MTD
Lawn & Garden Engine

Model # 4P90JUD Official MTD engine

Here are the diagrams and repair parts for Official MTD 4P90JUD engine, 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 169 parts  |

Lawn & Garden Equipment Engine Spark Plug 951-10292
#161

Cylinder head diagram

Lawn & garden equipment engine spark plug

Part #951-10292

Replaced by #951-10292A

?
Manufacturer substitution
This part replaces 951-10292. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.88
63% OFF MSRP : $16.00
In Stock
Lawn & Garden Equipment Engine Air Filter 937-05065
#125

Air intake diagram

Lawn & garden equipment engine air filter

Part #937-05065

Replaced by #937-05065A

?
Manufacturer substitution
This part replaces 937-05065. Substitute parts can look different from the original.
BEST SELLER
$22.87
21% OFF MSRP : $29.00
In Stock
Lawn & Garden Equipment Engine Oil Filter 951-12690
#114

Carnkshaft/crankcase cover diagram

Lawn & garden equipment engine oil filter

Part #951-12690

Replaced by #490-201-Y010

?
Manufacturer substitution
This part replaces 951-12690. Substitute parts can look different from the original.
BEST SELLER
$15.52
43% OFF MSRP : $27.00
In Stock
Lawn & Garden Equipment Engine Pre-filter 951-12256
#123

Air intake diagram

Lawn & garden equipment engine pre-filter

Part #951-12256

BEST SELLER
$8.33
11% OFF Phone Price : $9.33
In Stock
Lawn & Garden Equipment Engine Ignition Coil 951-12220
#39

Ignition & electrical diagram

Lawn & garden equipment engine ignition coil

Part #951-12220

BEST SELLER
$79.01
28% OFF MSRP : $110.00
In Stock
Lawn & Garden Equipment Engine Carburetor Gasket 951-12261
#135

Carburetor diagram

Lawn & garden equipment engine carburetor gasket

Part #951-12261

BEST SELLER
This item is not returnable
$6.35
14% OFF Phone Price : $7.35
In Stock
Guide 951-12268
#149

Cylinder head diagram

Guide

Part #951-12268

This item is not returnable
In Stock
Lawn Tractor Engine Sump Filter 951-12249
#100

Carnkshaft/crankcase cover diagram

Lawn tractor engine sump filter

Part #951-12249

This item is not returnable
$6.35
14% OFF Phone Price : $7.35
In Stock
Lawn & Garden Equipment Engine Cylinder Head Gasket 951-12273
#165

Cylinder head diagram

Lawn & garden equipment engine cylinder head gasket

Part #951-12273

$52.66
14% OFF MSRP : $61.00
In Stock
Lawn & Garden Equipment Engine Valve Retainer 951-12080
#151

Cylinder head diagram

Lawn & garden equipment engine valve retainer

Part #951-12080

This item is not returnable
$6.47
13% OFF Phone Price : $7.47
In Stock

Effective articles & videos to help repair your lawn & garden engines

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.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…