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Craftsman
Gas Walk-Behind Mower

Model # 917378721 Official Craftsman gas walk-behind lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378721 gas walk-behind 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
Bolt 58714
#7

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
American Yard Products Lawn & Garden Equipment Washer (replaces 532088343, 532088348, 5320883-48, 532-088348, 532088384) 88348
#38

Main frame diagram

American yard products lawn & garden equipment washer (replaces 532088343, 532088348, 5320883-48, 532-088348, 532088384)

Part #88348

Replaced by #532088348

?
Manufacturer substitution
This part replaces 88348. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Tapping Screw 750097
Tapping screw

Part #750097

Replaced by #817021008

?
Manufacturer substitution
This part replaces 750097. Substitute parts can look different from the original.
This item is not returnable
$3.99
In Stock
Washer 59289
#47

Main frame diagram

Washer

Part #59289

Replaced by #532059289

?
Manufacturer substitution
This part replaces 59289. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Lawn Mower Retainer Clip, 4-pack 55015
#11

Drive assembly 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
Wave Washer 57143
#33

Main frame diagram

Wave washer

Part #57143

Replaced by #532428450

?
Manufacturer substitution
This part replaces 57143. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Screw 86055
Screw

Part #86055

Replaced by #532183365

?
Manufacturer substitution
This part replaces 86055. Substitute parts can look different from the original.
$8.54
In Stock
Walk-behind Lawn Mower Handle Knob 87692
#12

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
Skirt 751084
#19

Main frame diagram

Skirt

Part #751084

Replaced by #532413160

?
Manufacturer substitution
This part replaces 751084. Substitute parts can look different from the original.
$20.54
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 vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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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 run rough?

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

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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 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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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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

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Repair difficulty
Time required
 15 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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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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Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…

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