Kohler SV480 Troubleshooting
| Engine Model: Kohler Courage SV480 |
| Engine Type: 4-cycle single-cylinder vertical shaft air-cooled gasoline |
| Total Displacement: 36.4 cu.in (597 cc) |
| Rated Engine Power: 16 Hp (11.9 kW) at 3600 rpm |
| Carburetor Type: Fixed main jet |
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| Engine difficult to start or won't start |
Fuel tank is empty - Add gasoline.
Improper fuel grade - Use quality gasoline.
Clogged fuel system - Remove clogging.
Spark plug wire is loose or disconnected - Inspect spark plug wiring connection, change or repair.
Spark plug is damaged - Install new spark plug.
Clogged fuel filter - Change fuel filter.
Defective safety switch - Replace if required.
Carburetor malfunction - Check and repair as required.
Engine has low compression - Check cylinder block and replace defective parts.
Damaged or not adjusted choke cable - Adjust correctly or change the cable.
Clogged cooling fins - Need to clean or wash.
Ignition system problems - Inspect ignition system and change faulty parts.
Stuck or faulty throttle cable - Service or replace the cable.
Air filter is dirty - Service or change air filter.
Dirty or damaged fuel pump - Check fuel pump and change if required.
| Engine starts but stalls immediately |
Spark plug is faulty - Install new spark plug.
Carburetor is clogged or faulty - Service or repair carburetor.
Damaged ignition coil - Install a new ignition coil.
Valve springs are worn or loose - New valve springs need to be installed.
Valves are stuck - Valves must be cleaned.
Not enough engine oil - Fill the crankcase with engine oil.
Engine is overloaded - Reduce the load.
Air intake screen is blocked - Need to clean or wash.
Carburetor fuel mixture is too lean - Set the carburetor properly.
Improper ignition timing - Adjust ignition timing correctly.
Incorrect valve setting - Valves needs to be adjusted properly.
Stale gasoline - Use correct fuel.
Excessive engine load - Reduce engine load.
Low engine oil level - Fill the crankcase with engine oil.
Improperly adjusted low idle speed - Adjust idling as required.
Fuel pump is dirty or defective - Check fuel pump and replace if necessary.
Worn crankshaft or main bearings - Change or repair worn components.
Valve clearance is not correct - Adjust valve clearance.
Cylinder bore or piston rings are damaged - Replace faulty components.
Clogged or incorrectly adjusted carburetor - Carburetor needs to be adjusted correctly or cleaned.
Plugged air filter - Replace or clean air filter.
Fuel pump is faulty or clogged - Clean or change fuel pump.
Ignition system problems - Inspect ignition system and change faulty parts.
Cylinder head gasket is damaged - Replace the gasket as required.
Valves are stuck or burned - Clean or change valves.
Push rod is worn or defective - Push rod should be replaced.
Cylinder block parts are worn out - Defective parts need to be replaced.
Oil filter is blocked (if equipped) - Clean or replace oil filter.
| Excessive fuel consumption |
Throttle did not open fully - Replace or adjust throttle cable.
Carburetor main jet is improperly adjusted - Adjust it properly.
Spark plug is faulty or loose - Re-tighten or change the spark plug.
Worn, stuck, or burned valves - Service or replace valves.
Worn piston, rings, or sleeve - Change defective parts.
Improper valve clearance - Adjust valve clearance.
| Engine oil consumption is too high |
Defective seals or gaskets - Worn parts need to be replaced.
Worn valve guides and valve stems - Replace defective valves.
Worn or broken piston rings - Change piston rings.
Scuffed piston or cylinder liner - Inspect liner and piston, replace as necessary.
Plugged breather hose or pipe - Service or replace.
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