Mi-T-M CA-3504-1MAH Aluminum Pressure Washer – 3500 PSI, 3.5 GPM, Honda GX390

CA-3504-1MAH Gas Pressure Washer — CA Aluminum Series 3500 PSI with Honda GX390

The CA-3504-1MAH produces 3500 PSI at 3.5 GPM — 12,250 cleaning units — from a 389cc Honda GX390 OHV engine paired with an AR crankshaft pump on Mi-T-M's aluminum frame. At 125 lbs it is substantially lighter than equivalent steel-frame units at this output level, which typically weigh 140–160 lbs. The step from the CA-3003 series (9,000 CU) to the CA-3504 (12,250 CU) is a 36% increase in cleaning power — the difference between washing moderately fouled equipment surfaces and removing heavy mud, caked road film, and grease from the same surfaces in the same time. ETL listed for US commercial use.

CA-3504-1MAH Output and Engine Selection

The CA-3504 frame is offered in three standard engine variants — Honda GX390 (1MAH), Kohler CH440 (1MAK), and Mi-T-M OHV (1MAM) — all producing the same 3500 PSI / 3.5 GPM from the same 125-lb aluminum frame. The Honda GX390 is the choice for buyers with Honda dealer relationships or who operate in regions with strong Honda service network coverage. A separate 4.0 GPM high-flow variant (1MGH) is also available on the CA-3504 frame with a different pump.

• 3500 PSI at 3.5 GPM (12,250 CU) — 36% more cleaning power than the CA-3003; handles heavy equipment fouling and road film in fewer passes
• 389cc Honda GX390 OHV engine — Honda's commercial-duty single-cylinder; global dealer network for parts and service
• AR crankshaft pump, forged brass manifold, thermal relief valve — AR rated for sustained commercial-duty 3500 PSI; brass handles mineral-rich water; thermal valve protects pump during trigger-closed idle
• 125-lb corrosion-resistant aluminum frame, vibration isolation plate — 15–35 lbs lighter than steel-frame equivalents; aluminum resists rust in outdoor storage
• 13-in flat-free tires, ETL listed — larger than the 10-in tires on lower-output CA models; flat-free tires handle rough terrain; ETL listing accepted for commercial procurement
• 50-ft × 3/8-in hose, 48-in lance — 48-in lance extends reach for elevated surfaces and large equipment; CX-0098 External Bypass available to protect pump from heat build-up

CA-3504-1MAH Applications and Environments

Fleet operators upgrading from the CA-3003 use the CA-3504-1MAH where 9,000 CU is insufficient for their heaviest cleaning loads — tanker truck washing, agricultural equipment with caked mud and silage, and concrete form cleaning. Construction contractors apply the 12,250 CU output to equipment preparation between job sites. Property restoration companies use it for building facade cleaning before coating. Industrial facilities apply it to production equipment washdown involving process residues that lighter units cannot clear in one pass. Municipal vehicle yards use it for heavy fleet cleaning where throughput per shift matters.

CA-3504-1MAH GPM, PSI, and Nozzle Configuration

Rated at 3.5 GPM at 3500 PSI (12,250 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