CAN'T LOAD STAPLER Hava a power master stapler model apm125n but can;t re load staples as have losr instructions

It is actually made by Stanley and has a Master Mechanic badge on it.

https://www.google.com/search?q=TRE+300+power+stapler%2C+staples

The Stanley TRE300 stapler and it's staples have been discontinued and are no longer available. However, the Sears brand extra wide crown staples will fit this stapler.

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Stanley electric stapler/brad nailer - YouTube

? 5:06
https://www.youtube.com/watch?v=Zbgt2UXpS-M
Dec 29, 2013 - Uploaded by Tindlez
How to load staples and brad nails in Stanley electric staplermodel TREE550 ... Stanley SharpShooter Manual Staple and Brad Gun review ...

Stanley Electric Staple/Nail Gun (TRE550) - YouTube

? 5:04
https://www.youtube.com/watch?v=6JTZJjQ3wlA
Jan 5, 2015 - Uploaded by HowToWith GEO
This video tests the Stanley electric stapler and nail gun. Model TRE550. This video will test both staples and brad type nails. ...Stanley SharpShooter Manual Staple and Brad Gun review - Duration: 9:35. Unpack Guy 43,106 ...

Safety Tips for an Electric Stapler : How to Load Staples into ...

? 1:01
https://www.youtube.com/watch?v=dMsdmYBoojU
Feb 5, 2008 - Uploaded by expertvillage
Learn how to load staples into an electric stapler in this free educational video ... Stanley Electric Staple/Nail Gun (TRE550) - Duration: 5:04.

It will probably have a release at the bottom rear of the stapler. Just push the release in and down to release the rod/spring assembly (the release catch may be silver in color). Drop in a stick of staples the reinsert the rod/spring and reengage the release.

Swingline heavy duty staplers provide the power to staple up to 120 pages of 20-lb. paper easily and consistently. The all-metal construction of these staplers makes them an indispensible office tool. However, the way to load staples into a Swingline heavy duty stapler differs from the method for loading most other manual staplers and can cause a little confusion.
Difficulty:Easy Instructions

1. • 1 Remove the follow block at the back of the stapler by pushing the mechanism in, lifting the block up over the holding hooks and sliding it out from the stapler. The follow block is the spring-loaded mechanism that holds the staples in place within the stapler.
     
   • 2 Load the heavy-duty staples into the staple tray.
     
   • 3 Replace the follow block by inserting it back into the stapler and locking it into place over the holding hooks.
     

Read more: How to Load a Swingline Heavy Duty Stapler ' eHow.com http://www.ehow.com/how_5822366_load-swingline-heavy-duty-stapler.html#ixzz1bVwG5bBn

Follow these instructions:

http://www.paperpro.com/home/product_info.php?tid=78

1. Remove the follow block at the back of the stapler by pushing the mechanism in, lifting the block up over the holding hooks and sliding it out from the stapler. The follow block is the spring-loaded mechanism that holds the staples in place within the stapler.
2. Load the heavy duty staples into tray.
3. Replace the follow block by inserting it back into the stapler and locking it into place over the holding hooks.

Resource 1 : eHow Article

Here are the scanned images from the Black & Decker 5700 Powershot Instruction Manual. These are just the instructions and corresponding illustrations for how to load the stapler, but the full instruction manual is available here:
http://servicenet.blackanddecker.com/Products/Detail/5700#

Good luck!

I was having the problems everyone listed... with the staples loading & firing... I guess the instructions are lousy .. should be ON THE PACKAGE to make it clear.. but.. on the stapler itself on the bottom.. it explains how to correctly load.. you don't put the staples on the piece that slides out.. you slide it out, load the staples in the open tunnel ..then slide the piece back.. that piece is the spring loader... since i finally figured it out ( by coincidence that I turned it over & noticed some faint words printed) - it works PERFECT every time! great little stapler... please fix your directions... seems to be a common misunderstanding!!!

You pull up and back on the stapler head. Then pull out the spring that keeps the staples loaded. Be careful as the spring is very strong. Then put in the staples and put the spring back in behind the staples.