12AV Craftsman Lawn Mower - Overview

Models starting with 12AV

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Sealant-liquid – Part Number: 100106
$24.95
Special Order
Sealant-liquid
Part #100106
It is a genuine manufacturer-supplied item that is made for use with Briggs and Stratton engines that are commonly installed on a variety of lawn and garden equipment. This is a special liquid sealant which creates a tight fit between connected components. Refer to the owner's manual or a repair guide to ensure the correct application. Note, this high-quality sealant-liquid is sold as an individual item.
Puller-flywheel – Part Number: 19203
$33.95
Special Order
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.
Key-flywheel – Part Number: 222698S
$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.
Rope-starter – Part Number: 591108
$14.95
Special Order
Rope-starter
Part #591108
Seal-oil – Part Number: 391483S
$10.95
Special Order
Seal-oil
Part #391483S
This is an authentic replacement part manufactured for use with small engines. This oil seal keeps oil inside the crankcase, and seals the shaft. It is recommended to replace the crankcase gasket when servicing the case, the gasket is available separately. The oil seal is sold individually.
Seal-oil – Part Number: 399781S
$13.95
Special Order
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.
Pin-piston/std – Part Number: 298909
$15.95
Special Order
Pin-piston/std
Part #298909
Seal-o Ring – Part Number: 270344S
$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.
Lawn Mower Starter Rope Grip – Part Number: 281434S
$6.95
In Stock
Seal-o Ring – Part Number: 691876
$9.95
Special Order
Seal-o Ring
Part #691876
Gasket-cylinder Head – Part Number: 796475
$20.95
Special Order
Gasket-cylinder Head
Part #796475
This is an authentic replacement part manufactured for use with small engines. The cylinder head gasket forms a seal between the cylinder head, and cylinder. It is recommended to replace gaskets when servicing the cylinder head to ensure a good seal when it is reassembled. This cylinder head gasket is sold individually.
Retainer-valve – Part Number: 692194
$10.95
Special Order
Retainer-valve
Part #692194
This is an authentic replacement part manufactured for use with Briggs & Stratton small engines. The special retainer is commonly used as spacing between the head of the valve and the valve spring. The retainer is available as an individual replacement part, please see model diagram for associative parts.

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I replaced the deck on my Craftsman Lawn Mower, and needed a new water nozzle and some screws to hold the front wheel assembly on.
2 of 4 people found this instruction helpful.
  • Dan from LAKEWOOD, OH
  • A Bit Difficult
  • 30 - 60 mins
  • Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
I removed the rear wheels, then I removed the blade, then the motor, then the front wheel assembly. The bolts holding the front wheel assembly were rusted and rounded trying to remove them, so I cut them out with a grinder. Afterwards I removed the remainder of the screw with a pair of pliers. I also removed the Water jet cleanout nozz le, found it was cracked, ordered the part from PartSelect, along with the screws needed to attach the front wheel assembly. I cleaned the remaining parts and re installed them onto the new deck. First, I installed the front wheel assembly, then the motor, then sat the mower upright, installed the blade, then took the rear wheel assembly and aligned it and fastened it to the deck. Last piece was the water nozzle. I placed it in the recess for it, and fastened it with the bolt. Then I tested the mower, and it worked without issue. Afterwards I used the new clean out port to rinse the underside of the deck, and it worked well.
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Broken adjustment lever
2 of 7 people found this instruction helpful.
  • Tim from SPOKANE VLY, WA
  • A Bit Difficult
  • 30 - 60 mins
  • Screw drivers
Placed on stands to hold mower up, then removed wheels and clips, then placed new axle in place and replaced clips and wheels.
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Lost wing knob and nut that holds the handle onto the mower
5 of 25 people found this instruction helpful.
  • Paul from NIXA, MO
  • Very Difficult
  • More than 2 hours
Can't do the repair. You sent me the two wing knobs I ordered, but no nuts. No one sells the nuts. I've driven all over trying to find them. Wasted my money and a lot of time. Zip ties are holding the handle on. I sent an email to customer service asking for the nuts, never heard a word from anyone. Another great example of how no t to run a business.
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