Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
MTD
Lawn & Garden Engine

Model # 478-SU Official MTD engine

Here are the diagrams and repair parts for Official MTD 478-SU 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 111 parts  |
Kmart Lawn & Garden Equipment Engine Fuel Filter (replaces 751-10651) 951-10651

#NI01

All parts diagram

Kmart lawn & garden equipment engine fuel filter (replaces 751-10651)

Part #951-10651

BEST SELLER
$21.49 | 
22% OFF Phone Price : $27.49
In Stock
Key 731-05632

#NI02

All parts diagram

Key

Part #731-05632

Replaced by #951-10630

?
Manufacturer substitution
This part replaces 731-05632. Substitute parts can look different from the original.
BEST SELLER
$8.44 | 
11% OFF Phone Price : $9.44
In Stock
Lawn & Garden Equipment Engine Carburetor Float Bowl Gasket 951-11349
#132

Engine diagram

Lawn & garden equipment engine carburetor float bowl gasket

Part #951-11349

Replaced by #951-11349A

?
Manufacturer substitution
This part replaces 951-11349. Substitute parts can look different from the original.
This item is not returnable
$5.64 | 
15% OFF Phone Price : $6.64
In Stock
Snowblower Carburetor Gasket (replaces 751-11223) 951-11223
#66

Engine diagram

Snowblower carburetor gasket (replaces 751-11223)

Part #951-11223

This item is not returnable
$8.09 | 
11% OFF Phone Price : $9.09
In Stock
Snowblower Ignition Switch (replaces 751-10637, 925-04031a) 951-10637
#34

Engine diagram

Snowblower ignition switch (replaces 751-10637, 925-04031a)

Part #951-10637

This item is not returnable
$18.67 | 
10% OFF Phone Price : $20.67
In Stock
Kmart Snowblower Fuel Filter (replaces 751-10652) 951-10652
#101

Engine diagram

Kmart snowblower fuel filter (replaces 751-10652)

Part #951-10652

This item is not returnable
$14.03 | 
12% OFF Phone Price : $16.03
In Stock
Snowblower Throttle Knob (replaces 751-11224, 951-10757) 951-11224
#114

Engine diagram

Snowblower throttle knob (replaces 751-11224, 951-10757)

Part #951-11224

This item is not returnable
$12.09 | 
14% OFF Phone Price : $14.09
In Stock
Snowblower Carburetor 951-11193
#67

Engine diagram

Snowblower carburetor

Part #951-11193

Replaced by #951-14024A

?
Manufacturer substitution
This part replaces 951-11193. Substitute parts can look different from the original.
$98.29 | 
11% OFF Phone Price : $110.29
In Stock
Lawn & Garden Equipment Engine Flywheel Key 951-10307
#123

Engine 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
Craftsman Snowblower Recoil Starter Assembly (replaces 751-11208) 951-11208
#31

Engine diagram

Craftsman snowblower recoil starter assembly (replaces 751-11208)

Part #951-11208

$88.72 | 
6% OFF Phone Price : $94.72
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

Repair guides for electric wall ovens

How to replace a wall oven broil element

How to replace a wall oven broil element

Follow these step-by-step instructions to replace the broiler element in an electric oven.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a temperature sensor on an electric wall oven

How to replace a temperature sensor on an electric wall oven

These step-by-step instructions guide you through replacing a temperature sensing probe on an electric wall oven.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a wall oven hidden bake element

How to replace a wall oven hidden bake element

These step-by-step instructions guide you through replacing the hidden bake element.…

Read more
Repair difficulty
Time required
 30 minutes or less

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

View all
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.…

Read more
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.…

Read more

Parts & More