Gas Walk-Behind Mower

Model # 9178370 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 9178370 lawn mower, as well as links to manuals and error code tables, if available.

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9178370 Walk-Behind Mowers
E-ring 98000071
E-ring

Part #98000071

Replaced by #812000029

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Manufacturer substitution
This part replaces 98000071. Substitute parts can look different from the original.
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$4.51
18% OFF Phone Price : $5.51
In Stock
Lock Washer 10040600
#70

Steering assembly diagram

Lock washer

Part #10040600

Replaced by #596238701

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Manufacturer substitution
This part replaces 10040600. Substitute parts can look different from the original.
BEST SELLER
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$4.31
19% OFF Was : $5.31
In Stock
Battery 5111H
#1

Wheel assembly diagram

Battery

Part #5111H

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

Pin 786026
#50

Transaxle diagram

Pin

Part #786026

Replaced by #786026B

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Manufacturer substitution
This part replaces 786026. Substitute parts can look different from the original.
BEST SELLER
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$4.60
18% OFF Phone Price : $5.60
In Stock
Washer 19252016
Washer

Part #19252016

Replaced by #532121749

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Manufacturer substitution
This part replaces 19252016. Substitute parts can look different from the original.
This item is not returnable
$4.31
19% OFF Phone Price : $5.31
In Stock
Washer 19171616
#71

Wheel assembly diagram

Washer

Part #19171616

Replaced by #596040101

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Manufacturer substitution
This part replaces 19171616. Substitute parts can look different from the original.
This item is not returnable
In Stock
Washer 17/64 19091216
#3

Wheel assembly diagram

Washer 17/64

Part #19091216

Replaced by #596204201

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Manufacturer substitution
This part replaces 19091216. Substitute parts can look different from the original.
This item is not returnable
In Stock
Washer 780001
#41

Transaxle diagram

Washer

Part #780001

Replaced by #780001

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Manufacturer substitution
This part replaces 780001. Substitute parts can look different from the original.
This item is not returnable
In Stock
Wizard Lawn Tractor Grease Fitting (replaces 1641, 40493, 532006855, 532124836, 532155595, 62569, 706, Lp-706) 6855M
#55

Wheel assembly diagram

Wizard lawn tractor grease fitting (replaces 1641, 40493, 532006855, 532124836, 532155595, 62569, 706, lp-706)

Part #6855M

Replaced by #532183226

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Manufacturer substitution
This part replaces 6855M. Substitute parts can look different from the original.
This item is not returnable
$7.20
12% OFF Phone Price : $8.20
In Stock
Washer 10040400
#19

Wheel assembly diagram

Washer

Part #10040400

Replaced by #596029801

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Manufacturer substitution
This part replaces 10040400. Substitute parts can look different from the original.
This item is not returnable
In Stock

Symptoms for gas walk-behind mowers

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

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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

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…

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 blade

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

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…

Repair difficulty
Time required
 45 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.

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.…

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

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

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

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