Panasonic EY7840 - Manual (Page 14)

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Use with wood drill bit or metal drill bit with shank of 1.5 mm to 13 mm diameter.
Do not use the drill chuck in “Rotation with hammering mode” ( ). Use in "Rotation
with hammering mode" may cause break of chuck or bit and result in injury.
Hammer chuck (Optional accessory)
•EY9HX01E
Use with concrete drill bit, wood drill bit or metal drill bit with straight shank of 2.5 mm
to 13 mm diameter.
Do not use the hammer chuck with wood drill bit or metal drill bit in “Rotation with
hammering mode” ( ). Use in “Rotation with hammering mode” may cause break of
bit and result in injury.
If you need any assistance for more details regarding these accessories, ask your
local service center.
. USAGE SUGGESTION
1. If there isn’t enough force pushing down on the bit, the tool may not be able to
blow in hammering mode.
This is to prevent the hammering mode from operating with no load. Press down
harder on the bit to engage the tool and cause it to blow.
Always be sure to press down with enough force when working.
2. In winter or in other situations where the temperature of the unit is low (5°C (1°F)
or below), the blow of the hammering mode may be weaker than normal at the
beginning stage.
This is because the grease becomes stiffer in low temperatures, increasing fric-
tion.
If this should happen, operating hammering mode with no load for approximately
30 seconds and repeat this 3 times. This will restore its blowing power.
. SPECIFICATIONS
MAIN UNIT
Maximum drilling
diameter
Concrete
16.5 mm (21/32")*
*For work that can be completed with one battery pack.
( 12.5 mm (15/32") - 16.5 mm (21/32"))
Steel 13 mm (33/6")
Wood 18 mm (23/32")
Motor voltage 1. V DC
Speed at no load (RPM) 0-1000 min -1 (rpm)
Blows rate per minute (BPM) 0-3800 min -1 (bpm)
Weight (with battery pack) 2. k g (5.3 lbs)
Overall length 29 mm (9-51/6")