Adjusting Upper Blade Guides And Blade Support Bearing - Delta 28-150 Instruction Manual

ADJUSTING UPPER BLADE GUIDES AND
BLADE SUPPORT BEARING
iMPORTANT: BOTH THE UPPER AND LOWER BLADE GUIDES MUST BE PROPERLY ADJUSTED TO PREVENT
THE BLADE FROM TWiSTiNG DURING OPERATION.
1. DISCONNECT THE MACHINE FROM THE POWER SOURCE.
2. NOTE: Upper blade guard (B) Fig. 27, is shown removed for clarity.
3. Loosen the two screws (C) Fig. 27, and adjust the blade guides (D) as close as possible to the sides of the saw
blade, being careful not to pinch the blade.Then tighten the two screws (C).
4. Loosen screw (E) Fig. 27, and move the guide bracket (F) in or out until the front edge of the guides (D) is just
behind the "gullets" of the blade teeth. Then tighten screw (E).
Fig. 27
5. The upper blade support/thrust bearing (G) Fig. 27, prevents the saw blade from being pushed back too far when
cutting. The support bearing (G) should be adjusted approximately 1/32" behind the rear edge of the blade, so the back
edge of the blade overlaps the outside diameter of the ball bearing by approximately 1/8". To adjust, proceed as fol-
lows:
6. DISCONNECT THE MACHINE FROM THE POWER SOURCE.
7. Loosen screw (H) Fig. 27, and slide support bearing (G) in or out until it is approximately 1/32" behind the rear edge
of the saw blade. Then tighten screw (H).
8. The upper blade support bearing (G) Fig. 27, is set on an eccentric shaft. To change position of bearing (G), loosen
screw (H) Fig. 27, and using a straight screwdriver, rotate shaft (J) Fig. 28, until the blade properly overlaps the support
bearing. Then tighten screw (H).
Fig. 28
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