Kohler Command CH11 CH12.5 CH 13 CH14 CH15 CH16 Horizontal Crankshaft Factory Service Repair Manual

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• Engine design: These are single-cylinder, four-stroke engines with an Overhead Valve (OHV) design, providing a balance of power and efficiency.
• Crankshaft: All these models have a horizontal crankshaft, which distinguishes them from vertical-shaft models (the CV series).
• Durability: Key components, like the cylinder liner, are made from cast iron to increase the engine’s lifespan.
• Ignition system: They feature a maintenance-free electronic ignition system that provides fast, dependable starts.
• Lubrication: A full-pressure lubrication system is used to ensure adequate oil flow to all critical parts.
• Serviceability: For ease of service, routine maintenance areas like the dipstick, oil filter, air cleaner, spark plug, and carburetor are easily accessible. 

• Starting problems: Can be caused by a weak battery, faulty spark plugs, a clogged carburetor, or dirty fuel.
• Engine overheating: This can happen if cooling fins are clogged with debris, or due to low oil levels. Keeping the fins clean and the oil level topped off is crucial.
• Loss of power: A dirty air filter, fuel system blockages, or internal wear can all lead to reduced power output.
• Oil leaks: Commonly caused by worn gaskets or seals. Always check for the correct oil type and fill level.
• After-firing (backfiring): Some CH16 models in equipment like the Cub Cadet 2166 have experienced after-firing, which can be caused by a delayed fuel cut-off or ignition timing issues. 

• Rebuild Engine Kits: Kits including pistons, valves, gaskets, and seals are available for the CH11, CH12.5, CH13, and CH14 engines.
• Carburetors: A Stens Carburetor 520-054 fits the CH11, CH12, CH14, and CH15 models. A repair kit is also available for the CH11 through CH16 models.
• Fuel Pumps: A Fuel Pump Kit 12-559-02-S is available for the CH11–CH16 engines.
• Ignition Coils: A replacement Ignition Coil fits the CH11, CH12.5, CH13, CH14, and CH15 models.
• Service/Shop Manuals: Service manuals providing detailed repair and maintenance procedures for the entire CH11 through CH16 series are available from retailers like Agcon Supply. 

• For parts: Websites like PartsTree, eReplacementParts.com, and numerous third-party sellers on eBay and Amazon sell individual components.
• For new or used engines: You may find new old stock (NOS) or professionally rebuilt engines on eBay or specialized small engine websites.