Briggs & Stratton
Lawn & Garden Engine

Model # 121S12-0112-F1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 121S12-0112-F1 engine, as well as links to manuals and error code tables, if available.

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ALL PARTS
Showing 10 of 120 parts  |

Lawn & Garden Equipment Engine Recoil Starter Rope (replaces 692259) 697316

#58

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Lawn & garden equipment engine recoil starter rope (replaces 692259)

Part #697316

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Lawn & Garden Equipment Engine Spark Plug 692051

#337

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Lawn & garden equipment engine spark plug

Part #692051

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Lawn & Garden Equipment Engine Recoil Starter Handle (replaces 281434, 691930, 795426, Bs-281434s) 281434S

#60

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Lawn & garden equipment engine recoil starter handle (replaces 281434, 691930, 795426, bs-281434s)

Part #281434S

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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 Washer 271716

#276

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Lawn & garden equipment engine washer

Part #271716

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$6.19
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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 Fuel Line Clamp 791850

#601

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Lawn & garden equipment engine fuel line clamp

Part #791850

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Lawn & Garden Equipment Engine Crankshaft Oil Seal (replaces 399781, 691989, Bs-399781s) 399781S

#20

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Lawn & garden equipment engine crankshaft oil seal (replaces 399781, 691989, bs-399781s)

Part #399781S

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Lawn & Garden Equipment Engine Oil Drain Plug (replaces 94720, 94880, Bs-691680) 691680

#15

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Lawn & garden equipment engine oil drain plug (replaces 94720, 94880, bs-691680)

Part #691680

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Lawn & Garden Equipment Engine Carburetor (replaces Bs-796608) 796608

#125

All parts diagram

Lawn & garden equipment engine carburetor (replaces bs-796608)

Part #796608

$105.30
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Symptoms for gas line trimmers

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Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

Repair difficulty
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How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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