Hilti DSH 900 User manual

DSH 700/
DSH 900
*288292*
288292
Hil i Corpora ion
LI-9494 Schaan
Tel.:[phone]
Fax:+423 / 2342965
www.hil i.com
Hilti = registered trade ark of HiltiCorp., Schaan W 3503 1110 00-Pos. 3 1 Printed inItaly © 2010
Right of technical and progra e changes reserved S. E. & O. 288292 / F
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ORIGINAL OPERATING INSTRUCTIONS
DSH 700/ DSH 900 cut-off saw
It is essential that the operating instruc-
tions are read before the machine is oper-
ated for the first time.
Always keep these operating instructions
together with the machine.
Ensure that the operating instructions are
with the machine when it is given to other
persons.
Contents Page
1. General information 2
2. Description 3
3. Accessories 4
4. Technical data 5
5. Safety instructions 6
6. Before use 9
7. Operation 13
8. Care and maintenance 14
9. Troubleshooting 18
10. Disposal 20
11. Federal emission control warranty
statement 20
12. Manufacturer’s warranty 21
1These numbers refer to the corresponding illustra-
tions. The illustrations can be found on the fold-out
cover pages. Keep these pages open while studying
the operating instructions.
In these operating instructions, the designation “the
machine” always refers to the DSH 700 or DSH 900
gasoline-powered cut-off saw.
Parts, operating controls and indicators (DSH 700 /
DSH 900) 1
@Forward grip
;Rear grip
=Guide wheels
%Start/stop switch
&Choke lever / half-throttle lock
(Throttle safety grip
)Throttle trigger
+Decompression valve
§Fuel pump
/Starter handle
:Cutting disc
·Clamping screw
$Hole for locking pin for changing cutting discs
£Clamping flange
|Guard (hood)
¡Disc guard adjustment grip
QWater valve
WWater connection
EFuel tank cap
RAir filter cover
TBelt tensioner
ZExhaust / muffler
USpark filter
ISpark plug connector
OType identification plate
DSH-FSC saw carriage 2
@Grip
;Throttle trigger
=Cutting depth adjustment
%Hold-down device
&Water tank
(Water connection
)Axial adjustment
+Throttle cable
§Machine cradle
en
1

5100 rpm
max.
1. General information
1.1 Safety notices and their meaning
DANGER
Draws attention to imminent danger that could lead
to serious bodily injury or fatality.
WARNING
Draws attention to a potentially dangerous situation
that could lead to serious personal injury or fatality.
CAUTION
Draws attention to a potentially dangerous situation
that could lead to slight personal injury or damage to
the equipment or other property.
NOTE
Draws attention to an instruction or other useful
information.
1.2 Explanation of the pictograms and other
information
Prohibition signs
Transport by
crane is not
permissible.
Warning signs
General
warning
Warning: hot
surface
Warning:
Flying sparks
present a fire
risk.
Warning: Risk
of kickback.
Warning: Don’t
inhale toxic
vapors or
exhaust
fumes.
Minimum
permissible
speed rating of
the cutting
discs used
Obligation signs
Wear
protective
gloves.
Wear safety
shoes.
Wear ear
protection, eye
protection,
respiratory
protection and
a hard hat. Eye
protective
devices must
comply with
ANSI Z87.1.
Don’t use
toothed
cutting discs.
Don’t use
damaged
cutting discs.
Smoking and
naked flames
prohibited.
Symbols
WARNING!
Read and
follow all
safety
precautions in
the operator’s
manual.
Failure to
follow these
instructions
could result in
serious or fatal
injury.
Motor stop
system
Fuel pump
Location of identification data on the machine
The type designation and serial number can be found
on the type identification plate on the machine. Make
a note of this data in your operating instructions and
always refer to it when making an enquiry to your
Hilti representative or service department.
Type:
Generation: 01
Serial no.:
en
2

2. Description
2.1 Use of the product as directed
The machine is intended for hand-held or walk-behind
use for dry or wet cutting of asphalt and mineral
or metallic construction materials using abrasive or
diamond cutting discs.
To reduce the amount of dust produced when cutting,
we recommend use of the wet cutting method.
The working environment may be as follows: con-
struction site, workshop, renovation, conversion or
new construction.
To avoid the risk of injury, use only genuine Hilti
accessories and cutting tools.
Observe the safety rules and operating instructions
for the accessories used.
Working on materials hazardous to the health (e.g.
asbestos) is not permissible.
Observe the information printed in the operating in-
structions concerning operation, care and mainte-
nance.
Nationally applicable industrial safety regulations
must be observed.
The machine is designed for professional use and
may be operated, serviced and maintained only by
trained, authorized personnel. This personnel must be
informed of any special hazards that may be encoun-
tered. The machine and its ancillary equipment may
present hazards when used incorrectly by untrained
personnel or when used not as directed.
Take the influences of the surrounding area into
account. Do not use the power tool or appliance
where there is a risk of fire or explosion.
Modification of the machine or tampering with its
parts is not permissible.
Don’t work in closed, poorly ventilated rooms.
2.2 Items supplied as standard
1 Machine
1 DSH tool set
1 Operating instructions
1 DSH consumables kit
2.3 Abrasive cutting discs for hand-guided
gasoline-powered cut-off saws
Abrasive cutting discs for gasoline-powered cut-off
saws are composed of synthetic-resin-bonded abra-
sive granulate. These cutting discs feature fabric or
fiber reinforcement which improves their strength,
toughness and breakage resistance.
NOTE
Abrasive cutting discs for gasoline-powered cut-off
saws are used mainly for cutting ferrous and non-
ferrous metals.
NOTE
Various grit types such as aluminum oxide, silicon
carbide, zirconium, etc., with a different bonding
material (matrix) or matrix hardness, are available
depending on the construction material to be cut.
2.4 Diamond cutting discs for hand-guided
gasoline-powered cut-off saws
Diamond cutting discs for gasoline-powered cut-off
saws consist of a steel core (disc) with diamond
segments (metallically bonded industrial diamonds).
NOTE
Segmented diamond cutting discs or those with a
continuous cutting face are mainly used for cutting
asphalt and mineral construction materials.
2.5 Cutting disc specifications
With the DSH 700-12" use only diamond discs or
synthetic-resin-bonded fiber-reinforced cutting discs
with a diameter of 12" and a permissible peripheral
speed of at least 80m/sec. With the DSH 700-14",
DSH 900-14" and DSH 900-16" use only diamond
discs or synthetic-resin-bonded fiber-reinforced cut-
ting discs with a diameter of 14" or, respectively, 16"
(DSH 900-16") and a permissible peripheral speed of
at least 100m/sec. The cutting disc manufacturer’s
instructions on fitting and using the discs must also
be observed.
2.6 Recommendations for use
We recommend that the workpiece is not cut through
in a single operation. Advance to the required depth
of cut by making several to-and-fro movements.
To avoid damaging the diamond cutting disc when
dry cutting, lift the blade out of the cut for approx. 10
en
3