Shop replacement repair parts for Lawn Boy Lawn Mower model 81242

Briggs & Stratton in-line fuel filter. The filter screen is on the large side of the housing. The port on the large side goes to the fuel tank while the port on the small side of the housing goes to the carburetor.

Briggs & Stratton flywheel key. The flywheel key aligns the flywheel in the correct position on the crankshaft. If the engine stops suddenly due to hitting a hard object, the flywheel key shears in half to prevent damage to the engine. If the flywheel key is broken, the engine won't start.

Ignition coil (or magneto armature). The ignition coil sends voltage to the spark plug while the engine is running. If the ignition coil is defective, the engine may not start.

Briggs & Stratton Spark Plug (QC12YC)

Briggs & Stratton carburetor (RUIXING) with fuel shut off solenoid. If the carburetor is clogged, the engine won't get enough fuel. As a result, the engine may not start or may run rough. The carburetor can often be cleaned or rebuilt, but may sometimes need to be replaced.

Filter-pre cleaner

Carburetor rebuild kit. Briggs & Stratton recently eliminated carburetor nozzles from various kits as a running change. Carburetor nozzles are still available for purchase by using your model/type number if needed.

Carburetor rebuild kit. Briggs & Stratton recently eliminated carburetor nozzles from various kits as a running change. Carburetor nozzles are still available for purchase by using your model/type number if needed.

Genuine OEM Briggs & Stratton 790905 choke shaft kit.