash pump use?
The Generac PRO 2 inch semi-trash pump uses a silicon carbide mechanical seal, which provides significantly longer service life than standard seals in water pump applications. Silicon carbide resists wear, heat, and the abrasive particles commonly found in construction site water and muddy dewatering conditions. Two mechanical seal components are used in this pump: part 0L63360119 and part 0K95700121.
How long will the Generac PRO 2 inch semi-trash pump run on a full tank of fuel?
The 3-gallon (11.5L) fuel tank provides approximately 5 hours of runtime under normal operating conditions. Actual runtime will vary based on load, throttle setting, and engine condition. The integrated fuel gauge on the tank allows you to monitor fuel level at a glance without stopping the pump.
Where can I order Generac PRO 2 inch semi-trash pump repair parts?
Ken’s Distributing Company stocks genuine Generac PRO 2 inch semi-trash pump repair parts and can assist with part identification using your unit serial number. Contact the Kendisco team at 303-699-7845 or submit a quote request online. Always provide your serial number when ordering to ensure you receive components that match your specific pump build and production date.