Lawn & Garden Engine

Model # 81300 TO 81499 (943500 - 943999) Official Briggs & Stratton gas engine

Here are the diagrams and repair parts for Official Briggs & Stratton 81300 TO 81499 (943500 - 943999) gas engine, as well as links to manuals and error code tables, if available.

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81300 TO 81499 (943500 - 943999) Gas Engine
Spark Plug 298809

#337

All parts diagram

Spark plug

Part #298809

Replaced by #796112S

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Manufacturer substitution
This part replaces 298809. Substitute parts can look different from the original.
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$5.24
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Flywheel Key 61760

#24

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Flywheel key

Part #61760

Replaced by #222698S

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Manufacturer substitution
This part replaces 61760. Substitute parts can look different from the original.
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$3.29
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Oil Filter Plug 66768

#21

All parts diagram

Oil filter plug

Part #66768

Replaced by #281658S

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Manufacturer substitution
This part replaces 66768. Substitute parts can look different from the original.
This item is not returnable
$5.79
15% OFF Phone Price : $6.79
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Grommet Cover 66578

#529

All parts diagram

Grommet cover

Part #66578

Replaced by #692187

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Manufacturer substitution
This part replaces 66578. Substitute parts can look different from the original.
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$7.21
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Clamp 93053

#601

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Clamp

Part #93053

Replaced by #791850

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Manufacturer substitution
This part replaces 93053. Substitute parts can look different from the original.
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$4.74
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Screw 93381
Screw

Part #93381

Replaced by #691061

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Manufacturer substitution
This part replaces 93381. Substitute parts can look different from the original.
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$5.09
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Magneto Arm 298502

#333

All parts diagram

Magneto arm

Part #298502

Replaced by #591420

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Manufacturer substitution
This part replaces 298502. Substitute parts can look different from the original.
$67.99
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Clutch Str 298310

#66

All parts diagram

Clutch str

Part #298310

Replaced by #399671

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Manufacturer substitution
This part replaces 298310. Substitute parts can look different from the original.
$40.49
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Gskt Vlv Cv 27549

#9

All parts diagram

Gskt vlv cv

Part #27549

Replaced by #27549S

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Manufacturer substitution
This part replaces 27549. Substitute parts can look different from the original.
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$5.03
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Screw 93294
Screw

Part #93294

Replaced by #692198

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Manufacturer substitution
This part replaces 93294. Substitute parts can look different from the original.
This item is not returnable
$8.59
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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.…