Kohler Command PRO CH23 - User Manual

24 590 43 Rev. --
KohlerEngines.com
Owner's Manual
IMPORTANT: Read all safety precautions and instructions carefully before
operating equipment. Refer to operating instruction of
equipment that this engine powers.
Ensure engine is stopped and level before performing any
maintenance or service.
Warranty coverage as outlined in the warranty card and on
KohlerEngines.com. Please review carefully as it provides you
specifi c rights and obligations.
To maintain compliance with applicable emission regulations,
exhaust system backpressure may not exceed limits which can
be found on KohlerEngines.com. Search by Model No., select
Read More, then select Specs tab.
Record engine information to reference when ordering parts or obtaining warranty coverage.
Engine Model
Specifi cation
Serial Number
Purchase Date
CH23, CH620-CH740, CH750
CV23, CV620-CV740, CV750
EN
ESS
FRC

Kohler Command PRO CH23 Specifications

General

Fuel Type	Gasoline
Cooling System	Air-cooled
Starting System	Electric
Compression Ratio	8.5:1
Max Power RPM	3600 RPM
Power Output	23 hp (17.1 kW)
Alternator	15 Amp
Max Torque RPM	2400

Summary

Important Safety and Operating Information

General Safety Precautions

Explosive Fuel Warning

Hazards of flammable fuel and the risk of explosion.

Accidental Starts Warning

Risks of severe injury or death from unintended engine starts.

Hot Parts Warning

Danger of severe burns from touching hot engine components.

Pre-Start Checklist

Engine Starting Procedures

Carbon Monoxide Warning

Reiterates the danger of carbon monoxide from exhaust fumes.

Rotating Parts Warning

Reiteration of hazards from engine moving parts.

General Maintenance Instructions

Maintenance Schedule

Oil Recommendations and Viscosity Chart

Checking Engine Oil Level

Changing Engine Oil and Filter

Fuel Recommendations

Spark Plug Service and Inspection

Electrical Shock Caution

Safety warning regarding electrical hazards during spark plug service.

Air Cleaner Maintenance

Air Cooling and Hot Parts Warning

Troubleshooting Guide

Engine Specifications

Safety Precautions

Warning: Explosive Fuel

Hazards of flammable fuel and the risk of explosion.

Warning: Rotating Parts

Dangers associated with moving engine components during operation.

Warning: Carbon Monoxide

Risks of poisoning from inhaling engine exhaust gases.

Warning: Accidental Starts

Safety measure to disable engine before servicing to prevent unintended starts.

Caution: Electrical Shock

Warning about potential injury from electrical components.

Caution: Damaging Crankshaft and Flywheel

Caution: Failure to Utilize or Reassemble Debris Screen

Warning: Uncoiling Spring

Maintenance Instructions

Accidental Starts Warning

Critical safety step to disable the engine before commencing maintenance.

Oil Recommendations

General Engine Specifications

Torque Specifications (Fasteners)

Torque Specifications (Components)

Clearance Specifications (Mechanical)

Clearance Specifications (Crankcase and Bore)

Clearance Specifications (Governor and Piston)

Clearance Specifications (Piston, Rings, and Pin)

Clearance Specifications (Valves and Lifters)

General Torque Values (Fasteners)

Troubleshooting Engine Performance Issues

Troubleshooting Crankcase Vacuum Issues

Troubleshooting Compression and Leakdown

Air Cleaner and Intake System Maintenance

Fuel System Overview

Fuel System Tests

Carburetor Troubleshooting Checklist

Troubleshooting Carburetor Related Causes

Carburetor Circuits and Adjustments

Carburetor Servicing

Governor System Overview

Governor Adjustments

Governor Sensitivity and Electronic Governor

Troubleshooting (Governor System)

Common issues with engine speed and linkage for governor systems.

Lubrication System Overview

Change Oil and Filter

Step-by-step guide for changing engine oil and filter.

Oil Recommendations

Guidance on selecting the correct oil viscosity.

Check Oil Level

Procedure for checking and maintaining the engine oil level.

Spark Plugs Service and Inspection

Ignition System Components and Fouled Plugs

Battery Requirements and Maintenance

Fixed Ignition System Components

Smart-Spark Advance Ignition System

Digital Spark Advance Ignition (DSAI) System

Electronic Ignition Systems Testing

Testing for Spark and Timing Advance

Test Ignition Modules and Connections (DSAI only)

Testing Ignition Modules and Connections (Smart-Spark)

Battery Charging System Precautions

Testing Ignition Modules and Connections (ASAM;DSAM)

Testing Ignition Modules and Connections (ASAM;DSAM) (Continued)

Rectifier-Regulator Testing

Battery Charging Systems Testing (No Charge)

Battery Charging Systems Testing (High Charge Rate)

Starter System Troubleshooting

Inertia Drive Electric Starters Components and Service

Starter Disassembly and Brush Replacement

Solenoid Shift Electric Starters Components

Starter Disassembly and Inspection (Delco-Remy)

Starter Reassembly (Delco-Remy)

Solenoid Tests

Retractable Starters Components and Service

Pawls (dogs) Replacement and Starter Installation

Clutch Service and Adjustment

Crankcase Components

Oil Pump Assembly (Style A) Service

Oil Pump Assembly (Style B) Service

Camshaft Removal and Inspection

Connecting Rods and Piston Service

Piston and Rings Inspection

Piston Style B Ring Installation

Connecting Rods Inspection and Service

Crankshaft Removal and Inspection

Cylinder Bore and Piston Measurement

Crankcase Components Reassembly

Governor Gear Assembly Service

Oil Pump Assembly (Service)

Governor Gear Assembly (Service)

Install Closure Plate Assembly

Install Flywheel;Ignition Components

Install Flywheel

Cylinder Head Components Installation

Install Hydraulic Lifters

Valve Stem Seals

Assemble Cylinder Heads

Install Cylinder Heads

Install Push Rods and Rocker Arms

Install Spark Plugs

Install Ignition Modules

Install Intake Manifold

External Engine Components Reassembly

Install Carburetor

Install Valve Covers

Torque Specifications-Covers

Install Air Cleaner Assembly (Low-Profile)

Install Air Cleaner Assembly (Heavy-Duty)

Install Oil Filter and Fill Crankcase

Connect Spark Plug Leads

Final Reassembly Steps

Torque Specifications-Covers

Air Cleaner Assembly Installation

Oil Filter and Crankcase Filling

Steps for installing the oil filter and filling the crankcase with oil.

Spark Plug and Engine Preparation