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Honda Power Equipment WT40


Honda Power Equipment



Key Features
  • Heavy-duty 4" construction trash pump
  • Easy starting Honda OHV commercial engine
  • 423 gal./min capacity
  • Solid handling capability up to 1 1/16"
  • Cast iron volute and impeller
  • Quick clean out port
  • Heavy-duty 4" construction trash pump: Specially designed for job sites and applications where high volume trash water capacity is needed.
  • Easy starting Honda OHV commercial engine: The durable Honda GX series commercial grade engine is easy starting and provides ample power for the toughest conditions.
  • 423 gal./min capacity: The WT40 moves the most water out of any Honda pump.
  • Solid handling capability up to 1 1/16": The specially designed impeller allows solids to pass through easily, without clogging.
  • Heavy duty full frame protection: Protects the pump, while offering a convenient tie down location for transport.
  • Easy quick clean out port: The WT40 is designed for quick and easy service. An easy access service port makes clean-out quick.
  • Replaceable stainless steel wear plate: The volute is equipped with a replaceable stainless steel wear plate, which increases durability and reduces maintenance costs
  • Standard service tool: A convenient multi-tool is provided for easy removal and installation of the pump case, for tightening and removal of the priming plug and drain plug, and for tightening and removal of the hose coupling.
  • Durable silicon carbide mechanical seal: Features abrasion-resistant silicone-carbide seals for extended wear.
  • Cast iron volute and impeller: The rigid-mount cast iron volute reduces case wear, increasing the life of the pump.
  • Isolation mounted engine and pump: High performance mounts minimize vibration, keeping the pump from “walking” away or “burying” itself in soft soil conditions. The reduced vibration also reduces wear on components, increasing the pump's durability.
  • Unique conical shaped impeller: The unique shape improves priming and higher discharge capacity. Wide vanes are designed to resist wear and maximize durability.
  • 3 year residential/commercial warranty: You can rest easy, knowing your pump is covered from top to bottom for 3 full years.
  • Protected by Honda Oil Alert®: Protects the pump by shutting the engine off when low oil is detected.
  • Large heavy duty metal strainer: The strainer allows up to 1 1/16 in. solids to pass through, as well as a large volume of water, helping to prevent clogging. Made of steel to withstand tough conditions.
  • Engine: GX390
  • Displacement: 389 cc
  • Bore and stroke: 3.5 in. x 2.5 in.
  • Compression Ratio: 8.2:1
  • Oil Alert: Std
  • Pump type: Trash Centrifugal Self-priming
  • Volute: Rigid Mounted Cast Iron w/ Stainless Wear Plate
  • Impeller: Conical Cast Iron
  • Mechanical Seal (Pump case / impeller): Silicon Carbide/Silicon Carbide
  • Priming time: 150 sec. @16.4 ft.
  • Drive system: Direct
  • Discharge capacity: 423 gal./min
  • Suction port diameter: 4 in.
  • Discharge port diameter: 4 in.
  • Total head lift: 82 ft.
  • Suction head lift: 26 ft.
  • Maximum pressure: 36 psi
  • Solids handling: 1 1/16 in.
  • Dimensions (LxWxH): 28.9 in. x 21.1 in. x 22.2 in.
  • Dry weight: 172 lb.
  • Fuel Capacity: 1.6 gal.
  • Run Time @ Max Discharge: 1.5 hr
  • Strainer Part #: 78325-YG2-003
  • Residential Warranty: 3 years
  • Commercial Warranty: 3 years
  • A wide variety of hose kits, couplers, adaptors, and other accessories are available.



Engine Type
Engine Manufacturer
Engine Displacement
389 cc
Bore and Stroke
3.5 in. x 2.5 in.


Pump Style
Trash Centrifugal Self-priming
Conical Cast Iron
Drive System
Discharge Capacity
423 gal./min
Discharge Port Diameter
4 in.
Suction Diameter
4 in.
Head Lift
82 ft.
Suction Head Lift
26 ft.
Max Pressure
36 psi
28.9 in. x 21.1 in. x 22.2 in.
172 lb.


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