Loading blades into a fatmax 10-777 - Stanley Fatmax Xtreme Retractable Utility Knife

SOURCE: Just purchased a Stanley FatMax 10-778 retractable

1. Make sure the side lock is unlocked.
2. Push the thumb tab all the way to the front of the blade handle.
3. Insert the blade in the opening, you may notice two notches on the top side of the blade.
4. Press the small blade release button as you slide the blade into the knife. You may have to jiggle up and down to get the two notches on the blade fully into the handle.

If properly inserted, the exposed area of the blade should look very close to an equilateral triangle.

make sure both notches of the blade are inside the handle. They notch into the thumb lever.

good luck

Testimonial: "Thanks so much!"

SOURCE: describe how you put a blade in FatMax model

The model in your picture is a fixed blade utility knife (model 10-816). Your question asks for instructions for model 10-778, which is a retractable knife. I'll guide you through the 10-778 which you asked for, if you need instructions for the pictured 10-816 please re-post the question.

Push the thumb slide forward as far as it goes exposing the blade. Press the blade change button on the side of the knife (the small button on the left side near the blade) and pull out the old blade.
Insert the new blade and slide thumb slide back to fully engage blade in the internal lock.

SOURCE: When I inserted blade into

Hi Betsy,

Please go to this webpage and read the rants about this product.
Down towards the bottom are reviews written mostly by contractors and such. Review number 3 addresses your problems exactly. http://www.crunchgear.com/2008/12/05/review-stanley-fatmax-utility-knives/

Good luck

Handie Andie