Briggs & Stratton
Lawn & Garden Engine

Model # 121432-0112-E1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 121432-0112-E1 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 150 parts  |

Filter 691710
#535

Fuel tank diagram

Filter

Part #691710

Replaced by #491588S

?
Manufacturer substitution
This part replaces 691710. Substitute parts can look different from the original.
BEST SELLER

Get free shipping with Automatic Reorder

$9.24
10% OFF Phone Price : $10.24
In Stock
Fuel Line 298049
#187

Fuel tank diagram

Fuel line

Part #298049

Replaced by #791766

?
Manufacturer substitution
This part replaces 298049. Substitute parts can look different from the original.
BEST SELLER
$9.59
9% OFF Phone Price : $10.59
In Stock
Lawn & Garden Equipment Engine Recoil Starter Pulley (replaces 263074, 281504, Bs-498144) 498144
#56

Rewind starter diagram

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 Carburetor Fuel Inlet Fitting (replaces 493496, Bs-692317) 692317
#186

Carburetor assembly diagram

Lawn & garden equipment engine carburetor fuel inlet fitting (replaces 493496, bs-692317)

Part #692317

BEST SELLER
$8.02
11% OFF Phone Price : $9.02
In Stock
Grip 691930
#60A

Rewind starter diagram

Grip

Part #691930

Replaced by #281434S

?
Manufacturer substitution
This part replaces 691930. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$6.34
14% OFF Phone Price : $7.34
In Stock
Lawn & Garden Equipment Engine Carburetor Float (replaces Bs-398187) 398187
#133

Carburetor assembly diagram

Lawn & garden equipment engine carburetor float (replaces bs-398187)

Part #398187

This item is not returnable
$11.96
14% OFF Phone Price : $13.96
In Stock
Lawn & Garden Equipment Engine Recoil Starter Pawl Friction Plate (replaces 281503, Bs-692299) 692299
#456

Rewind starter diagram

Lawn & garden equipment engine recoil starter pawl friction plate (replaces 281503, bs-692299)

Part #692299

This item is not returnable
$7.89
11% OFF Phone Price : $8.89
In Stock
Lawn & Garden Equipment Engine Hex Screw (replaces 690960, 692126, 697551, 94744, Bs-691108) 691108
Lawn & garden equipment engine hex screw (replaces 690960, 692126, 697551, 94744, bs-691108)

Part #691108

This item is not returnable
$5.09
16% OFF Phone Price : $6.09
In Stock
Shut Off Valve 692586
#958

Fuel tank diagram

Shut off valve

Part #692586

Replaced by #698180

?
Manufacturer substitution
This part replaces 692586. Substitute parts can look different from the original.
This item is not returnable
$19.94
9% OFF Phone Price : $21.94
In Stock
Fuel Line 692601
#187A

Fuel tank diagram

Fuel line

Part #692601

Replaced by #791867

?
Manufacturer substitution
This part replaces 692601. Substitute parts can look different from the original.
This item is not returnable
$26.89
18% OFF Phone Price : $32.89
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…