120502-0354-E1 Briggs and Stratton Engine - Overview
Sections of the 120502-0354-E1
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Lawn Mower Spark Plug
PartSelect #: PS9140427
Manufacturer #: 796112S
This part is the replacement spark plug for your engine. It measures approximately 2.5 inches by 1 inch. The spark plug creates the spark that ignites fuel in your engine during the combustion process...
$4.99
In Stock

Lawn Mower Carburetor Overhaul Kit
PartSelect #: PS8984098
Manufacturer #: 498260
This is a replacement carburetor overhaul kit for your small engine. The carburetor is essential to the overall performance of your engine, and the carb can get clogged up over time for a variety of r...
$17.96
In Stock

Engine Ratchet Pawl
PartSelect #: PS8942598
Manufacturer #: 281505S
The manufacturer-approved Ratchet Pawl (Starter Pawl) comes in a set of two (2). This part attaches inside the recoil assembly, and is used to engage the flywheel. if broken due to wear/damage it will...
$3.99
In Stock

Engine Float Valve Kit
PartSelect #: PS8963322
Manufacturer #: 398188
This needle and seat kit, also known as a float valve, is found in many types of liquid-fueled lawn equipment, such as carburetors. The valve regulates the flow of fuel into the float bowl. The needle...
$6.97
In Stock

Engine Gasket Set
PartSelect #: PS9036317
Manufacturer #: 590508
This genuine OEM engine gasket set is sourced directly from the manufacturer and includes the gaskets needed to seal the components in a gas-powered engine. This set ensures proper fit and performance...
$40.29
In Stock

Engine Crankcase Gasket
PartSelect #: PS9066140
Manufacturer #: 692232
This part is the replacement gasket for the crankcase on your engine. The gasket helps to create a seal on the crankcase and prevent leaks. If you notice that your engine is not running at peak perfor...
$6.39
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Engine Pulley Spring Assembly
PartSelect #: PS8988822
Manufacturer #: 498144
Upgrade your equipment with this reliable Pulley/Spring Assembly from Briggs and Stratton. Known for their superior quality, Briggs and Stratton parts are designed to help prolong the life of your mac...
$20.78
In Stock

Engine Oil Seal
PartSelect #: PS8948679
Manufacturer #: 299819S
This OEM Oil Seal is an individually sold rubber part which is attached around the axis shaft on the crankcase housing to provide a proper seal. A broken seal will lead to a leak, and the part should ...
$5.99
In Stock
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Engine
This part number matches the current model number 120502-0354-E1
PartSelect #: PS9883969
Manufacturer #: 120502-0354-E1
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Common Symptoms of the 120502-0354-E1
[Viewing 3 of 3]Will Not Start
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Engine will not idle
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Cannot pull starter cord out or engine will not turn over
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Mower body was die cast and in good condition. Engine was burning oil.
Removed engine, no specialty tools required. Honed the cylinder, and lapped the valves. Tip on compressing valve spring for reassembly; compress springs with you finger and tie them with 2 zip ties, cut the zip ties after installing the keepers. Repainted the mower deck and engine. It runs and looks like new. My Toro is a 1999 model .
Parts Used:
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Robert from TEGA CAY, SC
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Difficulty Level:Really Easy
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Total Repair Time:More than 2 hours
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Leaking gaskets
All the gaskets needed to be replaced on the Briggs 6.75 flathead I was rebuilding. I ported and polished the ports and shaved the eyebrow between the valves and the piston. The gasket set was a perfect fit. It is a monster now. It doesn't sound like a lawnmower engine anymore
Parts Used:
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Dustin from BANGOR, ME
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Difficulty Level:A Bit Difficult
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Total Repair Time:More than 2 hours
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Tools:Socket set, Wrench set
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