Kohler CH640-3204 – 20.5HP 674cc Horizontal Engine
Kohler CH640-3204 features a 1-1/8 inch shaft and high-torque performance, providing a smooth and efficient power solution for professional lawn and garden tractors.
- Engine Type: 4-Stroke 674cc V-Twin OHV.
- Output Shaft: 1-1/8 inch straight keyed.
- Starting System: Solenoid shift electric start.
- Output Power: 20.5 HP peak performance.
- Control Technology: Large-capacity dual-element air filter.
Description
Kohler CH640-3204 20.5HP Horizontal Engine
Solving fuel delivery instability in professional floor grinders, the Kohler CH640-3204 facilitates a precision-tuned solution via its integrated pulse-style fuel pump and filtration system. This 674cc overhead valve configuration allows the Kohler-manufactured architecture to produce 44.1 Nm of torque for steady load management. The specialized 3204-spec layout integrates hydraulic lifters to optimize volumetric efficiency and dampen mechanical noise during heavy-duty 20.5HP duty cycles. This specific propulsion unit ensures peak mechanical reliability for professional contractors operating concrete surfacing equipment in North America.
Advanced emission compliance standards define the Kohler CH640-3204 as a leader in environmentally conscious industrial engineering for sensitive worksites. The specialized metallurgy in this 3204 specification utilizes cast iron cylinder liners and chrome-plated rings to mitigate component wear. This horizontal engine incorporates a dual-element air cleaner to maintain combustion integrity when operating in high-debris construction environments. Professional operators appreciate the versatile 1-inch straight keyed shaft mounting configuration.
Technical Specifications of Kohler 20.5HP CH640-3204
- Advanced 4-Stroke V-Twin design minimizes maintenance
- Potent 674cc displacement architecture maximizes engine density
- Efficient 5.5 Lph fuel rate maintains efficiency
- Rugged 44.1 Nm torque manages industrial stress
- Standard 1-inch keyed shaft secures drive belts
- Internal 12V electric starter provides quick ignition
- Advanced forced air system prevents thermal runaway
Kohler Command Pro CH640-3204 Technical Specs
| Brand | Kohler |
| Full Model Code | CH640-3204 |
| Country of Origin | USA |
| Engine Orientation | Horizontal Shaft |
| Engine Type | 4-Stroke, OHV, V-Twin |
| Displacement | 674 cc |
| Bore x Stroke | 80 x 67 mm |
| Compression Ratio | 8.5:1 |
| Maximum Output | 15.3 kW (20.5 HP) @ 3600 RPM |
| Maximum Torque | 45.0 Nm (33.2 lbs-ft) @ 2400 RPM |
| Specific Fuel Consumption | 6.0 L/hr @ 3600 RPM |
| Fuel Induction System | Two-Barrel Carburetor |
| Ignition System | Electronic Ignition |
| Start System | Electric Start |
| Shaft Specification | 1-1/8" (28.5 mm) Straight Keyway Shaft |
| Fuel Tank Capacity | Data not released (External) |
| Oil Capacity & Type | 1.9 Liters / SAE 10W-30 |
| Cooling System | Air Cooled |
| Dry Weight | 41.0 kg |
| Dimensions | 355 x 441 x 490 mm |
| Standard Warranty | 3 Years |
| Primary Application | Hydraulic Units, Utility Vehicles, Chippers/Shredders |
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