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Fitness & Exercise

Model # EB7721E Official Proform 550 dual-action ergometer

Here are the diagrams and repair parts for Official Proform EB7721E 550 dual-action ergometer, 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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Model diagram and schematic

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ALL PARTS
Showing 10 of 88 parts  |
Carriage Bolt 013011
#2

Unit parts diagram

Carriage bolt

Part #013011

This item is not returnable
$4.99
In Stock
Nordictrack Exercise Equipment Nut 012002
Nordictrack exercise equipment nut

Part #012002

This item is not returnable
$2.16
In Stock
Exercise Equipment Nut 012012

#NI

All parts diagram

Exercise equipment nut

Part #012012

This item is not returnable
$2.16
In Stock
Nut,crank,w/ 012011

#NI

All parts diagram

Nut,crank,w/

Part #012011

This item is not returnable
$2.16
In Stock
Wshr,flat,zp 014008

#NI

All parts diagram

Wshr,flat,zp

Part #014008

This item is not returnable
$2.16
In Stock
Carriage Bolt 013001
#10A

Unit parts diagram

Carriage bolt

Part #013001

This item is not returnable
$2.16
In Stock
Weider Screw,shcs,z 013018
#39

Unit parts diagram

Weider screw,shcs,z

Part #013018

This item is not returnable
$2.16
In Stock
Wshr,keyed,z 014009

#NI

All parts diagram

Wshr,keyed,z

Part #014009

This item is not returnable
$2.16
In Stock
Nut,crank,w/ 012010

#NI

All parts diagram

Nut,crank,w/

Part #012010

This item is not returnable
$2.16
In Stock
Weider Exercise Equipment Screw 013028
#25A

Unit parts diagram

Weider exercise equipment screw

Part #013028

This item is not returnable
$2.16
In Stock

Symptoms for elliptical machines

Choose a symptom to see related elliptical repairs.

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Why does my elliptical rock?

Main causes: leveling feet need to be adjusted, loose frame bolts, unstable flooring…

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Why won't my elliptical's console turn on?

Main causes: dead batteries, power supply failure, bad wiring connections, faulty control console…

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How do I tighten elliptical handle bars?

Main causes: loose fastening bolts, damaged handle bars…

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Why is my elliptical's console display dim?

Main causes: weak batteries, loose wires, faulty control console…

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Why won't my elliptical's pedal resistance change?

Main causes: bad resistance motor, faulty control console, wiring failure…

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Why does my elliptical display the wrong speed?

Main causes: faulty reed switch, reed switch needs adjustment, wiring failure, bad control console…

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Why does my elliptical make squeaking noises?

Main cause: lack of lubrication on pivot points…

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Why can't my elliptical detect my heart rate?

Main causes: dirty heart rate sensors, wiring failure, bad control console…

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Repair guides for elliptical machines

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

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How to replace an elliptical resistance motor

How to replace an elliptical resistance motor

If the resistance motor is not changing the resistance on your elliptical, replace it using these steps.…

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Repair difficulty
Time required
 15 minutes or less
How to adjust an elliptical reed switch

How to adjust an elliptical reed switch

If the console doesn't display the correct speed on your elliptical, adjust the reed switch using these steps.…

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Repair difficulty
Time required
 15 minutes or less
How to replace an elliptical console

How to replace an elliptical console

If the console on your elliptical doesn't work, replace it by following these 3 easy steps.…

Read more
Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your fitness & exercise

Use the advice and tips in these articles and videos to get the most out of your elliptical.

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

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