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Product Overview
Powered by a ZONSEN GB420 electric-start engine, the MechMaxx HPW40HT Hot Water Pressure Washer delivers dependable power and strong hot water cleaning performance for demanding washdown jobs. With 3,500–4,000 PSI pressure, 4.0 GPM flow, and water temperature up to 200°F, it helps remove grease, oil, mud, grime, and heavy buildup more effectively than cold water alone.
The unit is equipped with a triplex plunger pump, diesel-fired heating system, integrated control panel, and 175-gallon onboard water tank. This setup allows the washer to operate in locations where a direct water supply may not be available, making it suitable for farm, construction, industrial, fleet, and equipment maintenance applications.
Designed as a skid-mounted model, this pressure washer is built for truck beds, trailers, and utility platforms. Its rugged frame, onboard water tank, lift hook, and forklift slots support mobile cleaning jobs, easier loading, and convenient transport between worksites.
NOTE!
- This machine DOES NOT COME WITH OIL AND GASOLINE in the engine. Before starting, fill the engine with both oil and gasoline. Refer to the engine manual for details.
- Maximum pump pressure is 4000 PSI, with the factory working pressure preset to about 3500 PSI.
- Please read the PRODUCT MANUAL carefully and review all SAFETY WARNING LABELS on the machine before operation.
The HPW40DT mounts a hot-water rig and its own water on a compact truck skid. A 13.4 HP ZONSEN GB420 electric-start engine drives a triplex plunger pump for 3500-4000 PSI at 4.0 GPM, and the 350,700 BTU diesel burner heats water to 200°F to cut grease, tar, and baked-on grime. It comes skid-mounted with a 175-gallon water tank, hose reel, and LED work lights so you can work away from a water source.
- 3500-4000 PSI at 4.0 GPM
- 13.4 HP ZONSEN GB420 electric-start engine, battery included
- Hot water to 200°F via 350,700 BTU diesel burner
- Triplex plunger pump with oil-bath crankcase
- Truck skid mount with 175-gallon water tank
- Hose reel, LED work lights, 3/8" x 50' hose and full nozzle set included
Specifications
| Engine | ZONSEN GB420 | Max Temperature | 200℉ (93℃) |
| Engine Type | Single Cylinder, 4 Stroke, Air-Cooled, OHV | Igniter | 12V |
| Displacement | 420 cc; 13.4 HP | Burner Fuel | 5 US gal (19L) Diesel |
| Start Type | Electric Start (battery included) | Drive | Direct |
| Engine Fuel | 1.6 US gal Clean, fresh, unleaded gasoline | Pump Type | Triplex Plunger Pump / Oil Bath Crankcase |
| Engine Oil | 0.3 US gal SAE 10W-30 | Pump Oil | SAE 10W/30 or 15W/40 Non-detergent Oil |
| Machine Type | Truck Skid Mount with 175 gal Water Tank | Standard Accessories | 3/8" x 50' High Pressure Hose; 0°, 15°, 25°, 40° and Chemical Nozzles; 36" Spray Gun & Wand Assembly; Hose Reel; Siphon Tube; LED Work Lights |
| Pressure Range | 3500-4000 PSI | Package Method | Iron Frame |
| Flow Rate | 4.0 GPM | Packing Size | 63 x 42.1 x 50.4 in |
| BTU Per Hour | 350,700 BTU | Weight (N.W / G.W.) | 631 / 728 lbs |
WARNlNG: This product can expose you to chemicals including engine exhaust (including diesel engine exhaust when equipped),lead and lead compounds, mineral oils, soots, phthalates, and carbon monoxide which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Certain specification(s) are based on engineering calculations and are not actual measurements. Specification(s) are provided for comparison purposes only and are subject to change without notice. Specification(s) for your individual equipment will vary based on normal variations in design, manufacturing, operating conditions, and other factors.
