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Briggs & Stratton
Lawn & Garden Engine

Model # 121700 TO 121799 (0239-254) Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 121700-TO-121799-0239-254 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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Showing 10 of 291 parts  |
Lawn & Garden Equipment Engine Air Filter 491588
#967

Filter/base - air cleaner diagram

Lawn & garden equipment engine air filter

Part #491588

Replaced by #491588S

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Manufacturer substitution
This part replaces 491588. Substitute parts can look different from the original.
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Carburetor Kit 493762
#121

Gasket set/carburetor kit diagram

Carburetor kit

Part #493762

Replaced by #498260

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Manufacturer substitution
This part replaces 493762. Substitute parts can look different from the original.
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Carburetor 490937
#977

Gasket set/carburetor kit diagram

Carburetor

Part #490937

Replaced by #498260

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This part replaces 490937. Substitute parts can look different from the original.
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Carburetor 492495
#121A

Gasket set/carburetor kit diagram

Carburetor

Part #492495

Replaced by #498260

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This part replaces 492495. Substitute parts can look different from the original.
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Spark Plug 298809
#337

Cylinder/intake - manifold 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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Spark Plug 293918
#337B

Cylinder/intake - manifold diagram

Spark plug

Part #293918

Replaced by #796112S

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This part replaces 293918. Substitute parts can look different from the original.
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Fuel Tank Cap 493017
#957A

Seal, o-ring/lin-fuel diagram

Fuel tank cap

Part #493017

Replaced by #796577

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Fuel Cap 397974
#957

Seal, o-ring/lin-fuel diagram

Fuel cap

Part #397974

Replaced by #796577

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Manufacturer substitution
This part replaces 397974. Substitute parts can look different from the original.
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Fuel Tank Cap 494277
#957B

Seal, o-ring/lin-fuel diagram

Fuel tank cap

Part #494277

Replaced by #796577

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Manufacturer substitution
This part replaces 494277. Substitute parts can look different from the original.
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Air Cleaner Gasket 272653
Air cleaner gasket

Part #272653

Replaced by #795629

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Manufacturer substitution
This part replaces 272653. Substitute parts can look different from the original.
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Why won't my cooktop's gas burners ignite or spark?

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Repair guides for gas cooktops

How to replace a spark module on a gas cooktop

How to replace a spark module on a gas cooktop

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Time required
 30 minutes or less
How to replace a spark igniter switch on a gas cooktop

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…

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Repair difficulty
Time required
 45 minutes or less

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