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
15% OFF Phone Price : $6.88
Back Order
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
$16.48
11% OFF Phone Price : $18.48
In Stock
Lawn & Garden Equipment Engine Carburetor Gasket 951-12261
#135

Carburetor diagram

Lawn & garden equipment engine carburetor gasket

Part #951-12261

This item is not returnable
$6.35
14% OFF Phone Price : $7.35
In Stock
Lawn & Garden Equipment Engine Starter Motor 951-12207
#9

Starter diagram

Lawn & garden equipment engine starter motor

Part #951-12207

Replaced by #751P12207A

?
Manufacturer substitution
This part replaces 951-12207. Substitute parts can look different from the original.
$223.11
5% OFF Phone Price : $235.11
In Stock
Lawn & Garden Equipment Engine Intake Manifold Gasket 951-12258A
#129

Carburetor diagram

Lawn & garden equipment engine intake manifold gasket

Part #951-12258A

This item is not returnable
$6.35
14% OFF Phone Price : $7.35
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 Flywheel Key 951-10307
#77

Carnkshaft/crankcase cover diagram

Lawn & garden equipment engine flywheel key

Part #951-10307

Replaced by #751P10307A

?
Manufacturer substitution
This part replaces 951-10307. Substitute parts can look different from the original.
This item is not returnable
$3.22
24% OFF Phone Price : $4.22
In Stock
Lawn & Garden Equipment Engine Exhaust Gasket 951-12271
#159

Muffler diagram

Lawn & garden equipment engine exhaust gasket

Part #951-12271

This item is not returnable
In Stock
Lawn & Garden Equipment Engine Carburetor Mounting Stud 951-12264
#138

Carburetor diagram

Lawn & garden equipment engine carburetor mounting stud

Part #951-12264

This item is not returnable
$9.65
9% OFF Phone Price : $10.65
In Stock
Guide 951-12268
#149

Cylinder head diagram

Guide

Part #951-12268

This item is not returnable
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b...

Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems...

Main causes: dirty carburetor, stale fuel...

Main causes: punctured tire, damaged rim...

Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets...

Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect...

Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground...

Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly...

Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, ...

Repair guides for gas snowblowers

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

How to adjust snowblower engine valve lash

How to adjust snowblower engine valve lash

Adjust the engine valve lash on your snowblower to keep the engine starting and running smoothly....

Repair difficulty
Time required
15 minutes or less
How to adjust snowblower skid shoes

How to adjust snowblower skid shoes

To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high....

Repair difficulty
Time required
15 minutes or less
How to replace a snowblower shave plate

How to replace a snowblower shave plate

Follow the 7 easy steps in this repair guide/video to replace a worn out shave plate on your snowblower....

Repair difficulty
Time required
15 minutes or less

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

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

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....