Craftsman
Gas Walk-Behind Mower

Model #917378441 Official Craftsman gas walk-behind lawn mower

Here are the diagrams and repair parts for Craftsman 917378441 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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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
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Parts List

Showing 10 of 100 parts

Lawn Mower Blade (replaces 594893001)#47

Engine/housing/handle Diagram

Belt, 21-in

Part #175064
Replaced by #532406712
?
Manufacturer substitution
This part replaces 175064. Substitute parts can look different from the original.
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In Stock
$14.24 | 
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Phone Price: $16.24
Lawn Mower Handle Knob (replaces 180453, 189713X418, 442571X428)#6

Engine/housing/handle Diagram

Handle knob

Part #136376
Replaced by #532185577
?
Manufacturer substitution
This part replaces 136376. Substitute parts can look different from the original.
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In Stock
$2.49 | 
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Lawn Mower Drive Wheel, 8 x 2-in (replaces 180767, 532180775, 5321807-75)#11

Wheels/tires/bag Diagram

In Stock
$23.03 | 
23% OFF 
MSRP: $30.00
Lawn Mower Wheel Dust Cover (replaces 189403, 532189403, 5321894-03)#14

Wheels/tires/bag Diagram

Dust cover

Part #180504
Replaced by #581840401
?
Manufacturer substitution
This part replaces 180504. Substitute parts can look different from the original.
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In Stock
$3.89 | 
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Lawn Mower Bolt (replaces 191574)#5

Engine/housing/handle Diagram

Handle bolt

Part #131959
Replaced by #532191574
?
Manufacturer substitution
This part replaces 131959. Substitute parts can look different from the original.
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$2.89 | 
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Lawn Mower Blade Adapter (replaces 532850977, 5328509-77, 850977)#46

Engine/housing/handle Diagram

Lawn mower blade adapter

Part #851514
Replaced by #581547901
?
Manufacturer substitution
This part replaces 851514. Substitute parts can look different from the original.
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In Stock
$14.39 | 
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Briggs & Stratton Lawn & Garden Equipment Engine Tune-Up Kit (replaces 5106B, 5140WEB)

#NI

All parts Diagram

Tune-up kit

Part #5106A
Replaced by #5140B
?
Manufacturer substitution
This part replaces 5106A. Substitute parts can look different from the original.
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In Stock
$20.80 | 
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MSRP: $32.00
Lawn Mower Washer (replaces 67725)#16

Wheels/tires/bag Diagram

Washer

Part #67725
Replaced by #532067725
?
Manufacturer substitution
This part replaces 67725. Substitute parts can look different from the original.
BEST SELLER
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In Stock
$4.20 | 
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Phone Price: $5.20
Lawn & Garden Equipment Pan Head Screw (replaces 532175262, 5321752-62)#26

Wheels/tires/bag Diagram

Lawn & garden equipment pan head screw (replaces 532175262, 5321752-62)

Part #175262
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In Stock
$5.29 | 
16% OFF 
Phone Price: $6.29
Lawn Mower Wheel (replaces 150341, 180406)#27

Engine/housing/handle Diagram

Lawn mower wheel

Part #150341
Replaced by #532150341
?
Manufacturer substitution
This part replaces 150341. Substitute parts can look different from the original.
BEST SELLER
Back Order
$39.00 | 
11% OFF 
Phone Price: $44.00

Symptoms for gas walk-behind mowers

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

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

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.

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 cracked.

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

Check your lawn mower blade regularly and replaced it if it's bent or damaged.

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to replace this tiny but essential part.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all 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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