Kohler CH18, CH20, CH22, CH25 Command Engine Service Manual 1991-1997

Kohler Command 18–25 HP Engine Service Manual (1991–1997)

• Covers 1991–1997 Kohler Command CH18, CH20, CH22, and CH25 horizontal crankshaft engine variants with standard electric start systems
• Official Kohler publication P/N 24 455 04-S, covering engine service and maintenance procedures for the Command engine series
• Contains 40+ exploded-view diagrams and 10+ detailed wiring schematics for both standard and Electronic Fuel Injection (EFI) system models
• Downloads to your account within seconds of checkout
• Indexed PDF search covers every chapter and appendix
• Re-download the file any time, no expiration
• Page spreads stay legible when printed at original size
• This 184-page manual serves as the primary technical reference for diagnosing ignition, governor, and cooling system performance across the entire 1991–1997 Kohler engine production run

Engine Service and Diagnostic Scope

The 1991–1997 Kohler Command CH18–CH25 service manual provides a structured overview of all primary maintenance and repair procedures for the Command horizontal-shaft engine line. Initial sections document standard safety information, recommended special tools, and comprehensive troubleshooting flow charts for common operational issues such as starting difficulty, engine overheating, and power loss. Subsequent chapters detail the air intake system, lubrication circuits, and retractable starter components, providing clear guidance on regular service intervals, oil and filter replacement sequences, and cooling system cleaning techniques.

EFI System and Technical Specification Highlights

Advanced diagnostic data for the EFI-equipped Kohler Command series is documented in detail, including pinout tables for both metal and plastic-cased ECUs and fault code identification procedures. Technical specifications for electrical sensors such as the oxygen sensor, oil temperature sensor, and throttle position sensor (TPS) are listed alongside essential electrical reference values. Cylinder head fastener torque values are documented at 40.7 N·m (30 ft. lb.) in the engine assembly data. Intake valve minimum lift is listed at 8.07 mm in the cylinder head specification table. Crankcase breather cover mounting fasteners are tightened to 8.6 N·m in the crankcase assembly data. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work.

An official 184-page Kohler OEM workshop manual covering the 1991–1997 Command CH18–CH25 engine series, documenting lubrication, fuel, electrical, and governor system specifications for the CH-series horizontal crankshaft build.

Document Reference: Part No. 24 455 04-S