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.
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
Model 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 factory documentation (PN: CH18-750)
- Contains 43 exploded-view diagrams, 44 technical specification tables, and 17 electrical schematics
- Available as an instant download, giving you immediate access to necessary specifications
- Designed for shop use: Print individual sections to keep your laptop or tablet clean on the shop floor
- The primary 232-page reference for troubleshooting carbureted, LPG, and electronic fuel injection (EFI) systems
Engine Service and Technical Workflows
When dealing with starting issues or complex fuel delivery problems in the CH-series, guesswork wastes billable hours. This service manual provides the exact troubleshooting workflows for carbureted, gaseous, and electronic fuel injection systems. You get straightforward documentation on engine disassembly, precise governor adjustments, and complete reconditioning steps. Because this manual is provided via instant download, you can pull up the required specialized tool lists and inspection criteria right at your workbench without waiting for a physical book to arrive.
Engineered for accuracy, the document outlines critical data like metric and English fastener torque values, compression ratios, and valve clearances. For example, intake valve clearance is clearly specified at 0.11–0.20 mm, and you will find accurate air gap requirements (0.28–0.33 mm) for the ignition modules. Working on heavy-duty engines inherently carries risks associated with pressurized fuel and rotating parts. Always verify these reference values against your specific engine data plate and adhere to standard workshop safety procedures before starting any teardown. Reference what an OEM service publication covers for additional details on factory data inclusions.
Customer Reviews
Read what our customers say about this Kohler Gasoline-Engines manual and share your own experience.