Mi-T-M CA-4004-1MAK Aluminum Pressure Washer – 4000 PSI, 3.5 GPM, Kohler CH440

CA-4004-1MAK Gas Pressure Washer — CA Aluminum Series 4000 PSI with Kohler CH440

The CA-4004-1MAK produces 4000 PSI at 3.5 GPM — 14,000 cleaning units — from a 429cc Kohler CH440 OHV engine paired with an AR crankshaft pump on Mi-T-M's 125-lb aluminum frame. The CH440 is Kohler's largest single-cylinder commercial engine, providing the displacement and torque reserve appropriate for sustained 4000 PSI output. Among the four CA-4004 standard engine variants, the 1MAK is the choice for operations with Kohler dealer accounts, for facilities that maintain CH440-powered equipment, or for buyers who prefer Kohler's commercial engine warranty terms. ETL listed for US commercial use.

CA-4004-1MAK Engine Selection and Output

At 14,000 CU the CA-4004 handles applications beyond the CA-3504's capacity — stripping loose coatings from masonry, removing dense industrial fouling from equipment, and sustaining high cleaning output across large vehicle fleets. The Kohler CH440 at 429cc is the largest available engine on the CA-4004 frame. Its cast-iron cylinder liner and full-pressure lubrication system are the same construction features used in Kohler commercial engines rated for high-hour industrial applications.

• 4000 PSI at 3.5 GPM (14,000 CU) — maximum standard output in the CA Aluminum Series; handles coating stripping, dense industrial fouling, and large-fleet washing
• 429cc Kohler CH440 OHV engine — Kohler's largest single-cylinder commercial engine; cast-iron liner, full-pressure lubrication; Kohler commercial warranty
• AR crankshaft pump, forged brass manifold, thermal relief valve — AR rated for sustained commercial 4000 PSI; brass resists mineral scaling; thermal valve protects during idle
• 125-lb corrosion-resistant aluminum frame, 13-in flat-free tires — lighter than steel-frame JP-4004 alternative; aluminum resists outdoor corrosion
• ETL listed, vibration isolation plate — ETL certification for commercial procurement; vibration plate reduces pump seal wear
• 50-ft × 3/8-in hose, 48-in lance, CX-0098 External Bypass available — complete kit; bypass ordered separately and installed at point of sale

CA-4004-1MAK Applications and Environments

Operations with Kohler-powered floor sweepers, compressors, or aerial work platforms add the CA-4004-1MAK to unify their engine inventory: one parts supplier, one oil specification, one service technician across equipment categories. Heavy industrial cleaning contractors use the 14,000 CU output for applications requiring more than one pass from the CA-3504. Fleet operations washing tanker trucks, buses, and heavy-duty trailers rely on the 4000 PSI output for efficient removal of road salt, diesel exhaust deposits, and oil contamination. Construction firms apply it to concrete surface preparation and equipment cleaning before redeployment.

CA-4004-1MAK GPM, PSI, and Nozzle Configuration

Rated at 3.5 GPM at 4000 PSI (14,000 cleaning units) at rated flow. Includes quick-connect nozzles in 0°, 15°, and 25° patterns; 50-ft × 3/8-in non-marking high-pressure hose; 48-in lance with insulated trigger gun. Cold water only. 49-state engine — not for sale in California.

Specifications

Documents

Spec Sheet
Manual

Video Overview