Adjustment Of Components; Bevel Angle Adjustment; Looseness Adjustment Of The Slide Section - Hitachi C 12FSA Technical Data And Service Manual

9. ADJUSTMENT OF COMPONENTS

9-1. Bevel Angle Adjustment

When shipped from the factory, the height of 8 mm bolts (A), (B),
and (C) are adjusted so that the saw blade section (head) will
stop at 0˚ (right-angle), 45˚ to the left, and 45˚ to the right. To
change the head stop positions, instruct the customer to adjust
the height of 8 mm bolts (A), (B) and (C) as described below. For
example, to change the 45˚ to the right stopper, pull the fixing pin
out in the direction indicated by the arrow in Fig. 47-a, and tilt the
head to the right.
When setting the head to the 0˚ position, be sure to replace the
fixing pin (insert it in the opposite direction from that indicated by
the arrow in Fig. 47-a).
[CAUTION] If there is any clearance between the upper
surface of 8 mm bolt (A) (the 0˚ stopper) and the fixing pin,
the angle of the saw blade relative to the upper surface of
the turn table may not be an exact right angle. In such a
case, press down on holder (A) and lock it in position with
the clamp lever so that there is no clearance between the
stopper pin and 8 mm bolt (A).

9-2. Looseness Adjustment of the Slide Section

After extended use, there may be some looseness between slide pipe (A) and holder (A) because of worn
bushings (they are made of resin material) on the slide pipe (A) portion. If abnormal looseness is noted, perform
adjustment as described below. (See Figs. 48 and 49.)
(1) Loosen the four lock nuts M8, and loosen each of the four hexagon socket set screws M8 x 16 (
Fig. 49). This will free slide pipe (A) so that it comes to rest on the lower surface of the holder (A) hole [32 mm
(1.26") dia.].
(2) Gently tighten hexagon socket set screw
M8 x 16 until it lightly contacts slide pipe
1
(A), then turn it approximately 120˚ and lock it
in position by tightening the lock nut M8.
(This positions slide pipe (A) in the center of
the holder in holder (A).)
(3) Next, tighten and adjust hexagon socket set
screw M8 x 16 so that slide pipe (A) will
2
slide smoothly, and lock it in position with the
lock nut M8. [The pressing force required to
slide pipe (A) should be within 2 to 3 kg.
(4.4 to 6.6 lbs.)
(Stopper for left 45˚ bevel angle)
(Stopper for right 45˚ bevel angle)
Slide pipe (B)
Holder (A)
Ball bushing
--- 26 ---
Indicator
Fixing pin
8 mm bolt (C)
Fig. 47-a
8 mm bolt (B)
8 mm bolt (A)
(Stopper for 0˚)
Fig. 47-b
Hexagon socket set screw M8 x 16
Lock nut M8
Slide pipe (A)
Fig. 48
to in
1 4
Bushing
Bushing