Briggs & Stratton
Lawn & Garden Engine

Model # 10A902-2121-E1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 10A902-2121-E1 engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 128 parts  |

Starter Rope 281464

#58

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Starter rope

Part #281464

Replaced by #697316

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Manufacturer substitution
This part replaces 281464. Substitute parts can look different from the original.
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$7.76
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In Stock
Lawn & Garden Equipment Engine Carburetor Primer Bulb (replaces 494408, 691347) 694394
Lawn & garden equipment engine carburetor primer bulb (replaces 494408, 691347)

Part #694394

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Trim Ring 691347

#973

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Trim ring

Part #691347

Replaced by #694394

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Manufacturer substitution
This part replaces 691347. Substitute parts can look different from the original.
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Elbow Spacer Plug 66538

#635

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Elbow spacer plug

Part #66538

Replaced by #66538S

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Manufacturer substitution
This part replaces 66538. Substitute parts can look different from the original.
This item is not returnable
$5.11
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Diaphragm 495770

#394

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Diaphragm

Part #495770

Replaced by #795083

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Manufacturer substitution
This part replaces 495770. Substitute parts can look different from the original.
This item is not returnable
$5.53
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Breather Grommet 67838

#529

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Breather grommet

Part #67838

Replaced by #692189

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Manufacturer substitution
This part replaces 67838. Substitute parts can look different from the original.
This item is not returnable
$7.59
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Oil Seal 299819

#3

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Oil seal

Part #299819

Replaced by #299819S

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Manufacturer substitution
This part replaces 299819. Substitute parts can look different from the original.
This item is not returnable
$7.89
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Terminal 493880

#851

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Terminal

Part #493880

Replaced by #493880S

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This part replaces 493880. Substitute parts can look different from the original.
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Screw 94731

#334

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Screw

Part #94731

Replaced by #691061

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Manufacturer substitution
This part replaces 94731. Substitute parts can look different from the original.
This item is not returnable
$5.09
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Muffler 394569

#300

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Muffler

Part #394569

Replaced by #394569S

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Manufacturer substitution
This part replaces 394569. Substitute parts can look different from the original.
This item is not returnable
$17.11
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Symptoms for gas walk-behind mowers

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

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

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

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

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…

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

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 replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

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

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 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.…