Kohler CH16S Troubleshooting
| Engine Model: Kohler Command CH16S |
| Engine Type: 4-cycle single-cylinder horizontal shaft air-cooled gasoline |
| Total Displacement: 26 cu.in (426 cc) |
| Rated Engine Power: 16 Hp (11.9 kW) at 3600 rpm |
| Carburetor Type: Adjustable or fixed main jet |
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| Engine won't start or hard to start |
No fuel in fuel tank - Fill fuel up.
Low-quality gasoline - Use quality gasoline.
Dirt and debris in fuel system - Remove debris and dirt.
Spark plug wiring connection is damaged - Check the spark plug wire connection, repair or replace.
Spark plug is damaged - Replace spark plug.
Clogged fuel filter - Fuel filter needs changing.
Brake pedal not pushed down - Push the brake pedal down.
Carburetor settings incorrect - Adjusting as required.
Low compression - Check and replace worn parts.
Choke cable is worn or not adjusted properly - Adjust correctly or replace the cable.
Cooling fins are clogged - Clean and wash as required.
Ignition system failure - Check ignition and replace faulty components.
Defective or stuck throttle cable - Service or change the cable.
Dirty air filter element - Service or change air filter.
Dirty or faulty fuel pump - Clean or replace fuel pump.
| Engine starts and stalls immediately |
Spark plug is defective - Change spark plug.
Carburetor is defective or dirty - Replace or service carburetor.
Ignition coil is damaged - Install a new ignition coil.
Loose or worn valve springs - Install new valve springs.
Stuck valves - Clean the valves.
Lack of engine oil - Check and refill engine oil.
Engine overloaded - Reduce the load.
Cooling fins are plugged - Clean and wash as required.
Too lean carburetor mixture - Adjust carburetor correctly.
Improper ignition timing - Ignition timing needs to be adjusted correctly.
Improper valve setting - Adjust valves correctly.
Low octane fuel - Use correct gasoline.
Excessive engine load - Load reducing required.
Not enough engine oil - Checking oil level and add if necessary.
Improperly adjusted low idle speed - Adjust idle speed.
Fuel pump is damaged or dirty - Inspect fuel pump and change as required.
Main bearings or crankshaft failure - Change defective components as required.
Incorrect valve clearance - Adjust valve clearance.
Cylinder bore or piston rings are worn - Replace faulty components.
Improperly or clogged carburetor - Carburetor needs to be adjusted correctly or cleaned.
Plugged air filter - Service or change air filter.
Fuel pump is dirty or defective - Test fuel pump and replace if necessary.
Ignition system is defective - Check ignition system and replace faulty parts.
Cylinder head gasket is damaged - Install new cylinder head gasket.
Valves are stuck or burned - Service or change valves.
Worn or defective push rod - Push rod should be replaced.
Worn cylinder block components - Replace defective parts as required.
Clogged oil filter (if equipped) - Replace or service oil filter.
| Excessive fuel consumption |
Choke did not open fully - Change or adjust choke cable.
Improper carburetor main jet adjustment - Adjust the carburetor main jet properly.
Spark plug is defective or loose - Spark plug need to be replaced or tightened.
Valves are stuck, burned, or worn - Service or change valves.
Worn rings, piston, or sleeve - Replace faulty parts as required.
Excessive valve clearance - Check and adjust.
| Engine consuming too much oil |
Gaskets or seals may be damaged - Replace to repair leaks.
Damaged valve stems or valve guides - Valves replacement required.
Stuck or defective piston rings - Piston rings need to be replaced.
Cylinder liner or piston is scored - Check liner and piston, change as required.
Breather pipe or hose is blocked - Service or change.
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