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Honda 4 Inch Trash Pump for Water Debris Removal
- $1,024.00
- Brands Honda
- Product Code: WT40XK2A
- Availability: In Stock
Honda WT40 4 Inch Trash PumpThe Honda WT40 4 Inch Trash Pump is a heavy-duty, high-volume centrifugal pump designed for demanding construction, drainage, agricultural, and property-maintenance applications. Powered by a Honda GX390 389cc commercial-grade OHV engine, the WT40 can move up to 423 gallons per minute while handling solids up to 1 1/16 inches in diameter.Its cast-iron volute and impelle..
Features of the Honda 4 Inch Trash Pump for Tough Jobs
Honda WT40 4 Inch Trash Pump
The Honda WT40 4 Inch Trash Pump is a heavy-duty, high-volume centrifugal pump designed for demanding construction, drainage, agricultural, and property-maintenance applications. Powered by a Honda GX390 389cc commercial-grade OHV engine, the WT40 can move up to 423 gallons per minute while handling solids up to 1 1/16 inches in diameter.
Its cast-iron volute and impeller are built for durability, while the quick clean-out port makes routine maintenance easier when pumping dirty or debris-filled water. A full protective frame, isolation-mounted engine and pump, and abrasion-resistant silicon-carbide mechanical seals further enhance its suitability for demanding job-site conditions.
Key Features
4-inch suction and discharge ports provide high-volume water movement.
423 GPM maximum discharge capacity makes the WT40 Honda's highest-capacity trash pump.
1 1/16-inch solids-handling capability helps move debris-laden water with reduced clogging.
Honda GX390 commercial-grade engine delivers dependable power for demanding applications.
Cast-iron volute and conical cast-iron impeller are designed for durability and wear resistance.
Replaceable stainless-steel wear plate helps extend pump life and reduce maintenance costs.
Quick clean-out port provides convenient access for removing debris from the pump case.
Silicon-carbide mechanical seals provide abrasion resistance in demanding pumping conditions.
Full-frame protection helps shield the pump and provides convenient tie-down points.
Isolation-mounted engine and pump help reduce vibration and prevent the unit from shifting on soft ground.
Oil Alert® automatically shuts down the engine when low oil is detected.
Self-priming design simplifies operation and reduces setup time.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Honda |
| Model | WT40 |
| Model Number | WT40XK3A |
| Product Type | 4-Inch Trash Pump |
| Pump Type | Trash Centrifugal, Self-Priming |
| Engine | Honda GX390 |
| Engine Displacement | 389cc |
| Bore × Stroke | 3.5 × 2.5 in. |
| Compression Ratio | 8.2:1 |
| Engine Protection | Oil Alert® |
| Drive System | Direct |
| Suction Port Diameter | 4 in. |
| Discharge Port Diameter | 4 in. |
| Maximum Discharge Capacity | 423 gal./min. |
| Total Head Lift | 82 ft. |
| Suction Head Lift | 26 ft. |
| Maximum Pressure | 36 psi |
| Solids Handling | Up to 1 1/16 in. |
| Priming Time | 150 sec. at 16.4 ft. |
| Volute | Rigid-mounted cast iron with stainless-steel wear plate |
| Impeller | Conical cast iron |
| Mechanical Seal | Silicon Carbide / Silicon Carbide |
| Fuel Capacity | 1.6 gal. |
| Runtime at Maximum Discharge | Approx. 1.5 hr. |
| Dimensions (L × W × H) | 28.9 × 21.1 × 22.2 in. |
| Dry Weight | 172 lb. |
| Strainer Part Number | 78325-YG2-003 |
| Residential Warranty | 24 months |
| Commercial Warranty | 12 months |
Specifications are based on Honda's current WT40 product information.
High-Volume Water Removal
The WT40 is designed for situations where large quantities of dirty water need to be moved quickly. Its 4-inch ports and maximum discharge capacity of 423 gallons per minute make it appropriate for high-volume drainage work and construction applications.
Actual flow will depend on factors such as discharge hose length, elevation, hose diameter, fittings, water conditions, and total system head. The published 423 GPM figure represents the pump's rated maximum discharge capacity under specified conditions.
Handles Water With Solids
Unlike a standard clear-water pump, the WT40 is designed specifically for trash water containing suspended debris. Its impeller and pump configuration allow solids up to 1 1/16 inches to pass through the system.
This capability makes the pump useful for applications involving water mixed with leaves, small stones, dirt, and other debris that could cause problems for conventional centrifugal pumps.
The included heavy-duty metal strainer is designed to allow the specified solids to pass while helping protect the pump from larger debris.
Honda GX390 Engine
Power comes from Honda's GX390 389cc OHV commercial-grade engine. The engine provides the mechanical power required to drive the pump directly and is equipped with Honda's Oil Alert system.
Oil Alert helps protect the engine by shutting it down when insufficient oil is detected.
The direct-drive configuration also eliminates the need for a separate belt or chain drive between the engine and pump.
Durable Cast-Iron Pump Construction
The WT40 uses a rigid-mounted cast-iron volute and conical cast-iron impeller. This heavy-duty construction is intended to withstand the abrasive conditions associated with pumping dirty water.
A replaceable stainless-steel wear plate is incorporated into the volute. Because the wear plate can be replaced rather than requiring replacement of the entire pump case when worn, it can help control long-term maintenance costs.
Quick Clean-Out Design
Trash pumps inevitably encounter debris, so easy service access is important. The WT40 includes a quick clean-out port that provides convenient access to the pump case when debris needs to be removed.
Honda also supplies a standard multi-tool for tasks including removing and installing the pump case, servicing the priming and drain plugs, and working with the hose coupling.
Improved Wear Resistance
The WT40 uses silicon-carbide mechanical seals at the pump case and impeller. These abrasion-resistant seals are intended to withstand the demanding conditions associated with trash-water pumping.
The combination of cast-iron pump components, a replaceable wear plate, and silicon-carbide seals makes the WT40 well suited to repeated heavy-duty use.
Vibration-Reducing Mounts
The engine and pump are mounted using isolation mounts designed to reduce vibration during operation. Honda notes that the mounting system helps prevent the pump from "walking" or burying itself when operated on softer ground.
Reduced vibration can also help limit wear on the pump and engine components during extended operation.
Self-Priming Operation
The WT40 uses a self-priming centrifugal pump design, eliminating the need for a separate priming system. Honda specifies a priming time of approximately 150 seconds at a 16.4-foot lift.
Before operation, the pump should be properly primed according to the owner's manual. Never operate the pump dry, as doing so can damage the mechanical seal.
Head and Pressure Capacity
The pump has a published total head lift of 82 feet, a suction head lift of 26 feet, and a maximum pressure of 36 psi.
These figures help determine whether the WT40 is appropriate for a particular drainage system. Actual flow decreases as total system head increases, so users should consider both elevation and friction losses through hoses and fittings when planning an installation.
Typical Applications
The Honda WT40 can be used for high-volume pumping tasks such as:
Construction-site drainage
Excavation dewatering
Flood-water removal
Agricultural drainage
Irrigation-related pumping
Pond and reservoir maintenance
Job-site water removal
Property maintenance
General dirty-water transfer
It is intended for trash-water applications, rather than heavily sludged or extremely high-solids fluids. For water containing a very high percentage of solids or sludge, a diaphragm-style pump may be more appropriate. Honda identifies its WDP30 diaphragm pump for muddy water, sludge, and water with a high percentage of solids.
Installation and Operating Considerations
For dependable operation:
Position the pump on a stable surface.
Use properly sized 4-inch suction and discharge hoses.
Inspect the suction strainer before use.
Prime the pump according to Honda's instructions.
Check engine oil before starting.
Confirm all hose connections are secure and airtight on the suction side.
Start the engine according to the owner's manual.
Monitor flow and engine operation during use.
Shut the unit down before servicing or clearing debris.
Never operate the pump dry.
The suction side is particularly important: air leaks can interfere with priming and substantially reduce pumping performance.
Maintenance
Routine inspection and maintenance help preserve pump performance and service life.
Pay particular attention to:
Pump-case debris
Suction strainer condition
Mechanical seals
Wear plate
Impeller
Hose connections
Engine oil
Air filter
Spark plug
Fuel system
Pump drain and priming plugs
The WT40's quick clean-out design makes it easier to access the pump interior when debris needs to be removed.
Benefits
423 GPM capacity provides high-volume water removal.
4-inch ports accommodate large-diameter hoses for demanding applications.
1 1/16-inch solids handling allows the pump to move debris-containing water.
GX390 commercial-grade engine supplies dependable mechanical power.
Cast-iron construction is designed for heavy-duty service.
Stainless-steel wear plate can be replaced as it wears.
Silicon-carbide seals improve resistance to abrasive conditions.
Quick clean-out port simplifies debris removal.
Full protective frame helps protect the pump during transport and job-site use.
Isolation mounts reduce vibration and help stabilize the unit.
Oil Alert provides automatic low-oil engine protection.
Who Is It For?
The Honda WT40 4 Inch Trash Pump is a strong choice for contractors, construction crews, farmers, property owners, rental operations, and professionals who need to move large volumes of debris-containing water.
With its 423 GPM capacity, 4-inch connections, 1 1/16-inch solids-handling capability, GX390 engine, cast-iron pump components, and service-friendly construction, the WT40 is built for demanding water-removal jobs where durability and high flow are priorities.
For safe and reliable operation, always follow the current Honda owner's manual for setup, priming, fuel, maintenance, operating limits, and service procedures.