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  |

Lawn & Garden Equipment Engine Spark Plug 951-10292
#153

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
$5.70
15% OFF Phone Price : $6.70
In Stock
Lawn & Garden Equipment Engine Oil Filter 951-12690
#64

Crankshaft/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
$16.97
11% OFF Phone Price : $18.97
In Stock
Mtd Lawn Tractor Air Filter 937-05066
#65

Air intake diagram

Mtd lawn tractor air filter

Part #937-05066

This item is not returnable
$30.06
17% OFF Phone Price : $36.06
In Stock
Lawn & Garden Equipment Engine Nut 712-05015
Lawn & garden equipment engine nut

Part #712-05015

This item is not returnable
$10.14
16% OFF Phone Price : $12.14
In Stock
Lawn & Garden Equipment Engine Mounting Screw 710-04915
Lawn & garden equipment engine mounting screw

Part #710-04915

This item is not returnable
$6.75
13% OFF Phone Price : $7.75
In Stock
Lawn & Garden Equipment Engine Throttle Linkage Spring 951-12231
#87

Crankcase diagram

Lawn & garden equipment engine throttle linkage spring

Part #951-12231

This item is not returnable
$6.47
13% OFF Phone Price : $7.47
In Stock
Shrd:engine 951-12205
#7

Engine shroud diagram

Shrd:engine

Part #951-12205

In Stock
Mtd Cooling Fan 931-10866
#12

Ignition & electrical diagram

Mtd cooling fan

Part #931-10866

$59.60
9% OFF Phone Price : $65.60
In Stock
Mtd Lawn & Garden Equipment Engine Carburetor Gasket 951-14947
#72

Carburetor assembly diagram

Mtd lawn & garden equipment engine carburetor gasket

Part #951-14947

This item is not returnable
$12.51
14% OFF Phone Price : $14.51
In Stock
Lawn & Garden Equipment Engine Ignition Coil 994-00128
Lawn & garden equipment engine ignition coil

Part #994-00128

$109.05
10% OFF Phone Price : $121.05
In Stock