Electronic Feedback Circuitry (Efc); Installing Accessories; Removing Accessories; "Vario-Lock"- Selector Ring - Bosch 11316EVS Operating Information

ELECTRONIC FEEDBACK CIRCUITRY (EFC)

The internal electronic feedback system provides a "soft start", which will reduce the stresses that occur from a high
torque start. The system also helps to keep the preselected impact rate and rotating speed virtually constant between no-
load and load conditions.

INSTALLING ACCESSORIES

Clean the insert shank end of the accessory to remove any debris, then lightly grease with a light oil or lubricant. Insert
accessory into the tool holder through the dust shield, while twisting and pushing inward until it locks automatically into
place. Pull outward on the accessory to be certain it is locked into the tool holder (fig. 2). NOTE: The high efficiency
available from the rotary hammers can only be obtained if sharp and undamaged accessories are used. The "cost" to
maintain sharp and undamaged accessories is more than offset by the "time saved" in operating the tool with sharp
accessories.

REMOVING ACCESSORIES

Warning: Accessories may be hot after use. Avoid contact with skin and use proper protective gloves or cloth to
remove. To remove an accessory, pull and hold locking sleeve backward and pull bit forward. All accessories should
be wiped clean after removing.

"VARIO-LOCK"- SELECTOR RING

The vario-lock selector ring can be set in any one of twelve (30 degree increments) positions. Choose a position which is
best suited for your operation. To adjust, pull the selector ring forward and hold firmly, then turn both the accessory and
the selector ring to the desired position. Release the selector ring and turn the accessory slightly until it locks in place.