MTD
Lawn & Garden Engine

Model #4P90HU Official MTD engine

Here are the diagrams and repair parts for MTD 4P90HU 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:

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  • 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”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Showing 10 of 170 parts

Lawn & Garden Equipment Engine Spark Plug (replaces 951-10292, OCC-751-10292)#160

Cylinder head/camshaft 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
In Stock
$6.42 | 
13% OFF 
Phone Price: $7.42
Lawn & Garden Equipment Engine Oil Filter#114

Crankshaft/gear Diagram

In Stock
$14.14 | 
12% OFF 
Phone Price: $16.14
Lawn & Garden Equipment Engine Air Filter (replaces 937-05065)#126

Air filter/manifold Diagram

Lawn & garden equipment engine air filter

Part #951-12260
Replaced by #937-05065A
?
Manufacturer substitution
This part replaces 951-12260. Substitute parts can look different from the original.
BEST SELLER
In Stock
$18.05 | 
38% OFF 
MSRP: $29.00
Lawn & Garden Equipment Engine Pre-Filter#124

Air filter/manifold Diagram

In Stock
$8.11 | 
11% OFF 
Phone Price: $9.11
Lawn & Garden Equipment Engine Ignition Coil#39

Flywheel/coil Diagram

In Stock
$82.39 | 
6% OFF 
Phone Price: $87.39
Lawn & Garden Equipment Engine Carburetor Insulator Gasket#138

Carburetor Diagram

Lawn & garden equipment engine carburetor insulator gasket

Part #951-12263
This item is not returnable
In Stock
$6.19 | 
14% OFF 
Phone Price: $7.19
Lawn & Garden Equipment Engine Starter Motor#9

Starter Diagram

In Stock
$214.67 | 
$10.00 OFF 
Phone Price: $224.67
Lawn & Garden Equipment Engine Starter Motor Front Cover#13

Starter Diagram

Lawn & garden equipment engine starter motor front cover

Part #951-12208
This item is not returnable
In Stock
$29.09 | 
15% OFF 
Phone Price: $34.09
Lawn & Garden Equipment Engine Fuel Shut-Off Solenoid#AA

Carburetor Diagram

In Stock
$64.29 | 
7% OFF 
Phone Price: $69.29
Lawn & Garden Equipment Engine Oil Seal (replaces 951-11375)#118

Crankshaft/gear Diagram

Lawn & garden equipment engine oil seal

Part #951-11375
Replaced by #951-11375A
?
Manufacturer substitution
This part replaces 951-11375. Substitute parts can look different from the original.
In Stock
$15.01

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