BM 1609929Y07 10-10:BM 1609929Y07 10-10 1/18/11 10:06 AM Page 13

Install dust extraction guard with foot plate for masonry cutting applications so that the rotation of the wheel will be towards the vacuum extraction port. Place BACKING FLANGE and DRY DIAMOND WHEEL on the spindle. Thread on the LOCK NUT and tighten nut using the supplied lock nut wrench, while holding the spindle lock in. (Fig. 7)

FIG. 7

SPINDLE

DRY

DIAMOND

WHEEL

!WARNING

!WARNING

cutting.

DRY

DIAMOND

WHEEL

Use only lock nut and flange with equal diameters.

Do not use water or other cooling fluid with this tool for

SPINDLE

BACKING

FLANGE

LOCK

NUT

BACKING

FLANGE

LOCK NUT

Operating Instructions

Hold the tool with both hands ! WARNING while starting the tool, since

torque from the motor can cause the tool to twist.

Start the tool before applying to work and let the tool come to full speed before contacting the workpiece. Lift the tool from the work before releasing the switch. DO NOT turn the switch “ON” and “OFF” while the tool is under load; this will greatly decrease the switch life.

"TRI-CONTROL" PADDLE SWITCH

(Models 1821 only)

The “Tri-Control” Paddle Switch enables the operator to control the switch functions of "Lock-OFF", "ON/OFF" and "Lock-ON".

TO UNLOCK SWITCH AND TURN TOOL "ON": Push paddle lever FORWARD (toward the spindle) then squeeze the paddle lever.

TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.

The "Lock-ON" feature, incorporated into the paddle switch, is a convenience for long operations.

TO LOCK SWITCH "ON": After paddle switch has been activated push paddle lever completely FORWARD and release paddle lever.

TO SWITCH TOOL "OFF": Squeeze and then release paddle lever. The switch is spring loaded and will return to "OFF" position automatically.

PADDLE SWITCH WITH "LOCK-OFF "FEATURE (Model 1821D only

The Paddle switch enables the operator to control the switch functions of "Lock-OFF", and "ON/OFF".

TO UNLOCK SWITCH AND TURN TOOL "ON": Push paddle lever FORWARD (toward the spindle) then squeeze the paddle lever.

TO SWITCH TOOL "OFF": Release pressure on paddle lever. The switch is spring loaded and will return to "OFF" position automatically.

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Bosch Power Tools 1821D manual Operating Instructions, Spindle DRY Diamond Wheel, Spindle Backing Flange Lock NUT