Model No. 900-360
Electronic Digital Rockwell tester

1. Loosen 4-nuts on bottom of crate. Lift the crate off of the platform being careful not to scratch side of tester.
2. Remove the tool kit from the platform.
3. Remove plastic dust cover
4. Remove string holding handles and top cover
5. Lift top cover straight up.
6. Remove rubber band holding indicator lever and discard
7. Remove back cover by removing 2-phillip head screws from top/bottom
8. Carefully remove strings that are holding the weight bar to the loading arm
9. Remove the weight bar from the loading arm by lifting the hook of the bar from the loop on the arm.
10. Remove the 2-nuts at the bottom of the bar.
11. Open test kit and remove the 3 weights. Clean any oil/grease from weights
12. Take the round weight marked “1” and slide up the bottom of the weight bar and proceed to put on both nuts.
13. Carefully place weight bar back in loop of loading arm with the hook facing the front of the machine.
14. Place weight “2” and place on the middle section of the weight bar keeping the flat part to the rear of the machine. Place weight “3” on the top part of the weight bar/flat to rear.
15. Install rear cover with 2-screws
16. Install top cover (place straight down)
17. Lower rotary handle and remove black plastic shaft protector.
18. Choose applicable work table and clean off grease. Install on machine.
19. Remove diamond penetrator from case and install in penetrator shaft making sure the flat of the penetrator is facing the set screw. Be sure penetrator contacts the bottom of shaft flush. Do not overtighten!
20. Set weight selector on correct weight.
21. Turn on power. The light will shine on the test surface.
22. Press the “SC” button to choose your desired hardness scale
23. Place the test block on the anvil and rotate handle until the block touches the penetrator. At that time, continue turning the handle until the digital dsiplay reaches “600”. At that time, the machine will lock the table and begin testing. You can take your reading when the machine releases the weight.
24. To print the readings, you must push the “PR” button. Minimum of 3 tests need  to be performed before it can print. The 1st test will not show up!