Hitachi POWER TOOLS CR 13VA - Manual (Page 5)

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(3) Saw blade can be mounted in either direction, upward or downward
The Model CR 13VA is convenient for cutting materials on the floor or near window frames, and also for
plunge cutting on plywood panels because the saw blade can be installed upside down.
< Cutting on the floor in two-by-four construction > < Plunge cutting on plywood panels >
(4) New swing cutting action (patent pending)
Two cutting systems, smooth "straight cutting" and efficient "swing cutting", can be selected with the change
lever. The saw blade is made to forcibly bite into the material when the swing roller at the rear of the plunger
(reciprocating shaft) moves up and down along the slanted surface of the swing rail in the gear cover. Soft
materials such as wood, etc. can be efficiently cut because the reaction during swing cutting is lower than that of
orbital cutting. The saw blade can be mounted in either facing upward or downward.
< New swing cutting mechanism >
Slanted surface when the saw
blade is mounted upside down
Swing rail
Movement when the saw blade
is mounted normally
Slanted surface when the saw blade is
mounted normally
Movement when the saw blade is
mounted upside down
Swing roller mounted at the rear of the plunger
Change lever