ADJUSTMENTS
12
ADJUSTING BLADE TENSION
WARNING:
If the tension in the blade is too high, it runs the
risk of breaking. If the tension is too low, there is a risk of the
blade slipping and stopping during a cut.
1. Raise the upper blade guide fully using the saw blade tension knob
located on the top of the machine (Fig. N - 1). Take the blade width
into consideration during the adjustment.
2. Check the tension by pushing with a finger against the side of the
blade halfway between the table and the upper guide. The blade
should not flex more than 2 mm.
3. Check the adjustment using the blade tension indicator on the in-
side of the upper housing. The scale indicates the correct adjustment
for a certain width of blade. The indicator should be pointing towards
the width of blade being used.
4. Turning the setting knob clockwise increases the blade tension
while turning the setting knob counterclockwise decreases tension.
5. After achieving the desired tension, the tension release lever can
be used to easily loosen and tighten the spindles without changing the
amount of tension (Fig. N - 2).
UPPER BLADE GUIDE ADJUSTMENT
The height of the upper blade guard should be adjusted prior to every operation to accomodate the height of the
workpiece (the blade guard should be no more than one-fifth of an inch (3mm) from the upper edge of the work-
piece).
1. Use the adjustment knob (Fig. P - 1) to adjust the height of the upper blade guide. Use the outer locking knob
to secure the guard in place when it has reached the desired height.
2. Loosen the knobs on the side of the blade guard (Fig. P - 2 and P - 3) and adjust both the thrust and guide bear-
ings so that they are positioned approximately 1/10 of one inch (2mm) or less (.5mm for the guide bearing) away
from the blade. The inside knob (Fig. P - 3) adjusts the thrust bearing, holding the back of the blade in place. The
outside knob (Fig. P - 2) adjusts the guide bearings, moving the blade left and right.
3. Once desired adjustments have been achieved (when the bearings are all roughly .1 to .5 mm away from the
blade) (Fig. Q, Fig. R), tighten the knobs to secure the bearing guides in place.
1
2
Fig. N
Fig. O
ADJUSTING THE BLADE TENSION INDICATOR (Fig. O)
The blade tension indicator can be adjusted for baldes known to be cut over or under length by different manu-
facturers. With moderate tension on the blade, loosen the set screw (Fig. O - 1) and adjust the blade indicator up
or down as needed. Retighten the set screw.
1
Summary of Contents for 3966
Page 18: ...18 EXPLODED VIEW PARTS LIST ...
Page 22: ...THANKS FOR REMEMBERING ...