Hitachi C 18DSL Handling Instructions Manual page 29

20. Ensure that the retraction mechanism of the guard system
operates correctly.
21. The saw blades body must be thinner than the riving knife and
the width of cut, or kerf (with teeth set) must be greater than the
thickness of the riving knife.
22. Never operate the circular saw with the saw blade turned upward
or the side.
23. Ensure that the material is free of foreign matters such as nails.
24. The riving knife should always be used except when plunging in
the middle of the workpiece.
25. The saw blades range should be from 165 mm to 150 mm.
26. Be careful of brake kickback.
This circular saw features an electric brake that functions when
the switch is released. As there is some kickback when the brake
functions, be sure to hold the main body securely.
27. Avoid cutting in the state where the base has fl oated up from the
material.
When blade is binding, or when interrupting a cut for any reason,
release the trigger and hold the saw motionless in the material
until the blade comes to a complete stop. Never attempt to remove
the saw from the work or pull the saw backward while the blade is
in motion or KICKBACK may occur. Investigate and take corrective
actions to eliminate the cause of blade binding.
28. Support large panels to minimize the
risk of blade pinching and KICKBACK.
Large panels tend to sag under their
own weight. Supports must be placed
under the panel on both sides, near
the line of cut and near the edge of the
panel as shown in Fig. 1, 2.
To minimize the risk of blade pinching
and kickback. When cutting operation
requires the resting of the saw on the
work piece, the saw shall be rested on
the larger portion and the smaller piece
cut off .
29. Use extra caution when making a
"Pocket Cut" into existing walls or other
blind areas. The protruding blade may
cut objects that can cause KICKBACK.
NEVER place your hand or fi ngers
behind the saw (Fig. 3). If kickback
occurs, the saw could easily jump
backwards over your hand, possibly
causing severe injury.
To avoid kickback, do support
board or panel near the cut.
Don't support board
or panel away from
the cut.
29
English
Fig. 1
Fig. 2
Fig. 3