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Craftsman
Gas Walk-Behind Mower

Model # 917374120 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 917374120 lawn mower, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 237 parts  |
Blade Adapter 421782
#46

Handle/engine/housing diagram

Blade adapter

Part #421782

Replaced by #581473301

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Manufacturer substitution
This part replaces 421782. Substitute parts can look different from the original.
BEST SELLER
$18.44 | 
10% OFF Phone Price : $20.44
In Stock
Drive Pawl 404845
#31

Drive control/gear case/wheels diagram

Drive pawl

Part #404845

Replaced by #532404845

?
Manufacturer substitution
This part replaces 404845. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Screw, 5/16-18 X 3/4-in 17000512
Screw, 5/16-18 x 3/4-in

Part #17000512

Replaced by #428867

?
Manufacturer substitution
This part replaces 17000512. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Mulch Door Assembly 423358
#33

Handle/engine/housing diagram

Mulch door assembly

Part #423358

Replaced by #532420019

?
Manufacturer substitution
This part replaces 423358. Substitute parts can look different from the original.
BEST SELLER
$19.98 | 
9% OFF Phone Price : $21.98
In Stock
Nut 132004
#18

Handle/engine/housing diagram

Nut

Part #132004

Replaced by #582478602

?
Manufacturer substitution
This part replaces 132004. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.64 | 
27% OFF Phone Price : $3.64
In Stock
Handle Knob 182398
#6

Handle/engine/housing diagram

Handle knob

Part #182398

Replaced by #532182398

?
Manufacturer substitution
This part replaces 182398. Substitute parts can look different from the original.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Nut.flange.5 155377
#57

Handle/engine/housing diagram

Nut.flange.5

Part #155377

Replaced by #596039201

?
Manufacturer substitution
This part replaces 155377. Substitute parts can look different from the original.
This item is not returnable
$5.11
In Stock
Rod.hinge.21 175650
#45

Handle/engine/housing diagram

Rod.hinge.21

Part #175650

Replaced by #532175650

?
Manufacturer substitution
This part replaces 175650. Substitute parts can look different from the original.
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Cover.belt.2 420771X428
#20

Drive control/gear case/wheels diagram

Cover.belt.2

Part #420771X428

Replaced by #580806901

?
Manufacturer substitution
This part replaces 420771X428. Substitute parts can look different from the original.
$26.64 | 
18% OFF Phone Price : $32.64
In Stock
Lawn Mower Clipping Deflector (replaces 419942x418) 419942X428
#38

Handle/engine/housing diagram

Lawn mower clipping deflector (replaces 419942x418)

Part #419942X428

Replaced by #532426129

?
Manufacturer substitution
This part replaces 419942X428. Substitute parts can look different from the original.
This item is not returnable
$13.31 | 
13% OFF Phone Price : $15.31
In Stock

Symptoms for gas walk-behind mowers

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

View all

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…

Read more

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. …

Read more
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…

Read more
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

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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Top questions about Sears and Sears PartsDirect

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