Kohler CH640-3203 – 20.5HP 674cc Engine Replace CH640-3005
Kohler CH640-3203 features a direct replacement design for the PA-CH640-3005, delivering a seamless and powerful repower solution for industrial machinery.
- 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: Precise replacement specification match.
Description
Kohler CH640-3203 20.5HP Horizontal Engine
Solving compatibility issues for legacy equipment, the Kohler CH640-3203 provides a direct-replacement solution for the discontinued CH640-3005 model. This 674cc Command PRO architecture allows the Kohler-manufactured platform to produce 44.1 Nm of torque for consistent load management during heavy industrial cycles. The specialized 3203-spec layout integrates hydraulic lifters to optimize volumetric efficiency and eliminate manual valve lash adjustments during 20.5HP operations. This specific propulsion unit ensures seamless mechanical integration for professional contractors upgrading older industrial machinery in North America.
Advanced emission compliance standards define the Kohler CH640-3203 as a premier choice for environmentally conscious industrial repowering projects. The specialized metallurgy in this 3203 specification utilizes forged steel connecting rods and chrome-plated rings to mitigate component wear. This horizontal engine incorporates a dual-element air cleaner to maintain fuel delivery integrity when operating in high-debris construction environments. Professional operators appreciate the precise 1-1/8 inch straight keyed shaft mounting configuration.
Technical Specifications of Kohler 20.5HP CH640-3203
- Direct 20.5HP replacement optimizes legacy equipment
- Proven 674cc displacement yields superior power density
- Controlled 5.5 Lph fuel flow sustains tasks
- Rugged 44.1 Nm torque manages industrial stress
- Standard 1-1/8 inch keyed shaft secures drives
- Internal 12V electric starter provides quick ignition
- Advanced forced air system prevents thermal runaway
Kohler Command Pro CH640-3203 Technical Specs
| Brand | Kohler |
| Full Model Code | CH640-3203 (Replacement for CH640-3005) |
| 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" (25.4 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 | Direct Engine Replacement, Commercial Turf Equipment, Chippers |
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