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Snapper
Gas Walk-Behind Mower

Model # P21400 Official Snapper lawn mower - series 0 & 1

Here are the diagrams and repair parts for Official Snapper P21400 lawn mower - series 0 & 1, 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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Showing 10 of 386 parts  |
Hcln, 1/4c G 7090372
Hcln, 1/4c g

Part #7090372

Replaced by #703251

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Manufacturer substitution
This part replaces 7090372. Substitute parts can look different from the original.
$8.07 | 
11% OFF Phone Price : $9.07
In Stock
Fln 5/16-18 7091601
Fln 5/16-18

Part #7091601

Replaced by #703409

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Manufacturer substitution
This part replaces 7091601. Substitute parts can look different from the original.
$9.27 | 
10% OFF Phone Price : $10.27
In Stock
Washer, 11/32 X 11/16 X 1/16-in 7090188
Washer, 11/32 x 11/16 x 1/16-in

Part #7090188

Replaced by #703350

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Manufacturer substitution
This part replaces 7090188. Substitute parts can look different from the original.
This item is not returnable
$7.60
In Stock
Fw, .34x.69x 7091076
#16

Side chute/adapter diagram

Fw, .34x.69x

Part #7091076

Replaced by #703350

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Manufacturer substitution
This part replaces 7091076. Substitute parts can look different from the original.
This item is not returnable
$7.60
In Stock
Key 7073406
#5

Electric start diagram

Key

Part #7073406

Replaced by #1717163SM

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Manufacturer substitution
This part replaces 7073406. Substitute parts can look different from the original.
This item is not returnable
$13.31 | 
13% OFF Phone Price : $15.31
In Stock
Rhssnb, 1/4c 7091530
#18

Accessory-thatcherizer diagram

Rhssnb, 1/4c

Part #7091530

Replaced by #703101

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Manufacturer substitution
This part replaces 7091530. Substitute parts can look different from the original.
This item is not returnable
$6.89 | 
13% OFF Phone Price : $7.89
In Stock
Blade 7026691
#14B

Cutting deck/blade/interlock diagram

Blade

Part #7026691

Replaced by #7026691BZYP

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Manufacturer substitution
This part replaces 7026691. Substitute parts can look different from the original.
This item is not returnable

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$27.69 | 
18% OFF Phone Price : $33.69
In Stock
Hflb, 5/16c 7090595
Hflb, 5/16c

Part #7090595

Replaced by #703354

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Manufacturer substitution
This part replaces 7090595. Substitute parts can look different from the original.
This item is not returnable
$8.89 | 
10% OFF Phone Price : $9.89
In Stock
Bushing 7013320
#30

Cutting deck/blade/interlock diagram

Bushing

Part #7013320

Replaced by #7013320YP

?
Manufacturer substitution
This part replaces 7013320. Substitute parts can look different from the original.
$25.43
In Stock
Support 7012616
#23

Rear wheel brackets/latches diagram

Support

Part #7012616

Replaced by #7012616YP

?
Manufacturer substitution
This part replaces 7012616. Substitute parts can look different from the original.
$8.69
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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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.

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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…

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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. …

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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…

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Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

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