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Craftsman
Gas Walk-Behind Mower

Model # 917378040 Official Craftsman 22" rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378040 22" rotary lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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Showing 10 of 200 parts  |
Lawn & Garden Equipment Nut 409148
#33

Drive control/wheels diagram

Lawn & garden equipment nut

Part #409148

Replaced by #532409149

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Manufacturer substitution
This part replaces 409148. Substitute parts can look different from the original.
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Hndl.knob.bl 189713X428
#12

Engine/housing/handle diagram

Hndl.knob.bl

Part #189713X428

Replaced by #532185577

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Manufacturer substitution
This part replaces 189713X428. Substitute parts can look different from the original.
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Lawn Mower Wheel Dust Cover (replaces 189403, 532189403, 5321894-03) 581840401
#29

Drive control/wheels diagram

Lawn mower wheel dust cover (replaces 189403, 532189403, 5321894-03)

Part #581840401

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Handle Bolt 191574
#59

Engine/housing/handle diagram

Handle bolt

Part #191574

Replaced by #532191574

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This part replaces 191574. Substitute parts can look different from the original.
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Lawn Mower Height Adjuster, Right (replaces 408018, 409098, 409109, 431145, 438462, 581497903) 581497908
#15

Drive control/wheels diagram

Lawn mower height adjuster, right (replaces 408018, 409098, 409109, 431145, 438462, 581497903)

Part #581497908

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Poulan Lawn Mower Ground Drive Belt, 3/8 X 35-1/2-in (replaces 406557, 580364611) 580364604
#12

Drive control/wheels diagram

Poulan lawn mower ground drive belt, 3/8 x 35-1/2-in (replaces 406557, 580364611)

Part #580364604

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Lawn Mower Height Adjuster, Left (replaces 408017, 409097, 409108, 438460, 532431143, 581497904) 581497907
#16

Drive control/wheels diagram

Lawn mower height adjuster, left (replaces 408017, 409097, 409108, 438460, 532431143, 581497904)

Part #581497907

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Lawn Mower Wheel (replaces 405745x427, 405745x460, 532413584) 581685301
#32

Drive control/wheels diagram

Lawn mower wheel (replaces 405745x427, 405745x460, 532413584)

Part #581685301

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Nut 132004
#99

Engine/housing/handle diagram

Nut

Part #132004

Replaced by #582478602

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This part replaces 132004. Substitute parts can look different from the original.
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Lawn Mower Grass Bag Frame (replaces 446432) 585054703
#31

Engine/housing/handle diagram

Lawn mower grass bag frame (replaces 446432)

Part #585054703

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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 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.…

Read more
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.…

Read more
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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