JET
7
Setup and Assembly
Any missing parts or damage should be reported
immediately to your JET
®
distributor. Do not use a
damaged tool. Read this instruction manual
thoroughly for operation, maintenance and safety
instructions.
Box contents:
1
Needle scaler
1
Needle cover with needles/shank/spring
1
Chisel
1
Hex wrench 6mm
1
Operation and parts manual
1
Warranty card
Operation
The needle scaler must be
properly lubricated before operation. See
“Lubrication” section.
Figure 1
1.
Rotate knurled collar until ball is aligned with
hole in collar.
2.
Insert needle shank into cylinder, aligning
notch in shank with ball.
3.
Rotate knurled collar 180-degrees in either
direction to secure needle shank.
4.
Install spring, needles and flange.
5.
Slide needle cover assembly onto cylinder,
pushing according to amount of spring
tension desired. Secure needle cover in
position by tightening screw with provided
wrench.
6.
Remove protective cap from air inlet (Figure
1). If an in-line oiler is not being used, add 4
or 5 drops of air tool oil (not included) into the
air inlet.
7.
Blow out air line to remove any dirt or
moisture, then connect air supply hose to
tool. Set air pressure to 90 psi.
IMPORTANT:
Connecting a quick-change
coupling directly to the tool 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.
Note: For best results, prepare work surface by
removing any oil, grease, or dirt before using
needle scaler. Clean only 6 to 8 inches of surface
area at one time, and make 2 or 3 passes.
8.
Hold needle scaler firmly with both hands, at
approximately 45 degree angle from work
surface.
9.
Place needles upon work surface and press
throttle lever. Pressure against throttle lever
determines speed of tool. Do not exert
excessive pressure against work surface –
let the tool do the work.
10. Release throttle lever to stop needle scaler.
The needles may be replaced with the provided
chisel. Reverse steps 1 through 5 above, and
install the chisel shank into the cylinder. Rotate
knurled collar 180-degrees to secure chisel.