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12Z Briggs and Stratton Engine - Overview
Models starting with 12Z
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$33.95
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Puller-flywheel
Part #19203
This flywheel puller is designed for servicing larger small engines by safely removing tightly seated flywheels without stressing the crankshaft or damaging ignition components. Constructed from heavy-duty steel and engineered to apply even pulling force, it makes accessing the magneto, crankshaft key, or ignition system straightforward d...Read moreuring repairs or overhauls. Built to OEM specifications for durability and precise fit, it’s a reliable tool for maintaining lawn mowers, generators, and pressure washers with compatible engines.
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$11.95
In Stock
Kit-needle/seat
Part #398188
Genuine manufacturer approved carburetor needle valve for lawn and garden equipment engines. This item includes the seat. The needle valve opens and closes to control the flow of fuel into the carburetor. Make sure to disconnect the spark plug wire and drain all gasoline from the carburetor and fuel tank before starting a repair.
$7.95
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Retainer-Gov Shaft
Part #690340
$88.95
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Engine Recoil Starter Assembly
Part #497680
This authentic OEM starter assembly is designed for use with lawn and garden engines and is sourced directly from the original manufacturer to ensure quality and compatibility. The assembly includes a durable plastic shroud/housing, starter pulley, recoil spring, pull rope with grip, and the necessary hardware for installation. It functio...Read morens as the primary mechanism for manually cranking and starting the engine. To complete the replacement, you’ll need a wrench. Simply remove the four screws and nuts securing the old starter assembly, then install the new one using the included hardware. This item is sold as a complete individual assembly.
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$31.95
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Jet-main
Part #497466
This is a genuine Briggs & Stratton replacement part. The main jet is designed by the manufacturer for use in engines such as those found in blowers and lawnmowers. This part is made of metal, and comes with a plastic gasket. It is used to control the flow of fuel in the carburetor when the engine is running. You may require a wrench when replacing this item.
$11.95
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Filter-a/c Foam
Part #493537S
Genuine Manufacturer Sourced replacement part used on a variety of Briggs and Stratton Engines. This filter adds a second layer of protection against airborne-dirt particle ingestion. This is a Foam Pre-Cleaner which is Sold Individually. Please note a Paper Filter and a Cover are both Sold Separately.
$7.95
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Cap-oil Fill
Part #281658S
This manufacturer approved replacement part is specially produced for use with Briggs and Stratton engines commonly installed on Toro lawn and garden equipment. It is utilized to keep the oil in the tank. Please note this durable plastic oil fill cap is sold individually.
$7.95
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Spring-friction
Part #691855
$13.95
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Seal-oil
Part #399781S
This is an authentic replacement part manufactured for use with small engines. Seals can deteriorate overtime, and it is recommended to replace worn seals when servicing an engine. This seal is the lower seal in the engine's sump, the seal is sold individually.
$5.95
In Stock
Key-flywheel
Part #222698S
This is a Genuine OEM replacement part used on a variety of Lawn and Garden equipment. The key helps to secure Flywheel in place. This is a Metal Key and it is Sold Individually. You would need Pliers to replace this item.
$40.95
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Shim-Endplay
Part #220624
$51.95
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Rep Man-1 Cyl L-hd
Part #270962
This is a genuine item that is supplied directly from the original equipment manufacturer for Briggs and Stratton engines commonly installed on lawn and garden equipment. The repair manual contains easy to follow step-by-step instructions, diagnostic methods and other useful information to keep your engine running at peak levels. It is th...Read moree manual that is being utilized by authorized Briggs & Stratton service centers. Keep in mind this high-quality item is sold individually.
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Common Symptoms of models starting with 12Z
How this model fails, and the parts that fix it.
Will Not Start
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Cannot pull starter cord out or engine will not turn over
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Engine will not idle
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See how others fixed this model. Time, tools, difficulty, and steps that lead to victory!
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Search repair tips from other customers using simple keywords like "replace", "fit", "remove", "inspect". DIY doesn't mean you have to do it alone!
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Mower was submerged in Hurricane Matthew
25 of 51 people
found this instruction helpful.
Total disassemble, clean out water and any rust. hone cylinder, wire brush where needed,reassemble with new rings,gaskets and seals and lucas oil product. Started on second pull. Mowed lawn. If you have never done this sort of work before, probably should not attempt.
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