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Mi-T-M CM-4200-0MMB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, 14280 CU
$1,498.00
Ships from US manufacturer with factory warranty
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Manufacturer's WarrantyFull manufacturer warranty included
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+1 (978) 295-7538CM-4200-0MMB Gas Pressure Washer — 4200 PSI ChoreMaster for Heavy Equipment Washing
The Mi-T-M ChoreMaster CM-4200-0MMB is the highest-output model in the ChoreMaster line, producing 4,200 PSI at 3.4 GPM — 14,280 cleaning units. Powered by a 420cc Mi-T-M OHV engine and a crankshaft pump built for sustained commercial duty, it handles fleet washing, heavy construction equipment, and concrete surface stripping where the 3,600 PSI model works too slowly. Cold water only; for grease and petrochemical removal, pair it with a chemical injector and appropriate detergent.
CM-4200-0MMB Cleaning Power and Engine Comparison
The 420cc displacement is nearly double the CM-3000's 212cc engine — the added torque reserves allow the pump to maintain rated pressure through surface cleaners and turbo nozzle attachments without the engine laboring.
- 4,200 PSI at 3.4 GPM (14,280 CU) — handles concrete stripping, fleet washing, and rust removal tasks that require sustained high pressure over large surface areas
- 420cc Mi-T-M OHV engine — Mi-T-M's largest single-cylinder OHV; more torque reserve than the 300cc CM-3600 engine, critical when running surface cleaner attachments that add load
- Mi-T-M crankshaft pump — commercial-duty triplex design; brass manifold, thermal relief valve, in-line water strainer standard
- Adjustable pressure unloader — allows pressure reduction for vehicle washing and painted surfaces without nozzle changes
- 10-inch flat-free tires — stable on gravel lots, construction debris, and loading dock surfaces
- Mi-T-M Pressure Relief Start — reduces compression during pull-starting; easier cold starts on heavy-displacement engines
CM-4200-0MMB Applications and Environments
Fleet maintenance operations washing semi-trucks, trailers, and heavy equipment will find the CM-4200-0MMB sustains the output needed for full-vehicle washing without the duty-cycle limitations of a smaller engine. Construction contractors use it for post-pour concrete form cleaning and foundation prep where cured concrete residue requires maximum PSI. Municipalities and county road departments running equipment wash stations keep these units for seasonal cleaning of plow trucks, road graders, and utility vehicles. The 142 lb unit fits a standard job trailer but requires a minimum two-person loading.
CM-4200-0MMB GPM, PSI, and Nozzle Configuration
Rated at 3.4 GPM at 4,200 PSI (14,280 cleaning units) at rated flow. Includes 15°, 25°, and detergent quick-connect nozzles; 50-foot × 3/8-inch wire-braided hose; 36-inch two-piece lance with trigger gun. Cold water only. Not for sale in California without CARB-compliant engine — consult factory.
Specifications
| PSI | 4,200 PSI at rated flow |
| GPM | 3.4 GPM |
| Cleaning Units | 14,280 CU (PSI × GPM) |
| Engine | 420cc Mi-T-M OHV |
| Pump Type | Mi-T-M Crankshaft |
| Unloader | Adjustable Pressure |
| Hose | 50 ft × 3/8 in wire-braided |
| Nozzles Included | 15°, 25°, detergent |
| Net Weight | 142 lbs |
| Dimensions (L × W × H) | 40 × 22.5 × 24.5 in |
| Hot/Cold | Cold water only |
| California Sale | Not for sale in CA (non-CARB); consult factory |
Documents
| Pressure | 4200 PSI |
|---|---|
| Flow Rate | 3.4 GPM |
| Water Temp | Cold |
Product Warranty Information
B2B & Tax-Exempt Purchases
We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.
How to place a tax-exempt order:
- Write to us through our Contact Us page or email info@uscleaningtools.com and attach your valid tax exemption certificate (state resale or exemption certificate).
- We verify your certificate and mark your account tax-exempt — usually within one business day.
- Place your order and sales tax will not be charged.
For volume pricing or purchase orders, call +1 (978) 295-7538.
Shipping & Returns
Free shipping on most brands for orders over $300, delivered to the lower 48 states. Any brand-specific freight rate is shown at checkout before you pay.
Processing & delivery: in-stock orders are processed within 1–2 business days and typically deliver in 5–7 business days. Tracking is emailed within 24 hours of shipment. Built-to-order and backordered equipment shows its lead time on this page.
Freight deliveries: inspect your equipment on arrival and note any damage on the delivery receipt. Items damaged in transit or defective on arrival are fully covered at no cost to you.
Cancellations: cancel any time before your order ships. Refunds are issued for the order total minus the non-refundable payment processing fee (2.9% + $0.30), so a cancellation is not always a 100% refund. No fee is deducted if we cancel the order or the item arrives damaged or defective.
30-day returns: return unused equipment in its original packaging within 30 days of delivery. Change-of-mind returns are subject to a restocking fee. To start a return, email info@uscleaningtools.com or call +1 (978) 295-7538.
$1,498.00
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Commonly paired with the Mi-T-M CM-4200-0MMB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, 14280 CU
Added to your order — shipped together.
Frequently Asked Questions
Parts & Accessories That Fit the Mi-T-M CM-4200-0MMB Gasoline Pressure Washer
Confirmed-fit wear parts and accessories for this machine. Not sure which you need? Call 9782957538.
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