BM 2610021316 10-11 E:BM 2610021316 10-11 E.qxp 10/17/11 11:02 AM Page 21

Basic Saw Operations

Adjusting Sliding fence lock lever

To tighten lock: If the sliding fence does not operate as described, it needs adjustment. Remove sliding fence – (see page 20).

1.Push firmly down on the locking block to expose the adjustment screw – Using a #2 Phillips screwdriver, turn the screw 1/12 turn to the next notch in block.

A:To tighten lock: turn the screw counter-clockwise.

B:To loosen lock: turn the screw clockwise.

2.Replace sliding fence by putting its large square hole over the locking block. Slide fence fully in and close the cover plate tab. It should move freely and be locked tightly anywhere along its range of travel.

long Workpiece Support

!WARNING long workpieces have a ten- dency to tip over unless

clamped down and properly supported from un- derneath.

Operating Base Extensions – These extensions provide extra workpiece support and are especially useful when cutting long workpieces. To reposition the extensions, simply unlock the base extension lock levers, reposition the extensions and lock the levers (see Figure 28). The right extension lock lever tightens by rotating clockwise and the left lock lever tightens by rotating counterclockwise.

FIG. 28

lock lever

Additional Workpiece Support

Blocks – Long pieces need extra support. The base height is 4 inches. Cut two 2x4 pieces to 4" in length and fasten together. Boards of these thick-

ness and height can be used to create auxiliary sup- port extensions for long workpieces.

!WARNING Always adjust the sliding base extension to support workpiece.

Unsupported workpiece can move out of position during cut and cause injury and/or tol damage.

FIG. 29

Auxiliary fence

Making an Auxiliary fence

Certain types of molding need a fence face exten- sion because of the size and position of the work- piece. Holes are provided in the fence to attach an auxiliary fence. The auxiliary fence is used with the saw in the 0° bevel position only.

To fasten from front:

1.Place a piece of wood a minimum of 1/2" thick x 5-1/2" tall against the miter saw fence (see Figure 30). The right side should be only 2-3/4" tall to avoid motor interference during miter rotating. Check that auxiliary fence assembly does not in- terfere with head assembly. (See Figure 30 & 31).

2.Mark the locations of the support holes on the wood from the back side of the fence.

3.Drill and countersink the holes on the front of the support board.

4.Fasten from front of fence: Attach (each) auxiiary fence using two (2) 3/16" flat head machine bolts. With 3/4" auxiliary fence, use 1-1/2" long bolts Se- cure behind metal fence with washer and #5 machine nuts.

5.Make a full depth cut to create the blade slot. Check for interference between the auxiliary fence and the lower blade guard. Make adjust- ments as necessary.

-21-

Page 21
Image 21
Bosch Power Tools CM12 Adjusting Sliding fence lock lever, Lock lever Additional Workpiece Support, To fasten from front