Kohler CV13S Troubleshooting
| Engine Model: Kohler Command CV13S |
| Engine Type: 4-cycle single-cylinder vertical shaft air-cooled gasoline |
| Total Displacement: 24.3 cu.in (398 cc) |
| Rated Engine Power: 13 Hp (9.8 kW) at 3600 rpm |
| Carburetor Type: Float with fixed main jet |
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| Engine starts up hard or will not start |
Empty fuel tank - Fill fuel up.
Wrong fuel grade - Use quality fuel.
Fuel system clogged - Repair or replace.
Spark plug wiring connection is defective - Check the spark plug wire connection, repair or replace.
Damaged spark plug - Change spark plug as required.
Fuel filter is dirty - Replace fuel filter.
Defective safety switch - Replace if required.
Carburetor problems - Carburetor diagnostics required.
Engine has bad compression - Check cylinder block and change wear parts.
Worn or improperly adjusted choke cable - Adjust correctly or replace the cable.
| Engine runs intermittently |
Cooling fins are plugged - Wash or clean as required.
Defective ignition - Check ignition and replace faulty components.
Choke cable is defective or stuck - Replace or service the cable.
Air filter is blocked - Service or change air filter.
Dirty or faulty fuel pump - Test fuel pump and change if necessary.
| Engine starts but stalls suddenly |
Defective spark plug - Change spark plug.
Carburetor is dirty or defective - Clean or replace carburetor.
Ignition coil is defective - Ignition coil must be replaced.
Broken or bad valve springs - New valve springs need to be installed.
Valves sticking - Service the valves.
Engine oil level is insufficient - Add oil to the engine crankcase.
Engine is running overloaded - Reduce load.
Air intake screen is blocked - Wash or clean as required.
Too lean carburetor mixture - Set the carburetor correctly.
Incorrect ignition timing - Set the ignition timing properly.
Improper valve setting - Valves needs to be adjusted properly.
Low octane fuel - Change fuel.
Excessive engine load - Reduce the load.
Engine oil level is insufficient - Fill the crankcase with engine oil.
Low idle speed adjustment is incorrect - Correct the settings.
Clogged or defective fuel pump - Service or replace fuel pump.
Crankshaft or main bearings failure - Change or repair worn components.
Valve clearance is incorrect - Adjust to proper valve clearance.
Damaged piston rings or cylinder bore - Change defective components.
Clogged or improperly adjusted carburetor - Adjust carburetor properly or service it.
Air filter is dirty - Service or change air filter.
Fuel pump is defective or dirty - Service or change fuel pump.
Ignition failure - Inspect ignition system and change failed components.
Damaged cylinder-head gasket - Replace the gasket as required.
Valves are stuck or burned - Clean or replace valves.
Worn or damaged push rod - Change push rod.
Cylinder block components are damaged - Change defective components.
Oil filter element is plugged (if equipped) - Change or service oil filter.
| Excessive fuel consumption |
Insufficient choke opening - Inspect choke cable and adjust as required.
Improper adjustment of carburetor main jet - Adjust it properly.
Spark plug is loose or faulty - Tighten or replace spark plug.
Valves are stuck, worn, or burned - Clean or replace valves.
Sleeve, piston, or rings are damaged - Change faulty components.
Valve clearance is not correct - Adjust to proper valve clearance.
| Engine oil consumption is too high |
Gaskets or seals may be damaged - Install new components.
Damaged valve guides or valve stems - Replace defective valves.
Piston rings are defective or worn - Install new piston rings.
Piston or cylinder liner is scuffed - Inspect piston and liner, fit new components as necessary.
Blocked breather pipe or hose - Change or service.
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