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

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Murray
Complete Deck

Model # 403131 Official Murray mower deck

Here are the diagrams and repair parts for Official Murray 403131 mower deck, 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 87 parts  |
Flange Nut 15X79
#77

36" mower housing diagram

Flange nut

Part #15X79

Replaced by #703409

?
Manufacturer substitution
This part replaces 15X79. Substitute parts can look different from the original.
$9.27 | 
10% OFF Phone Price : $10.27
In Stock
Lock Nut 15X88Z
#19

36" mower housing diagram

Lock nut

Part #15X88Z

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

Idler Pulley 20613
#12

36" mower housing diagram

Idler pulley

Part #20613

Replaced by #420613MA

?
Manufacturer substitution
This part replaces 20613. Substitute parts can look different from the original.
This item is not returnable
$25.18 | 
19% OFF Phone Price : $31.18
In Stock
Bolt 2X53
#39

36" mower housing diagram

Bolt

Part #2X53

Replaced by #703159

?
Manufacturer substitution
This part replaces 2X53. Substitute parts can look different from the original.
This item is not returnable
$6.69
In Stock
Drive Belt 21649
#13

36" mower housing diagram

Drive belt

Part #21649

Replaced by #37X12MA

?
Manufacturer substitution
This part replaces 21649. Substitute parts can look different from the original.

Get free shipping with Automatic Reorder

$44.11
In Stock
Housing 20551
#30

36" mower housing diagram

Housing

Part #20551

Replaced by #492574MA

?
Manufacturer substitution
This part replaces 20551. Substitute parts can look different from the original.
$68.99 | 
8% OFF Phone Price : $74.99
In Stock
Keps Nut 15X66
#73

36" mower housing diagram

Keps nut

Part #15X66

Replaced by #703914

?
Manufacturer substitution
This part replaces 15X66. Substitute parts can look different from the original.
This item is not returnable
$6.23
In Stock
Bolt 1X90
#37

36" mower housing diagram

Bolt

Part #1X90

Replaced by #703588

?
Manufacturer substitution
This part replaces 1X90. Substitute parts can look different from the original.
This item is not returnable
$6.49 | 
13% OFF Phone Price : $7.49
In Stock
Push-on-cap 28X23
#43

36" mower housing diagram

Push-on-cap

Part #28X23

Replaced by #703948

?
Manufacturer substitution
This part replaces 28X23. Substitute parts can look different from the original.
This item is not returnable
$7.29 | 
12% OFF Phone Price : $8.29
In Stock
Hex Nut 15X67
#27

36" mower housing diagram

Hex nut

Part #15X67

Replaced by #703251

?
Manufacturer substitution
This part replaces 15X67. Substitute parts can look different from the original.
$8.07 | 
11% OFF Phone Price : $9.07
In Stock

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Read more
Repair difficulty
Time required
 45 minutes or less
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…

Read more
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.…

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

View all
How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

Read more
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.…

Read more
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.…

Read more

Parts & More