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Craftsman
Gas Walk-Behind Mower

Model # 917251021 Official Craftsman 42" rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917251021 42" 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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ALL PARTS
Showing 10 of 123 parts  |
Ret Spring 4939M
#39

Hanger assembly diagram

Ret spring

Part #4939M

Replaced by #532003146

?
Manufacturer substitution
This part replaces 4939M. 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
Bolt 126216
Bolt

Part #126216

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

Spring 2876H
#27

Hanger assembly diagram

Spring

Part #2876H

Replaced by #532002876

?
Manufacturer substitution
This part replaces 2876H. Substitute parts can look different from the original.
This item is not returnable
$5.31 | 
16% OFF Phone Price : $6.31
In Stock
Clevis Pin 7461H
#21

Hanger assembly diagram

Clevis pin

Part #7461H

Replaced by #583778201

?
Manufacturer substitution
This part replaces 7461H. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Washer 9914M
#42

Housing assembly diagram

Washer

Part #9914M

Replaced by #583781401

?
Manufacturer substitution
This part replaces 9914M. Substitute parts can look different from the original.
$20.54
In Stock
1641-zerk 6855M
#12

Housing assembly diagram

1641-zerk

Part #6855M

Replaced by #532183226

?
Manufacturer substitution
This part replaces 6855M. Substitute parts can look different from the original.
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Housing 42 8306H
#32

Housing assembly diagram

Housing 42

Part #8306H

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

Hex Nut 120376
Hex nut

Part #120376

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

Clevis 1123H
#22

Hanger assembly diagram

Clevis

Part #1123H

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

Hanger Comp 606A249
#30

Hanger assembly diagram

Hanger comp

Part #606A249

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

Symptoms for gas walk-behind mowers

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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

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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.…

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Repair difficulty
Time required
 60 minutes or less
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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.…

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Time required
 15 minutes or less
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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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Time required
 15 minutes or less

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