Price Match GuaranteeLawn Boy Lawn Mower 80040/SERIAL: 3900001-3999999 Parts
Shop replacement repair parts for Lawn Boy Lawn Mower model 80040/SERIAL: 3900001-3999999
Briggs & Stratton Spark Plug (RJ19LM). If the engine does not start or runs poorly then the spark plug may be defective and will need replacement.
Lock nut with nylon insert.
Nylon insert locking nut. Used as part of the shear bolt assembly, as well as other locations within the equipment.
Briggs & Stratton starter gear (also called a pinion gear), 16-tooth, plastic. The starter gear engages the flyhweel to start the engine. If the teeth on the starter gear are worn out, the engine may not start.
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.
Gasket-float bowl
Fuel inlet hose connector
Quick-turn oil drain valve
Briggs and Stratton small engine electric starter kit.
Bracket, control
Oil seal, magneto side
Bearing-ball
In-line fuel filter
Spark plug boot
Plug-oil drain (3/8" standard)
Frequently Purchased Together For This Model
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