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Operating Instructions 

 

Ironmaster Quick-Lock Dumbells 

 

Congratulations on your purchase of this fine Ironmaster product.  For any technical questions or support 
please contact us at 1-800-533-3339.  Be sure to read and understand the operating instructions to avoid 
injury.   
 
Here is the list of items included: 

1.  Dumbell handle with locking screws – 2 ea. 
2.  Dumbell rack – (assembly required) 
3.  2 boxes of weight plates with the following 

a.  24 ea. 5 lb weight plates 
b.  4 ea. 2.5 lb weight plates 

 

Description: 

This adjustable dumbell system is designed to change from 5 lbs to 75 lbs quickly and easily.  The 
handles weight 5 lbs without the locking screws and 10 lbs with the lock screws in place.  The larger 
weight plates are 5 lbs each and the thinner plates are 2 ½ lbs each.   
 

Weight Change: 

The basic procedure to change dumbell weights is to simply open the locking screws (4” diameter disc 
with knurled grip and 1” diameter partially threaded shaft) by turning the disc until the “OPEN” arrow 
points up toward the notch indicator on the handles.  The notch is found on one side of the square, 
chrome backing plates that are welded to the handle grips.  The notch should always be the top of the 
handle when set down on the rack.   

 

When the arrow on the locking screw is pointed up at the notch, this is the open position where you can 
pull the locking screw directly out of the handle.  After you remove the locking screw the weight plates 
can then be added or removed to the desired weight.  Use any combination of 5 lb and 2.5 lb plates on 
each end of the handles.  The weight plates are formed so they stack into each other and into the handle 
backing plate. 

 It is important to stack the weight plates all the same direction so they interlock with the 

name “Ironmaster” facing out.

 

 

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