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Little Giant
Farming

Model # 503216/3E-12NRY Official Little Giant pump

Here are the diagrams and repair parts for Official Little Giant 503216-3E-12NRY pump, 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 12 parts  |
Pump Volute Gasket 103601
#3

Replacement parts diagram

Pump volute gasket

Part #103601

The manufacturer no longer makes this part, and there's no substitute part

Pump Volute 103375
#1B

Replacement parts diagram

Pump volute

Part #103375

The manufacturer no longer makes this part, and there's no substitute part

Volute 103330
#1

Replacement parts diagram

Volute

Part #103330

The manufacturer no longer makes this part, and there's no substitute part

Backplate 103503
#4

Replacement parts diagram

Backplate

Part #103503

The manufacturer no longer makes this part, and there's no substitute part

Screw 902501
#6

Replacement parts diagram

Screw

Part #902501

The manufacturer no longer makes this part, and there's no substitute part

Impeller 104435
#2

Replacement parts diagram

Impeller

Part #104435

The manufacturer no longer makes this part, and there's no substitute part

Volute 103334
#1A

Replacement parts diagram

Volute

Part #103334

The manufacturer no longer makes this part, and there's no substitute part

Screen 102909
#5

Replacement parts diagram

Screen

Part #102909

The manufacturer no longer makes this part, and there's no substitute part

Backplate 103501
#4A

Replacement parts diagram

Backplate

Part #103501

The manufacturer no longer makes this part, and there's no substitute part

Snowblower Impeller 103437
#2A

Replacement parts diagram

Snowblower impeller

Part #103437

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for treadmills

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

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Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

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Repair difficulty
Time required
 45 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

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Repair difficulty
Time required
 15 minutes or less

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How to use a multimeter to test electrical parts video

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