Tractor Accessories
Lawn & Garden

Model # 640278 Official Tractor Accessories carburetor

Here are the diagrams and repair parts for Official Tractor Accessories 640278 carburetor, 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 29 parts  |

Lawn Mower O-ring 631028
#29

Carburetor 640278 diagram

Lawn mower o-ring

Part #631028

Replaced by #631028A

?
Manufacturer substitution
This part replaces 631028. 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 Seat 631021
#30

Carburetor 640278 diagram

Needle seat

Part #631021

Replaced by #631021B

?
Manufacturer substitution
This part replaces 631021. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$9.79
9% OFF Phone Price : $10.79
In Stock
Lawn & Garden Equipment Engine Carburetor Primer Bulb 640259
#35

Carburetor 640278 diagram

Lawn & garden equipment engine carburetor primer bulb

Part #640259

BEST SELLER
This item is not returnable
$9.79
9% OFF Phone Price : $10.79
In Stock
Float 632019
#28

Carburetor 640278 diagram

Float

Part #632019

Replaced by #632019A

?
Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$8.89
10% OFF Phone Price : $9.89
In Stock
Troybilt Lawn & Garden Equipment Engine Carburetor Float Bowl (replaces 631025, 632808) 631867
#25

Carburetor 640278 diagram

Troybilt lawn & garden equipment engine carburetor float bowl (replaces 631025, 632808)

Part #631867

This item is not returnable
$3.49
22% OFF Phone Price : $4.49
In Stock
Lawn & Garden Equipment Throttle Shaft Return Spring (replaces 630731, 631279, 631279a, 631279l, 632016) 631767
#2

Carburetor 640278 diagram

Lawn & garden equipment throttle shaft return spring (replaces 630731, 631279, 631279a, 631279l, 632016)

Part #631767

This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock
Lawn & Garden Equipment Engine Carburetor Nozzle 632735
#36

Carburetor 640278 diagram

Lawn & garden equipment engine carburetor nozzle

Part #632735

In Stock
Lawn & Garden Equipment Screw 651025
#17

Carburetor 640278 diagram

Lawn & garden equipment screw

Part #651025

This item is not returnable
In Stock
Troybilt Lawn & Garden Equipment Engine Welch Plug (replaces 53-005) 631027
#48

Carburetor 640278 diagram

Troybilt lawn & garden equipment engine welch plug (replaces 53-005)

Part #631027

This item is not returnable
In Stock
Lawn & Garden Equipment Engine Carburetor Float Pin 631022
#31

Carburetor 640278 diagram

Lawn & garden equipment engine carburetor float pin

Part #631022

This item is not returnable
$2.49
29% OFF Phone Price : $3.49
In Stock

Most common symptoms to help you fix your range hoods

Choose a symptom to see related range hood repairs.

Main causes: bad fan switch, electronic control board failure, faulty user interface control, wiring failure…

Main causes: bad light bulb, broken light switch, bad electronic control, user interface control failure, bad light sock…

Main causes: sentry feature trips due to high cooktop temperature, bad temperature sensor, electronic control board fail…

Main causes: lack of electrical power, bad electronic control board, faulty user interface, fan and light switch failure…

Main causes: clogged air filters, air duct problems, fan motor failure, broken fan blade…

Main causes: loose mounting screws, bad fan motor, damaged fan blade, worn fan motor bearings…

Main causes: electronic control board failure, bad user interface control, light and fan switch failures, wiring failure…

Most common repair guides to help fix your range hoods

These step-by-step repair guides will help you safely fix what’s broken on your range hood.

How to replace a range hood fan motor

How to replace a range hood fan motor

If the fan on the range hood won’t run, it’s likely that the fan motor has failed. Follow the steps in this guide to rep…

Repair difficulty
Time required
 30 minutes or less
How to replace a range hood fan switch

How to replace a range hood fan switch

The fan switch activates the fan motor in the range hood. If the fan switch is defective, replace it using the detailed …

Repair difficulty
Time required
 15 minutes or less
How to replace a range hood light socket

How to replace a range hood light socket

When you replace a light bulb and it still won’t work, the socket is likely defective. Use the detailed steps in this re…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your range hoods

Use the advice and tips in these articles and videos to get the most out of your range hood.

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.…

How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…