Troybilt
Gas Walk-Behind Mower

Model # 12B-753B063 Official Troybilt lawn mower

Here are the diagrams and repair parts for Official Troybilt 12B-753B063 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.

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 354 parts  |

Brake Pad TC-799021
#38

Peerless transaxle: 915-027 diagram

Brake pad

Part #TC-799021

Replaced by #799021

?
Manufacturer substitution
This part replaces TC-799021. Substitute parts can look different from the original.
BEST SELLER
$10.16
16% OFF Phone Price : $12.16
In Stock
Brake Pad Plate TC-790007
#37

Peerless transaxle: 915-027 diagram

Brake pad plate

Part #TC-790007

Replaced by #790007

?
Manufacturer substitution
This part replaces TC-790007. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.29
16% OFF MSRP : $6.30
In Stock
Flange Lock Screw, 1/4-20 X 1 1186308
Flange lock screw, 1/4-20 x 1

Part #1186308

Replaced by #710-0599

?
Manufacturer substitution
This part replaces 1186308. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.91
17% OFF Phone Price : $5.91
In Stock
Spring TC-792144
#79

Peerless transaxle: 915-027 diagram

Spring

Part #TC-792144

Replaced by #792144

?
Manufacturer substitution
This part replaces TC-792144. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49
43% OFF MSRP : $4.40
In Stock
Holder Brake TC-790025
#44

Peerless transaxle: 915-027 diagram

Holder brake

Part #TC-790025

Replaced by #790025

?
Manufacturer substitution
This part replaces TC-790025. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$18.30
10% OFF Phone Price : $20.30
In Stock
Mulching Cover Assembly 631-04011
#52

Mower deck assembly diagram

Mulching cover assembly

Part #631-04011

Replaced by #631-04252

?
Manufacturer substitution
This part replaces 631-04011. Substitute parts can look different from the original.
BEST SELLER
$46.39
10% OFF Phone Price : $51.39
In Stock
Valve Stem 1718086
#305

Drive assembly diagram

Valve stem

Part #1718086

Replaced by #934-0255

?
Manufacturer substitution
This part replaces 1718086. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.43
16% OFF Phone Price : $6.43
In Stock
Screw, 1/4-20 X 1-1/4" TC-792073
Screw, 1/4-20 x 1-1/4"

Part #TC-792073

Replaced by #792073

?
Manufacturer substitution
This part replaces TC-792073. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.49
43% OFF MSRP : $4.40
In Stock
Lawn Mower Needle Bearing TC-780086A
#2

Peerless transaxle: 915-027 diagram

Lawn mower needle bearing

Part #TC-780086A

Replaced by #780086

?
Manufacturer substitution
This part replaces TC-780086A. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$13.33
13% OFF Phone Price : $15.33
In Stock
Washer 1708012
#51

Drive assembly diagram

Washer

Part #1708012

Replaced by #736-0188

?
Manufacturer substitution
This part replaces 1708012. Substitute parts can look different from the original.
$6.58
13% OFF Phone Price : $7.58
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.

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.…