Kohler SV601 Troubleshooting
| Engine Model: Kohler Courage SV601 |
| Engine Type: 4-cycle single-cylinder vertical shaft air-cooled gasoline |
| Total Displacement: 36.4 cu.in (597 cc) |
| Rated Engine Power: 20 Hp (14.9 kW) at 3600 rpm |
| Carburetor Type: Fixed main jet |
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| Engine will not start or difficult to start |
Empty gas tank - Fill it up.
Improper fuel grade - Use correct gasoline grade.
Air in fuel tank - Bleed fuel tank.
Spark plug wire connection are damaged - Inspect spark plug wiring connection, change or repair.
Spark plug is faulty - Spark plug need to be replaced.
Dirty fuel filter - Fuel filter needs changing.
Safety contact for brake pedal defective - Install new part.
Carburetor is dirty - Wash, clean and adjust.
Poor engine compression - Check cylinder block and replace damaged components.
Damaged or incorrectly adjusted choke cable - Adjust correctly or change the cable.
Clogged cooling fins - Wash or clean as required.
Ignition system failure - Check ignition and replace faulty components.
Throttle cable is stuck or faulty - Replace or service the cable.
Air filter element is clogged - Replace or service air filter.
Clogged or defective fuel pump - Clean or change fuel pump.
| Engine stalls after starting |
Spark plug is damaged - Install new spark plug.
Carburetor is dirty or defective - Carburetor needs to be replaced or cleaned.
Damaged ignition coil - Change ignition coil as required.
Bad or broken valve springs - Change valve springs.
Stuck valves - Valves must be cleaned.
Not enough engine oil - Fill up the engine oil.
Excessive engine load - Load reducing required.
Air intake screen is plugged - Clean and wash as required.
Too lean fuel mixture in carburetor - Adjust carburetor correctly.
Incorrect ignition timing - Set the ignition timing properly.
Incorrect valve setting - Set the valves properly.
| Abnormal engine knocking or noise |
Low octane fuel - Change gasoline.
Engine overload - Load reducing required.
Lack of engine oil - Fill the crankcase with engine oil.
Incorrect low idle setting - Adjust the low idle speed.
Fuel pump is faulty or clogged - Service or change fuel pump.
Worn crankshaft or main bearings - Change defective components as required.
Valve clearance is wrong - Adjust to proper valve clearance.
Damaged cylinder bore or piston rings - Replace defective parts.
Dirty or improperly adjusted carburetor - Adjust the carburetor properly or clean it.
Clogged air filter - Service or replace air filter.
Clogged or defective fuel pump - Clean or change fuel pump.
Ignition system failure - Check ignition and replace faulty components.
Cylinder head gasket is damaged - Replace the head gasket.
Valves are stuck or burned - Service or replace valves.
Push rod is damaged or worn - Replace push rod.
Cylinder block parts are faulty - Replace defective components.
Oil filter element is clogged (if equipped) - Service or change oil filter.
| Engine using too much gasoline |
Insufficient choke opening - Inspect choke cable and adjust as required.
Improper adjustment of carburetor main jet - Adjust it properly.
Spark plug is defective or loose - Re-tighten or replace spark plug.
Burned, worn, or stuck valves - Change or service valves.
Piston, sleeve, or rings are damaged - Replace defective parts as required.
Incorrect valve clearance - Adjustment procedure required.
| Engine consuming too much oil |
Defective seals or gaskets - Replace worn parts to avoid leaks.
Valve stems or guides are damaged - Change the valves.
Stuck or worn piston rings - Change the piston rings as required.
Piston or cylinder liner is scuffed - Inspect liner and piston, fit new parts as necessary.
Breather pipe or hose is clogged - Clean or replace.
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