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| Home / Engines / Briggs and Stratton Engines / Briggs and Stratton 31A607 |
Briggs and Stratton 31A607 Problems
| Engine Model: Briggs and Stratton 31A607 |
| Engine Type: 4-cycle single cylinder OHV vertical shaft gasoline engine |
| Total Displacement: 30.6 cu.in (500 cc) |
| Rated Engine Power: 15.5 Hp (11.5 kW) at 3300 rpm |
| Fuel System: Float type carburetor with fixed main jet |
| Engine hard to start or won't start |
No gasoline in tank - Add gasoline.
Wrong grade of gasoline - Use quality gasoline.
Air trapped in fuel system - Bleed air.
Defective wiring connection of spark plug - Inspect spark plug wiring connection, change or repair.
Faulty spark plug - Spark plug need to be replaced.
Fuel filter is dirty - Replace fuel filter.
Brake pedal not pushed down - Push the brake pedal down.
Wrong carburetor adjustment - Adjusting carburetor correctly.
Poor compression - Inspect and replace wear parts.
Not adjusted or damaged throttle cable - Adjust properly or change the cable.
| Engine runs intermittently |
Cooling fins are plugged - Need to clean or wash.
Defective ignition - Check ignition system and replace faulty parts.
Choke cable is stuck or faulty - Replace or clean the cable.
Air filter element is clogged - Clean or change air filter.
Dirty or defective fuel pump - Inspect fuel pump and change as required.
| Engine starts and then shuts off |
Spark plug is faulty - Install new spark plug.
Carburetor is defective or clogged - Carburetor needs to be replaced or cleaned.
Damaged ignition coil - Ignition coil must be replaced.
Broken or bad valve springs - Replace valve springs.
Stuck valves - Service the valves.
| Engine overheated |
Lack of engine oil - Need to add engine oil.
Engine overload - Reduce engine load.
Air intake grill is clogged - Need to clean or wash.
Carburetor mixture is too lean - Set the carburetor correctly.
Incorrect ignition timing - Adjust ignition timing correctly.
Valve setting is wrong - Valves needs to be set correctly.
| Abnormal engine noise or knocking |
Low octane fuel - Use proper gasoline.
Engine is overloaded - Reduce engine load.
Insufficient engine oil - Fill up the engine oil.
Incorrectly adjusted low idle speed - Test and adjust.
Fuel pump is defective or dirty - Check fuel pump and change if required.
Main bearings or crankshaft wear - Need to install new components.
Valve clearance is incorrect - Adjust to proper valve clearance.
Damaged piston rings or cylinder bore - Replace defective components.
| Loss of engine power |
Dirty or incorrectly adjusted carburetor - Adjust the carburetor correctly or clean it.
Dirty air filter element - Replace or service air filter.
Clogged or damaged fuel pump - Test fuel pump and change if necessary.
Defective ignition - Check ignition and replace faulty components.
Cylinder head gasket is blown - Install new head gasket.
Valves are stuck or burned - Service or change valves.
Push rod is damaged or worn - Replace push rod.
Faulty cylinder block components - Replace defective parts as required.
Dirty oil filter element (if equipped) - Change or service oil filter.
| High fuel consumption |
Throttle opening is not full - Adjust or change throttle cable.
Improper carburetor main jet adjustment - Adjust main jet as required.
Spark plug is faulty or loose - Re-tighten or replace spark plug.
Valves are stuck, burned, or worn - Clean or replace valves.
Worn sleeve, rings, or piston - Replace faulty parts.
Valve clearance is incorrect - Adjust to proper valve clearance.
| Excessive oil consumption |
Damaged seals or gaskets - New components need to be installed.
Damaged valve stems or valve guides - Valves need to be changed.
Piston rings are seized or worn - Change piston rings.
Scored piston or cylinder liner - Inspect liner and piston, replace as necessary.
Breather hose or pipe is plugged - Replace or service.
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