Tractor Accessories
Lawn & Garden

Model # 590378 Official Tractor Accessories starter

Here are the diagrams and repair parts for Official Tractor Accessories 590378 starter, 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 23 parts  |

Hsg/releas 31421
#8

Unit parts diagram

Hsg/releas

Part #31421

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

Retaining Ring 29227
#1

Unit parts diagram

Retaining ring

Part #29227

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

Handle Assembly 31458
#3

Unit parts diagram

Handle assembly

Part #31458

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

Spring 29940
#20

Unit parts diagram

Spring

Part #29940

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

Lever 31422
#10

Unit parts diagram

Lever

Part #31422

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

Washer 31412
#9

Unit parts diagram

Washer

Part #31412

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

Spacer 31456
#13

Unit parts diagram

Spacer

Part #31456

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

Spring Hub 31457
#15

Unit parts diagram

Spring hub

Part #31457

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

Washer 29734
#17

Unit parts diagram

Washer

Part #29734

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

Brake 29717
#18

Unit parts diagram

Brake

Part #29717

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

Repair guides for front-engine lawn tractors

How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less
How to replace a riding lawn mower front tire

How to replace a riding lawn mower front tire

Get your mower moving again by using these instructions when replacing a damaged front tire.…

Repair difficulty
Time required
 60 minutes or less

Articles and videos for front-engine lawn tractors

Should I get an electric riding mower?

Should I get an electric riding mower?

Get help deciding whether to make the switch to a battery-powered riding 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.…