MTD
Lawn & Garden Engine

Model # 4P90HU Official MTD engine

Here are the diagrams and repair parts for Official MTD 4P90HU engine, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 170 parts  |

Lawn & Garden Equipment Engine Spark Plug 951-10292
#160

Cylinder head/camshaft diagram

Lawn & garden equipment engine spark plug

Part #951-10292

Replaced by #951-10292A

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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
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Lawn & Garden Equipment Engine Oil Filter 951-12690
#114

Crankshaft/gear diagram

Lawn & garden equipment engine oil filter

Part #951-12690

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$14.14
12% OFF Phone Price : $16.14
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Lawn & Garden Equipment Engine Air Filter 951-12260
#126

Air filter/manifold diagram

Lawn & garden equipment engine air filter

Part #951-12260

Replaced by #937-05065A

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Manufacturer substitution
This part replaces 951-12260. Substitute parts can look different from the original.
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$22.20
23% OFF MSRP : $29.00
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Lawn & Garden Equipment Engine Carburetor (replaces 951-12771, 951-12823) 951-12771A
#131

Carburetor diagram

Lawn & garden equipment engine carburetor (replaces 951-12771, 951-12823)

Part #951-12771A

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$128.52
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Lawn & Garden Equipment Engine Pre-filter 951-12256
#124

Air filter/manifold diagram

Lawn & garden equipment engine pre-filter

Part #951-12256

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$8.33
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Lawn & Garden Equipment Engine Ignition Coil 951-12220
#39

Flywheel/coil diagram

Lawn & garden equipment engine ignition coil

Part #951-12220

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$85.19
23% OFF MSRP : $110.00
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Lawn & Garden Equipment Engine Carburetor Gasket 951-12261
#136

Carburetor diagram

Lawn & garden equipment engine carburetor gasket

Part #951-12261

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Lawn & Garden Equipment Engine Carburetor Insulator Gasket 951-12263
#138

Carburetor diagram

Lawn & garden equipment engine carburetor insulator gasket

Part #951-12263

This item is not returnable
$6.35
14% OFF Phone Price : $7.35
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Lawn & Garden Equipment Engine Starter Motor 951-12207
#9

Starter diagram

Lawn & garden equipment engine starter motor

Part #951-12207

$214.67
$10.00 OFF Phone Price : $224.67
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Lawn & Garden Equipment Engine Voltage Regulator 951-12242
#85

Crankshaft/gear diagram

Lawn & garden equipment engine voltage regulator

Part #951-12242

$63.45
7% OFF Phone Price : $68.45
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Symptoms for gas leaf blowers

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Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

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Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up…

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor…

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Repair difficulty
Time required
 60 minutes or less
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How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow …

Repair difficulty
Time required
 60 minutes or less

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