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Bosch PS21-2A Instrucciones De Funcionamiento Y Seguridad página 10

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2610051962.qxp_PS21 1/16/19 10:09 AM Page 10
GEAR SHIFTING
Your tool is equipped with two separate gear
ranges, low gear and high gear. Low gear
provides high-torque and slower drilling
speeds for heavy duty work or for driving
screws. High gear provides faster speeds for
drilling lighter work. To change speeds slide
switch, to the high or low position (Fig. 1).
ATTENTION: If your tool appears to be
running, but the chuck will not turn, check to
make sure the gear shifting switch is pushed
fully into desired setting.
ADJUSTABLE CLUTCH
Your tool features 20 clutch settings. Output
torque will increase as the clutch ring, is
rotated from 1 to 19. The drill "
position will lock up the clutch to permit
drilling and driving heavyduty work (Fig. 1).
INSERTING AND RELEASING
BATTERY PACK
Release battery pack from tool by pressing on
both sides of the battery release tabs and pull
downward (Fig. 4).
To insert battery, align battery and slide
battery pack into tool until it locks into position.
Do not force.
damaged, do not insert into tool. Battery can
fall out during operation.
You will extend the life of your bits and do
neater work if you always put the bit in
contact with the work before pulling the
trigger. During the oper a tion, hold the tool
firmly and exert light, steady pressure. Too
much pressure at low speed will stall the tool.
Too little pressure will keep the bit from
cutting and cause excess friction by sliding
over the surface. This can be damaging to
both tool and bit.
DRILLING WITH VARIABLE SPEED
The trigger controlled variable speed feature
will eliminate the need for center punches in
hard materials. The variable speed trigger
allows you to slowly increase RPM. By using
If battery release tabs are
cracked or otherwise
Operating Tips
When the trigger switch is released it
activates the brake to stop the chuck quickly.
This is especially useful in the repetitive
driving and removal of screws.
AUTOLOCK™
Your tool is equipped with an automatic locking
system. This feature will lock the bit holder in
one position when the trigger switch is
released. This will allow you to tighten or loosen
a nut or screw by rotating the tool by hand with
the switch off. This is convenient when higher
turning torque is needed.
BUILT IN WORK LIGHT
Your tool is also equipped with a light that turns
"
on automatically when the switch is activated,
for better visibility when drilling/driving (Fig. 1).
a slow starting speed, you are able to keep
the bit from "wander ing". You can increase
the speed as the bit "bites" into the work by
squeezing the trigger.
DRIVING WITH VARIABLE SPEED
Variable speed drills will double as a power
screwdriver by using a screwdriver bit in the
drill mode. The technique is to start slowly,
increasing the speed as the screw runs
down. Set the screw snug ly by slowing to a
stop. Prior to driving screws, pilot and
clearance holes should be drilled.
-10-
BRAKE
FIG. 4
BATTERY
RELEASE
TABS

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Ps21