MTD
Lawn & Garden Engine

Model #4P90JUA Official MTD engine

Here are the diagrams and repair parts for MTD 4P90JUA 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”.

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

Showing 10 of 178 parts

Lawn & Garden Equipment Engine Spark Plug (replaces 951-10292, OCC-751-10292)#162

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
In Stock
$5.78 | 
17% OFF 
MSRP: $7.00
Lawn & Garden Equipment Engine Air Filter (replaces 937-05065)#126

Air filter 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
$19.19 | 
34% OFF 
MSRP: $29.00
Lawn & Garden Equipment Engine Oil Filter#114

Crankshaft/crankcase Diagram

In Stock
$14.14 | 
12% OFF 
Phone Price: $16.14
Lawn & Garden Equipment Engine Pre-Filter#124

Air filter Diagram

In Stock
$8.11 | 
11% OFF 
Phone Price: $9.11
Lawn & Garden Equipment Engine Carburetor Gasket#136

Carburetor Diagram

Lawn & garden equipment engine carburetor gasket

Part #951-12261
BEST SELLER
This item is not returnable
In Stock
$5.57 | 
15% OFF 
Phone Price: $6.57
Lawn & Garden Equipment Engine Intake Manifold Gasket#130

Air filter Diagram

Lawn tractor engine manifold gasket

Part #951-12258
Replaced by #951-12258A
?
Manufacturer substitution
This part replaces 951-12258. Substitute parts can look different from the original.
This item is not returnable
In Stock
$6.19 | 
14% OFF 
Phone Price: $7.19
Lawn & Garden Equipment Engine Voltage Regulator#85

Crankshaft/crankcase Diagram

In Stock
$61.39 | 
8% OFF 
Phone Price: $66.39
Lawn & Garden Equipment Engine Rocker Arm#148

Cylinder head Diagram

Lawn & garden equipment engine rocker arm

Part #951-11966
This item is not returnable
In Stock
$12.49 | 
14% OFF 
Phone Price: $14.49
Lawn & Garden Equipment Engine Stator#44

Flywheel/coil Diagram

In Stock
$71.93 | 
23% OFF 
MSRP: $93.00
Snowblower Fuel Drain Plug#DD

Carburetor Diagram

Snowblower fuel drain plug

Part #710-04938
This item is not returnable
In Stock
$5.66 | 
15% OFF 
Phone Price: $6.66

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