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Craftsman
Gas Walk-Behind Mower

Model # 917377911 Official Craftsman 21" 6.75-hp rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917377911 21" 6.75-hp rotary lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 271 parts  |
Pipe Fitting 132010
#8

Drive assembly 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
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$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Lock Nut 83923
#42

Drive assembly 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
In Stock
Hex Flange Lock Nut 145212
Hex flange lock nut

Part #145212

Replaced by #532409149

?
Manufacturer substitution
This part replaces 145212. 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
Lawn Mower Wheel Dust Cover 88080
#29

Drive assembly diagram

Lawn mower wheel dust cover

Part #88080

Replaced by #581840401

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Manufacturer substitution
This part replaces 88080. Substitute parts can look different from the original.
BEST SELLER
$8.22 | 
11% OFF Phone Price : $9.22
In Stock
Handle Bolt 131959
#7

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
#11

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
Washer 67725
#30

Drive assembly 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 | 
11% OFF Phone Price : $8.98
In Stock
Washer 52160
#27

Drive assembly diagram

Washer

Part #52160

Replaced by #596040101

?
Manufacturer substitution
This part replaces 52160. Substitute parts can look different from the original.
This item is not returnable
$5.11
In Stock
Lawn Mower Wheel, 8 X 2-in (replaces 157178, 180543) 150339
#40

Drive assembly diagram

Lawn mower wheel, 8 x 2-in (replaces 157178, 180543)

Part #150339

Replaced by #532150339

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Manufacturer substitution
This part replaces 150339. Substitute parts can look different from the original.
$32.98 | 
15% OFF Phone Price : $38.98
In Stock
Upstop Bracket 850733X004
#14

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

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. …

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

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