Craftsman
Gas Walk-Behind Mower

Model #917907842 Official Craftsman 20" rotary lawn mower with rear bagger

Here are the diagrams and repair parts for Craftsman 917907842 20" rotary lawn mower with rear bagger, as well as links to manuals and error code tables, if available.

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Parts List

Showing 10 of 62 parts

Lawn Tractor Hex Lock Nut (replaces 873800500, STD541431)#32

Repair parts Diagram

Keps nut

Part #STD541431
Replaced by #596040501
?
Manufacturer substitution
This part replaces STD541431. Substitute parts can look different from the original.
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This item is not returnable
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$2.16
Lawn Mower Height Adjuster Lever Spacer#44

Repair 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
In Stock
$3.09 | 
24% OFF 
Phone Price: $4.09
Handle Knob#11

Repair parts Diagram

Handle knob

Part #63688

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

Lock Nut, 1/4-20

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Lock nut, 1/4-20

Part #STD541425

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

Lawn Tractor Decal (replaces 85463)#36

Repair 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
In Stock
$3.13
Screw#57

Repair parts Diagram

Hex screw

Part #650837
Replaced by #650837
?
Manufacturer substitution
This part replaces 650837. Substitute parts can look different from the original.
This item is not returnable
In Stock
$2.16
Lawn & Garden Equipment Shoulder Bolt#46

Repair parts Diagram

Shoulder bolt

Part #84921
Replaced by #532174719
?
Manufacturer substitution
This part replaces 84921. Substitute parts can look different from the original.
This item is not returnable
In Stock
$4.19
Lawn Mower 20-in Deck Blade (replaces 129277, 134871, 145106CS, 145106MS, 145106WA, 145106X431, 146749, 146749WA, 33255, 532129277, 5321608-37, 5327009-72, 532751646, 700972, 701211WA, 751646, 850972, 850972WA)

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Blade

Part #69229
Replaced by #145106
?
Manufacturer substitution
This part replaces 69229. Substitute parts can look different from the original.
This item is not returnable

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In Stock
$13.39 | 
13% OFF 
Phone Price: $15.39
Door#14

Repair parts Diagram

Door

Part #77524

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

Hinge Rod#17

Repair parts Diagram

Hinge rod

Part #77526

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.

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

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.

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 cracked.

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

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

Repair difficulty
Time required
 15 minutes or less
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 replace this tiny but essential part.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all 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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