Briggs & Stratton
Lawn & Garden Engine

Model # 31A507-2391-B1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 31A507-2391-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 163 parts  |

Lawn & Garden Equipment Engine Starter Drive Assembly 693699

#510

All parts diagram

Lawn & garden equipment engine starter drive assembly

Part #693699

Replaced by #593934

?
Manufacturer substitution
This part replaces 693699. Substitute parts can look different from the original.
BEST SELLER
$137.37
8% OFF Phone Price : $149.37
In Stock
Lawn & Garden Equipment Engine Starter Motor 693551

#309

All parts diagram

Lawn & garden equipment engine starter motor

Part #693551

Replaced by #593934

?
Manufacturer substitution
This part replaces 693551. Substitute parts can look different from the original.
BEST SELLER
$137.37
8% OFF Phone Price : $149.37
In Stock
Filter 796031

#445

All parts diagram

Filter

Part #796031

Replaced by #594201

?
Manufacturer substitution
This part replaces 796031. Substitute parts can look different from the original.
BEST SELLER
$18.84
10% OFF Phone Price : $20.84
In Stock
Lawn & Garden Equipment Engine Exhaust Gasket (replaces 272293, 91309, Bs-692236) 692236

#883

All parts diagram

Lawn & garden equipment engine exhaust gasket (replaces 272293, 91309, bs-692236)

Part #692236

BEST SELLER
$6.56
13% OFF Phone Price : $7.56
In Stock
Lawn & Garden Equipment Engine Rocker Arm Cover Gasket (replaces 272475, 692285) 272475S

#1022

All parts diagram

Lawn & garden equipment engine rocker arm cover gasket (replaces 272475, 692285)

Part #272475S

BEST SELLER
$7.56
12% OFF Phone Price : $8.56
In Stock
Lawn & Garden Equipment Engine Crankcase Gasket 697110

#12

All parts diagram

Lawn & garden equipment engine crankcase gasket

Part #697110

BEST SELLER
$9.02
10% OFF Phone Price : $10.02
In Stock
Lawn & Garden Equipment Engine Camshaft 793880

#46

All parts diagram

Lawn & garden equipment engine camshaft

Part #793880

Replaced by #84005207

?
Manufacturer substitution
This part replaces 793880. Substitute parts can look different from the original.
BEST SELLER
$85.51
7% OFF Phone Price : $91.51
In Stock
Snowblower Carburetor 796109

#125

All parts diagram

Snowblower carburetor

Part #796109

Replaced by #594593

?
Manufacturer substitution
This part replaces 796109. Substitute parts can look different from the original.
BEST SELLER
$138.70
8% OFF Phone Price : $150.70
In Stock
Lawn & Garden Equipment Engine Flywheel Assembly (replaces 697853, 699708, 794436, 796083) 796201

#1005

All parts diagram

Lawn & garden equipment engine flywheel assembly (replaces 697853, 699708, 794436, 796083)

Part #796201

BEST SELLER
$34.37
15% OFF Phone Price : $40.37
In Stock
Lawn & Garden Equipment Engine Carburetor Rebuild Kit (replaces 698787, 790032, Bs-699521, Bs-796184) 796184

#121

All parts diagram

Lawn & garden equipment engine carburetor rebuild kit (replaces 698787, 790032, bs-699521, bs-796184)

Part #796184

BEST SELLER
$61.84
9% OFF Phone Price : $67.84
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.…