12C802 (0633-01) Briggs and Stratton Engine - Overview

Sections of the 12C802

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Pin-piston/std – Part Number: 298909
Pin-piston/std
PartSelect #: PS8942667
Manufacturer #: 298909
$15.95
  Special Order
Seal-o Ring – Part Number: 270344S
Seal-o Ring
PartSelect #: PS8936675
Manufacturer #: 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 se...
$5.95
  In Stock
Order within the next 11 hrs and your part ships today!
Rep Man-1 Cyl L-hd – Part Number: 270962
Rep Man-1 Cyl L-hd
PartSelect #: PS8937789
Manufacturer #: 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 ea...
$51.95
  Special Order
Key-flywheel – Part Number: 222698S
Key-flywheel
PartSelect #: PS8925657
Manufacturer #: 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 Plier...
$5.95
  In Stock
Order within the next 11 hrs and your part ships today!
Washer-sealing – Part Number: 271716
Washer-sealing
PartSelect #: PS8940580
Manufacturer #: 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 drippin...
$6.95
  In Stock
Order within the next 11 hrs and your part ships today!
Shaft-Throttle – Part Number: 493267
Shaft-Throttle
PartSelect #: PS8982180
Manufacturer #: 493267
$30.95
  Special Order
18oz 30w 4 Cycle Oil – Part Number: 100005
18oz 30w 4 Cycle Oil
PartSelect #: PS8817222
Manufacturer #: 100005
This bottle of oil can be used in over 150 different types of machinery. It is most commonly used for pressure washers and generators from manufacturers such as Briggs and Stratton and Troy-Bilt. This...
$8.95
  In Stock
Order within the next 11 hrs and your part ships today!
Screw – Part Number: 690912
Screw
PartSelect #: PS9064499
Manufacturer #: 690912
It is a genuine OEM sourced replacement screw which is specially designed for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. Please refer to the appropriate diag...
$6.95
  Special Order
Screw – Part Number: 690940
Screw
PartSelect #: PS9064505
Manufacturer #: 690940
This replacement screw is a high quality hardware that is commonly utilized on Briggs and Stratton engines commonly installed on Toro lawn and garden equipment. It has multiple applications depending ...
$6.95
  Special Order
Guard-rewind – Part Number: 691919
Guard-rewind
PartSelect #: PS9064416
Manufacturer #: 691919
This is an OEM part sourced directly from the manufacturer. The rewind guard is commonly found on small engines from Briggs & Stratton. This part is made of high-quality plastic, and is used to cove...
$49.95
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Seal-o Ring – Part Number: 691031
Seal-o Ring
PartSelect #: PS9063625
Manufacturer #: 691031
This authentic item is supplied directly from the original equipment manufacturer for use with engines, outboard motors, portable generators, snowthrowers, and lawn mowers made by Briggs & Stratton an...
$9.95
  Special Order
Key-woodruff – Part Number: 690979
Key-woodruff
PartSelect #: PS9063568
Manufacturer #: 690979
This timing key is an OEM direct from Briggs & Stratton. The metal component is compatible with many small engines, and is sold individually. The key secures the shaft in the crankshaft. A wrench is o...
$5.95
  Special Order

Questions And Answers for 12C802

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Common Symptoms of the 12C802

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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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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
starter rewind cord broke
I found the model number of the Briggs & Stratton engine on the inside of the engine housing. Ordered a new starter-rewind unit, as the old cord broke and the thing was well worn. The instructions were clear enough, but to get the old starter off I had to drill out four rivets, which just spin around when you try. I used a hacksaw, chisel, pliers, whatever worked on each rivet; this took a while. When they were finally removed, the new starter pull unit was relatively easy to install with the small nuts and bolts provided. On the Yard Machines log splitter, putting back the engine housing is quite tricky; you have to jostle the thing into place, get the pull handle above the cover and line up the bolt holes.
Parts Used:
Engine Recoil Starter Assembly
  • Seikai from MARICOPA, CA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
15 of 21 people found this instruction helpful.
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Mower body was die cast and in good condition. Engine was burning oil.
Removed engine, no specialty tools required. Honed the cylinder, and lapped the valves. Tip on compressing valve spring for reassembly; compress springs with you finger and tie them with 2 zip ties, cut the zip ties after installing the keepers. Repainted the mower deck and engine. It runs and looks like new. My Toro is a 1999 model .
Parts Used:
Engine Gasket Set Ring Set-std
  • Robert from TEGA CAY, SC
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    More than 2 hours
5 of 8 people found this instruction helpful.
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Leaking gaskets
All the gaskets needed to be replaced on the Briggs 6.75 flathead I was rebuilding. I ported and polished the ports and shaved the eyebrow between the valves and the piston. The gasket set was a perfect fit. It is a monster now. It doesn't sound like a lawnmower engine anymore
Parts Used:
Engine Gasket Set
  • Dustin from BANGOR, ME
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    More than 2 hours
  • Tools:
    Socket set, Wrench set
4 of 10 people found this instruction helpful.
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