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Craftsman
Gas Walk-Behind Mower

Model # 917378491 Official Craftsman gas walk-behind lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378491 gas walk-behind lawn mower, as well as links to manuals and error code tables, if available.

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

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 250 parts  |
Handle Knob 181254
#6

Engine/housing/handle diagram

Handle knob

Part #181254

Replaced by #532185577

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Manufacturer substitution
This part replaces 181254. Substitute parts can look different from the original.
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Premium Blade 176135
#47

Engine/housing/handle diagram

Premium blade

Part #176135

Replaced by #532406706

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Manufacturer substitution
This part replaces 176135. Substitute parts can look different from the original.
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Handle Bolt 131959
#5

Engine/housing/handle diagram

Handle bolt

Part #131959

Replaced by #532191574

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Manufacturer substitution
This part replaces 131959. Substitute parts can look different from the original.
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Lock Nut 73800500
#33

Engine/housing/handle diagram

Lock nut

Part #73800500

Replaced by #596040501

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Manufacturer substitution
This part replaces 73800500. Substitute parts can look different from the original.
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Selector Knob 180912
Selector knob

Part #180912

Replaced by #532701037

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Manufacturer substitution
This part replaces 180912. Substitute parts can look different from the original.
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Return Spring 182226
#40

Wheels/tires/bag/gearcase/v-belt diagram

Return spring

Part #182226

Replaced by #532406558

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Manufacturer substitution
This part replaces 182226. Substitute parts can look different from the original.
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Lawn & Garden Equipment Lock Nut 73800400
#38

Wheels/tires/bag/gearcase/v-belt diagram

Lawn & garden equipment lock nut

Part #73800400

Replaced by #582478602

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Manufacturer substitution
This part replaces 73800400. Substitute parts can look different from the original.
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Nut 132004
#92

Engine/housing/handle diagram

Nut

Part #132004

Replaced by #582478602

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Manufacturer substitution
This part replaces 132004. Substitute parts can look different from the original.
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Cable.mzr.60 182755
#4

Engine/housing/handle diagram

Cable.mzr.60

Part #182755

Replaced by #532183567

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Manufacturer substitution
This part replaces 182755. Substitute parts can look different from the original.
$19.98 | 
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Blade Hex Bolt 179617
#50

Engine/housing/handle diagram

Blade hex bolt

Part #179617

Replaced by #532179617

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Manufacturer substitution
This part replaces 179617. Substitute parts can look different from the original.
This item is not returnable

Get free shipping with Automatic Reorder

$6.64 | 
13% OFF Phone Price : $7.64
In Stock

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…

Read more

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…

Read more

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…

Read more
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…

Read more
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.…

Read more
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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