Bosch Power Tools 11258VSRC manual Operating Instructions

BM 1619P00836 12-06 1/5/07 9:43 AM Page 7

		Operating Instructions
	VARIABLE SPEED CONTROLLED		the clutch automatically resets. If you
	TRIGGER SWITCH		experience bit binding and clutch begins to
Your tool is equipped with a variable speed			slip, immediately turn the tool "OFF" and
trigger switch. The tool speed can be			correct the condition leading to the bit binding.
controlled from the minimum to the maximum					AUXILIARY HANDLE
nameplate RPM by the pressure you apply to
the trigger. Apply more pressure to increase			The auxiliary handle will provide additional
the speed and release pressure to decrease			control, support and guidance for the tool. The
speed. This accurate speed control enables			handle is adjustable around the 360° handle
you to drill without center punching. It also			collar mount. To mount, loosen wing knob and
permits you to use as a power screwdriver.			slide handle completely over chuck onto the
Bits are available for driving screws as well as			collar mount and tighten wing knob (Fig. 3).
running bolts and nuts.				WING
	REVERSING SWITCH BUTTON			KNOB
The reversing switch button is located above
the trigger switch and is used to reverse
			FIG. 3
rotation of the bit.
For forward rotation, (with the chuck pointed
away from you) move button to the far left. For
reverse rotation move the button to the far
right. (Fig. 2)		Do not change direction of
!	CAUTION		AUXILIARY
		rotation until the tool comes to
a complete stop. Shifting during rotation of the			HANDLE
chuck can cause damage to the tool.

FIG. 2

REVERSING

SWITCH

BUTTON

SLIP CLUTCH

The tool has an internal preset clutch. The clutch is set such that sufficient force is transmitted to the bit for most drilling conditions but it will slip when bit binds in the hole or the tool is overloaded. Be aware that due to required clutch setting, you may experience a torque reaction an instant before the clutch slips. This torque reaction will twist the body of the rotary hammer in the opposite direction as the bit rotates, i.e., counterclockwise. As clutch is slipping, the bit will most likely stop rotating. When the binding force on the bit is removed

DEPTH GAUGE

Your drilling depth can be pre-set and/or repeated by using the depth gauge.

Setting depth: After the auxiliary handle is installed, make sure the accessory has been fully inserted into the tool holder before setting the depth gauge (Fig. 4).

To adjust depth, push down on the depth gauge release lever, slide the depth gauge to desired depth and release pressure on lever to lock the depth gauge in place (Fig. 4).

DEPTH

GAUGE

FIG. 4

DEPTH

GAUGE

RELEASE

LEVER

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