KNOVA KN 7060 Manual page 5

BEFOrE yOu STArT – ASSEmBLy AND INSTALLATION
WARNING
Turn the power off and remove the plug from the outlet before changing the grinding wheels. When turning
the grinder on with a newly installed wheel, DO NOT STAND IN FRONT OF THE GRINDER. Stand to the side and allow
the grinder to run for at least one minute before proceeding to use it.
INSTALLING Or ChANGING ThE WhEEL
1. Use a screwdriver to loosen the wheel cover.
2. Fit an appropriately sized wrench on the spindle hex nut.
3. Loosen the wheel nut in a clockwise direction for the left side and
a counter-clockwise direction for the right side.
4. Remove the outer flange and grinding wheel. To remove the hex
nut, turn the wrench and nut until the wrench is resting on the work-
bench behind the tool.
5. Inspect the new wheel carefully to ensure there are no cracks,
chips or other damage.
6. Wipe the flange surfaces clean, and install the new wheel, flange
and the spindle hex nut.
7. To install a new grinding wheel, reverse the above procedure.
8. Be sure the grinding wheel and outer flange are properly seated
on the spindle shaft.
9. Replace the wheel cover and reposition the tool rest.
When turning the grinder on with a newly installed wheel, DO NOT
STAND IN FRONT OF THE GRINDER. Stand to the side and allow
the grinder to run for at least one minute before proceeding to use it.
TOOL rEST ADjuSTmENTS AND INSTALLATION
Tool rest (right)
Washer
Adjusting knob
Tool rest
bracket
Mount the tool rests to the work rest bracket using the knob and
washers.
Before tightening the knob, adjust the gap between the grinding
wheel and the work rest to a maximum of 1/8" (3.2 mm). Tighten
securely.
Adjustments
To prevent the workpiece from being pulled and caught between the
tool rest and the wheel, readjust the tool rest position whenever nec-
essary to maintain the 1/8" (3.2 mm) distance.
1. Loosen, but do not remove, the knob holding the tool rest arm.
2. Slide the tool rest in or out to achieve a 1/8" (3.2 mm) distance
from the grinding wheel surface.
3. Re-tighten the lock knob.
Pin
Washer
Star washer
Adjusting
knob
IMPORTANT! Do not overtighten the spindle hex nut, because this
may cause the wheel to crack.
CAUTION
DO NOT INSTALL OR USE A DAMAGED GRINDING
WHEEL. The force of rotation may cause a damaged wheel to fly
apart, and could injure operators or bystanders.
Grinding wheel
Outer flange
Nut
Wheel guard
cover
Using Your Bench Grinder
This Bench Grinder is ideal for use in sharpening chisels, axes and
other wood-cutting tools. It is also useful for repairing tips on screw-
drivers and drill bits or for removing excess metal burrs from pieces
of cut metal.
Carriage
With the proper accessories, this tool can be used for cleaning metal
bolt
surfaces using a wire brush or for buffing and polishing using a cloth
wheel.
ON/OFF
Tool
The rocker ON/OFF power switch is located on the front of the grinder.
rest
asembly
1. Press the side marked ON to turn the grinder on.
2. Press the side marked OFF to turn the grinder off.
Grinding
• Adjust the tool rest to accommodate large or unusually shaped
workpieces.
• Always keep the workpiece moving across the face of the grinding
wheel. Grinding continuously on the same spot on the wheel will cause
grooves to be worn into the wheel. The wheel may crack or become
damaged more easily, and grinding of other objects will be difficult.
• If the workpiece becomes hot, dip it into the water or oil to cool it.
• Always grind on the face of the wheel (around the diameter), NEV-
ER on the sides. Side pressure on grinding wheels can cause crack-
ing and damage.
• If the face of the grinding wheel is worn unevenly, becomes grooved,
or is no longer smooth and flat, the wheel should be reshaped with a
dressing tool (not supplied).
• If the diameter of the grinding wheel is no longer round, the wheel
should be reshaped with a dressing tool or replaced.
• If the surface of the wheel becomes loaded and dull with workpiece
material, the wheel should be cleaned with a dressing tool.
4
• After reshaping, always readjust the tool rests and spark arrestors.
Screw
Inner flange