Briggs & Stratton
Lawn & Garden Engine

Model # 12S502-1102-B1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 12S502-1102-B1 engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 146 parts  |

Lawn & Garden Equipment Engine Carburetor Primer Bulb (replaces 496115, Bs-694395) 694395

#976

All parts diagram

Lawn & garden equipment engine carburetor primer bulb (replaces 496115, bs-694395)

Part #694395

BEST SELLER
This item is not returnable
$5.24
16% OFF Phone Price : $6.24
In Stock
Lawn & Garden Equipment Engine Recoil Starter Rope (replaces 692259) 697316

#58

All parts diagram

Lawn & garden equipment engine recoil starter rope (replaces 692259)

Part #697316

BEST SELLER
$7.50
12% OFF Phone Price : $8.50
In Stock
Lawn & Garden Equipment Engine Fuel Line (replaces 1734994sm, 327290ma, 691050, 7012638yp, 7032016yp, 7032956yp, 7041996yp, 7076272yp, 7077351yp, 791866, 798512, 809322, 809499) 791766

#187

All parts diagram

Lawn & garden equipment engine fuel line (replaces 1734994sm, 327290ma, 691050, 7012638yp, 7032016yp, 7032956yp, 7041996yp, 7076272yp, 7077351yp, 791866, 798512, 809322, 809499)

Part #791766

BEST SELLER
$9.59
9% OFF Phone Price : $10.59
In Stock
Lawn & Garden Equipment Engine Air Filter (replaces 392672, 393365, 49245, 690610, Bs-697029) 697029

#445

All parts diagram

Lawn & garden equipment engine air filter (replaces 392672, 393365, 49245, 690610, bs-697029)

Part #697029

BEST SELLER
$18.87
10% OFF Phone Price : $20.87
In Stock
Lawn & Garden Equipment Engine Spark Plug 692051

#337

All parts diagram

Lawn & garden equipment engine spark plug

Part #692051

BEST SELLER
$8.59
10% OFF Phone Price : $9.59
In Stock
Lawn & Garden Equipment Engine Fuel Tank (replaces 693377, Bs-699374) 699374

#972

All parts diagram

Lawn & garden equipment engine fuel tank (replaces 693377, bs-699374)

Part #699374

BEST SELLER
$58.46
9% OFF Phone Price : $64.46
In Stock
Lawn & Garden Equipment Engine Recoil Starter Pulley (replaces 263074, 281504, Bs-498144) 498144
Lawn & garden equipment engine recoil starter pulley (replaces 263074, 281504, bs-498144)

Part #498144

BEST SELLER
$23.76
20% OFF Phone Price : $29.76
In Stock
Lawn & Garden Equipment Engine Pre-filter (replaces 273356, 281165, 690245, Bs-273356s) 273356S

#967

All parts diagram

Lawn & garden equipment engine pre-filter (replaces 273356, 281165, 690245, bs-273356s)

Part #273356S

BEST SELLER
$9.51
10% OFF Phone Price : $10.51
In Stock
Lawn & Garden Equipment Engine Recoil Starter (replaces Bs-497680) 497680

#608

All parts diagram

Lawn & garden equipment engine recoil starter (replaces bs-497680)

Part #497680

BEST SELLER
$93.54
6% OFF Phone Price : $99.54
In Stock
Lawn & Garden Equipment Engine Recoil Starter Handle (replaces 281434, 691930, 795426, Bs-281434s) 281434S

#60

All parts diagram

Lawn & garden equipment engine recoil starter handle (replaces 281434, 691930, 795426, bs-281434s)

Part #281434S

BEST SELLER
This item is not returnable
$6.34
14% OFF Phone Price : $7.34
In Stock

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your lawn & garden engines

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…