Official Subaru lawn & garden engine parts

Troubleshooting your Subaru lawn and garden equipment engine when it won't stay running

Fuel system problems often cause the engine to stall, so you'll need to rebuild or replace the carburetor if it won't stay running. Our fuel, ignition and compression problems video provides additional tips for troubleshooting fuel system problems.

Some engines stall if the gas cap vent gets clogged. Check your mower's gas cap and clear the vent if it has one. Tuning up the mower engine may also help keep the engine running as you mow the grass.

Common replacement parts for Subaru lawn and garden equipment engines

• Spark plug. A spark plug is the device responsible for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine. This current ignites the compressed fuel/air mixture by means of an electric spark, while containing combustion pressure within the engine.
• Air filter. The air filter prevents abrasive particles from entering the engine's cylinders, which could cause mechanical wear and oil contamination.
• Fuel filter. A fuel filter is a filter in the fuel line that screens out dirt and rust particles from the fuel. The fuel filter paper is usually integrated into a cartridge. Fuel filters used with in most internal combustion engines.
• Oil filter. An oil filter is a filter designed to remove contaminants from engine oil, transmission oil, lubricating oil or hydraulic oil.
• Flywheel key. The flywheel key is a small metal rectangle that keeps the crankshaft and flywheel aligned when you tighten the flywheel nut. To protect more expensive components from damage, the flywheel key is designed to shear if the mower blade hits an object hard enough to make the flywheel slip out of alignment with the crankshaft.