Bosch Power Tools 1678 Operating Instructions, Depth Adjustment, Cutting Angle Check, Line Guide

Models: 1678

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Operating Instructions

DEPTH ADJUSTMENT

FIG. 3

Disconnect plug from power source. Loosen the depth adjustment lever located between the guard and handle of saw. Hold the foot down with one hand and raise or lower saw by the handle. Tighten lever at the depth setting desired. Check desired depth (Fig. 3).

Not more than one tooth length of the blade should extend below the material to be cut, for minimum splintering (Fig. 3).

DEPTH

ADJUSTMENT

LEVER

ONE TOOTH LENGTH SHOULD

PENETRATE WOOD FOR MINIMUM SPLINTERING

90° CUTTING ANGLE CHECK

Disconnect plug from power source. Set foot to maximum depth of cut setting. Loosen bevel adjustment lever, set to 0° on quadrant, retighten bevel adjustment lever first, then the depth adjustment lever and check for 90° angle between the blade and bottom plane of foot with a square (Fig. 4). Make adjustments by turning the small alignment screw from bottom side of foot, if necessary (Fig. 4).

QUADRANT

 

FIG. 4

 

 

BEVEL

 

ADJUSTMENT

 

LEVER

 

 

FOOT

ALIGNMENT

90°

BLADE

 

 

SCREW

BEVEL ADJUSTMENT

Disconnect plug from power source. The foot can be adjusted up to 45° by loosening the bevel adjustment lever at the front of the saw and aligning foot to desired angle on calibrated quadrant. To maintain adjustment, Always tighten bevel adjustment first, then the depth adjustment lever (Fig. 5).

For 50° cuts, loosen bevel adjustment lever, depress 45° stop spring, adjust foot to 50° and tighten lever (Fig. 5). Because of the increased amount of blade engagement in the work and decreased stability of the foot, blade

binding may occur. Keep the saw steady and the foot firmly on the workpiece.

45° STOP

BEVEL

SPRING

ADJUSTMENT

 

LEVER

FIG. 5

QUADRANT

LINE GUIDE

For a straight 90° cut, use the large notch in

the foot. For 45° bevel cuts, use the small FOOT notch (Fig. 6). The cutting guide notch will

give an approximate line of cut. Make sample cuts in scrap lumber to verify actual line of cut. This will be helpful because of the number of different blade types and thicknesses available. To ensure minimum splintering on the good side of the material to be cut, face the good side down.

 

90° VERTICAL CUTS

FIG. 6

 

 

 

45° / 50° BEVEL CUTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PUSH

45°STOP

SPRING IN

DIRECTION

OF ARROW

FOR 50°

BEVEL

ADJUSTMENT

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Bosch Power Tools 1678 manual Operating Instructions, Depth Adjustment, Cutting Angle Check, Bevel Adjustment, Line Guide