Bosch JS120N Operating/Safety Instructions Manual page 12

accessories. Such preventive safety measures reduce the risk of starting the tool
accidentally.
Plunger Speed
The jig saw cutting speed or stroke rate
required depends on the material being
cut, the type of blade being used, and
the feed rate preferred by the operator.
The best speed for a particular
application is largely determined by
experience though as a general rule,
slower speeds are for denser materials
and faster speeds for softer materials.
Note: that when the jig saw is used at
low speed settings for an extended
length of time, the motor temperature
will rise due to slower speeds of the
internal cooling fan. In such cases, it is
necessary to occasionally run the tool at
full speed for a few minutes to keep the
motor running at high efficiency.
Slide On-Off Switch
The tool is switched "ON" by the switch
button located at the side of the motor
housing. The switch locks in the "ON"
position, a convenience for continuous
operation (Fig. 1).
TO TURN THE TOOL "ON" slide the
switch button forward.
TO UNLOCK THE SWITCH, slide the
switch button backward.
Brake
When the trigger is released it activates
the electrical brake to stop the blade
quickly. This feature is especially useful
when making repetitive cuts.
Blade Orbit Selector Lever
Maximum cutting efficiency can be
obtained by adjusting the blade orbit
selector lever to suit the material being
cut.
The following chart will help you
determine which setting to use for your
application. This chart is intended as a
guideline only, and test cuts in scrap
material should be performed first to
determine the best setting.
Operating Instructions
Disconnect battery pack from tool or place the switch in the locked or
off position before making any assembly, adjustments or changing
Variable Speed Dial
Your jig saw is equipped with a variable
speed dial. The blade stroke rate may be
adjusted during cutting operation by
presetting the dial on or between any
one of the six numbers.
Setting
1
2
3
4
5
6
Work Light
Your tool is equipped with a work light
for better visibility during operation.
Once the tool has been turned on, the
light can be turned on by pressing the
LED switch. When the tool is switched
off, the light turns off. (Fig 1)
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SPM rating
(strokes per minute)
1500
1800
2050
2300
2550
2800
Setting O
Hard materials such as
metals or thin sheet metals.
This setting can be used
with knife blades, grit edge
blades, rasp work. and
down cutting blades.
Setting 1
Soft materials where cleaner
cutting or delicate scrolling
work is performed.
Setting 2
Medium density materials
such as harder woods or
particle board.
materials such as wood,
plastics, etc. and when fast
cutting is more important
than a clean cut.
Soft