Bosch 11263EVS Operating Instructions - Page 8
Selector Lever, Selector Lever - Vario-lock, Slip Clutch, Auxiliary Handle, Tool Tips, Drilling/ - rotary hammer
UPC - 000346341942
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To remove an accessory, pull and hold locking sleeve backward and pull bit forward (Fig. 2). All accessories should be wiped clean after removing. FIG. 2 DUST SHIELD LOCKING SLEEVE DUST SHIELD LOCKING SLEEVE SELECTOR LEVER The selector lever allows the tool to be set for various applications as listed in the following chart, (Fig. 3). When using demolition or chipping bits such as bull points, chisels, spades, gouges, etc. the "Hammer Only" mode must be selected. SELECTOR LEVER - "VARIO-LOCK" The vario-lock can be set in any one of twelve positions (30˚ increments). Choose a position which is best suited for your operation. The Vario-Lock position is intended for use with chipping bits such as bull points, spades, gouges, etc. Turn the selector lever, to the "vario-lock" setting. Next, rotate the locking sleeve, along with the accessory, to the desired position. Then turn the selector lever to the "hammer only" setting and slightly turn the locking sleeve to have it automatically lock into a definite position. SLIP CLUTCH The tool has a internal pre-set slip clutch. The output spindle will stop rotating if the accessory binds and overloads the tool. AUXILIARY HANDLE The tool must be supported with the auxiliary handle, which can be swiveled 360˚. To reposition and/or swivel the handle, loosen the hand grip, move the handle to the desired position along the barrel and securely retighten the hand grip (Fig. 1). "TOOL TIPS" For the best penetration rates in concrete, run the tool with a steady pressure, but do not use excessive force as this will decrease the efficiency of the tool. All grease packed hammers require a short period of time to warm up. Depending on the room temperature, this time may vary from approximately 15 seconds (90˚F) to 2 minutes (32˚F). A new hammer requires a break-in period before full performance is realized. This period may require up to 5 hours of operation. A rotary hammer is likely to be the most expensive portable tool at the construction job. The long wear and efficient operation of the BOSCH hammers will more than justify the cost for tools of this type. As earlier pointed out, sharp accessories as well as clean air vents are necessary for efficient operation. Establish and follow a set maintenance program. FIG. 3 Drilling/Hammering: used for drilling with solid carbide bits and core bits Vario-Lock: allows chisel to be set in one of 12 positions (right or left "0" position) -8- Hammering Only: used for chipping and demolition work