Parts for Mtd 4P90MUD: 4P90mud Crankshaft & Crankcase Cover Parts

Engine won't start after sudden stop? A sheared flywheel key breaks the connection between crankshaft and flywheel. Simple DIY repair.

Oil fill tube assembly for lawn mower engines. Installs at engine oil fill opening. Replace if cracked, broken, or missing to prevent leaks.

This is an M6 x 35mm bolt used in lawn mower assemblies. It serves as a fastener for securing various components such as brake assemblies and other mechanical parts. Replace this bolt if it is stripped, corroded, sheared off, or missing during a repair.

This voltage regulator controls the electrical output from the engine's charging system, ensuring a consistent voltage is supplied to the battery and electrical components. It prevents overcharging or undercharging of the battery. Replace this part if the battery repeatedly dies, overcharges, or if electrical components behave erratically during operation.

Engine sump filter for lawn mowers and tractors. Filters oil to protect engine components from debris. Replace during oil changes or if oil appears dirty. Verify fit with your model number.

Replace your engine governor gear and shaft if your engine runs too fast or surges. Fits lawn tractors, snow throwers, and walk-behind mowers. DIY-friendly.

Removes contaminants from engine oil to protect internal parts. Replace regularly to maintain engine performance. Confirm fit with your model number.

Seals the engine sump to prevent oil leaks in lawn mowers and snow blowers. Replace if you notice oil pooling or leaking. Verify fit with your model number.

Oil drain plug assembly for lawn mower and tractor engines. Replace if stripped, cracked, or leaking. Installs in engine oil pan for secure drainage.