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

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Craftsman
Engine & Drivetrain

Model # 91725870 Official Craftsman st transmission

Here are the diagrams and repair parts for Official Craftsman 91725870 st transmission, 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 340 parts  |
Lawn Tractor Axle Flange Bearing (replaces 532009040, 5320090-40, 532124959, 577203109, 5920h, 5920h1, P-1246, P-1622) 9040H
#7

16 tractor/front axle diagram

Lawn tractor axle flange bearing (replaces 532009040, 5320090-40, 532124959, 577203109, 5920h, 5920h1, p-1246, p-1622)

Part #9040H

BEST SELLER
This item is not returnable
$5.98 | 
60% OFF MSRP : $15.00
In Stock
Solenoid 103R
#28

16 tractor/electrical diagram

Solenoid

Part #103R

Replaced by #532146154

?
Manufacturer substitution
This part replaces 103R. Substitute parts can look different from the original.
BEST SELLER
$20.79 | 
19% OFF Phone Price : $25.79
In Stock
Hardened Race Thrust Bearing 6266H
#39

Replacement parts diagram

Hardened race thrust bearing

Part #6266H

Replaced by #532006266

?
Manufacturer substitution
This part replaces 6266H. Substitute parts can look different from the original.
BEST SELLER
$10.99 | 
15% OFF Phone Price : $12.99
In Stock
Gasket 2949R
#22

16 tractor/main frame, dash, grill diagram

Gasket

Part #2949R

Replaced by #692236

?
Manufacturer substitution
This part replaces 2949R. Substitute parts can look different from the original.
BEST SELLER
$6.56 | 
13% OFF Phone Price : $7.56
In Stock
E-ring 5000P
E-ring

Part #5000P

Replaced by #812000029

?
Manufacturer substitution
This part replaces 5000P. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$3.50 | 
22% OFF Phone Price : $4.50
In Stock
Ring 5845R
#38

16 tractor/steering and final drive diagram

Ring

Part #5845R

Replaced by #812000029

?
Manufacturer substitution
This part replaces 5845R. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$3.50 | 
22% OFF Phone Price : $4.50
In Stock
Nut 5394H
Nut

Part #5394H

Replaced by #73930600

?
Manufacturer substitution
This part replaces 5394H. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Valve 795R
Valve

Part #795R

Replaced by #65139

?
Manufacturer substitution
This part replaces 795R. Substitute parts can look different from the original.
BEST SELLER
$10.49 | 
16% OFF Phone Price : $12.49
In Stock
Thrust Bearing 1370H
#59

Replacement parts diagram

Thrust bearing

Part #1370H

Replaced by #532001370

?
Manufacturer substitution
This part replaces 1370H. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Needle Brg 4895H
#58

Replacement parts diagram

Needle brg

Part #4895H

Replaced by #532004895

?
Manufacturer substitution
This part replaces 4895H. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$12.79 | 
14% OFF Phone Price : $14.79
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 run rough?

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

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 vibrate a lot?

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

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

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

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 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…

Read more
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. …

Read more
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…

Read more
Repair difficulty
Time required
 45 minutes or less

Articles and videos for gas 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
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…

Read more
How to remove a lawn mower blade using a removal tool

How to remove a lawn mower blade using a removal tool

Learn how a blade removal tool makes replacing the blade easier and safer…

Read more
Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Find out how to test and fix problems with the spark plug, stop wire, ignition coil and flywheel.…

Read more

Parts & More