Porter-Cable 987 - Manual (Page 9)

9
SWITCH OPERATION
Squeeze trigger switch (A) Fig. 3 to start motor. Release trigger to stop motor. As
the trigger is squeezed, the motor speed increases.
A low volume, high pitched tone may be heard while the switch is in
the variable speed mode. This is normal.
FORWARD/REVERSE
• Make sure trigger switch (A) Fig. 3
is in “OFF” position before attemp-
ting to change direction of rotation.
• Push button (B) Fig. 3 toward left
side of drill for FORWARD.
• Push button (B) Fig. 3 toward right
side of drill for REVERSE rotation.
• Place button (B) Fig. 3 in center
position to lock trigger switch in
“OFF” position.
ELECTRIC BRAKE
When the trigger switch is released, an electric brake automatically engages
to stop spindle rotation.
INSTALLING AND REMOVING DRILL AND SCREWDRIVER BITS
Always set reversing button to center (locked “OFF”)
position when installing and removing bits.
1. The three-jaw chuck is designed for self-centering of the bit. Open jaws
large enough by 5REWd8(nringsle(evh (A) Fig.4 couenter)17.6c(locwisme, whenviewrins)]TJT*-0.0064 Tw[ the chuckf r)17.7(mf the bie eed,sof tats)]TJT*0.0278 Tw[ bieschak caon bn inertnedleailyT
s.
whileholdting the bieswih tons