Cordless hammer drill  EN
1110
PROBLEM SOLUTION
1. WHY DOES THE DRILL NOT TURN ON WHEN 
YOU PRESS THE SWITCH?
The Forward and Reverse Switch, which is on top of 
the trigger, is positioned in the lock function. Unlock 
the Forward and Reverse Switch putting it into the 
required rotation position. Push the trigger and the 
drill will start to rotate (See Fig.B)
2. THE DRILL STOPS BEFORE THE SCREW IS 
COMPLETELY TIGHTENED. WHY?
Verify the torque position of the Torque Adjustment 
Ring, you can find the Torque Adjustment Ring 
between the Chuck and the drill body. Position 
1 is the lowest torque (screw driving force) and 
position 18 is the highest torque (screw driving 
force). Position   is for drill operation. Position   
is for hammer drill operation. Regulate the Torque 
Adjustment Ring to a higher position to reach the 
best result. (See Fig. E1, E2, E3)
3. I CAN NOT FIT THE BATTERY PACK INTO 
THE BATTERY CHARGER. WHY?
The battery pack can be inserted into the charger 
only in one direction. Turn the battery pack around 
until it can be inserted into the slot. The charger LED 
indicator should turn on when the battery pack is 
charging.  
4. REASONS FOR DIFFERENT BATTERY PACK 
WORKING TIMES
Charging time problems, as above, and having not 
used a Battery Pack for a prolonged time will reduce 
the Battery Pack working time. This can be corrected 
after several charge and discharge operations by 
charging & working with your drill. Heavy working 
conditions such as large screws into hard wood will 
use up the Battery Pack energy faster than lighter 
working conditions. Do not re-charge your Battery 
Pack below 0
o
C and above 45
o
C as this will affect 
performance.
MAINTENANCE
Remove the Battery Pack from the tool before 
carrying out any adjustment, servicing or 
maintenance.
Your power tool requires no additional lubrication 
or maintenance.
There are no user serviceable parts in your power 
tool. Never use water or chemical cleaners to 
clean your power tool. Wipe clean with a dry cloth. 
Always store your power tool in a dry place. Keep 
the motor ventilation slots clean. Keep all working 
controls free of dust. Occasionally you may see 
sparks through the ventilation slots. This is normal 
and will not damage your power tool.
FOR BATTERY TOOLS
The ambient temperature range for the use and 
storage of tool and battery is 0
o
C-45
o
C.
The recommended ambient temperature range for 
the charging system during charging is 0
o
C-40
o
C.
ENVIRONMENTAL 
PROTECTION
Waste electrical products must not be disposed 
of with household waste. Please recycle where 
facilities exist. Check with your local authorities 
or retailer for recycling advice.
DECLARATION OF 
CONFORMITY
We, 
Positec Germany GmbH
Grüner Weg 10, 50825 Cologne, Germany 
Declare that the product,
Description Worx Cordless Hammer Drill 
Type WT351 WT351.X (3-designation of ma-
chinery, representative of Hammer drill) 
Function Drilling
Complies with the following Directives,
2006/42/EC
2011/65/EU&(EU)2015/863
2014/30/EU
Standards conform to
EN 55014-1
EN 55014-2
EN 62841-1
EN 62841-2-1
The person authorized to compile the technical file, 
Name  Marcel Filz
Address  Positec Germany GmbH Grüner Weg 
10, 50825 Cologne, Germany
2020/10/15
Allen Ding
Deputy Chief Engineer Testing & Certification
Positec Technology (China) Co., Ltd
18, Dongwang Road, Suzhou Industrial 
Park, Jiangsu 215123, P. R. China