Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Craftsman
Gas Walk-Behind Mower

Model # 917378934 Official Craftsman rotary lawn mower

Here are the diagrams and repair parts for Official Craftsman 917378934 rotary lawn mower, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
  View engine

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 172 parts  |
Helical Gear 171755
#71

Wheels/tires/bag diagram

Helical gear

Part #171755

Replaced by #532171755

?
Manufacturer substitution
This part replaces 171755. Substitute parts can look different from the original.
This item is not returnable
$26.64
| 
18% OFF Phone Price : $32.64
In Stock
Lawn Mower Grass Bag 188814
#54

Wheels/tires/bag diagram

Lawn mower grass bag

Part #188814

Replaced by #532410667

?
Manufacturer substitution
This part replaces 188814. Substitute parts can look different from the original.
$79.98
In Stock
Poulan Transmission Bracket 169738X004
#75

Wheels/tires/bag diagram

Poulan transmission bracket

Part #169738X004

This item is not returnable
$3.99
In Stock
Poulan Lawn Mower Gear Case, Upper 174917
#62

Wheels/tires/bag diagram

Poulan lawn mower gear case, upper

Part #174917

This item is not returnable
$3.49
In Stock
Lawn & Garden Equipment Washer (replaces 532851074, 5328510-74) 851074
#48

Engine/housing/handle diagram

Lawn & garden equipment washer (replaces 532851074, 5328510-74)

Part #851074

Replaced by #532851074

?
Manufacturer substitution
This part replaces 851074. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Lawn Mower Battery 189589
#52

Engine/housing/handle diagram

Lawn mower battery

Part #189589

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

Lawn Mower Spacer 701313
#40

Engine/housing/handle diagram

Lawn mower spacer

Part #701313

Replaced by #584456801

?
Manufacturer substitution
This part replaces 701313. Substitute parts can look different from the original.
$8.54
In Stock
Drive Spring 175285
#61

Engine/housing/handle diagram

Drive spring

Part #175285

Replaced by #532193000

?
Manufacturer substitution
This part replaces 175285. Substitute parts can look different from the original.
$10.26
In Stock
Lawn Mower Height Adjuster Knob 701037
Lawn mower height adjuster knob

Part #701037

Replaced by #532701037

?
Manufacturer substitution
This part replaces 701037. Substitute parts can look different from the original.
This item is not returnable
$6.64
| 
13% OFF Phone Price : $7.64
In Stock
Rope Guide 179585
#19

Engine/housing/handle diagram

Rope guide

Part #179585

Replaced by #586122501

?
Manufacturer substitution
This part replaces 179585. Substitute parts can look different from the original.
This item is not returnable
$15.59
| 
11% OFF Phone Price : $17.59
In Stock

Symptoms for gas walk-behind mowers

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

View all

Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up...

Read more

Why does my lawn mower cut unevenly?

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

Read more

Why does my lawn mower run rough?

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

Read more

Why won't my lawn mower move?

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

Read more

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...

Read more

Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent...

Read more

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.

View all
How to replace a lawn mower recoil starter on an OHV engine

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....

Read more
Repair difficulty
Time required
15 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels....

Read more
Repair difficulty
Time required
60 minutes or less
How to replace a lawn mower carburetor

How to replace a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Replace the carburetor if it's clogged or damaged....

Read more
Repair difficulty
Time required
15 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.

View all
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....

Read more
Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect....

Read more
Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them....

Read more

Parts & More