Porter-Cable 557 Instruction Manual page 8

FINE ADJUSTMENT
The "quick set" depth adjustment is
adjusted at the factory to produce joints
with nominal clearance (biscuit to groove). A
fine adjustment is provided allowing you to
reduce or increase the clearance as desired.
To adjust:
1. Use an 7 / " wrench to loosen lock-nut
16
(A) Fig. 3.
2. Rotate fine adjustment knob (B) Fig. 3, to
desired position (rotate knob clockwise
to reduce depth of cut, rotate knob
counter-clockwise to increase depth of
cut).
3. While holding adjustment knob in desired position, tighten lock-nut firmly.
ADJUSTABLE FENCE
Model 557 is equipped with an integral, adjustable fence which:
• provides micro-height adjustment. The distance scale includes indexes
to top of cut, to center of cut, and to bottom of cut.
• tilts 0° through 135°, with an adjustable stop at 90°.
• does not have to be removed to make "flush" cuts.
Height Adjustment (see Figs. 4 & 5)
1. Loosen locking knob (A), and rotate knob (B) to position the fence as
desired, (rotate knob clockwise to raise fence, rotate knob counterclockwise
to lower fence).
2. The depth scale (C), indicates the distance from the top edge of the
workpiece to the blade: NOTE: The bottom line on scale (C) begins at
1
and all lines are in /
• The line across the center of the index block (D) indicates the distance to
the center of the blade.
• The top edge of the index block (D) indicates the distance to the bottom
of the blade.
• The bottom edge of the index block (D) indicates the distance to the top
of the blade.
• The width of the index block (D) is equal to the thickness of the blade.
3. Once fence is in desired position, tighten knob (A).
B
A
" increments.
16
Fig. 4
8
A
B
Fig. 3
C
D
Fig. 5
/ "
1
4