MTD
Gas Walk-Behind Mower

Model # 12ABW35T799 Official MTD 28" lawn mower - pro series

Here are the diagrams and repair parts for Official MTD 12ABW35T799 28" lawn mower - pro series, 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 315 parts  |

Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
#12

Drive & upper handles/console diagram

Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

BEST SELLER
This item is not returnable
$3.00
25% OFF Phone Price : $4.00
In Stock
Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

BEST SELLER
This item is not returnable
$4.40
19% OFF Phone Price : $5.40
In Stock
Ace Lawn & Garden Equipment Self-tapping Bolt, 5/16-18 X 3/4-in (replaces 1724491, 1740496, 1909304, 910-1260a, Gw-7101260) 710-1260A
#10

Deck/spindle diagram

Ace lawn & garden equipment self-tapping bolt, 5/16-18 x 3/4-in (replaces 1724491, 1740496, 1909304, 910-1260a, gw-7101260)

Part #710-1260A

BEST SELLER
This item is not returnable
$4.25
19% OFF Phone Price : $5.25
In Stock
Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

BEST SELLER
This item is not returnable
$4.49
18% OFF Phone Price : $5.49
Back Order
Troybilt Lawn & Garden Equipment Ball Bearing (replaces 941-0919a) 941-0919B
#40

Deck/spindle diagram

Troybilt lawn & garden equipment ball bearing (replaces 941-0919a)

Part #941-0919B

BEST SELLER
$19.64
9% OFF Phone Price : $21.64
In Stock
Yard Machines Lawn Mower Handle Knob (replaces 01000382, 113589, 720-04072, 720-04125) 720-04072A
#50

Deck/spindle diagram

Yard machines lawn mower handle knob (replaces 01000382, 113589, 720-04072, 720-04125)

Part #720-04072A

BEST SELLER
$9.33
10% OFF Phone Price : $10.33
In Stock
Lawn Tractor Deck Roller (replaces 731-05679a) 731-05679B
#23

Transmission/axle bearing diagram

Lawn tractor deck roller (replaces 731-05679a)

Part #731-05679B

BEST SELLER
$27.80
18% OFF Phone Price : $33.80
In Stock
Troybilt Lawn Tractor Blade Idler Pulley Spacer 748-05029A
#30

Deck/spindle diagram

Troybilt lawn tractor blade idler pulley spacer

Part #748-05029A

This item is not returnable
$7.38
12% OFF Phone Price : $8.38
In Stock
Troybilt Lawn & Garden Equipment Screw 710-06133
Troybilt lawn & garden equipment screw

Part #710-06133

This item is not returnable
$4.76
17% OFF Phone Price : $5.76
In Stock
Craftsman Lawn Mower Drive Control Cable 946-05245
#22

Drive & upper handles/console diagram

Craftsman lawn mower drive control cable

Part #946-05245

$57.34
9% OFF Phone Price : $63.34
In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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 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 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....

Repair difficulty
Time required
15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix....

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.

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....

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....

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....