D28605
Heavy-Duty 5/16" (7.9 mm) Fiber-Cement Siding Shear
Cisaille robuste pour parement de fibrociment de 7,9 mm (5/16 po)
Cizalla para revestimientos de fibrocemento de 7,9 mm 
(5/16 pulgada), para trabajo pesado
Definitions: Safety Guidelines 
The definitions below describe the level of severity for each signal word. Please read 
the manual and pay attention to these symbols.
DANGER: will  Indicates an imminently hazardous situation which, if not avoided, 
result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could 
result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, may 
result in minor or moderate injury.
 CAUTION:  Used without  the safety alert  symbol indicates a potentially hazardous 
situation which, if not avoided,   result in may property damage.
IF YOU HAVE  ANY  QUESTIONS OR  COMMENTS ABOUT THIS  OR ANY DEWALT TOOL, 
CALL US TOLL FREE AT: 1-800-4-DEWALT (1-800-433-9258). 
 WARNING: To reduce the risk of injury, read the instruction manual.
General Power Tool Safety Warnings
WARNING! Read all safety warnings and all instructions Failure to follow the warnings 
and instructions may result in electric shock, fire and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS 
FOR FUTURE REFERENCE
The  term  “power  tool” in  the  warnings  refers  to  your  mains-operated  (corded)  power  tool  or 
battery-operated (cordless) power tool.
1) WORK AREA SAFETY
a) Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive atmospheres, such as in the presence of 
flammable liquids, gases or dust. Power tools create sparks which may ignite the dust 
or fumes.
c)  Keep  children and bystanders away  while operating  a  power tool. Distractions can 
cause you to lose control.
2) ELECTRICAL SAFETY
a) Power tool plugs must match the outlet. Never modify the plug in any way. Do not 
use any adapter plugs with earthed (grounded)  power tools. Unmodified plugs and 
matching outlets will reduce risk of electric shock.
b) Avoid  body  contact  with  earthed  or  grounded  surfaces  such  as  pipes, radiators, 
ranges  and  refrigerators. There  is  an  increased  risk  of  electric  shock  if  your  body  is 
earthed or grounded.
c) Do not expose power tools to rain or wet conditions. Water entering a power tool will 
increase the risk of electric shock.
d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the 
power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or 
entangled cords increase the risk of electric shock. 
e) When operating a power tool outdoors, use an extension cord suitable for outdoor 
use. Use of a cord suitable for outdoor use reduces the risk of electric shock. 
 f)  If operating a power tool in a damp location is unavoidable, use a residual current 
device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
3) PERSONAL SAFETY
a) Stay  alert,  watch  what  you  are  doing  and  use  common  sense  when  operating  a 
power tool. Do not use a power tool while you are tired or under the influence of  
drugs, alcohol or medication. A moment of inattention while operating power tools may 
result in serious personal injury.
b) Use personal protective equipment. Always wear eye protection. Protective equipment 
such  as  dust  mask,  non-skid  safety  shoes,  hard  hat,  or  hearing  protection  used  for 
appropriate conditions will reduce personal injuries.
c) Prevent  unintentional  starting.  Ensure  the  switch  is  in  the  off  position  before 
connecting  to  power  source  and/or  battery  pack, picking  up  or  carrying  the  tool. 
Carrying power tools with your finger on the switch or energising power tools that have the 
switch on invites accidents.
d) Remove any adjusting key or wrench before turning the power tool on. A wrench or 
a key left attached to a rotating part of the power tool may result in personal injury.
e) Do not overreach. Keep proper footing and balance at all times. This enables better 
control of the power tool in unexpected situations.
 f)  Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and 
gloves away from moving parts. Loose clothes, jewellery or long hair can be caught in 
moving parts. 
g) If devices are provided for the connection of dust extraction and collection facilities, 
ensure these are connected and properly used. Use of dust collection can reduce dust-
related hazards.
4) POWER TOOL USE AND CARE
a) Do  not force the power tool. Use  the correct power  tool for your application.  The 
correct power tool will do the job better and safer at the rate for which it was designed.
b) Do not use the power tool if the switch does not turn it on and off. Any power tool that 
cannot be controlled with the switch is dangerous and must be repaired.
c) Disconnect the plug from the power source and/or the battery pack from the power 
tool before making any adjustments, changing accessories, or storing power tools. 
Such preventive safety measures reduce the risk of starting the power tool accidentally.
d) Store  idle  power  tools  out  of  the  reach  of  children  and  do  not  allow  persons 
unfamiliar with the power tool or these instructions to operate the power tool. Power 
tools are dangerous in the hands of untrained users.
e) Maintain power tools. Check for misalignment or binding of moving parts, breakage 
of  parts  and  any  other  condition  that  may  affect  the  power  tool’s  operation.  If 
damaged, have  the  power  tool  repaired  before  use. Many  accidents  are  caused  by 
poorly maintained power tools.
 f)  Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting 
edges are less likely to bind and are easier to control.
g) Use  the  power  tool,  accessories  and  tool  bits  etc.,  in  accordance  with  these 
instructions  taking  into  account  the  working  conditions  and  the  work  to  be  
performed. Use of the power tool for operations different from those intended could result 
in a hazardous situation.
5) SERVICE
a) Have  your  power  tool  serviced  by  a  qualified  repair  person  using  only  identical  
replacement parts. This will ensure that the safety of the power tool is maintained.
Additional Safety Rules
 •  Hold power tools by insulated gripping surfaces when performing an operation where 
the cutting tool may contact hidden wiring or its own cord. Contacting a “live” wire may 
make exposed metal parts of the tool “live” and shock the operator. 
 •  Keep hands away from cutting area. A moment of inattention while operating power tools 
may result in serious personal injury.
 •  Stay clear of end pieces that may fall after being cut off. Contact with a sharp edge could 
result in personal injury.
 •  Always  keep  the  power  cord  away  from  the  edge  of  the  material  being  sheared. 
Sharp  edges  can  result  in  the  cord  insulation  being  cut. This  condition  may  create  an 
electrical hazard. 
 •  Air vents often cover moving parts and should be avoided. Loose clothes, jewellery or 
long hair can be caught in moving parts.
 •  An extension cord must have adequate wire size (AWG or American Wire Gauge) for 
safety. The smaller the gauge number of the wire, the greater the capacity of the cable, that 
is 16 gauge has more capacity than 18 gauge. An undersized cord will cause a drop in line 
voltage resulting in loss of power and overheating. When using more than one extension to 
make up the total length, be sure each individual extension contains at least the minimum 
wire size. The following table shows the correct size to use depending on cord length and  
nameplate ampere rating. If in doubt,  use the next heavier  gauge. The smaller  the gauge  
number, the heavier the cord.
Minimum Gauge for Cord Sets
Ampere Rating
 Volts Total Length of Cord in Feet (meters)
120V      25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7)
240V      50 (15.2) 100 (30.5) 200 (61.0) 300 (91.4)
More
Than
Not More 
Than
AWG
         0 6 18 16 16 14
 6 10 18 16 14 12
         10 12 16 16 14 12
       12 16 14 12 Not Recommended
  •  ALWAYS  use  safety  glasses.  Everyday  eyeglasses  are  NOT  safety  glasses.  Also  use 
face  or  dust  mask  if  cutting  operation  is  dusty.  ALWAYS  WEAR  CERTIFIED  SAFETY 
EQUIPMENT:
 •  ANSI Z87.1 eye protection (CAN/CSA Z94.3)
 •  ANSI S12.6 (S3.19) hearing protection
 •  NIOSH/OSHA respiratory protection
WARNING: Some  dust  created  by  power  sanding,  sawing,  grinding,  drilling,  and  other 
construction  activities  contains  chemicals  known  to  cause  cancer,  birth  defects  or  other 
reproductive harm. Some examples of these chemicals are:
 •  lead from lead-based paints,
 •  crystalline silica from bricks and cement and other masonry products, and 
 •  arsenic and chromium from chemically-treated lumber (CCA).
Your  risk  from  these  exposures  varies, depending  on how often  you do  this  type  of  work. To 
reduce your exposure to these chemicals: work in a well ventilated area, and work with approved 
safety equipment, such as those dust masks that are specially designed to filter out microscopic 
particles.
 •  Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and 
other construction activities. Wear protective clothing and wash exposed areas with 
soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may promote 
absorption of harmful chemicals.
WARNING:  Use of this tool can generate and/or disburse dust, which may cause serious and 
permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection 
appropriate for the dust exposure. Direct particles away from face and body.
WARNING:  Always  wear  proper  personal  hearing  protection  that  conforms  to  ANSI  
S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product 
may contribute to hearing loss.
 •  The label on your tool may include the following symbols. The symbols and their definitions 
are as follows:
V ......................volts  A ................amperes
Hz ....................hertz  W ...............watts
min ..................minutes   .............alternating current
  ...............direct current   .............alternating or direct current
 ....................Class I Construction  no ..............no load speed
    ........................(grounded)   ...............earthing terminal
      ....................Class II Construction   ..............safety alert symbol
  ........................(double insulated)   BPM...........beats per minute
 …/min .............per minute  RPM ..........revolutions per minute
Introduction
The D28605 5/16" (7.9 mm) Fiber-Cement Siding Shear is designed for cutting cement board/
siding. You can make both straight and curved cuts with a minimum radius of 7" (175 mm). The 
shear removes a 1/4" (6.35 mm) wide piece of waste material.
Switch (Fig. 1)
To start tool, depress trigger switch. To stop tool, release the trigger. 
DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286.
(JAN09)     Part No. N025533      D28605     Copyright © 2006, 2009 DEWALT
The following are trademarks for one or more DEWALT power tools: the yellow and black color 
scheme; the “D” shaped air intake grill; the array of pyramids on the handgrip; the kit box configu-
ration; and the array of lozenge-shaped humps on the surface of the tool.
INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA 
DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES 
DE USAR EL PRODUCTO. 
If you have questions or comments, contact us.
Pour toute question ou tout commentaire, nous contacter.
Si tiene dudas o comentarios, contáctenos.
1-800-4-D WALT • www.dewalt.comE