Briggs & Stratton
Lawn & Garden Engine

Model # 12S905-2732-B1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 12S905-2732-B1 engine, as well as links to manuals and error code tables, if available.

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ALL PARTS
Showing 10 of 125 parts  |

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

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Lawn & Garden Equipment Engine Carburetor Float Bowl (replaces 493640, Bs-796611) 796611

#975

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Lawn & garden equipment engine carburetor float bowl (replaces 493640, bs-796611)

Part #796611

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Lawn & Garden Equipment Engine Air Filter (replaces Bs-795066) 795066

#445

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Lawn & garden equipment engine air filter (replaces bs-795066)

Part #795066

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Grip-starter Rope 795426

#60

All parts diagram

Grip-starter rope

Part #795426

Replaced by #281434S

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Manufacturer substitution
This part replaces 795426. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Carburetor Needle Valve (replaces 281144, 281178, Bs-398188) 398188

#105

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Lawn & garden equipment engine carburetor needle valve (replaces 281144, 281178, bs-398188)

Part #398188

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Lawn & Garden Equipment Engine Carburetor Float (replaces Bs-398187) 398187

#133

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

Part #398187

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Lawn & Garden Equipment Engine Air Filter Collar Gasket (replaces 273364, Bs-691894) 691894

#163

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Lawn & garden equipment engine air filter collar gasket (replaces 273364, bs-691894)

Part #691894

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Lawn & Garden Equipment Engine Spark Plug Boot (replaces 6001, 66538, 691210, Bs-66538s) 66538S

#635

All parts diagram

Lawn & garden equipment engine spark plug boot (replaces 6001, 66538, 691210, bs-66538s)

Part #66538S

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Lawn & Garden Equipment Engine Carburetor Rebuild Kit 796612

#121

All parts diagram

Lawn & garden equipment engine carburetor rebuild kit

Part #796612

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Lawn & Garden Equipment Engine Carburetor Float Bowl Gasket 796610

#137

All parts diagram

Lawn & garden equipment engine carburetor float bowl gasket

Part #796610

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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.…