Bosch 1035VSR Operating Instructions - Page 7

Operating Instructions TRIGGER CONTROLLED VARIABLE SPEED Your tool is equipped with a variable speed trigger switch. The tool speed can be controlled from minimum to maximum nameplate rated RPM by the pressure you apply to the trigger. Apply more pressure to increase the speed and release pressure to decrease speed (Fig. 1). "LOCK-ON" BUTTON The "Lock-ON" button, located in the handle of your tool allows for continuous operation at maximum RPM without holding the trigger. TO LOCK TRIGGER "ON": squeeze trigger, depress button and release trigger. TO UNLOCK THE TRIGGER: squeeze trigger and release it without depressing the "LockON" button. ! WARNING If the "Lock-ON" button is continuously being de- pressed, the trigger can not be released. REVERSING SWITCH BUTTON The reversing switch button is located above the trigger switch and is used to reverse 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. ! CAUTION Do not change direction of rotation until the tool comes to a complete stop. Shifting during rotation of the chuck can cause damage to the tool. AUXILIARY HANDLE The auxiliary handle will provide additional control, support and guidance for the tool. The handle is adjustable around the 360° handle collar mount. To mount, loosen wing knob and slide handle completely over chuck onto the collar mount and tighten wing knob (Fig. 1). INSERTING BIT For small bits, open jaws enough to insert the bit up to the flutes. For large bits, insert the bit as far as it will go. Center the bit as you close the jaws by hand. This positions the bit properly, giving maximum contact between the chuck jaws and the bit shank. KEYED MODELS To tighten chuck, insert key into each of the three key holes in succession and tighten clockwise firmly. The chuck can be released by using one hole only (Fig. 2). KEYLESS MODELS To tighten chuck, rotate chuck sleeve clockwise and securely tighten by hand (Fig. 3). ! WARNING To prevent friction burns, or possible hand injury, do not loosen or tighten the chuck by using the power of the drill. INSTALLING CHUCK Always keep the spindle threads, the threads of the chuck and securing screw free of debris. To install a chuck, reverse "removing the chuck" procedure. FIG. 2 FIG. 3 Counter Clockwise Counter CHUCK Clockwise SLEEVE Clockwise CHUCK KEY FIG. 4 Clockwise REMOVING CHUCK Open the chuck all the way, remove left-hand thread screw inside chuck by turning it clockwise. Insert the short arm of a 3/8" hex key wrench and close jaws on flats of wrench. Strike long arm of wrench sharply counterclockwise, remove wrench and unthread chuck from spindle (Fig. 4). KEYED KEYLESS -7-