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| Home / Engines / Kohler Engines / Kohler CH13S |
Kohler Command CH13S Problems
| Engine Model: Kohler Command CH13S |
| Engine Type: 4-cycle 1-cylinder horizontal shaft air-cooled gasoline engine |
| Total Displacement: 24.3 cu.in (398 cc) |
| Rated Engine Power: 13 Hp (9.8 kW) at 3600 rpm |
| Fuel System: Walbro or Nikki carburetor with adjustable jet or fixed jet |
| Engine will not start or starts up hard |
Gas tank is empty - Add fuel.
Improper fuel grade - Use quality gasoline.
Air in fuel tank - Bleed fuel tank.
Disconnected or loose spark plug wire - Inspect the spark plug wire connection, replace or repair.
Defective spark plug - Change spark plug.
Dirty fuel filter - Install new filter.
Faulty safety switch - Change damaged switch.
Carburetor settings incorrect - Adjusting as required.
Low compression - Check and replace worn parts.
Improperly adjusted or worn throttle cable - Adjust properly or change the cable.
| Rough engine running |
Cooling fins are plugged - Need to wash or clean.
Ignition system failure - Check ignition and replace faulty components.
Faulty or stuck choke cable - Replace or clean the cable.
Air filter element is clogged - Replace or service air filter.
Clogged or defective fuel pump - Clean or replace fuel pump.
| Engine starts but stops suddenly |
Defective spark plug - Spark plug need to be replaced.
Carburetor is defective or dirty - Carburetor needs to be replaced or cleaned.
Ignition coil is defective - Change ignition coil as required.
Valve springs are damaged or weak - Install new valve springs.
Valves sticking - Valves must be cleaned.
| Engine overheated |
Engine oil level is low - Fill the crankcase with engine oil.
Engine is overloaded - Load reducing is recommended.
Air intake grill is clogged - Need to wash or clean.
Carburetor fuel mixture is too lean - Adjust carburetor properly.
Bad ignition timing - Adjust ignition timing correctly.
Incorrect valve setting - Valves needs to be set correctly.
| Engine knocking or noise |
Low octane gasoline - Change gasoline.
Engine is under excessive load - Load reducing is recommended.
Low engine oil level - Add oil to the engine crankcase.
Incorrectly adjusted low idle speed - Adjust idle speed.
Dirty or faulty fuel pump - Service or replace fuel pump.
Main bearings or crankshaft failure - Repair or replace defective parts.
Incorrect valve clearance - Check and adjust.
Piston rings or cylinder bore are worn - Replace defective parts.
| Engine power is too low |
Carburetor is improperly adjusted or dirty - Clean or properly adjust carburetor.
Clogged air filter - Replace or clean air filter.
Clogged or damaged fuel pump - Service or replace fuel pump.
Defective ignition - Check ignition and replace faulty components.
Blown cylinder head gasket - Change cylinder head gasket.
Burned or stuck valves - Replace or service valves.
Push rod is worn or damaged - Push rod should be replaced.
Damaged cylinder block parts - Replace defective components.
Oil filter is dirty (if equipped) - Change or clean oil filter.
| Engine using too much gasoline |
Throttle does not open well - Inspect throttle cable and adjust it.
Incorrect carburetor main jet adjustment - Adjust it properly.
Loose or faulty spark plug - Re-tighten or replace spark plug.
Burned, worn, or stuck valves - Service or replace valves.
Worn rings, piston, or sleeve - Replace defective components.
Excessive valve clearance - Need to adjust valve clearance.
| Excessive oil consumption |
Gaskets or seals are excessively worn - Replace to repair leaks.
Damaged valve guides or valve stems - Change the valves.
Piston rings are stuck or worn - Replace piston rings.
Damaged cylinder liner or piston - Check liner and piston, change as required.
Clogged breather hose or pipe - Change or service.
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