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Craftsman
Gas Walk-Behind Mower

Model # 917378251 Official Craftsman 22" lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378251 22" lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 117 parts  |
Selector Knob 77865
Selector knob

Part #77865

Replaced by #532701037

?
Manufacturer substitution
This part replaces 77865. 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
Shoulder Bolt 84921
#46

Main frame 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
Bolt 58714
#3

Main frame diagram

Bolt

Part #58714

Replaced by #532183724

?
Manufacturer substitution
This part replaces 58714. Substitute parts can look different from the original.
This item is not returnable
$11.98 | 
14% OFF Phone Price : $13.98
In Stock
Walk-behind Lawn Mower Engine Pulley 85543
#57

Main frame diagram

Walk-behind lawn mower engine pulley

Part #85543

Replaced by #582940301

?
Manufacturer substitution
This part replaces 85543. Substitute parts can look different from the original.
$22.26
In Stock
Lawn Tractor Transaxle Wheel Axle Oil Seal 57072
#4

Gear case assembly no. 86625 diagram

Lawn tractor transaxle wheel axle oil seal

Part #57072

Replaced by #532057072

?
Manufacturer substitution
This part replaces 57072. Substitute parts can look different from the original.
$8.54
In Stock
Clip 87716
#10

Drive assembly diagram

Clip

Part #87716

Replaced by #582940401

?
Manufacturer substitution
This part replaces 87716. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Spring 83632
#40

Drive assembly diagram

Spring

Part #83632

Replaced by #532137090

?
Manufacturer substitution
This part replaces 83632. Substitute parts can look different from the original.
$8.54
In Stock
Lawn Mower Wheel 87748
#35

Main frame diagram

Lawn mower wheel

Part #87748

Replaced by #582943001

?
Manufacturer substitution
This part replaces 87748. Substitute parts can look different from the original.
$39.98
In Stock
Walk-behind Lawn Mower Handle Knob 87692
#4

Main frame diagram

Walk-behind lawn mower handle knob

Part #87692

Replaced by #532087692

?
Manufacturer substitution
This part replaces 87692. Substitute parts can look different from the original.
$15.40
In Stock
Adj Brkt Lh 86931
#40

Main frame diagram

Adj brkt lh

Part #86931

Replaced by #582968701

?
Manufacturer substitution
This part replaces 86931. 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. …

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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