Briggs & Stratton
Lawn & Garden Engine

Model # 422437-0721-01 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 422437-0721-01 engine, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 187 parts  |

Filter 394358
#67

Air cleaner-carburetor diagram

Filter

Part #394358

Replaced by #394358S

?
Manufacturer substitution
This part replaces 394358. Substitute parts can look different from the original.
BEST SELLER
$6.91
13% OFF Phone Price : $7.91
In Stock
Plug 394539
#40

Cylinder, crankshaft&engine base diagram

Plug

Part #394539

Replaced by #796112S

?
Manufacturer substitution
This part replaces 394539. Substitute parts can look different from the original.
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This item is not returnable
$3.37
23% OFF Phone Price : $4.37
In Stock
Element 271271
#52

Air cleaner-carburetor diagram

Element

Part #271271

Replaced by #272490S

?
Manufacturer substitution
This part replaces 271271. Substitute parts can look different from the original.
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$4.50
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Gear 394348
#37

Cylinder, crankshaft&engine base diagram

Gear

Part #394348

Replaced by #793338

?
Manufacturer substitution
This part replaces 394348. Substitute parts can look different from the original.
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$34.42
13% OFF Phone Price : $39.42
In Stock
Key 222698
#57

Cylinder, crankshaft&engine base diagram

Key

Part #222698

Replaced by #222698S

?
Manufacturer substitution
This part replaces 222698. Substitute parts can look different from the original.
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This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Start Mower 394808
#18

Starter motor group diagram

Start mower

Part #394808

Replaced by #497596

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Manufacturer substitution
This part replaces 394808. Substitute parts can look different from the original.
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$140.27
7% OFF Phone Price : $150.27
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Carburetor 394502

#NI

All parts diagram

Carburetor

Part #394502

Replaced by #694056

?
Manufacturer substitution
This part replaces 394502. Substitute parts can look different from the original.
BEST SELLER
$40.98
11% OFF Phone Price : $45.98
In Stock
Elbow Spacer Plug 66538
#55

Cylinder, crankshaft&engine base diagram

Elbow spacer plug

Part #66538

Replaced by #66538S

?
Manufacturer substitution
This part replaces 66538. Substitute parts can look different from the original.
This item is not returnable
$5.11
16% OFF Phone Price : $6.11
In Stock
Terminal Cable 221798
#3

Starter motor group diagram

Terminal cable

Part #221798

Replaced by #493880S

?
Manufacturer substitution
This part replaces 221798. Substitute parts can look different from the original.
This item is not returnable
$4.75
17% OFF Phone Price : $5.75
In Stock
Screw 93381
#4

Starter motor group diagram

Screw

Part #93381

Replaced by #691061

?
Manufacturer substitution
This part replaces 93381. Substitute parts can look different from the original.
This item is not returnable
$5.09
16% OFF Phone Price : $6.09
In Stock

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