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126L05-0125-F1 Briggs and Stratton Engine - Overview
Diagrams for 126L05-0125-F1
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$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.
$30.95
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Shaft-Throttle
Part #493267
$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.
$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.
$15.95
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Deflector-muffler
Part #393760
This is a genuine Briggs & Stratton and Toro replacement part for use in engines, lawn mowers, and lawn tractors. The muffler deflector is made out of metal. A wrench may be needed during the replacement of this item. It will need to be replaced if it breaks. This item is sold individually.
$27.95
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Deflector-Muffler
Part #396548
$5.95
In Stock
Seal-o Ring
Part #270344S
This authentic OEM replacement part fits a variety of Toro and Briggs & Stratton engines. An O ring is used to retain pressure between rigid parts. Its flexible material allows it to create a tight seal. Many different sizes of O ring are used in these engines; consult manual to be sure of correct placement. 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.
$6.95
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Washer-sealing
Part #271716
This authentic OEM sealing washer is designed for your lawn equipment to create a tight seal within the carburetor body, preventing fuel or air leaks. If you notice any signs of leaks, such as dripping fuel or hissing sounds, it may indicate a faulty or worn-out sealing washer. Additionally, you might be experiencing engine performance is...Read moresues like rough idling or difficulty starting. To replace the sealing washer, ensure that the machine is off and that the engine has cooled down. Remove the air breather cover and the filter itself, following the instructions provided in your user manual to access the carburetor. Depending on your specific equipment model, you may need to detach the springs from the carburetor choke mechanism, disconnect the fuel line and fuel tank, remove the choke lever, and detach the air breather base. Once you have located the carburetor, carefully unthread the main jet from the bottom of the carburetor bowl. Finally, slide off the old sealing washer, ensuring you take note of its positioning for accurate replacement. Please note that this sealing washer is sold individually.
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$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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$5.95
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Starter Pawl-Ratchet
Part #281505S
This Genuine OEM ratchet pawl is a critical component designed to engage the recoil starting system with the engine, ensuring smooth and reliable starts. Manufactured from durable plastic, this replacement part is engineered to match the original specifications for a precise fit and dependable performance. Over time, a worn pawl can cause...Read more the recoil mechanism to slip, making it difficult to start the engine. Replacing it restores proper function and helps extend the life of your equipment. Sold individually, this part is ideal for routine maintenance or repair of compatible outdoor power tools.
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Common Symptoms of the 126L05-0125-F1
How this model fails, and the parts that fix it.
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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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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replaced gasket that go's between the air cleaner housing and carb. cleaned housing and reinstalled with new air filter
12 of 14 people
found this instruction helpful.
Also replaced fuel tank , the built in fuel shut off started leaking , had to replace the tank. Ordered a new one Briggs & Stratton original equipment fit perfect . This is a 25 year old Briggs & Stratton lawn mower 3.5 HP, Runs perfect, starts by the 2nd crank every time. First time I ever had to spend money on it since I bought it new i
... Read more
n 1991
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Smelled Gas Leaks
8 of 11 people
found this instruction helpful.
Inspected/removed fuel lines and found signs of leak. Removed and inspected carburetor and found that seals and gaskets were toast. Replaced said seals with ones from the kit that fit and replaced fuel lines.
Would be nice to have a fuel line kit with the big fuel line (tank to carb) and the little one (carb to engine) together ... Read more with all the necessary clamps.
Would be nice to have a fuel line kit with the big fuel line (tank to carb) and the little one (carb to engine) together ... Read more with all the necessary clamps.
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