EnGenius Technologies SHOPMASTER 28-248 - Manual (Page 22)

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Adjust the upper blade guides and blade support bearings ONLY AFTER the blade has the correct tension and is
tracking properly. To adjust:
1. Make sure that the bottom blade guides and support bearings are not touching the blade.
2. Check the upper blade guide assembly. The blade guides (A) Fig. 51 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).
3. Adjust the guides (A) Fig. 52 so that the front edge of the guides is 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. 52. When the guides (A) are set properly, tighten the thumb screw.
4. 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).
5. When the blade guide wears to a point that it cannot be adjusted close to the blade, loosen the screw (B) Fig. 55
and reverse the blade guides (A) Fig. 52.
6. The upper blade support bearing (E) Fig. 52 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. Loosen
the thumb screw (F) and turn 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. 52. Loosen the thumb screw (F) and 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.
ADJUSTING THE UPPER BLADE GUIDES AND BLADE SUPPORT BEARING
C
A
B
G
E
D
A
B
F
H
C
A
ADJUSTING LOWER BLADE GUIDES AND BLADE SUPPORT BEARING
1. Turn the knurled knob (C) Fig. 53 to adjust the front
edge of the guide blocks (B) so that they are just
behind the “gullets” of the saw teeth. Check the
support bearing (D). It should not be touching the
back of the blade.
2. Loosen the two screws (A) Fig. 53. 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. 53 so that it is about
1/64" behind the back of the blade.
C
E
A
B
D
Fig. 53
Fig.51 Fig. 52
Adjust the lower blade guides and blade support bearing after the upper guides and bearing have been adjusted.
Disconnect the machine from the power source!
Disconnect the machine from the power source!