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Craftsman
Gas Walk-Behind Mower

Model # 917378151 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378151 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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Showing 10 of 88 parts  |
Lawn Mower 22-in Deck Mulching Blade 850973
#54

Main frame diagram

Lawn mower 22-in deck mulching blade

Part #850973

Replaced by #532406713

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Manufacturer substitution
This part replaces 850973. Substitute parts can look different from the original.
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$28.29 | 
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Lawn Mower Blade Adapter 851514
#53

Main frame diagram

Lawn mower blade adapter

Part #851514

Replaced by #581547901

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Manufacturer substitution
This part replaces 851514. Substitute parts can look different from the original.
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Washer 67725
#26

Drive assembly diagram

Washer

Part #67725

Replaced by #532067725

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Manufacturer substitution
This part replaces 67725. Substitute parts can look different from the original.
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Washer 52160
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
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Spacer 84920
#29

Main frame 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 | 
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Lawn Mower Drive Belt 88519
#35

Drive assembly diagram

Lawn mower drive belt

Part #88519

Replaced by #582944901

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Manufacturer substitution
This part replaces 88519. Substitute parts can look different from the original.
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$12.59 | 
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Washer 59289
#41

Main frame diagram

Washer

Part #59289

Replaced by #532059289

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This item is not returnable
$6.83
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Retainer Clip 85179
Retainer clip

Part #85179

Replaced by #532085179

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Manufacturer substitution
This part replaces 85179. Substitute parts can look different from the original.
This item is not returnable
$6.83
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Selector Assembly 850982
#22

Drive assembly diagram

Selector assembly

Part #850982

Replaced by #583530901

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Manufacturer substitution
This part replaces 850982. Substitute parts can look different from the original.
$39.98
In Stock
Handle Knob 63688
#13

Main frame diagram

Handle knob

Part #63688

Replaced by #532183724

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Manufacturer substitution
This part replaces 63688. Substitute parts can look different from the original.
This item is not returnable
$11.98 | 
14% OFF Phone Price : $13.98
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Symptoms for gas walk-behind mowers

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

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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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Why does my lawn mower run rough?

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

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 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 cut unevenly?

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

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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 drive cable

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

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Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

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Repair difficulty
Time required
 30 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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Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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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

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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