Stanley DS1231801 User manual

Infrastructure
DS12 Hydraulic Utility Saw
Safety, Operation & Maintenance
71069 User Manual 2/2022 Ver. 21
DECLARATION OF CONFORMITY
ÜBEREINSTIMMUNGS-ERKLARUNG
DECLARATION DE CONFORMITE CEE
DECLARACION DE CONFORMIDAD
DICHIARAZIONE DI CONFORMITA
______________________________________________________________________
I, the undersigned:
Ich, der Unterzeichnende:
Je soussigné:
El abajo firmante:
lo sottoscritto:
Nuerenberg, David
Surname and First names/Familiennname und Vornamen/Nom et prénom/Nombre y apellido/Cognome e nome
hereby declare that the equipment specified hereunder:
bestätige hiermit, daß erklaren Produkt genannten Werk oder Gerät:
déclare que l’équipement visé ci-dessous:
Por la presente declaro que el equipo se especifica a continuación:
Dichiaro che le apparecchiature specificate di seguito:
1. Category: Utility Chainsaw, Hydraulic
Kategorie:
Catégorie:
Categoria:
Categoria:
2. Make/Marke/Marque/Marca/Marca STANLEY
3. Type/Typ/Type/Tipo/Tipo: DS1231801
4. Serial number of equipment:
Seriennummer des Geräts:
Numéro de série de l’équipement:
Numero de serie del equipo:
Matricola dell´attrezzatura:
All
Has been manufactured in conformity with
Wurde hergestellt in Übereinstimmung mit
Est fabriqué conformément
Ha sido fabricado de acuerdo con
E’ stata costruita in conformitá con
Directive/Standards
Richtlinie/Standards
Directives/Normes
Directriz/Los Normas
Direttiva/Norme
No.
Nr
Numéro
No
n.
Approved body
Prüfung durch
Organisme agréé
Aprobado
Collaudato
EN ISO
EN ISO
EN ISO
Machinery Directive
5349
3744 (15744)
13732-1
2006/42/EC:2006
Self
Self
Self
Self
5. Special Provisions: None
Spezielle Bestimmungen:
Dispositions particulières:
Provisiones especiales:
Disposizioni speciali:
6. Representative in the Union: Patrick Vervier,Stanley Dubuis 17-19, rue Jules Berthonneau-BP 3406 41034 Blois Cedex, France.
Vertreter in der Union/Représentant dans l’union/Representante en la Union/Rappresentante presso l’Unione
Done at/Ort/Fait à/Dado en/Fatto a STANLEY Infrastructure, Milwaukie, Oregon USA Date/Datum/le/Fecha/Data 4-30-2018
Signature/Unterschrift/Signature/Firma/Firma
Position/Position/Fonction/Cargo/Posizione North America Quality Manager

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DS12 Main Body Parts Illustration - Detail F
ITEM P/N DESCRIPTION Qty
1 81779 Handle Retainer 1
2 73583 Hand Guard Spacer 1
3 73582 Hand Guard 1
4 33261 Washer 1
5 33260 Cap Screw - 1/4-20 X 5/8 1
6 22714 Fill Head Screw - 5/16-18 X 2.750 1
7 22702 Bar Adjustment Nut 1
8 22752 Nylock Nut - 5/16-18Unc 1
9 71046 Chain Sprocket 1
10 20471 Trantorque Adapter - Torque To
23-30 Ft. Lbs.
1
11 22945 Chain Cover 1
12 23196 Cap Screw - 5/16-18 X 3/8 2
13 20465 Stud 2
14 71051 Chain Guard 1
15 02766 Washer 2
16 03276 Hex Nut - 3/8-16Unc 2
17 01758 Cap Screw - 5/16-18 X 3.50 4
18 00175 O-Ring - 1/2 X 5/8 X 1/16-014* 8
19 02912 Oil Tube 2
20 03006 Cap Screw - 5/16-18 X 3/4 2
21 22713 Chain Saw Adapter 1
22 25688 Motor Assembly 1
23 74773 Tool Name Tag 1
24 11207 Circuit Type “D” Sticker 1
25 02764 Cap Screw - 5/16-18 X 3/4 2
26 02936 Handle 1
27 02643 Washer 3
28 22715 Cap Screw - 5/16-18 X 5/8 1
29 20461 Handle Strut Assembly 1
30 12412 Electrical Danger Sticker 1
31 88347 Composite Safety Sticker 1
32 02764 Cap Screw - 5/16-18 X 3/4 3
33 22798 Seal Kit (not shown) - *In seal kit -
DS12 Handle Parts Illustration - Detail G
ITEM P/N DESCRIPTION Qty
34 00112 Quad Ring - 1/4 x 3/8 x 1/16-010* 1
35 02931 ON/OFF Valve Cap 1
36 01604 O-ring - .755 x .949 x .097-910* 2
37 02925 Valve Spool 1
38 08104 Hex Plug 1
39 74841 Roll Pin 1
40 22707 Trigger 1
41 02920 ON/OFF Valve Spacer 1
42 31804 Roll Pin 1
43 22701 Spring 1
44 22704 Safety Catch 1
45 28552 Valve Handle Assembly - Includes
part 08104. Must purchase with
part 74841.
1
DS12 Handle Parts Illustration - Detail G
ITEM P/N DESCRIPTION Qty
46 00787 Cap Screw - 1/4-20 x 1.250 1
47 20459 Hose Clip 1
48 350023 Hex Plug 1
49 88358 Sound Power Decal 1
50 02916 Spring 1
51 01604 O-ring - .755 x .949 x .097-910 2
52 09437 Plug 1
53 00175 O-ring - 1/2 x 5/8 x 1/16-014 8
54 00174 Oil Tube 2
55 20453 Extension Housing Assembly 1
56 25260 O-ring - 3/8 x 1/2 x 1/16-012* 1
57 01211 O-ring - 5/8 x 3/4 x 1/16-016* 1
58 20463 Water Valve 1
59 350237 Hex Plug 1
60 20458 Spring 1
61 00018 O-ring - 7/16 x 9/16 x 1/16-013* 1
62 02004 Drive Screw 2
63 76544 CE Tool Plate 1
64 71799 Flow Relief Cartridge 1
65 09612 Caution Sticker (Not Shown) 1
66 22798 Seal Kit (not shown) - *In seal kit -
DS12 Motor Parts Illustration - Detail H
ITEM P/N DESCRIPTION Qty
1 00208 Cap Screw 8
2 06861 Gear Housing 1
3 06316 Bushing 4
4 00713 Dowel Pin 2
5 73308 Idle Shaft 1
6 03227 Dowel Pin 2
7 00178 O-ring 1
8 00175 O-ring 2
9 21417 Front Bearing Housing 1
10 88345 Importer Label - Model DS1231801 1
11 28323 CE Label - Model DS1231801 1
12 00669 Quad Ring 1
13 350771 O-ring 1
14 19884 Seal Gland 1
15 20466 Motor Shaft 1
16 00170 Retaining Ring 1
17 00148 Bearing 1
18 00633 Retaining Ring 1
19 01211 O-ring 1
20 02905 O-ring 1
21 03110 Rotary Shaft Seal 1
22 03104 Keeper Seal & Bearing 1
23 03280 Spacer 1
24 20472 Retaining Ring 1

DS12 User Manual | 7
Safety Precautions
The Safety Alert Symbol alerts you to potential
personal injury hazards. Obey all safety messages
that follow to avoid possible injury or death.
Indicates an imminently hazardous situation which
will result in death or serious injury.
Indicates a potentially hazardous situation which
could result in death or serious injury.
Indicates a potentially hazardous situation which
could result in property damage.
Always observe safety symbols. They are included for your safety and for the
protection of the tool.
WARNING: Read all safety warnings and instructions. Failure
to follow warnings and instructions may result in tool damage
and/or serious injury.
WARNING: To reduce the risk of injury, read the instruction
manual.
General
• Do not discard safety instructions. Give to the operator.
• This tool will provide dependable service if operated in accordance
with the instructions given in this manual. Read and understand this
manual and any stickers and tags attached to the tool and hoses before
operation. Failure to do so could result in personal injury or equipment
damage.
• Inspect the tool before each use and ensure all decals are legible.
Contact STANLEY if replacements are needed.
• Establish a training program for all operators to ensure safe operation.
Do not operate the tool unless thoroughly trained or under the
supervision of an instructor. Keep out of the reach of children.
• Operators and maintenance personnel shall be able to physically handle
the bulk, weight and power of the tool.
• Avoid unsuitable postures as these positions do not allow for
counteracting of normal or unexpected movement of the tool, such as
a sudden break of the tool bit. Change postures during extended tasks
to help avoid discomfort or fatigue.
• Do not operate a damaged, improperly adjusted, modified or
incompletely assembled tool.
• Do not operate the tool 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.
• Provide adequate ventilation in closed areas when operating a gas or
diesel hydraulic power source.
• Do not inspect, carry, clean, change accessories or perform
maintenance on the tool while the power source is connected.
Accidental engagement of the tool can cause serious injury.
• Ensure work piece is securely fixed. Be aware that failure of the work
piece or accessories may generate high velocity projectiles.
• Stay alert, watch what you are doing and use common sense when
operating a hydraulic tool. Do not operate this tool if you are tired or
under the influence of drugs or alcohol. A moment of inattention while
operating hydraulic tools may result in serious injury.
• Assess risks to others around you before operating the tool.
• During operation, do not contact mechanisms, accessories or hardware
as they can become very hot; use your Personal Protection Equipment
(PPE).
• Use and maintain the tool as stated in this manual. Misuse of this tool
is forbidden. Misuse of the tool can cause serious injury. Do not modify
the tool in any way.
• Supervising personnel should develop additional precautions relating to
the specific work area and local safety regulations.
• Never operate the tool if you cannot be sure that underground utilities
are not present, such as electrical cables, gas pipes, etc. These can
cause a hazard if damaged with the tool.
• The tool is not insulated against coming into contact with electric
power. Use hose certified as non-conductive.
• Do not overreach. Maintain proper footing and balance at all times
when using the tool.
• Slips, trips and falls are major causes of workplace injury. Be observant
of hoses lying about the work area, as they can be a tripping hazard.
• Operator must start in a work area without bystanders and must assess
the risk to bystanders, including the risk of serious injury or death
caused by the tool or accessories dropped from an elevated height.
• Operators must be familiar with all prohibited work areas such as
excessive slopes and dangerous terrain conditions.
• Only use clean hydraulic fluid and lubricants that have been
recommended by STANLEY.
• Ensure tools are working properly and safely by performing preventative
maintenance (PM) procedures.
• Repair and service of this tool must only be performed by an authorized
and certified dealer.
• Use only replacement parts,accessories and consumables recommended
by STANLEY.
• Do not force the tool to do the work of a larger tool. Use the correct
tool for your application.
• Use only hoses and hose couplings that are rated for a minimum
working pressure of 2500 PSI (172 BAR).
• Keep hands away from rotating chuck, drill bits or drives.
• Rotating drive sockets and drive extensions can easily entangle rubber-
coated gloves or metal reinforced gloves. Never hold the drive, sockets,
drive extensions or other accessories.
• Do not use in confined spaces. Beware of crushing hazards between the
tool and the workpiece, especially when unscrewing or reversing the
tool.
• Keep the work area well lit.
• Prevent unintentional starting. Ensure the trigger is in the off position
before connecting to power source, picking up or carrying the tool.
Carrying power tools with your finger on the trigger or energizing
power tools that have the trigger on invites accidents.
• In spite of the application of relevant safety regulations and the
implementation of safety devices, certain residual risks cannot be
avoided. These risks are: repetitive strain injury due to incorrect posture
and risk of pinching fingers when changing tool bit or pressing trigger.
Dust and Fumes
• WARNING: Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains chemicals known
to the State of California 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.
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.
Protect yourself and those around you. Research and understand the
materials you are drilling. Follow correct safety procedures and comply with
all applicable national, state or provisional health and safety regulations
relating to them, including, if appropriate arranging for the safe disposal of
the materials by a qualified person.
• When dust or fumes are created, control them at the point of emission.
Direct tool exhaust to minimize disturbance of dust.
• Operate and maintain the tool as recommended in this manual to
minimize dust.
• Use respiratory protection in accordance with employers instruction or
as required by occupational health and safety regulations.
• Avoid prolonged contact with dust. Allowing dust to get into your
mouth, eyes or lay on the skin may promote absorption of harmful
chemicals.
• Select and replace tool bits as recommended in order to prevent an
unnecessary increase in dust or fumes.
• Keep tool handles dry, clean and free from oil and grease. This will
enable better control of the tool.
PPE
• Always wear safety equipment such as impact resistant goggles, ear
protection, head protection, breathing protection and safety shoes at all
times when operating the tool.
• Hands may be exposed to hazards, impacts, cuts, abrasions and heat.
Wear gloves.
• Wear a hardhat if performing overhead work.
• Use PPE that conforms to standards ANSI Z87.1 (Eye and Face

8 | DS12 User Manual
Protection), ANSI Z89.1 (Head Protection), ANSI Z41.1 (Foot Protection)
and ANSI S12.6 (S3.19) (Hearing Protection).
• Do not wear loose fitting clothing, jewelry or gloves with cut or frayed
fingers when operating the tool. Entanglement, choking, scalping and
laceration can occur if loose clothing, personal jewelry, neck wear, hair
or gloves are not kept away from the rotating tool and it’s accessories.
Gloves can become entangled with the rotation drive, causing severed
or broken fingers.
M003
Wear Ear
Protection
M004
Wear Eye
Protection
M016
Wear a Mask
Sound
• Exposure to high noise levels can cause permanent, disabling hearing
loss and other problems, such as tinnitus (ringing, buzzing, whistling
or humming in the ears). Use hearing protection in accordance with
employer’s instructions and as required by occupational health and
safety regulations. Appropriate controls to reduce the risk can include
actions such as damping materials to prevent work pieces from
“ringing”.
• Use and maintain as recommended in the manual to prevent an
unnecessary increase in noise levels.
Vibration
• When using a rotary or percussive tool to perform work related
activities, the operator can experience discomfort in the hands, arms,
shoulders, neck or other parts of the body.
• If you experience numbness, tingling, pain or whitening of the skin
in your fingers or hands, stop using the tool. Tell your employer and
consult a physician.
• Wear warm clothing when working in cold conditions and keep your
hands warm and dry.
• Exposure to vibration can cause disabling damage to the nerves and
blood supply of the hands and arms.
• Do not use worn or ill-fitting sockets or extensions, as this is likely to
cause a substantial increase in vibration.
• Do not touch sockets or accessories during impacting. This increases the
risk of cuts, burns or vibration injuries.
• Use and maintain as recommended in the manual to prevent an
unnecessary increase in vibration.
• Check the vibration level after each service. If higher than normal,
contact your STANLEY dealer.
Hydraulic
• Warning: Hydraulic fluid under pressure could cause skin injection
injury. Do not check for leaks with your hands. If you are injured by
hydraulic fluid, get medical attention immediately.
• Do not let hydraulic oil get on the skin. Hydraulic oil is hot. Wear
Personal Protection Equipment (PPE) at all times.
• If exposed to hydraulic fluid, wash hands immediately.
• Do not exceed the maximum relief valve setting stated on the tool.
• Inspect and clean couplers before use, daily. Replace damaged couplers
immediately.
• Hydraulic circuit control valve must be OFF before coupling or
uncoupling tools. Failure to do so may damage the couplers and cause
overheating of the hydraulic system.
• Ensure the couplers are properly connected and are tight.
• Do not operate the tool at fluid temperatures above 140°F (60°C).
Higher temperatures can cause operator discomfort and damage to the
tool.
• Do not exceed the rated flow and pressure as stated on the tool. Rapid
failure of the internal seals may result.

DS12 User Manual | 9
What is a DS12 Hydraulic Utility Saw
DS12 is a chain saw designed for ductile iron to plastic pipe. Utilizing a
brazed layer diamond coating on a durable chain chassis, this technology
provides improved access with far less excavation in a confined space such as
cutting water main pipe in a ditch.
Specifications
Pressure 2000 PSI (140 BAR)
Flow 7-9 GPM (140 BAR)
Max. Pressure 2000 PSI (140 BAR)
Max. Relief Pressure 2250 PSI (155 BAR)
Recommended Back
Pressure
250 PSI (17 BAR) - Can be used with higher
back pressures with reduced seal life.
Couplers 3/8 inch flush face
Port Size -8 SAE O-ring
Drive Sprocket .444 inch pitch - 12 teeth
Chain Pitch .444 inches (11.3 mm)
Chain Gauge .063 inches ( 1.6 mm)
Tool Weight 26 Lbs (11.8 Kg)
Tool Length 39.5 inches (100 cm)
Width (at handles) 9 inches
Max. Hydraulic Oil
Temp. 140°F (60°C)
HTMA/EHTMA Category Type II, Category D
Sound & Vibration Declaration
Measured A-Weighted sound power
level
108.6 dBA
Measured A-Weighted Sound Pressure 100.6 dBA
Uncertainty 3.39 dBA
Values determined according to noise test code given in ISO 15744 and
11203 using the basic standard ISO 3744. Test conducted by independent
notified body to comply with 2000/14/EC:2005.
Measured Vibration Emission Value:
3-Axis - Trigger Handle
5.0 m/s²
Measured Vibration Emission Value:
3-Axis - Assist Handle
5.3 m/s²
Uncertainty 2.3 m/s²
Parts of a DS12 - Detail A
1 Chain
2 Saw Bar
3 Composite Safety Decal
4 Electrical Danger Decal
5 Hand Guard
6 Tool Handle
7 Trigger Lock
8 Male Hydraulic Coupler
9 Female Hydraulic Coupler
10 Water Hose
11 Trigger
12 Sound Power Level Decal
13 Serial Number and Tool Model
14 Tool Name Tag
15 Assist Handle
Tool Setup
Chain saw chains and bars are very sharp. Do not
touch without proper Personal Protective Equipment
(PPE). Wear leather gloves and only grab the diamond
segments of the chain when adjusting chain tension.
Serious cuts and abrasions can occur.
Do not install, change tool accessories or perform
maintenance on the tool while the hydraulic power
source is connected. Accidental engagement of the tool
can cause serious injury. Disconnect the hydraulic power
source and put the direction control in neutral before
servicing.
Check & Adjust Chain Tension - Detail B
1. Power down the hydraulic power supply and disconnect it from the
tool.
Check
2. Pull the chain around the bar by hand. You should be able to easily pull
the chain around the bar. If the chain does not move, loosen the chain.
3. Measure how far the chain links hang from the saw bar.
4. If the links hang from the bar more than 1/2 inches (12 mm), then you
must tighten the chain.
Adjust
5. Loosen the side cover nuts that hold the saw bar to the saw body.
Note: Do not remove the nuts.
6. Tip bar up and adjust the tension screw.
7. Re-perform the chain tension check and repeat if necessary.
Tool Operation - Detail C
Connect to Water
1. Connect a standard garden hose to the water connection.
Note: Water pressure must be at least 20 PSI.
Connect to a Hydraulic Power Supply
2. Using a calibrated flow and pressure gauge, check the output of the
hydraulic power source. Ensure it matches the flow and pressure in
“Specifications” on page 6. Hydraulic fluid must be 50°F or above.
Preheat if necessary.
Note: Proper hydraulic flow and pressure are necessary to ensure proper
speed of the chain.
3. Ensure that the hydraulic power source is equipped with a relief valve
set to open at the maximum relief pressure (see ”Specifications” on
page 6).
4. Wipe hose couplers with a clean, lint free cloth.
5. Connect the return hose to the male coupler.
6. Connect the pressure hose to the female coupler.
7. Ensure couplers are undamaged, properly connected and are tight.
8. Ensure the tool trigger is not engaged.
9. Power up the hydraulic power supply.
Plan the Cut
10. If cutting pipe 8 - 12 inches in diameter, STANLEY recommends using
the pipe clamp accessory. See “Installing and Using the Saw Clamp
Accessory” on page 10.
11. Ensure the chain guard and hand guard are installed and are not
damaged. Disconnect the tool from the hydraulic power supply and
replace immediately if missing or damaged.
12. Ensure the material being cut is clamped or otherwise secured so that it
cannot move during the cut. Position the saw to avoid pinching the bar
or chain as the material is cut.
13. Ensure that the cut can be made without the chain making contact with

10 | DS12 User Manual
the ground.
14. Mark the planned cut on the material.
15. Plan the cut so that you will not be injured by falling cut-off material.
16. Do not cut with excessive force. The chain could slow and stall, which
could cause premature wear of the saw bar and chain.
Tool Use
17. Wrap your right hand around the trigger handle.
18. Wrap your left hand around the assist handle.
Keep all body parts away from the chain during
operation. Moving chains are sharp and can cause death
or serious injury.
19. Stand in the back of the tool.
20. Hold the tool with a light, but safe, grip taking account of the required
hand-reaction forces, because the risk from vibration is generally greater
when the grip force is higher.
Note: Hold the tool correctly and be ready to counteract normal or sudden
movements. Have both hands available. Holding the tool correctly will help
reduce kickback.
21. Lift the tool, holding the saw bar away from you.
22. Ensure the saw chain is not touching the material to be cut.
23. Hold down the trigger lock.
24. Slowly hold down the trigger.
25. Run the tool for at least two minutes. Ensure the tool is running
properly. If considerable vibration or other defects are detected, stop
operation immediately. Contact your STANLEY dealer for service.
26. Release the tool trigger to stop the tool. Do not operate the tool if it
does not stop when the trigger is released. Immediately power down
the hydraulic power supply. Contact your STANLEY dealer for service.
Note: Release the trigger in case of interruption of the hydraulic power
supply.
27. Feed the saw into the material to be cut. Keep feed force over the
center line of the saw.
28. During the cut, do not stand in the way of the water discharge as it can
contain small pieces of material moving at high velocity.
Note: Do not feed the saw with force greater than 45 Lbs. (20 Kg).
29. When the cut is finished, release the trigger to stop the saw.
Installing and Using the Saw Clamp Accessory
Before cutting, ensure the pipe is in a safe condition to
be cut. Support the work piece so that the cut remains
open during the cutting operation and when finished.
Pinching the chain can cause death, serious injury or
chain damage.
The pipe clamp must be attached to the work piece so
it does not move during the cutting operation and/or
when the cut is finished. Unexpected movement of the
clamp could cause loss of control of the saw and could
result in death or serious injury to the operator.
Do not install, change tool accessories or perform
maintenance on the tool while the hydraulic power
source is connected. Accidental engagement of the tool
can cause serious injury. Disconnect the hydraulic power
source and put the direction control in neutral before
servicing.
Installation
1. Disconnect the tool from the hydraulic power supply.
2. Remove the two nuts and washers that secure the chain guard to the
saw and install the axle over the chain guard, then re-install the two
nuts and washers. Install DS12 to the axle of the saw clamp over the
chain guard.
3. Re-install the chain guard hardware.
Use
1. Place the clamp around the top of the pipe and hand tighten the
adjustment nut.
2. Position the saw with the attached axle on the pipe clamp by sliding the
saw clamp axle through the receiver hole at top of the clamp. Secure
with a snap pin.
3. Ensure that the saw is positioned to allow the handle to pivot during
the cut unobstructed and to ensure that the saw tip doesn’t contact
dirt. If necessary, reposition the saw clamp/saw assembly around the
pipe to optimum cutting position.
4. Tighten the clamp nut with a wrench to ensure that clamp does not
move during cutting operation.
5. When cutting is finished, remove the hydraulic power supply from the
tool, then remove the tool from the clamp.
Cutting Tips
• Position the saw to avoid pinching the blade or the chain as the pipe is
cut. Support both ends of the pipe to prevent movement and possible
injury to the operator.
• Hold the saw so that the chain isn’t in contact with the pipe. Start the
water and activate the saw to full power. Press the chain against the
pipe slowly, applying pressure to cut through the pipe.
• Pressure can be applied to the cut until the saw motor starts to lug.
Maintenance
Chain saw chains and bars are very sharp. Do not
touch without proper Personal Protective Equipment
(PPE). Wear leather gloves and only grab the diamond
segments of the chain when adjusting chain tension.
Serious cuts and abrasions can occur.
Do not install, change tool accessories or perform
maintenance on the tool while the hydraulic power
source is connected. Accidental engagement of the tool
can cause serious injury. Disconnect the hydraulic power
source and put the direction control in neutral before
servicing.
Daily Maintenance
1. Check chain tension and adjust if necessary. See “Check & Adjust Chain
Tension - Detail B” on page 9.
2. Check all hydraulic connections for damage. Replace if damaged.
3. Ensure the chain guard and hand guard are in place and are not
damaged. Replace if missing or damaged.
4. Oil the chain to prevent rust.
Check for Saw Bar Wear - Detail D
The saw bar can develop a bur on the edge of the saw bar channel. If a bur
develops, redress the saw bar.
1. Disconnect the tool from the hydraulic power supply.
2. Remove the saw bar and chain, as shown in Detail “E” on page 4.
3. Using a square, ensure the saw bar channel is square.
4. If a bur exists, use a flat file to file off the bur until the saw bar channel
is square.
5. Check the saw bar bows or bends. If found, replace the saw bar.
6. Periodically remove the saw bar and rotate it. This will allow the saw bar

DS12 User Manual | 11
to wear evenly.
Replacing the Chain and Bar - Detail E
1. Disconnect the tool from the hydraulic power supply.
2. Loosen the chain tension screw.
3. Remove the saw bar and chain.
4. Replace the chain or bar. See “Accessories” on page 11.
5. Reassemble the saw bar and tension the chain as shown in “Check &
Adjust Chain Tension - Detail B” on page 9.
Tool Storage & Transport
Storage
Place a cover over the saw bar and chain. Plug open hydraulic ports. Clean
the tool and store in a clean, dry space that is safe from damage.
Transport
Never transport tool with the hydraulic power supply connected. Secure the
tool to the transport vehicle. Lift only as high as necessary to load. NEVER
lift or transport over people. Ensure tool is secured and will not move during
transport. An unsecured tool could cause personal injury or damage to the
tool.
Tool Disposal
Hydraulic Oil
Hydraulic oil can contaminate the air, ground and water if not properly
recycled. Recycle hydraulic oil in accordance with all State, Federal and local
laws, at your local oil recycling facility.
Hydraulic Hoses
Hang hydraulic hoses to drain. Collect the oil for recycling. Contact your local
municipal recycling authorities for an approved hydraulic hose recycling site.
Tool Body
Drain hydraulic oil from the tool, making sure to collect the oil for recycling.
Disassemble the tool and dispose of all non-metal parts. Recycle the metal
components. Contact your local municipal recycling authorities for recycling
instructions.
Accessories
Description Part Number
18 inch Saw Bar 71047
18 inch Chain 71048
Replacement drive sprocket 71046
Water Flow Meter, 0-7 GPM 60859
25 feet, 1/2 inch Dual Hose with Couplers 31972
50 feet, 1/2 inch Dual Hose with Couplers 31848
3/8 inch Coupler Set 03971
Pipe Clamp Assembly 71055
12 VDC Water Pump w/ Battery Clips DCP30101
12 VDC Water Pump w/ DC Plug DCP30100
Troubleshooting
Problem Possible Cause Solution
Tool vibrates and cuts
rough.
Loose chain tension
Tension chain. See
“Check & Adjust Chain
Tension - Detail B” on
page 9
Too much force while
cutting.
Do not use cutting
force over 45 Lbs. (20
Kg).
Problem Possible Cause Solution
Tool does not cut
straight.
Force is not applied
directly over the center
line of the saw.
Hold the assist handle
closer to the center line
of the saw bar.
Accumulated saw bar
wear or chain wear
Check saw bar for
wear and redress
if necessary (see
“Check for Saw Bar
Wear - Detail D” on
page 10). Replace
the chain and bar
if necessary (see
“Replacing the Chain
and Bar - Detail E” on
page 11).
Tool does not run.
Hydraulic power source
is not functioning.
Ensure the power
source delivers proper
flow and pressure. See
“Specifications” on
page 9.
Hydraulic hoses or
couplers are blocked.
Remove hydraulic
power from the too.
Inspect the hoses
and couplers for
obstruction.
Mechanical failure. Contact your STANLEY
dealer for service.
Tool runs backwards. Hydraulic hoses are
reversed.
Power down the
hydraulic power supply
and connect hoses as
shown in “Connect
to a Hydraulic Power
Supply” on page 9
Trigger is hard to press.
Hydraulic hoses are
reversed.
Power down the
hydraulic power supply
and connect hoses as
shown in “Connect
to a Hydraulic Power
Supply” on page 9
Excessive back pressure
Ensure back pressure
is not greater
than specified in
“Specifications” on
page 9.
Tool runs too slow or
lacks power.
Hydraulic power source
is not functioning.
Ensure the power
source delivers proper
flow and pressure. See
“Specifications” on
page 9.
Hydraulic oil is leaking
from the tool Seal failure Contact your STANLEY dealer for service.

STANLEY Infrastructure
6430 SE Lake Road, Portland, Oregon 97222 USA
[phone] / Fax [phone]
www.stanleyinfrastructure.com
© 2014 Stanley Black&Decker, Inc.
New Britain, CT 06053 USA