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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.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 111 parts  |
Lawn & Garden Equipment Engine Spark Plug 951-10292
#45

Engine 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
$6.47 | 
60% OFF MSRP : $16.00
In Stock
Lawn & Garden Equipment Engine Fuel Filter (replaces 751-10651) 951-10651

#NI01

All parts diagram

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

Part #951-10651

BEST SELLER
$21.20 | 
19% OFF Phone Price : $26.20
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
Primer 951-10639
#126

Engine diagram

Primer

Part #951-10639

Replaced by #951-10639A

?
Manufacturer substitution
This part replaces 951-10639. Substitute parts can look different from the original.
BEST SELLER
$26.71 | 
16% OFF Phone Price : $31.71
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.
BEST SELLER
This item is not returnable
$4.26 | 
36% OFF MSRP : $6.70
In Stock
Lawn Mower Fuel Cap 951-10649
#100

Engine diagram

Lawn mower fuel cap

Part #951-10649

Replaced by #951-12533

?
Manufacturer substitution
This part replaces 951-10649. Substitute parts can look different from the original.
This item is not returnable
$31.39 | 
14% OFF Phone Price : $36.39
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 Fuel Filter (replaces 751-10652) 951-10652
#101

Engine diagram

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

Engine diagram

Snowblower recoil starter assembly (replaces 751-11208)

Part #951-11208

$82.39 | 
31% OFF MSRP : $120.00
In Stock
Lawn & Garden Equipment Engine Mounting Screw 710-04915
#4

Engine diagram

Lawn & garden equipment engine mounting screw

Part #710-04915

This item is not returnable
$6.75 | 
13% OFF Phone Price : $7.75
In Stock

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