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The CA-3504-1MAM produces 3500 PSI at 3.5 GPM — 12,250 cleaning units — from a 420cc Mi-T-M OHV engine paired with an AR crankshaft pump on Mi-T-M's 125-lb aluminum frame. Of the three engine options on the CA-3504 frame — Honda GX390 (1MAH), Kohler CH440 (1MAK), Mi-T-M OHV (1MAM) — this variant consolidates engine and pump support under Mi-T-M's authorized dealer network. Buyers who already operate Mi-T-M washers at lower output levels can extend the same engine parts inventory to this higher-output unit, simplifying procurement and technician training across a mixed-output fleet.
The 420cc Mi-T-M OHV engine matches the Kohler CH440 in the 420cc displacement class and provides the torque needed to sustain 3500 PSI / 3.5 GPM at the AR pump under continuous operation. With both engine and pump supported by Mi-T-M dealers, warranty claims, parts orders, and scheduled service flow through one contact — a logistical advantage for fleets managing multiple pressure washers across geographically distributed sites.
Mi-T-M fleet operators use the CA-3504-1MAM to standardize engine parts across their full pressure washer inventory: one oil specification, one air filter, one service technician, one parts supplier for all units from 2400 PSI to 3500 PSI. Construction companies that already have Mi-T-M dealer accounts use the 12,250 CU output for equipment prep between sites, concrete form cleaning, and building exterior washing. Industrial facilities apply it to production equipment washdown between manufacturing runs. Agricultural producers use it for post-harvest machinery cleaning where sustained high-pressure output clears caked residues that lighter units cannot handle in reasonable time.
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.
| PSI | 3500 PSI at rated flow |
| GPM | 3.5 GPM |
| Cleaning Units | 12,250 CU (PSI × GPM) |
| Engine | 420cc Mi-T-M OHV |
| Pump Type | AR Crankshaft |
| Unloader | Mi-T-M Adjustable Pressure |
| Hose | 50 ft × 3/8 in non-marking |
| Lance | 48 in |
| Nozzles Included | 0°, 15°, 25° quick-connect |
| Net Weight | 125 lbs |
| Dimensions (L × W × H) | 42.5 × 23.5 × 24.5 in |
| Hot/Cold | Cold water only |
| California Sale | Not for sale in CA (49-state engine) |
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