Briggs & Stratton
Lawn & Garden Engine

Model # 121700 TO 121799 (3101,3102,3106) Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 121700-TO-121799-310131023106 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 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 Primer 496115
#387

Filter/base - air cleaner diagram

Carburetor primer

Part #496115

Replaced by #694395

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Manufacturer substitution
This part replaces 496115. Substitute parts can look different from the original.
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$5.24
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Carburetor 492495
#121A

Gasket set/carburetor kit diagram

Carburetor

Part #492495

Replaced by #498260

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Manufacturer substitution
This part replaces 492495. 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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Manufacturer substitution
This part replaces 490937. 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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Fuel Pipe 492790
#187

Seal, o-ring/lin-fuel diagram

Fuel pipe

Part #492790

Replaced by #791766

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Manufacturer substitution
This part replaces 492790. Substitute parts can look different from the original.
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Spark Plug 492167
#337C

Cylinder/intake - manifold diagram

Spark plug

Part #492167

Replaced by #J19LM

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Manufacturer substitution
This part replaces 492167. Substitute parts can look different from the original.
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Lawn & Garden Equipment Engine Carburetor Float (replaces Bs-398187) 398187
Lawn & garden equipment engine carburetor float (replaces bs-398187)

Part #398187

This item is not returnable
$11.96
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Oil Cap 495264
#523

Seal, o-ring/lin-fuel diagram

Oil cap

Part #495264

Replaced by #499621

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Manufacturer substitution
This part replaces 495264. Substitute parts can look different from the original.
This item is not returnable
$24.80
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Oil Fill Cap 493950
#523A

Seal, o-ring/lin-fuel diagram

Oil fill cap

Part #493950

Replaced by #499621

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Manufacturer substitution
This part replaces 493950. Substitute parts can look different from the original.
This item is not returnable
$24.80
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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
Time required
 15 minutes or less
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

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