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Snapper
Gas Walk-Behind Mower

Model # NR21501 Official Snapper lawn mower - series 0 & 1

Here are the diagrams and repair parts for Official Snapper NR21501 lawn mower - series 0 & 1, 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 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
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
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

?
Manufacturer substitution
This part replaces 7090188. Substitute parts can look different from the original.
This item is not returnable
$7.60
In Stock
Rhsnb, 5/16c 7090316
#35

Drive system self-propelled diagram

Rhsnb, 5/16c

Part #7090316

The manufacturer no longer makes this part, and there's no substitute part

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
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
Hflb, 5/16c 7090595
Hflb, 5/16c

Part #7090595

Replaced by #703354

?
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
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

Get free shipping with Automatic Reorder

$27.69 | 
18% OFF Phone Price : $33.69
In Stock
Slw, .318x.5 7090187
Slw, .318x.5

Part #7090187

The manufacturer no longer makes this part, and there's no substitute part

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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