John Deere ET-3507-J - Manual (Page 11)

1/2-Inch Hammer Drill Operator's Manual 11
Operation
PRE-OPERATION (CONTINUED):
8.
Fixing the side handle (Fig. 3):
Loosen the knob bolt on the side handle, and
attach the side handle to the gear cover in a
position convenient for drilling. Match the
projecting part of the handle to the groove on
the gear cover, and firmly tighten the knob bolt.
To remove the side handle, loosen the knob
bolt and rotate the handle.
To attach a depth gauge on the side handle,
insert the gauge into the U-shaped groove on
the side handle, adjust the position of the depth
gauge in accordance with the desired depth of
the hole, and firmly tighten the wing bolt.
9. IMPACT to ROTATION change over (Fig. 4):
The Hammer Drill can be switched from
IMPACT (impact plus rotation) to ROTATION
(rotation only) by rotating the change lever
(Fig. 1). When boring concrete, stone, tile or
similar hard materials, rotating the change lever
to IMPACT side. The drill head impacts against
the material while continuing to rotate.
When boring metal, wood or plastic, rotating
the change lever to ROTATION side. The drill
rotates as an ordinary electric drill.
CAUTION: DO NOT USE THE HAMMER
DRILL IN THE IMPACT
FUNCTION IF THE
MATERIAL CAN BE BORED
BY ROTATION ONLY. SUCH
ACTION WILL NOT ONLY
REDUCE DRILL EFFICIENCY,
BUT MAY ALSO DAMAGE THE
DRILL TIP.
NOTE: The change lever may not rotate smoothly
when changing from hammer drill mode to
drill mode (Fig. 4).
In this case, switch ON and operate the
machine for few seconds. The spindle
shaft will then be pushed forward, and the
change lever can be moved smoothly.
(Fig. 3)
(Fig. 4)
10. High-speed/Low-speed change over:
To change speed, rotate the gear shift dial as indicated by the arrow in Fig. 5. The
numeral "1" engraved on the drill body denotes low speed, the numeral "2"
denotes high speed.
(Fig. 5)