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Craftsman
Gas Walk-Behind Mower

Model # 917921222 Official Craftsman 20" rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917921222 20" rotary 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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Showing 10 of 45 parts  |
Washer 61537
#30

Replacement parts diagram

Washer

Part #61537

Replaced by #596134901

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Manufacturer substitution
This part replaces 61537. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$3.98 | 
20% OFF Phone Price : $4.98
In Stock
Spacer 84920
#24

Replacement parts diagram

Spacer

Part #84920

Replaced by #532401629

?
Manufacturer substitution
This part replaces 84920. Substitute parts can look different from the original.
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Shoulder Bolt 84921
#29

Replacement parts diagram

Shoulder bolt

Part #84921

Replaced by #532174719

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Manufacturer substitution
This part replaces 84921. Substitute parts can look different from the original.
This item is not returnable
$13.69
In Stock
Decal 78850
#23

Replacement parts diagram

Decal

Part #78850

Replaced by #539913010

?
Manufacturer substitution
This part replaces 78850. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Handle Knob 63688
#10

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
Washer STD551025
#35

Replacement parts diagram

Washer

Part #STD551025

Replaced by #STD551025

?
Manufacturer substitution
This part replaces STD551025. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Washer 62335
#28

Replacement parts diagram

Washer

Part #62335

Replaced by #532062335

?
Manufacturer substitution
This part replaces 62335. Substitute parts can look different from the original.
$13.69
In Stock
Hairpin 51793
#13

Replacement parts diagram

Hairpin

Part #51793

Replaced by #532051793

?
Manufacturer substitution
This part replaces 51793. Substitute parts can look different from the original.
This item is not returnable
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Blade 69229
Blade

Part #69229

Replaced by #532145106

?
Manufacturer substitution
This part replaces 69229. Substitute parts can look different from the original.
$28.46
In Stock
Screw STD601003
#17

Replacement parts diagram

Screw

Part #STD601003

The manufacturer no longer makes this part, and there's no substitute part

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 run rough?

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

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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 vibrate a lot?

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

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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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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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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 replace a lawn mower spark plug

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 cr…

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

How to replace a lawn mower blade

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

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

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 re…

Read more
Repair difficulty
Time required
 45 minutes or less

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