Description

Kohler Command Service Manual – What You Get on the Bench

Right off the lift: if you’re tearing down a Kohler Command 5 or 6 HP engine, you need the factory book. I’ve seen guys grab aftermarket copies and end up with wrong specs on the governor arm or the retractable starter pawl. This Service Manual is the original Kohler document used by dealers. 109 pages, sectioned out from safety to final reassembly. No guesswork on torque values because they came from the same engineers who designed the engine.

Safety and General Information – Why It’s Page 1

The manual opens with the warnings you’d expect – explosive fuel, rotating parts, hot exhaust, accidental starts, carbon monoxide. But it also tells you exactly how to ground the spark plug before you put a wrench on the flywheel. Page 1 lists the three big hazards: explosive fuel, rotating parts, and hot surfaces. If you’ve ever had a kickback on a starter cup, you’ll read that section twice. I’ve watched a tech skip the grounding step and get a shock that threw him off the stool. Do not bypass this.

Special Tools Section – Don’t Start Without Them

Section 2 lists the Kohler special tools for this Command series. Things like the valve spring compressor, the rewind spring retainer tool, and the flywheel puller. If you don’t have them, the manual tells you which generic equivalents work and which don’t. Trying to pry a rewind spring without the holder means it unwinds and you’re hunting for parts across the shop floor. Read the list before you pull the rope starter.

Fuel System and Governor – Setting the Carburetor Right

Section 5 covers the Fuel System and Governor. This is where most DIY guys mess up. The manual walks you through carburetor disassembly, float adjustment, and governor link position. It gives the factory settings for the mixture screws and the idle speed. If you’re battling a surging engine, you’ll find the fix in the governor adjustment procedure. Do not rely on generic inline filter placements – the manual shows the correct orientation for fuel lines to prevent vapor lock. Also includes the fuel tank removal steps if you need to clean out old gas.

Electrical System and Components – The Wiring That Matters

Section 8 breaks down the Electrical system: ignition module, kill switch, charging circuit, and starter solenoid. The manual includes the resistance checks for the ignition coil and the stator. If your Command engine won’t fire, you’ll follow the troubleshooting tree on page 8 that tests spark and kill wire continuity. I’ve seen a newbie buy three coils before realizing a corroded spade connector was the issue. The wiring diagram in this section is factory correct – no redrawn approximations. Use it.

Disassembly and Reassembly – 11 Sections Covering the Full Overhaul

Sections 9 through 11 take you from pulling the head to torquing the block back together. The manual specifies oil fill capacities (check the lubrication system, Section 6) and the correct sequence for tightening head bolts. Internal components in Section 10 include piston ring gaps, connecting rod side clearance, and valve stem height. If you’re doing a total rebuild, you rely on these pages. Aftermarket manuals often skip the step of checking rod side clearance; this one doesn’t. The reassembly section includes thread locker recommendations and torque patterns for the crankcase cover. Follow each step, and the engine will start on the first pull.

Need a primer on how a manual transmission works to understand governor linkage? Check the Manual Transmission explanation elsewhere. For broader Kohler engine knowledge, the Manual Transmission resource helps with drivetrain concepts.

Related Manuals for Kohler Techs

If you’re studying for certification, start with the Kohler Technicians Certification Test Study Guide. For smaller single-cylinder engines, the Kohler XT-6 XT-7 Service Manual – 84 Pages OEM Factory Specs covers similar architecture. For the larger OHC horizontal crank engines, grab the KOHLER OHC 16,18 HP Horizontal Crankshaft Service Manual – it shares the same diagnostic philosophy but different internal clearances.

Frequently Asked Questions

Does this manual cover both the CH5 and CH6 models?

Yes. The manual specifically covers the Command 5 HP and Command 6 HP engines, including the CH5 and CH6 variants. Both are addressed in Sections 4A and 4B for air cleaner/intake system.

What torque values are listed?

The manual includes factory torque specifications for critical fasteners such as cylinder head bolts, connecting rod bolts, and flywheel nut. For exact values, refer to the reassembly section on page 11. These specs are not published here because they vary by model year – you need the actual booklet.

How should I troubleshoot a no-start issue?

Start with Section 3 Troubleshooting. The manual guides you through checking fuel supply, spark, compression, and governor adjustments. For fuel system, check fuel lines, carburetor, and governor linkage per Section 5. For electrical, use a multimeter to test ignition module and kill wire per Section 8. Always disconnect the spark plug before testing. If the engine doesn’t crank, inspect retractable starter per Section 7. The manual provides systematic steps to isolate the problem without swapping parts randomly. This approach saves time and prevents misdiagnosis. If the engine fires but runs rough, move to governor adjustment in Section 5 and then to carburetor rebuild. Do not skip compression testing – a warm engine with low compression points to valve issues in Section 10.

Is this manual an original OEM publication?

Yes, it is an original Kohler factory service manual, not a reprint or summary. The file is the exact dealer publication used by authorized service centers.

This is the book you want on your bench when the Command engine is apart. No second-guessing the carburetor settings or the flywheel torque. Access the Factory Manual now and keep it in your tool chest – you’ll reference it every time a small Command comes in.