Hitachi FDV 20VB, Technical Data And Service Manual

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7-3. Precautions In Usage
The Model FDV 20VB has three changeover mechanisms as described below. Adjust them according to the
applications.
(1) "Rotation Only (drill)" and "Ro Impact (impact drill)" changeover mechanism
" (hammer)" is marked on the side of housing (A) and " (drill)" is marked on the side of housing (B).
The mark " " means the impact drill function (Ro Impact) and the mark " " means the drill function
(Rotation Only). By pressing the change knob on the " " mark side, the Model FDV 20VB works as an
impact drill and by pressing the change knob on the " " mark side, the Model FDV 20VB works as a drill.
(2) Low speed and high speed changeover mechanism
The Model FDV 20VB turns to the "low speed" mode by turning the shift lever until the arrow mark on the lever
points "1" horizontally. The Model FDV 20VB turns to the "high speed" mode by turning the shift lever until the
arrow mark on the lever points "2" horizontally. If the shift lever moves jerkily, turn the drill chuck a little with a
hand. Then the shift lever moves smoothly. Do not use the Model FDV 20VB with the shift lever positioned
vertically. Otherwise the gear can be damaged or worn, or breakdown can be caused. Be sure to position the
shift lever horizontally.
Change knob
Press the change knob on the
"Rotation Only ( mark)" side.
Press the change knob on the
"Ro Impact ( mark)" side.
Low speed
Shift lever
Arrow mark
Lever
High speed
Change knob