Proform
Weight System

Model #831153320 Official Proform c840 stepper

Here are the diagrams and repair parts for Proform 831153320 c840 stepper, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • 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.

Owner’s manual

Showing 10 of 141 parts

Exercise Equipment Snap Hook

#134

All parts Diagram

Exercise equipment snap hook

Part #103087
This item is not returnable
In Stock
$4.19 | 
19% OFF 
Phone Price: $5.19
Elliptical Nut

#96

All parts Diagram

Elliptical nut

Part #012042
This item is not returnable
In Stock
$2.16
Elliptical Washer

#99

All parts Diagram

Elliptical washer

Part #014132
This item is not returnable
In Stock
$2.16
Exercise Equipment Flat Washer

#100

All parts Diagram

Exercise equipment flat washer

Part #014073
This item is not returnable
In Stock
$2.16
Exercise Equipment Push Nut, 1-in

#93

All parts Diagram

Exercise equipment push nut, 1-in

Part #108778
This item is not returnable
In Stock
$2.16
Weight System Backrest Frame End Cap, 25-mm

#31

All parts Diagram

Weight system backrest frame end cap, 25-mm

Part #186253
This item is not returnable
In Stock
$2.49 | 
29% OFF 
Phone Price: $3.49
Weight System Lower Cable

#82

All parts Diagram

In Stock
$38.99
Exercise Equipment Screw

#107

All parts Diagram

Exercise equipment screw

Part #144985
This item is not returnable
In Stock
$2.49 | 
29% OFF 
Phone Price: $3.49
Weight System Chain, 16-in

#78

All parts Diagram

In Stock
$10.99
Small Foam Pad

#18

All parts Diagram

Small foam pad

Part #199063
In Stock
$11.99

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