Kohler CH13S Troubleshooting
| Engine Model: Kohler Command CH13S |
| Engine Type: 4-cycle single-cylinder horizontal 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: Adjustable or fixed main jet |
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| Engine will not start or difficult to start |
No gasoline in tank - Fill fuel up.
Wrong fuel grade - Use correct fuel grade.
Fuel system clogged - Repair or replace.
Damaged spark plug wiring connection - Check the spark plug wire connection, repair or replace.
Defective spark plug - Spark plug need to be replaced.
Clogged fuel filter - Change fuel filter.
Faulty safety switch - Change damaged switch.
Carburetor settings incorrect - Adjusting as required.
Low engine compression - Inspect cylinder block and change defective components.
Throttle cable is adjusted incorrectly or damaged - Replace cable or adjust properly.
Air intake screen is plugged - Need to clean or wash.
Defective ignition system - Check ignition system and replace faulty parts.
Stuck or defective choke cable - Clean or replace the cable.
Clogged air filter - Replace or service air filter.
Fuel pump is faulty or clogged - Clean or install new fuel pump.
| Engine stalls after starting |
Faulty spark plug - Change spark plug as required.
Faulty or clogged carburetor - Service or replace carburetor.
Damaged ignition coil - Replace ignition coil as necessary.
Valve springs are worn or loose - New valve springs need to be installed.
Valves are stuck - Clean the valves.
Engine oil level is low - Fill the crankcase with engine oil.
Engine overload - Load reducing is recommended.
Air intake screen is blocked - Need to wash or clean.
Carburetor fuel mixture is too lean - Make the correct settings.
Improper ignition timing - Set the ignition timing correctly.
Valve setting is improper - Set the valves correctly.
Stale gasoline - Change fuel.
Engine overload - Reduce the load.
Engine oil level is insufficient - Need to add engine oil.
Low idle speed setting is not correct - Adjust idle speed.
Dirty or defective fuel pump - Clean or install new fuel pump.
Main bearings or crankshaft wear - Replace crankshaft or bearings.
Valve clearance is wrong - Adjust to proper valve clearance.
Cylinder bore or piston rings are damaged - Change faulty components.
Dirty or improperly adjusted carburetor - Adjust carburetor properly or service it.
Clogged air filter - Service or replace air filter.
Fuel pump is faulty or clogged - Test fuel pump and replace if necessary.
Defective ignition - Check ignition and replace faulty components.
Cylinder head gasket is worn - Replace the gasket as required.
Valves are stuck or burned - Replace or service valves.
Damaged or worn push rod - Install a new push rod.
Cylinder block parts are damaged - Defective components need to be replaced.
Oil filter is dirty (if equipped) - Service or change oil filter.
| Engine uses too much fuel |
Insufficient throttle opening - Adjust or replace throttle cable.
Improper adjustment of carburetor main jet - Adjust it properly.
Faulty or loose spark plug - Change or re-tighten spark plug.
Valves are worn, burned or stuck - Replace or service valves.
Worn piston, rings, or sleeve - Replace faulty parts.
Valve clearance is improper - Check and adjust.
| Engine oil consumption is too high |
Seals or gaskets are wearing excessively - Install new components.
Damaged valve stems or valve guides - Replace the valves.
Stuck or worn piston rings - Install new piston rings.
Damaged piston or cylinder liner - Check piston and liner, change as required.
Blocked breather pipe or hose - Service or change.
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