Kohler CH22S Troubleshooting
| Engine Model: Kohler Command CH22S |
| Engine Type: 4-cycle V-Twin cylinder horizontal shaft air-cooled gasoline |
| Total Displacement: 38 cu.in (624 cc) |
| Rated Engine Power: 22 Hp (16.4 kW) at 3600 rpm |
| Carburetor Type: One-barrel with fixed main jet |
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| Engine starts up hard or won't start |
Gas tank is empty - Fill it up.
Wrong fuel grade - Change fuel.
There is air in the fuel system - Bleed the system.
Spark plug wire is loose or disconnected - Inspect the spark plug wire connection, replace or repair.
Spark plug is faulty - Spark plug need to be replaced.
Clogged fuel filter - Fuel filter needs to be replaced.
Faulty safety switch - Change damaged switch.
Wrong carburetor adjustment - Adjusting carburetor correctly.
Poor cylinder compression - Check cylinder block and change worn parts.
Throttle cable is adjusted improperly or worn - Replace cable or adjust properly.
Cooling fins are plugged - Need to clean or wash.
Ignition failure - Test ignition and replace failed parts.
Choke cable is defective or stuck - Clean or change the cable.
Air filter element is plugged - Service or change air filter.
Dirty or faulty fuel pump - Test fuel pump and change if necessary.
| Engine starts and stalls immediately |
Damaged spark plug - Change spark plug.
Defective or dirty carburetor - Service or change carburetor.
Defective ignition coil - Ignition coil should be replaced.
Broken or loose valve springs - Install new valve springs.
Stuck valves - Valves need to be cleaned.
Engine oil level is low - Checking oil level and add if necessary.
Engine overload - Reduce engine load.
Cooling fins are blocked - Wash or clean as required.
Carburetor is running lean - Adjust carburetor correctly.
Wrong ignition timing - Adjust ignition timing as required.
Improper valve setting - Valves needs to be set correctly.
Low octane fuel - Change gasoline.
Engine is overloaded - Reduce load.
Not enough engine oil - Need to add engine oil.
Improperly adjusted low idle speed - Correct idle settings.
Fuel pump is dirty or defective - Check fuel pump and replace if necessary.
Main bearings or crankshaft are worn out - Change or repair worn components.
Valve clearance is incorrect - Adjustment procedure required.
Damaged piston rings or cylinder bore - Replace defective components.
Clogged or improperly adjusted carburetor - Service or correctly adjust carburetor.
Plugged air filter - Service or replace air filter.
Clogged or defective fuel pump - Test fuel pump and change if necessary.
Ignition system problems - Test ignition and replace failed parts.
Cylinder head gasket is defective - Replace cylinder head gasket.
Burned or stuck valves - Clean or change valves.
Worn or defective push rod - Change push rod.
Cylinder block parts are worn out - Defective parts need to be replaced.
Plugged oil filter (if equipped) - Service or change oil filter.
| Excessive fuel consumption |
Choke didn't open fully - Adjust or change choke cable.
Carburetor main jet adjustment is improper - Adjust the carburetor main jet properly.
Loose or defective spark plug - Tighten or replace spark plug.
Valves are worn, burned or stuck - Replace or service valves.
Piston, sleeve, or rings are damaged - Change defective components.
Improper valve clearance - Adjust to proper valve clearance.
| Engine using too much oil |
Seals or gaskets are wearing excessively - Replace defective parts.
Worn valve guides and valve stems - Replace the valves.
Seized or wear piston rings - Change the piston rings as required.
Piston or cylinder liner is worn - Check liner and piston, change as required.
Breather hose or pipe is plugged - Change or service.
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