5
Operation
The box should include 1 Angle Grinder, 1
Handle and 2 Wrenches. Any missing parts
should be reported to your JET distributor. Read
this instruction manual thoroughly for operation,
maintenance and safety instructions.
1. Lubricate the angle grinder before operating.
See “Maintenance” section for oiling
instructions.
2. Assemble the handle to the threaded hole of
the angle grinder.
3. The disc guard can be rotated left or right.
Remove the socket head cap screws (Figure
1) with a 4mm hex wrench, and re-position
the guard. All four of the socket head cap
screws must be installed and tightened
before operating the grinder.
Figure 1
4. Remove the flange nut (Figure 1) and mount
a 4-1/2” or 5” diameter grinder wheel (not
provided) on the spindle. Re-install and
securely tighten the flange nut against the
grinding wheel, using the provided pin
wrench while holding the other wrench on
the flats of the spindle as shown.
Only use grinding wheels
that have an RPM rating equal to or greater
than the angle grinder itself.
5. Remove the cap from the grinder’s air inlet
(Figure 2) and connect the air supply hose
to the grinder. Set the air pressure to 90 psi.
IMPORTANT: Connecting a quick-change
coupling directly to the angle grinder is not
recommended, as vibration may cause the
connection to fail. Instead, add a leader
hose and install any quick-change couplings
farther down the line.
6. Push forward the throttle lever lock and
press up on the throttle lever (Figure 2).
How far the throttle lever is pressed
determines rotation speed.
Maintenance
The angle grinder should be lubricated daily (or
before each use) with air tool oil. During
continual operation, it should be oiled every 1 to
2 hours. This may be done using an in-line oiler,
or manually. If done manually, proceed as
follows:
1. Disconnect grinder from air supply.
2. Place a few drops of air tool oil* into the air
inlet (Figure 2).
(*Not included. Air tool oil may be purchased
from your JET dealer, or is available at
major tool and hardware stores. SAE #10-
weight oil may be used as a substitute. Do
not use detergent oil.)
Figure 2
3. Connect the grinder to the air supply. Run
the tool without load for a few seconds to
distribute the oil through the tool. NOTE:
Any excess oil may be propelled from the
spindle area – keep it pointed in a safe
direction.
4. When you are finished operating the grinder,
before storing it disconnect the air hose and
place 4 or 5 drops of air tool oil into the air
inlet, then re-connect and run the tool to
distribute the oil. This will prolong the life of
your grinder.
5. Avoid storing the grinder in a humid
environment which promotes rusting of
internal mechanisms; and always oil it
before storage.
