Craftsman
Engine & Drivetrain

Model # 13181097 Official Craftsman gearcase

Here are the diagrams and repair parts for Official Craftsman 13181097 gearcase, 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.

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 24 parts  |

Lock Nut, 1/4-20 STD541425
#8

Gear case assembly diagram

Lock nut, 1/4-20

Part #STD541425

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

Washer 81203
#5

Gear case assembly diagram

Washer

Part #81203

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

Clutch Jaw 75424
#15

Gear case assembly diagram

Clutch jaw

Part #75424

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

Drift Lock Pin 53912
#12

Gear case assembly diagram

Drift lock pin

Part #53912

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

Lawn & Garden Equipment Bearing 77881
#7

Gear case assembly diagram

Lawn & garden equipment bearing

Part #77881

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

Gear 75423
#14

Gear case assembly diagram

Gear

Part #75423

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

Worm 76344
#24

Gear case assembly diagram

Worm

Part #76344

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

Washer 75054
#13

Gear case assembly diagram

Washer

Part #75054

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

Woodruff Key STD580014
#23

Gear case assembly diagram

Woodruff key

Part #STD580014

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

Shifter Assembly 81099
#1

Gear case assembly diagram

Shifter assembly

Part #81099

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: 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, ba…

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…

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 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.…

Repair difficulty
Time required
 60 minutes or less
How to rebuild a lawn mower carburetor

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.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

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.

Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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.…

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.…