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Craftsman
Gas Walk-Behind Mower

Model # 917381020 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 917381020 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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Model diagram and schematic

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ALL PARTS
Showing 10 of 61 parts  |
Lock Nut 83923
#46

Replacement parts diagram

Lock nut

Part #83923

Replaced by #532409149

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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
In Stock
Handle Bolt 131959
#7

Replacement parts 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.
BEST SELLER
$7.98
| 
11% OFF Phone Price : $8.98
In Stock
Lawn Mower Blade Adapter 850977
#61

Replacement parts diagram

Lawn mower blade adapter

Part #850977

Replaced by #581547901

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Manufacturer substitution
This part replaces 850977. Substitute parts can look different from the original.
BEST SELLER
$18.44
| 
10% OFF Phone Price : $20.44
In Stock
Walk-behind Lawn Mower Selector Knob 87877
#40

Replacement parts diagram

Walk-behind lawn mower selector knob

Part #87877

Replaced by #532087877

?
Manufacturer substitution
This part replaces 87877. Substitute parts can look different from the original.
This item is not returnable
$5.31
| 
16% OFF Phone Price : $6.31
In Stock
Handle Knob 63688
#16

Replacement parts diagram

Handle knob

Part #63688

Replaced by #532183724

?
Manufacturer substitution
This part replaces 63688. Substitute parts can look different from the original.
This item is not returnable
$11.98
| 
14% OFF Phone Price : $13.98
In Stock
Spring 850855X004
#39

Replacement parts diagram

Spring

Part #850855X004

Replaced by #532401621

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Manufacturer substitution
This part replaces 850855X004. Substitute parts can look different from the original.
$8.54
In Stock
Lawn Mower Cable Bracket 86899X004
#13

Replacement parts diagram

Lawn mower cable bracket

Part #86899X004

Replaced by #532430034

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Manufacturer substitution
This part replaces 86899X004. Substitute parts can look different from the original.
$10.26
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
Clip 85827
#22

Replacement parts diagram

Clip

Part #85827

Replaced by #582940401

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Manufacturer substitution
This part replaces 85827. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Lawn Mower Blade, 20-in 850972
#62

Replacement parts diagram

Lawn mower blade, 20-in

Part #850972

Replaced by #532145106

?
Manufacturer substitution
This part replaces 850972. Substitute parts can look different from the original.
$28.46
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....

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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