Epson 28-293 - Manual (Page 11)

11
ADJUSTING THE UPPER BLADE GUIDES AND BLADE SUPPORT BEARING
Adjust the upper blade guides and blade support bearings ONLY
AFTER the blade has the correct tension and is tracking properly.
To adjust, do the following:
1. DISCONNECT TOOL FROM POWER SOURCE
2. Make sure that the bottom blade guides and support bearings
are clear of the blade.
3. Check the upper blade guide assembly. The blade guides (A)
Fig. 27 should be parallel to the blade. To adjust, loosen the screw
(B) and rotate the complete guide assembly (C). When the blade
guides are parallel with the blade, tighten the screw (B).
4. Adjust the guides (A) Fig. 28, so that the front edge of the
guides are just behind the “gullets” of the saw teeth. The complete
guide block bracket can be moved in or out by loosening the
thumb screw (C) and turning the knurled knob (D) Fig. 28
. When
the guides (A) are set properly, tighten thumb screw (C).
5. Two set screws (B) Fig. 28 hold the upper blade guides (A) in
place. Loosen the set screws (B) to move the guides (A). Place
them as close as possible to the side of the blade. (Be careful not
to pinch the blade). Tighten the screws (B).
6. The upper blade support bearing (E) Fig. 28 prevents damage
to the set in the saw teeth by keeping the blade from being
pushed too far toward the back. The support bearing (E) should be
set 1/64" behind the blade by loosening the thumb screw (F) and
turning the knurled knob (G) to move the support bearing (E) in or
out.
7. Adjust the blade support bearing (E) so that the back edge of
the blade overlaps the outside diameter of the ball bearing by
about 1/16". The bearing (E) is set on an eccentric. To change the position, remove the screw (H) and bearing (E) Fig. 28.
Loosen the thumb screw (F), back out the knurled knob from the set screw. Remove the hex shaft from the hole, and rotate it
to move the eccentric for the bearing.
8. When the blade guide wears to a point that it cannot be adjusted close to the blade, loosen screw (B) Fig. 28 and reverse
the blade guides (A) Fig. 28.
ADJUSTING LOWER BLADE GUIDES
AND BLADE SUPPORT BEARING
Adjust the lower blade guides and blade support bearing after
the the upper guides and bearing have been adjusted.
1. DISCONNECT TOOL FROM POWER SOURCE.
2. Adjust the front edge of the guide blocks (B) so that they are
just behind the “gullets” of the saw teeth. Turn the knurled
knob (C) Fig. 29 to make this adjustment. Check the support
bearing. It should not be touching the back of the blade.
3. Loosen the two screws (A) Fig. 29. Move the guides (B) as
close as possible to the side of the blade, being careful not to
pinch the blade. Tighten screws (A).
3. Turn the other knurled knob (E) to adjust the lower blade
support bearing (D) Fig. 29 so that it is about 1/64" behind the
back of the blade.
Fig. 28
Fig. 29
CHANGING THE BLADES
1. DISCONNECT TOOL FROM POWER SOURCE.
2. Open the upper and lower wheel guards.
3. Release tension on the saw blade.
4. Loosen the table alignment pin with a wrench and pull out. Remove table insert.
5. Take the blade off the wheel, and guide it through the slot in the table.
6. Install the new blade by reversing the procedure. (Table alignment pin should be seated by gently tapping it
with a hammer).
Fig. 27
A
C
B
A
D
G
E
H
F
C
A
C
E
A
B
A
B
D
B B