Kohler CH18-750 Command Horizontal Engine Service Manual
30 HP horizontal crankshaft with service procedures for fuel systems, ignition, electrical components, and complete engine disassembly/reassembly. Factory documentation PN: CH18-750.
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Kohler Models Covered & Key Technical Specifications
Models: Kohler CH18, Kohler CH20, Kohler CH22, Kohler CH23, Kohler CH25, Kohler CH26, Kohler CH730, Kohler CH740, Kohler CH745, Kohler CH750
Sub-models / Variants: Command, Command Pro, Horizontal Crankshaft, EFI (Electronic Fuel Injection), Carbureted, LPG Fuel Systems, Electric Start
Trade Names: Command, Command Pro
Build Years: 1991–2007
Serial Numbers: 3305810334, CH730-0001, CH740-0001, CH745-0001, CH750-0001
Technical Data:
- Engine power output: 13.4 kW (18 HP) to 22.3 kW (30 HP) at 3600 RPM
- Peak torque: 43.6 Nm (32.2 ft. lb.) to 64.4 Nm (47.5 ft. lb.)
- Displacement: 624 cc, 674 cc, 725 cc, 755 cc
- Compression ratio: 8.5:1, 9.0:1, 9.4:1
- Oil capacity: 1.6–1.8 L (1.7–1.9 U.S. qt.)
- Dry weight: 41 kg (90 lb.) to 48 kg (105 lb.)
Kohler Manual Features & Content Preview
Technical Scope and Coverage
- Covers 1991–2007 Kohler Command and Command Pro horizontal crankshaft engines, including CH18, CH20, CH22, CH23, CH25, CH26, and CH730–750 variants
- Original OEM publication, form number Not identified in document
- Contains 43 exploded-view diagrams, 44 technical specification tables, and 17 electrical schematics
- File link appears in your order confirmation straight away
- Suitable for printing individual sections for shop-floor use
- This 232-page service manual is the primary reference for troubleshooting carbureted, LPG, and electronic fuel injection systems across the Kohler Command series
Engine Systems and Technical Data
Engine Service and Troubleshooting
This Kohler Command service manual documents the complete range of CH-series engines. The chapters detail safety procedures, troubleshooting guides for starting and running issues, air intake system maintenance, and carbureted, gaseous, and electronic fuel injection systems. The text provides guidance on engine disassembly, inspection, reconditioning, and reassembly. It includes specific information on governor adjustment, cooling systems, and specialized tools required for service.
Specification Highlights
This document provides technical data including torque values for metric and English fasteners, valve clearances, and compression ratios. Valve clearance for the intake is listed at 0.11–0.20 mm in the cylinder head specification table. The coolant system is not applicable to these air-cooled units, but the oil capacity for the CH750 is documented at 1.6–1.8 liters. The Suzuki-based ignition modules require an air gap of 0.28–0.33 mm. Reference what an OEM service publication covers for additional details. 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 232-page Kohler OEM workshop manual covering the 1991–2007 CH18–CH750 Command horizontal engine series, documenting internal engine components, electrical systems, and fuel injection specifications for standard and heavy-duty configurations.
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