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Craftsman
Gas Walk-Behind Mower

Model # 917973981 Official Craftsman 20" power-propelled lawn mower with rear bagger

Here are the diagrams and repair parts for Official Craftsman 917973981 20" power-propelled lawn mower with rear bagger, 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 102 parts  |
Keps Nut STD541431
#30

Replacement parts diagram

Keps nut

Part #STD541431

Replaced by #596040501

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Manufacturer substitution
This part replaces STD541431. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.11
In Stock
Washer 52160
#39

Replacement parts diagram

Washer

Part #52160

Replaced by #596040101

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Manufacturer substitution
This part replaces 52160. Substitute parts can look different from the original.
This item is not returnable
$5.11
In Stock
Spacer 84920
#46

Replacement parts diagram

Spacer

Part #84920

Replaced by #532401629

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Manufacturer substitution
This part replaces 84920. Substitute parts can look different from the original.
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Shoulder Bolt 84921
#40

Replacement parts diagram

Shoulder bolt

Part #84921

Replaced by #532174719

?
Manufacturer substitution
This part replaces 84921. Substitute parts can look different from the original.
This item is not returnable
$13.69
In Stock
Screw 55187
#31

Replacement parts diagram

Screw

Part #55187

Replaced by #532428867

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Manufacturer substitution
This part replaces 55187. Substitute parts can look different from the original.
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Decal 78850
#10

Replacement parts diagram

Decal

Part #78850

Replaced by #539913010

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Manufacturer substitution
This part replaces 78850. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Hex Screw 650837
#32

Drive assembly diagram

Hex screw

Part #650837

Replaced by #650837

?
Manufacturer substitution
This part replaces 650837. Substitute parts can look different from the original.
This item is not returnable
$2.16
In Stock
Washer 62335
#41

Replacement parts diagram

Washer

Part #62335

Replaced by #532062335

?
Manufacturer substitution
This part replaces 62335. Substitute parts can look different from the original.
$13.69
In Stock
Lawn Mower Retainer Clip, 4-pack 55015
#38

Replacement parts diagram

Lawn mower retainer clip, 4-pack

Part #55015

Replaced by #582934801

?
Manufacturer substitution
This part replaces 55015. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Washer 74232
#35

Drive assembly diagram

Washer

Part #74232

Replaced by #819171912

?
Manufacturer substitution
This part replaces 74232. Substitute parts can look different from the original.
This item is not returnable
$6.83
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…

Read more
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

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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