Models > 120502-0354-E1

120502-0354-E1 Briggs and Stratton Engine - Overview

Sections of the 120502-0354-E1

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Blower HousingShrouds Controls Electrical Exhaust System Flywheel Governor Spring Ignition Rewind Starter Diagram and Parts List for Briggs and Stratton Engine
Blower HousingShrouds Controls Electrical Exhaust System Flywheel Governor Spring Ignition Rewind Starter
Cam Crankshaft Cylinder Engine Sump Lubrication Piston Group Valves Diagram and Parts List for Briggs and Stratton Engine
Cam Crankshaft Cylinder Engine Sump Lubrication Piston Group Valves
Carburetor Fuel Supply Diagram and Parts List for Briggs and Stratton Engine
Carburetor Fuel Supply

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Engine – Part Number: 120502-0354-E1
Engine
This part number matches the current model number 120502-0354-E1
PartSelect #: PS9883969
Manufacturer #: 120502-0354-E1
  No Longer Available
Keep searches simple, eg. "belt" or "pump".
Plug-Spark – Part Number: 796112S
Plug-Spark
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(1)
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
Carburetor Overhaul Kit – Part Number: 498260
Carburetor Overhaul Kit
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(4)
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
Starter Pawl-Ratchet – Part Number: 281505S
Starter Pawl-Ratchet
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 Gasket Set – Part Number: 590508
Engine Gasket Set
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(1)
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...
$37.66
  In Stock
Kit-Needle/Seat – Part Number: 398188
Kit-Needle/Seat
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(1)
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...
$6.91
  In Stock
Gasket-Crankcase – Part Number: 692232
Gasket-Crankcase
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(1)
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
  In Stock
Pulley/Spring Assembly – Part Number: 498144
Pulley/Spring Assembly
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★★★★★
(2)
PartSelect #: PS8988822
Manufacturer #: 498144
$20.78
  In Stock
Gasket-Float Bowl – Part Number: 693981
Gasket-Float Bowl
PartSelect #: PS9064482
Manufacturer #: 693981
$4.99
  In Stock
Bowl-Float – Part Number: 796611
Bowl-Float
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★★★★★
(1)
PartSelect #: PS9306908
Manufacturer #: 796611
$7.06
  In Stock
Key-Flywheel – Part Number: 222698S
Key-Flywheel
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(1)
PartSelect #: PS8925657
Manufacturer #: 222698S
$4.99
  In Stock
Plate-Pawl Friction – Part Number: 692299
Plate-Pawl Friction
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(1)
PartSelect #: PS9074726
Manufacturer #: 692299
$5.60
  In Stock
Gasket-Cylinder Head – Part Number: 692249
Gasket-Cylinder Head
PartSelect #: PS9064879
Manufacturer #: 692249
$9.15
  In Stock
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Common Symptoms of the 120502-0354-E1

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Will Not Start
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Fixing Fixing Fixing
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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:
Engine Gasket Set Ring Set-Standard
  • Robert from TEGA CAY, SC
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    More than 2 hours
4 of 5 people found this instruction helpful.
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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:
Engine Gasket Set
  • Dustin from BANGOR, ME
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    More than 2 hours
  • Tools:
    Socket set, Wrench set
3 of 7 people found this instruction helpful.
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