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Craftsman
Gas Walk-Behind Mower

Model # 917388290 Official Craftsman 21" 5.5-hp rear discharge rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917388290 21" 5.5-hp rear discharge rotary 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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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 203 parts  |
Lock Nut 83923
#39

Rotary lawn mower 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
Belt, 21-in 165833
#56

Rotary lawn mower diagram

Belt, 21-in

Part #165833

Replaced by #532406712

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Manufacturer substitution
This part replaces 165833. Substitute parts can look different from the original.
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Get free shipping with Automatic Reorder

$22.79 | 
21% OFF Phone Price : $28.79
In Stock
Handle Knob 136376
#14

Rotary lawn mower 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.
BEST SELLER
$10.64 | 
16% OFF Phone Price : $12.64
In Stock
Handle Bolt 131959
#6

Rotary lawn mower 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
Nut Lck 5/16 73990500
#38

Rotary lawn mower diagram

Nut lck 5/16

Part #73990500

Replaced by #596040501

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Manufacturer substitution
This part replaces 73990500. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.11
In Stock
Grass Bag 166113
#67

Rotary lawn mower diagram

Grass bag

Part #166113

Replaced by #532410666

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Manufacturer substitution
This part replaces 166113. Substitute parts can look different from the original.
BEST SELLER
$68.54 | 
8% OFF Phone Price : $74.54
In Stock
Rod.hinge.co 147286
#16

Rotary lawn mower diagram

Rod.hinge.co

Part #147286

Replaced by #532147286

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Manufacturer substitution
This part replaces 147286. Substitute parts can look different from the original.
This item is not returnable
$9.31 | 
10% OFF Phone Price : $10.31
In Stock
Lawn Mower Wheel 151162
#37

Rotary lawn mower diagram

Lawn mower wheel

Part #151162

Replaced by #582976901

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Manufacturer substitution
This part replaces 151162. Substitute parts can look different from the original.
This item is not returnable
$27.98 | 
18% OFF Phone Price : $33.98
In Stock
Upstop Bracket 850733X004
#13

Rotary lawn mower diagram

Upstop bracket

Part #850733X004

Replaced by #532850733

?
Manufacturer substitution
This part replaces 850733X004. Substitute parts can look different from the original.
This item is not returnable
$8.54
In Stock
Lawn & Garden Equipment Washer (replaces 532851074, 5328510-74) 851074
#55

Rotary lawn mower diagram

Lawn & garden equipment washer (replaces 532851074, 5328510-74)

Part #851074

Replaced by #532851074

?
Manufacturer substitution
This part replaces 851074. Substitute parts can look different from the original.
This item is not returnable
$6.83
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 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…

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Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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