Briggs & Stratton
Lawn & Garden Engine

Model # 121402-0036-E2 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 121402-0036-E2 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 159 parts  |

Fuel Line (red) 691050

#187

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Fuel line (red)

Part #691050

Replaced by #791766

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Manufacturer substitution
This part replaces 691050. Substitute parts can look different from the original.
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Magneto 692605

#333

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Magneto

Part #692605

Replaced by #590454

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Manufacturer substitution
This part replaces 692605. Substitute parts can look different from the original.
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Fuel Tank Cap 694261

#957

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Fuel tank cap

Part #694261

Replaced by #795027

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Manufacturer substitution
This part replaces 694261. Substitute parts can look different from the original.
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Fuel Tank 694260

#972

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Fuel tank

Part #694260

Replaced by #799863

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Manufacturer substitution
This part replaces 694260. Substitute parts can look different from the original.
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Key 222698

#24

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Key

Part #222698

Replaced by #222698S

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Manufacturer substitution
This part replaces 222698. Substitute parts can look different from the original.
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Pre-filter 493537

#967

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Pre-filter

Part #493537

Replaced by #493537S

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Manufacturer substitution
This part replaces 493537. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Carburetor Float Bowl Gasket (replaces 280492) 693981

#137

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Lawn & garden equipment engine carburetor float bowl gasket (replaces 280492)

Part #693981

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Lawn & Garden Equipment Engine Carburetor Rebuild Kit (replaces 690032, 695156) 695157

#121

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Lawn & garden equipment engine carburetor rebuild kit (replaces 690032, 695156)

Part #695157

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Lawn & Garden Equipment Engine Carburetor Needle Valve (replaces 281144, 281178, Bs-398188) 398188

#134

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

Part #398188

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Pawl 281505

#459

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Pawl

Part #281505

Replaced by #281505S

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This part replaces 281505. Substitute parts can look different from the original.
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$5.80
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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

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What are the main components of a lawn mower?

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