Gas Walk-Behind Mower

Model # 917380310 Official Craftsman 20" rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917380310 20" rotary lawn mower, as well as links to manuals and error code tables, if available.

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917380310 Walk-Behind Mowers
Selector Knob 77865
#36

Replacement parts diagram

Selector knob

Part #77865

Replaced by #532701037

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Manufacturer substitution
This part replaces 77865. Substitute parts can look different from the original.
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Washer 52160
#31

Replacement parts diagram

Washer

Part #52160

Replaced by #596040101

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Manufacturer substitution
This part replaces 52160. Substitute parts can look different from the original.
This item is not returnable
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Spacer 84920
#37

Replacement parts diagram

Spacer

Part #84920

Replaced by #532401629

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Manufacturer substitution
This part replaces 84920. Substitute parts can look different from the original.
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$4.31
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Screw 55187
#27

Replacement parts diagram

Screw

Part #55187

Replaced by #532428867

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Manufacturer substitution
This part replaces 55187. Substitute parts can look different from the original.
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Shoulder Bolt 84921
#40

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
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Selctr Sprng 84888
#35

Replacement parts diagram

Selctr sprng

Part #84888

Replaced by #532401621

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Manufacturer substitution
This part replaces 84888. Substitute parts can look different from the original.
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Hairpin 51793
#13

Replacement parts diagram

Hairpin

Part #51793

Replaced by #532051793

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Manufacturer substitution
This part replaces 51793. Substitute parts can look different from the original.
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$8.64
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Blade 69229
Blade

Part #69229

Replaced by #532145106

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Manufacturer substitution
This part replaces 69229. Substitute parts can look different from the original.
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Bracket, Left 85664
#25

Replacement parts diagram

Bracket, left

Part #85664

Replaced by #532192983

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Manufacturer substitution
This part replaces 85664. Substitute parts can look different from the original.
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Guard 85534
#45

Replacement parts diagram

Guard

Part #85534

Replaced by #596215201

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Manufacturer substitution
This part replaces 85534. Substitute parts can look different from the original.
This item is not returnable
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Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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

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…

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

How to replace a lawn mower drive cable

The drive cable engages the transmission to spin the drive wheels and move the mower across the grass. Replace the drive…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower starter rope

How to replace a lawn mower starter rope

These step-by-step instructions show how to replace a broken starter pull rope on a walk-behind lawn mower.…

Repair difficulty
Time required
 30 minutes or less

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

The best time of day to mow grass (and when you should absolutely not)

The best time of day to mow grass (and when you should absolutely not)

Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…

Top 10 electric lawn and garden tools

Top 10 electric lawn and garden tools

Learn about the top 10 must-have electric lawn & garden tools for 2023…

How to enjoy all the online benefits we offer on our Sears PartsDirect website

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.…