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Mi-T-M JP-3504-3MKB Gasoline Pressure Washer – 3500 PSI, 3.5 GPM, Kohler CH440

Mi-T-M JP-3504-3MKB Gasoline Pressure Washer – 3500 PSI, 3.5 GPM, Kohler CH440

Brand: Mi-T-MSKU: JP-3504-3MKBIn Stock – Ready to Ship
$2,850.00
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JP-3504-3MKB Gas Pressure Washer — JP Series 3500 PSI, 3.5 GPM with Kohler CH440

The Mi-T-M JP Series JP-3504-3MKB is the Kohler-powered version of the JP 3,500 PSI platform, pairing the same AR crankshaft pump and JP frame with a 429cc Kohler CH440 OHV engine. Output is identical to the Honda and Mi-T-M engine variants: 3,500 PSI at 3.5 GPM, 12,250 cleaning units. The Kohler CH440 is the largest single-cylinder in Kohler's CH commercial series, used in heavy-load outdoor power equipment — its full-pressure lubrication system is rated for longer duty cycles than splash-lube designs at this displacement.

JP-3504-3MKB Kohler CH440 Engine and Pump System

The CH440's full-pressure lubrication is a meaningful specification for sustained daily operation — it maintains oil pressure to bearing surfaces regardless of operating angle or load fluctuations.

  • 3,500 PSI at 3.5 GPM (12,250 CU) — same output as Honda and Mi-T-M variants; engine choice does not affect pump output
  • 429cc Kohler CH440 OHV engine — Kohler's largest CH-series single; full-pressure lubrication, cast-iron sleeve, commercial warranty
  • AR crankshaft pump — triplex ceramic plunger; rated for sustained high-output operation at 3.5 GPM and 3,500 PSI
  • 48-inch lance, 50-foot non-marking hose — extended reach for fleet vehicles and large equipment from one position
  • 10-inch flat-free tires, 40-inch powder-coated steel frame — job site rated; 142 lbs requires two-person trailer loading
  • Adjustable pressure unloader — scale output pressure down for vehicle washing without nozzle changes

JP-3504-3MKB Applications and Environments

Municipal equipment yards, agricultural cooperatives, and construction operations that run Kohler-powered equipment benefit from consolidated engine purchasing with this model. The CH440's full-pressure lubrication makes it a practical choice for machines running 4–6 hour daily wash cycles — the lubrication system sustains oil pressure under sustained high-torque load better than splash-lube engines at the same displacement. Fleet washing operations cleaning semi-trucks, tankers, and construction equipment get 12,250 CU throughput from a machine that integrates with their existing Kohler service program.

JP-3504-3MKB GPM, PSI, and Nozzle Configuration

Rated at 3.5 GPM at 3,500 PSI (12,250 cleaning units) at rated flow. Includes 0°, 15°, and 25° quick-connect nozzles; 50-foot × 3/8-inch non-marking hose; 48-inch lance with insulated trigger gun. Cold water only. 49-state Kohler CH440 — not for sale in California.

Specifications

PSI 3,500 PSI at rated flow
GPM 3.5 GPM
Cleaning Units 12,250 CU (PSI × GPM)
Engine 429cc Kohler CH440 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°
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 (49-state engine)

Documents

Spec Sheet
Manual

TypeCart
Pressure3500 PSI
Flow Rate3.5 GPM
Water TempCold
PowerGasoline
EngineKohler

Product Warranty Information

"1 Year Unloader, 3 Year Honda Engine, 7 Year Pump"

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We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.

How to place a tax-exempt order:

  1. 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).
  2. We verify your certificate and mark your account tax-exempt — usually within one business day.
  3. Place your order and sales tax will not be charged.

For volume pricing or purchase orders, call +1 (978) 295-7538.

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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 for a full 100% refund.

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.

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Frequently Asked Questions

What is the difference between the JP-3504-3MKB, 3MHB, and 3MMB?
Engine only: 3MKB = 429cc Kohler CH440; 3MHB = 389cc Honda GX390; 3MMB = 420cc Mi-T-M OHV. All three produce 3,500 PSI at 3.5 GPM through the same AR crankshaft pump. Choose based on preferred engine service network.
What makes the Kohler CH440 different from the CH395 on lower-output models?
The CH440 is 429cc (vs 277cc for CH395) and includes full-pressure lubrication instead of splash lubrication. Full-pressure lube maintains oil pressure to bearing surfaces under sustained high-load operation — better suited for daily 4+ hour operation at 3.5 GPM pump load than the CH395.
What oil does the Kohler CH440 require?
Kohler specifies SAE 10W-30 for the CH440. Oil capacity is approximately 1.5 quarts. Change at 5-hour break-in, then every 100 hours or annually. Full-pressure lube enables longer drain intervals than splash-lube designs.
Is the JP-3504-3MKB available for California sale?
No — the Kohler CH440 is a 49-state non-CARB engine. Contact Mi-T-M for California-compliant configurations.
Does the JP-3504 support a surface cleaner?
Yes — an 18–21 inch surface cleaner rated for 3,500 PSI and up to 3.5 GPM is appropriate. Larger surface cleaners that require more than 3.5 GPM will spin unevenly and underperform.
How does the JP-3504-3MKB compare to the Work Pro WP-4200-0MKB?
The WP-4200-0MKB produces 4,200 PSI at 3.4 GPM (14,280 CU) vs the JP-3504's 3,500 PSI at 3.5 GPM (12,250 CU). The WP-4200 has more PSI; the JP-3504 has slightly more GPM. Both use the Kohler CH440 engine. The Work Pro series uses a Mi-T-M crankshaft pump vs the AR pump on the JP series. Choose based on whether PSI (WP-4200) or GPM (JP-3504) is the primary productivity driver for your work.

Frequently Asked Questions

1. What payment methods can I use?

We accept Visa, MasterCard, American Express, Diners Club, Discover, major debit cards, and digital wallets like PayPal, Google Pay, Meta Pay, and Apple Pay.

2. When will my payment be processed?

Your credit/debit card or PayPal account will be charged when you place your order. Secure payment processing protects your information.

3. Will I receive an order confirmation?

Yes, a confirmation email will be sent to the provided email address once the order is placed.

4. How long does it take to process an order?

Orders are processed within 1-2 business days and then prepared for shipment.

5. How long does it take for my order to arrive?

Estimated arrival time (ETA) is 5-7 business days for all orders.

6. Do you offer warranty?

All our products come with a manufacturer warranty of at least 1 year, depending on the brand.

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