MTD
Home

Model # 4X90HU Official MTD engine

Here are the diagrams and repair parts for Official MTD 4X90HU 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 147 parts  |

Mtd Lawn Tractor Air Filter 937-05066
#65

Air intake diagram

Mtd lawn tractor air filter

Part #937-05066

This item is not returnable
$29.18
17% OFF Phone Price : $35.18
In Stock
Lawn & Garden Equipment Engine Flywheel Key 951-10307
#45

Crankshaft/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 Tractor Engine Oil Drain Plug (replaces 710-05311) 951-11644
#88

Crankcase diagram

Lawn tractor engine oil drain plug (replaces 710-05311)

Part #951-11644

This item is not returnable
$15.69
11% OFF Phone Price : $17.69
In Stock
Mtd Linkage-thro 951-14917
#89

Crankcase diagram

Mtd linkage-thro

Part #951-14917

In Stock
Stud 710-06319
#82

Air intake diagram

Stud

Part #710-06319

In Stock
Plug 951-14091
#23

Crankcase diagram

Plug

Part #951-14091

In Stock
Mtd Lawn & Garden Equipment Engine Voltage Regulator 925-06299
#108

Starter assembly diagram

Mtd lawn & garden equipment engine voltage regulator

Part #925-06299

$48.17
11% OFF Phone Price : $54.17
In Stock
Lawn & Garden Equipment Bushing 750-05320
#3

Engine shroud diagram

Lawn & garden equipment bushing

Part #750-05320

This item is not returnable
$6.25
14% OFF Phone Price : $7.25
In Stock
Mtd Lawn & Garden Equipment Engine Electric Starter 925-06300
#109

Starter assembly diagram

Mtd lawn & garden equipment engine electric starter

Part #925-06300

$255.24
$12.00 OFF Phone Price : $267.24
In Stock
Lawn & Garden Equipment Engine Carburetor 993-00170
#73

Carburetor assembly diagram

Lawn & garden equipment engine carburetor

Part #993-00170

In Stock

Most common symptoms to help you fix your ranges

Choose a symptom to see related range repairs.

Main causes: faulty temperature sensor, electronic control board problem, control thermostat failure, weak burner ignite…

Main causes: power supply problem, control thermostat or electronic control board failure, broken element, bad burner ig…

Main causes: food splatters, spilling food on the oven door, allowing liquid to drip through oven door vent when cleanin…

Main causes: power supply failure, blown thermal fuse, bad relay control board, damaged terminal block, wiring failure…

Main causes: broken broiler element, weak or broken broil burner igniter, control system failure, faulty temperature sen…

Main causes: bad bake element, broken burner igniter, control system failure, blown thermal fuse, faulty temperature sen…

Main causes: broken oven door lock assembly, wiring failure, electronic control board problem…

Most common repair guides to help fix your ranges

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

How to replace a range oven door switch

How to replace a range oven door switch

The oven door switch detects whether the oven door is closed and helps control the oven light. Replace the switch if it …

Repair difficulty
Time required
 30 minutes or less
How to replace a range oven door lock assembly

How to replace a range oven door lock assembly

Oven door not locking? You can replace the lock assembly in less than 30 minutes. Here's how.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your ranges

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

How to clean and maintain your stove

How to clean and maintain your stove

Learn how to clean and maintain your stove to keep it in top shape.…

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.…

Oven door won't open: troubleshooting door lock problems on a range video

Oven door won't open: troubleshooting door lock problems on a range video

Troubleshoot and repair problems with your range when your oven door locks shut and you can't get it open.…