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104777-0112-01 Briggs and Stratton Engine - Overview

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Plug-spark – Part Number: 491055S
$6.40
Special Order
Plug-spark
★★★★★
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(2)
Part #491055S
This spark plug is designed to provide reliable ignition and efficient fuel combustion in small engine applications. Built for consistent performance and durability, it helps maintain smooth operation, steady power output, and easier starting. Ideal for routine maintenance or replacement, it supports dependable engine performance in lawn and garden equipment, generators, and similar outdoor power machines.
Key-flywheel – Part Number: 222698S
$6.40
In Stock
Key-flywheel
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(1)
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.
Filter-oil – Part Number: 492932S
$15.13
In Stock
Filter-oil
Part #492932S
This short-style engine oil filter is designed to remove harmful contaminants from the oil while maintaining proper lubrication in pressure-lubricated small engines. Built with high-efficiency filtration media and internal safety features to support consistent oil flow, it helps reduce engine wear and protect internal components. Ideal for routine maintenance, it supports reliable performance and helps extend engine life during regular operation.
Gear-pinion – Part Number: 695708
$7.88
In Stock
Gear-pinion
Part #695708
This is a manufacturer approved starter pinion gear designed for use with lawn and garden equipment engines. This Starter pinion gear is attach to the starter clutch drive and engages the flywheel to start the engine. It is made out of Plastic and Aluminum and it is Sold Individually.
Armature-Magneto – Part Number: 590454
$66.77
On Order
Armature-Magneto
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Part #590454
This genuine replacement magneto is designed for Briggs & Stratton engines used in Toro lawn mowers. It plays a vital role in the ignition system by generating the electrical current needed to fire the spark plug. Made from high-quality materials, this part is sold individually. Note: The spark plug boot is sold separately. To replace the magneto, begin by removing the housing or covers from your mower. Next, remove the spark plug and bind the cylinder to prevent it from turning. Disconnect the ignition wires and remove the old ignition coil. Install the new magneto, carefully setting the correct air gap between the coil and the flywheel. Once installed, reassemble the unit and test for proper operation. A screwdriver set is recommended for this repair.
Hose-vacuum – Part Number: 791766
$10.60
On Order
Hose-vacuum
Part #791766
This genuine part is sourced directly from the original equipment manufacturer. It is specially designed for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. The purpose of this hose is to transfer vacuum from the engine. Unfortunately, over time the material may wear out and begin to crack eventually requiring a replacement. Make sure to check the diagrams of your model for the exact location and the correct installation of this part. Note, this item includes one durable rubber hose and two metal clamps to secure it.
Adjuster-rocker Arm – Part Number: 691986
$15.83
In Stock
Adjuster-rocker Arm
Part #691986
This rocker arm adjuster, or valve lash adjuster, is a genuine OEM replacement part used in lawn tractors. It is approximately one inch long and made of steel. It is responsible for adjusting the clearance between the rocker arm and valve stem, which allows the valves to open and close as needed. The adjuster will need to be replaced if the threads are stripped, or if it is cracked, or worn down. Remove the spark plug wire to prevent accidental starting and remove the valve cover from the engine to access the rocker arm. Detach the rocker arm and unthread the faulty adjuster. Screw the new adjuster into the rocker arm and use a feeler gauge to set the correct intake clearance. Reinstall the arm into the engine and return the valve cover to complete the repair.
Clamp-hose – Part Number: 791850
$6.40
In Stock
Clamp-hose
Part #791850
This is a genuine manufacturer-sourced part which is designed for use on lawn and garden equipment. It is an identical replacement for a missing or a damaged clamp that is used to secure the hose. Keep in mind this high-quality product is made of durable metal and is sold individually. Please make sure to check the appropriate diagrams for your model for the correct location and application of this hardware.
Seal-oil – Part Number: 399781S
$10.31
In Stock
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.
Switch-stop – Part Number: 692310
$9.52
In Stock
Switch-stop
Part #692310
The stop switch is made of plastic and metal and helps to turn off the device. This is an authentic replacement part that is sourced from the original manufacturer for use with engines, generators, snowthrowers, and blower-vacuums made by Toro, Murray, and Briggs & Stratton. This part is available individually. During the installation process, a wrench set and wire stripping pliers might be needed to replace this part. It may become bent or broken and will need to be replaced.
Puller-flywheel – Part Number: 19203
$39.43
In Stock
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 during 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.
Knob-air Cleaner – Part Number: 691668
$8.73
In Stock
Knob-air Cleaner
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(2)
Part #691668
This is a genuine manufacturer-sourced component which is specially designed for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. It is an identical replacement for a missing or faulty nut that was originally installed on a new unit, please make sure to check the appropriate diagrams of your model for the correct location and application of this item. Keep in mind this high-quality part is made of durable plastic and is sold individually.

Common Symptoms of the 104777-0112-01

How this model fails, and the parts that fix it.