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Weed Eater
Front-Engine Lawn Tractor

Model # HD3Q4E9A Official Weed Eater tractor

Here are the diagrams and repair parts for Official Weed Eater HD3Q4E9A tractor, as well as links to manuals and error code tables, if available.

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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.

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Model diagram and schematic

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Showing 10 of 437 parts  |
Blade 42" 138498
#11

42" mower deck diagram

Blade 42"

Part #138498

Replaced by #532138971

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Manufacturer substitution
This part replaces 138498. Substitute parts can look different from the original.
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Hub Cap 104757X
#11

Wheels and tires diagram

Hub cap

Part #104757X

Replaced by #532104757

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Manufacturer substitution
This part replaces 104757X. Substitute parts can look different from the original.
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$5.31 | 
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Lawn Tractor Deflector Shield 130968
#27

42" mower deck diagram

Lawn tractor deflector shield

Part #130968

Replaced by #532130968

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Manufacturer substitution
This part replaces 130968. Substitute parts can look different from the original.
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Lawn Tractor Bearing 3366R
#9

Steering assembly diagram

Lawn tractor bearing

Part #3366R

Replaced by #532003366

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Manufacturer substitution
This part replaces 3366R. Substitute parts can look different from the original.
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Fuel Cap Assembly 140527
#32

Engine diagram

Fuel cap assembly

Part #140527

Replaced by #581075501

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Manufacturer substitution
This part replaces 140527. Substitute parts can look different from the original.
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Ammeter 121433X
#45

Electrical diagram

Ammeter

Part #121433X

Replaced by #532122822

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Manufacturer substitution
This part replaces 121433X. Substitute parts can look different from the original.
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Lawn & Garden Equipment Lock Nut 73800400
#51

Chassis and enclosures diagram

Lawn & garden equipment lock nut

Part #73800400

Replaced by #582478602

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Manufacturer substitution
This part replaces 73800400. Substitute parts can look different from the original.
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Wizard Lawn Tractor Axle Flange Bearing (replaces 532009040, 5320090-40, 532124959, 577203109, 5920h, 5920h1, P-1246, P-1622) 9040H
#7

Wheels and tires diagram

Wizard lawn tractor axle flange bearing (replaces 532009040, 5320090-40, 532124959, 577203109, 5920h, 5920h1, p-1246, p-1622)

Part #9040H

Replaced by #532009040

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Manufacturer substitution
This part replaces 9040H. Substitute parts can look different from the original.
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Fuel Line 137040
#37

Engine diagram

Fuel line

Part #137040

Replaced by #587044820

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Manufacturer substitution
This part replaces 137040. Substitute parts can look different from the original.
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Front Link 127218
#15

Lift diagram

Front link

Part #127218

Replaced by #532127218

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Manufacturer substitution
This part replaces 127218. Substitute parts can look different from the original.
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$19.98 | 
9% OFF Phone Price : $21.98
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How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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Why is the steering loose on my riding mower?

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

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Why won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

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How do I fix a flat tire on my riding mower?

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

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Why is my riding mower leaking oil or gas?

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

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