Models > 12A312

12A312 Briggs and Stratton Engine - Overview

Models starting with 12A312

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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
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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
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Pulley/Spring Assembly – Part Number: 498144
Pulley/Spring Assembly
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(2)
PartSelect #: PS8988822
Manufacturer #: 498144
$20.78
  In Stock
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Connector-Hose – Part Number: 692317
Connector-Hose
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(1)
PartSelect #: PS9074730
Manufacturer #: 692317
$7.06
  In Stock
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Gasket-Float Bowl – Part Number: 693981
Gasket-Float Bowl
PartSelect #: PS9064482
Manufacturer #: 693981
$4.99
  In Stock
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Bowl-Float – Part Number: 796611
Bowl-Float
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(1)
PartSelect #: PS9306908
Manufacturer #: 796611
$7.06
  In Stock
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Key-Flywheel – Part Number: 222698S
Key-Flywheel
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(1)
PartSelect #: PS8925657
Manufacturer #: 222698S
$4.99
  In Stock
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Fuel Tank – Part Number: 799863
Fuel Tank
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(1)
PartSelect #: PS9141053
Manufacturer #: 799863
This is a replacement fuel tank for your outdoor power equipment. It is made of black plastic and comes with the tank itself, as well as the fuel cap. The fuel tank stores fuel before it is transporte...
$98.07
  In Stock
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Plate-Pawl Friction – Part Number: 692299
Plate-Pawl Friction
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(1)
PartSelect #: PS9074726
Manufacturer #: 692299
$5.60
  In Stock
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Seal-Oil – Part Number: 299819S
Seal-Oil
PartSelect #: PS8948679
Manufacturer #: 299819S
This OEM Oil Seal is an individually sold rubber part which is attached around the axis shaft on the crankcase housing to provide a proper seal. A broken seal will lead to a leak, and the part should ...
$5.99
  In Stock
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Float-Carburetor – Part Number: 398187
Float-Carburetor
PartSelect #: PS8961149
Manufacturer #: 398187
$10.44
  In Stock
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Gasket- Exhaust – Part Number: 692237
Gasket- Exhaust
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(1)
PartSelect #: PS9294810
Manufacturer #: 692237
$5.71
  In Stock
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Common Symptoms of models starting with 12A312

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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Mistreated Briggs & Stratton 206 CC Engine on MTD Chipper
Removed tank and drained old gas.
Removed and disassembled carb. Needed new gaskets and seals, and had to clean corn syrup glaze (separated ethanol) from bowl and everywhere else with carb cleaner.
Throttle linkage was de-plating/rusty. Steel wool and WD40 got it moving again.
Cleaned spark plug electrode.
Reassembled, poured Sea Foam in the bottom of the tank and gave it a few pulls.
Let Sea Foam sit for a while, then filled the tank with Premium.
Blew white smoke for a minute then ran like new. Shredded for a while, then changed the oil.
Parts Used:
Kit-Carb Overhaul
  • Dana from HAMMOND, IN
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Nutdriver, Pliers, Screw drivers, Socket set
3 of 4 people found this instruction helpful.
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Generator would not start, Birggs & Stratton recommended to replase Gasket Exhaust.
Remove the spark suppresser, 4 face screws, 2 bottom screws and the two screws the hold the gasket. I also had to back out the top screw of the cover it blocked and prevented the removal of the gasket.
Parts Used:
Gasket- Exhaust
  • Alberto from PALMETTO BAY, FL
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Socket set
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