Steps to Take Before Sharpening Your Lawn Mower Blades with a Blade Grinder
Step 1: Check the work area.
Make sure the grinder is properly supported on a flat and level work surface.
Step 2: Clean your work area.
Make sure that there are no:
- Flammable materials such as shop rags, gas cans and other solvents.
- Objects or people nearby who are positioned close enough to be hit by sparks or debris.
- Loose objects (including your clothing or hair) that could get caught in the grinding wheel.
Step 3: Inspect all aspects of the grinder.
If any of the following questions can be answered with a “yes”, do not operate the grinder.
- Are there breaks in the insulation or exposed wires on the power cord?
- Is the cord’s ground terminal broken or damaged?
- Is the stone cracked or chipped?
- Are any of the guards missing or damaged?
Step 4: Check the tongue guards for clearance.
Tongue guards on the top of the wheel should be positioned no more than ¼ of an inch away from the stone.
The bottom guard which connects to the work table should be positioned no more than 1/8 of an inch away of the stone.
If the clearances aren’t adjusted to the specifications above, do not use the grinder.
Follow these steps to adjust the guards:
- Check that the power is off and the lock is removed before adjusting the guards.
- To adjust the guards, loosen the nuts which hold them in place.
- Slide the guard toward the stone within the proper dimension. (If you don’t know what this distance should be or the stone is so worn you can’t achieve the proper distance, don’t use the grinder. Only continue after you have confirmed that the tongue guards are properly adjusted.)
Tip: Tongue guards will only need readjustment when the stone diameter decreases with wear.