Tecumseh OH160 Troubleshooting
| Engine Model: Tecumseh OH160 |
| Engine Type: 4-cycle 1-cylinder overhead valve air-cooled gasoline |
| Total Displacement: 27.6 cu.in (453 cc) |
| Rated Engine Power: 16 Hp (11.9 kW) at 3600 rpm |
| Fuel System Type: Float carburetor with adjustable jet |
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| Engine starts up hard or will not start |
No fuel in fuel tank - Add fuel.
Improper fuel grade - Change gasoline.
Air in fuel system - Bleed fuel system.
Defective spark plug wire connection - Inspect the spark plug wire connection, replace or repair.
Spark plug is damaged - Change spark plug.
Clogged fuel filter - Change fuel filter.
Brake pedal not depressed - Press the brake pedal.
Carburetor malfunction - Check and repair as required.
Bad engine compression - Inspect cylinder block and replace worn components.
Incorrectly adjusted or damaged throttle cable - Adjust correctly or change the cable.
Cooling fins are plugged - Wash or clean as required.
Ignition system failure - Inspect ignition system and change failed components.
Choke cable is faulty or stuck - Change or service the cable.
Air filter is blocked - Replace or clean air filter.
Fuel pump is dirty or defective - Test fuel pump and change if necessary.
| Engine starts but then shuts off |
Spark plug is damaged - Install new spark plug.
Faulty or dirty carburetor - Clean or change carburetor.
Defective ignition coil - Ignition coil must be replaced.
Bad or broken valve springs - Replace valve springs.
Valves sticking - Service the valves.
Lack of engine oil - Fill the crankcase with engine oil.
Engine is running overloaded - Reduce the load.
Cooling fins are plugged - Wash or clean as required.
Carburetor mixture is too lean - Adjust carburetor correctly.
Wrong ignition timing - Adjust ignition timing correctly.
Wrong valve setting - Adjust valves as required.
Stale or low octane fuel - Change fuel.
Engine overload - Reduce the load.
Lack of engine oil - Fill the crankcase with engine oil.
Incorrectly adjusted low idle speed - Correct the settings.
Clogged or damaged fuel pump - Service or replace fuel pump.
Crankshaft or main bearings failure - Replace crankshaft or bearings.
Valve clearance is not correct - Check and adjust.
Piston rings or cylinder bore are worn - Replace defective parts.
Carburetor is incorrectly adjusted or dirty - Clean or correctly adjust carburetor.
Dirty air filter element - Change or clean air filter.
Dirty or damaged fuel pump - Service or change fuel pump.
Ignition system malfunction - Check ignition and replace faulty components.
Blown cylinder head gasket - Replace cylinder head gasket.
Burned or stuck valves - Service or replace valves.
Worn or defective push rod - Replace push rod.
Damaged cylinder block components - Replace defective parts.
Dirty oil filter element (if equipped) - Replace or clean oil filter.
| Excessive fuel consumption |
Throttle not fully open - Check throttle cable and adjust as required.
Carburetor main jet adjustment is incorrect - Adjust main jet as required.
Loose or defective spark plug - Re-tighten or replace spark plug.
Valves are stuck, burned, or worn - Service or change valves.
Worn sleeve, rings, or piston - Change defective parts.
Valve clearance is improper - Need to adjust valve clearance.
Worn gaskets or seals - Replace worn parts to avoid leaks.
Damaged valve stems or valve guides - Replace the valves.
Damaged or seized piston rings - Install new piston rings.
Cylinder liner or piston is scored - Check piston and liner, install new parts as required.
Blocked breather pipe or hose - Clean or change.
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