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Craftsman
Gas Walk-Behind Mower

Model # 917378890 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378890 lawn mower, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

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 265 parts  |
Hex Flange Lock Nut 145212
#9

Wheels/bag/tires/belt diagram

Hex flange lock nut

Part #145212

Replaced by #532409149

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Manufacturer substitution
This part replaces 145212. Substitute parts can look different from the original.
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Pipe Fitting 132010
#31

Wheels/bag/tires/belt diagram

Pipe fitting

Part #132010

Replaced by #532409149

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Manufacturer substitution
This part replaces 132010. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
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Lock Nut 83923
#26

Engine/housing/handle/blade diagram

Lock nut

Part #83923

Replaced by #532409149

?
Manufacturer substitution
This part replaces 83923. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
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Handle Knob 136376
#6

Engine/housing/handle/blade diagram

Handle knob

Part #136376

Replaced by #532185577

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Manufacturer substitution
This part replaces 136376. Substitute parts can look different from the original.
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$10.64 | 
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In Stock
Dust Cover 180504
#14

Wheels/bag/tires/belt diagram

Dust cover

Part #180504

Replaced by #581840401

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Manufacturer substitution
This part replaces 180504. Substitute parts can look different from the original.
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Molded Ignition Key 180331
#55

Engine/housing/handle/blade diagram

Molded ignition key

Part #180331

Replaced by #532180331

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Manufacturer substitution
This part replaces 180331. Substitute parts can look different from the original.
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Washer 67725
#16

Wheels/bag/tires/belt 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.
BEST SELLER
$7.98 | 
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Lawn Mower Drive Cable 184586
#1

Wheels/bag/tires/belt diagram

Lawn mower drive cable

Part #184586

Replaced by #583134601

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Manufacturer substitution
This part replaces 184586. Substitute parts can look different from the original.
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$33.31 | 
15% OFF Phone Price : $39.31
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Lawn Mower Axle 186575X004
#30

Engine/housing/handle/blade diagram

Lawn mower axle

Part #186575X004

Replaced by #532186575

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Manufacturer substitution
This part replaces 186575X004. Substitute parts can look different from the original.
$17.11
In Stock
Gear 183499
#62

Wheels/bag/tires/belt diagram

Gear

Part #183499

Replaced by #532183499

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Manufacturer substitution
This part replaces 183499. Substitute parts can look different from the original.
This item is not returnable
$19.98 | 
9% OFF Phone Price : $21.98
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…

Read more

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.…

Read more
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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