Delta MS450 Instruction Manual page 17

ADJUSTING THE TENSION OF
CUTTINGHEAD RETURN SPRING
The tension of the cuttinghead return spring has been
adjusted at the factory in order that the cuttinghead
returns to the up position after a cut has been made. To
adjust the spring tension, turn adjusting screw (A) Fig. 28,
clockwise to increase or counterclockwise to decrease the
spring tension.
MAKE SURE SAW CUTTINGHEAD
RETURNS FREELY TO THE FULL RAISED POSITION
TO ENSURE THE LOWER BLADE GUARD FULLY
ENCLOSES THE BLADE.
ADJUSTING SLIDING FIT BETWEEN
CUTTINGHEAD ARM AND TRUNNION
After a long period of time, an adjustment of the sliding
fit between the cuttinghead arm (B) Fig. 28, and the
trunnion (C) may be necessary. To adjust, tighten nut (D).
Correct adjustment is a good snug sliding fit between
these two parts. This adjustment should not be so tight
that it restricts the sliding movement of the cuttinghead
arm (B) or so loose that it affects the accuracy of the saw
cut.
ADJUSTING DOWNWARD TRAVEL OF
SAW BLADE
1. DISCONNECT
FROM THE POWER SOURCE.
2. The downward travel of the saw blade can be limited
to prevent the saw blade from contacting any metal
surfaces of the machine. This adjustment is made by
loosening locknut (A) Fig. 29, and turning adjusting
screw (B) in or out until other end of screw (B)
contacts stop (C) at the full downward travel of the
saw blade.
3. Lower the blade as far as possible. Rotate the blade
by hand to make certain the teeth do not contact any
metal surfaces and adjust if necessary. After
adjustment is completed, tighten locknut (A) Fig. 29.
ADJUSTING LOWER BLADE GUARD
After an extended period of use the movable lower blade
guard (A) Fig. 30, may not operate smoothly when the
cuttinghead is lowered. This can be corrected by
adjusting nut (B) until the lower blade guard (A) moves
freely.
DO NOT OVERTIGHTEN THE NUT AS
THIS COULD IMPAIR GUARD MOVEMENT.
THE MACHINE
17
C
Fig. 27
B
C
D
Fig. 28
C
A
Fig. 29
A
Fig. 30
B
A
B
B