CR27
HYDRAULIC
CIRCULAR SAW
USER MANUAL
Safety, Operation and Maintenance
© 2014 Stanley Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
30673 8/2014 Ver. 7
WARNING
TABLE OF CONTENTS
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................... 5
ELECTRICAL HAZARDS ..........................................................................................................................................7
TOOL STICKERS & TAGS ......................................................................................................................................10
HOSE TYPES .......................................................................................................................................................... 11
HOSE RECOMMENDATIONS ................................................................................................................................12
FIGURE 1. TYPICAL HOSE CONNECTIONS .....................................................................................................12
HTMA REQUIREMENTS .........................................................................................................................................13
OPERATION ............................................................................................................................................................14
FIGURE 2. CORRECT ROTATION DIRECTION ................................................................................................. 15
FIGURE 3. COLLET NUT & LOCKING NUT .......................................................................................................15
FIGURE 4. FLUSH CUTTING A LIMB THAT MIGHT SPLIT OR TEAR. ..............................................................16
FIGURE 5. FLUSH CUT ....................................................................................................................................... 16
FIGURE 6. BLADE SHARPENING ...................................................................................................................... 17
FIGURE 7. FILING ANGLE ..................................................................................................................................17
FIGURE 8. SETTING CUTTER TOOTH ANGLE ................................................................................................. 18
TOOL PROTECTION & CARE ................................................................................................................................19
TROUBLESHOOTING ............................................................................................................................................20
SPECIFICATIONS ................................................................................................................................................... 21
ACCESSORIES.......................................................................................................................................................21
CR27 PARTS ILLUSTRATION ................................................................................................................................22
CR27 PARTS LIST ..................................................................................................................................................23
IMPORTANT
To ll out a Product Warranty Validation form, and for information on your warranty,
visit Stanleyhydraulics.com and select the Company tab, Warranty.
(NOTE: The warranty Validation record must be submitted to validate the warranty).
SERVICING: This manual contains safety, operation, and routine maintenance instructions. Stanley Hydraulic
Tools recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an au-
thorized and certied dealer. Please read the following warning.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest authorized and certied dealer, call Stanley Hydraulic Tools at the number listed on the back of this
manual and ask for a Customer Service Representative.
CR27 User Manual ◄ 3
DANGER
WARNING
CAUTION
CAUTION
NOTICE
IMPORTANT
SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair actions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
This safety alert and signal word indicate an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, may result in property damage.
This signal word indicates a situation which, if not avoided, will result in damage
to the equipment.
This signal word indicates a situation which, if not avoided, may result in damage to the equipment.
Always observe safety symbols. They are included for your safety and for the protection of the tool.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and maintenance personnel.
4 ► CR27 User Manual
SAFETY PRECAUTIONS
Tool operators and maintenance personnel must always
comply with the safety precautions given in this manual
and on the stickers and tags attached to the tool and
hose.
These safety precautions are given for your safety. Review them carefully before operating the tool and before
performing general maintenance or repairs.
Supervising personnel should develop additional pre-
cautions relating to the specic work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
The CR27 Hydraulic Circular Saw will provide safe and
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.
• Operator must start in a work area without bystand-
ers. The operator must be familiar with all prohibited
work areas such as excessive slopes and dangerous terrain conditions.
• Establish a training program for all operators to en-
sure safe operation.
• Do not operate the tool unless thoroughly trained or
under the supervision of an instructor.
• Always wear safety equipment such as goggles,
ear, head protection, and safety shoes at all times
when operating the tool.
• Do not overreach. Maintain proper footing and bal-
ance at all times.
• Do not inspect or clean the tool while the hydraulic
power source is connected. Accidental engagement
of the tool can cause serious injury.
• Supply hoses must have a minimum working pres-
sure rating of 2500 psi/175 bar.
• Be sure all hose connections are tight.
• The hydraulic circuit control valve must be in the
OFF position when coupling or uncoupling the tool.
Wipe all couplers clean before connecting. Use only
lint-free cloths. Failure to do so may result in damage to the quick couplers and cause overheating of
the hydraulic system.
• Do not operate a damaged, improperly adjusted, or
incompletely assembled tool.
• Do not operate the tool at oil temperatures above
140 °F/60 °C. Operation at higher oil temperatures
can cause operator discomfort and may damage the
tool.
• To avoid personal injury or equipment damage, all
tool repair, maintenance and service must only be
performed by authorized and properly trained personnel.
• Do not exceed the rated limits of the tool or use the
tool for applications beyond its design capacity.
• Always keep critical tool markings, such as labels
and warning stickers legible.
• Always replace parts with replacement parts recommended by Stanley Hydraulic Tools.
• Check fastener tightness often and before each use
daily.
• Do not wear loose tting clothing when operating the
tool.
• Keep all parts of your body away from the rotating
saw blade.
• Keep the saw blade off all surfaces when starting
the circle saw.
• Do not reverse saw blade rotation direction by
changing uid ow direction.
• Without the use of non-conductive accessories, this
tool is not for use near energized electric lines. Failure to comply with this warning could result in serious personal injury.
• Never cock, jam or wedge the saw blade during operation.
• Eye injury and cutting or severing of body parts is
possible if proper procedures are not followed.
CIRCULAR SAW SPECIFIC SAFETY
PRECAUTIONS
• Do not rely exclusively upon the safety devices built
into the saw. As a circle saw user, several steps
must be taken to keep your cutting jobs free from
accident or injury.
• Ensure the saw blade is correctly mounted and
tightened before each use.
• Keep a good rm grip on the pole saw with both
hands. Place your right hand on the rear handle and
your left hand on the outer tube assembly when op-
erating. Use a rm grip with your thumbs and ngers
encircling the saw handle and outer tube assembly.
A rm grip helps keep control of the saw. Do not let
go.
CR27 User Manual ◄ 5
SAFETY PRECAUTIONS
• Ensure that the direction of rotation of the saw blade
is as prescribed in this manual.
• Cut at the rated operating speeds (gpm).
• Operate the saw at “no load” for 30 seconds in a
safe position and ensure there is no excessive vibration or other defects detected. If considerable vibration or other defects are detected, stop operation
of the tool immediately and determine the cause. Do
not use the tool until the defect is corrected.
• If the tool is dropped with a saw blade installed, the
saw blade should be examined.
• Make sure you’re well rested and mentally alert before operating the saw.
• Do not start cutting until you have a clear work area,
secure footing and a planned drop area for falling
branches.
• Keep all parts of the body away from the saw during
operation.
• Carry the saw with the unit de-energized.
• Do not operate a pole saw that is damaged, improp-
erly adjusted or not completely and securely assembled. Make sure the saw blade stops moving when
the control trigger is released.
• Use extreme caution when cutting small branches.
Twigs may catch the saw blade and be whipped toward the operator or pull the operator off balance.
• Only use saw blades manufactured by Stanley Hydraulic Tools. Stanley assumes no responsibility for
failure in equipment, accidental damage or accidental injury as a result of the use of saw blades not
manufactured by Stanley Hydraulic Tools.
• Always assure the saw blade is sharp. Do not try to
use the tool with a dull saw blade.
• Keep the handle dry, clean and free of hydraulic
uid.
• When using tools near energized transmission lines,
make sure to use only hoses labeled and certied
non-conductive.
• Turn off the power unit or move the hydraulic control
valve to neutral before setting the pole saw down.
• Know the location of buried or covered electrical
services before starting work.
• To avoid personal injury or equipment damage, all
tool repair, maintenance and service must only be
performed by authorized and properly trained per-
sonnel.
6 ► CR27 User Manual
ELECTRICAL HAZARDS
The following guidelines must be followed to prevent
accidental contact with overhead electrical conductors
and/or communication wires and cables. (Ref. ANSI
Z133.1-1982)
All overhead conductors and all communications wires
and cables are considered to be energized with potentially fatal voltages and must never be touched either directly or indirectly. Accidental contact with any overhead
conductors or communication wires and cables can result in death or serious injury.
A close inspection shall be made by the tool operator and by the tool operator’s supervisor to determine
whether an electrical conductor passes through the tree
or passes within reaching distance of the tool operator.
Only qualied tool operators shall be assigned to the
work if an electrical hazard exists.
A second qualied tool operator must be within normal
voice communication during line clearing operations
aloft when the tool operator approaches closer than 10
feet (3 m) to any conductor or electrical apparatus energized in excess of 750 volts, or when roping is required
to remove the branches or limbs.
Tool operators must maintain the following clearances
from energized conductors:
Voltage Range
(phase-to-phase) (kV)
2.1–15.0 2 ft 0 in./0.6 m
15.1–35.0 2 ft 4 in./0.7 m
35.1–46.0 2 ft 6 in./0.75 m
46.1–72.5 3 ft 0 in./0.9 m
72.6–121.0 3 ft 4 in./1.0 m
138.0–145.0 3 ft 6 in./1.05 m
161.0–169.0 3 ft 8 in./1.1 m
230.0–242.0 5 ft 0 in./1.5 m
345.0–362.0 7 ft 0 in./2.1 m
500.0–552.0 11 ft 0 in./3.35 m
700.0–765.0 15 ft 0 in./4.55 m
All other tree workers must maintain a minimum clearance of 10 feet (3 meters) from energized conductors
rated 50 kV phase-to-phase or less. Conductors rated
over 50 kV phase-to-phase require a minimum clearance of 10 feet plus 4/10 of an inch (3 meters plus 10
mm) for each kilovolt over 50 kV.
Minimum Working
Distance
When a lifting device contacts an electrical conductor,
the truck supporting the device is considered to be energized and contact with the truck must be avoided except
when emergency rescue procedures are being carried
out. Emergency rescue should only be attempted by
properly trained personnel familiar with electrical hazards.
Storm work and emergency conditions create special
hazards. During these conditions, only authorized tool
operators shall perform any tree operation.The follow-
ing guidelines must be followed to prevent accidental
contact with overhead electrical conductors and/or communication wires and cables. (Ref. ANSI Z133.1-2000)
Working in Proximity to Electrical Hazards:
An inspection shall be made by a qualied arborist to
determine whether an electrical hazard exists before
climbing, or otherwise entering, or performing work in
or on a tree.
Only qualied line-clearance arborists or qualied line-
clearance arborist trainees shall be assigned to work
where an electrical hazard exists. Qualied line-clearance arborist trainees shall be under the direct supervi-
sion of qualied line-clearance arborist.
A second qualied line-clearance arborists or line-clear-
ance arborist trainees shall be within vision or voice
communication during line-clearing operations aloft
when line-clearance arborists or line-clearance arborist
trainees must approach closer than 10 feet (3.05 meters) to any energized electrical conductor in excess of
750 volts (primary conductor) or when:
1. Branches or limbs being removed cannot rst be
cut (with a pole pruner/pole saw) to sufciently clear
electrical conductors, so as to avoid contact.
2. Roping is required to remove branches or limbs
from such electrical conductors. This does not apply to individuals working on behalf of, or employed
by, electrical system owners/operators engaged in
line-clearing operations incidental to their normal
occupation.
Qualied line-clearance arborists and line-clearance
arborist trainees shall maintain minimum approach distances from energized electrical conductors in accordance with Table 1.
All other arborists shall maintain a minimum approach
distance from energized electrical conductors in accordance with Table 2.
Branches hanging on an energized electrical conductor
shall be removed using non-conductive equipment.
CR27 User Manual ◄ 7
ELECTRICAL HAZARDS
Table 1. Minimum approach distances from energized conductors for qualied line-clearance arborists and
qualied line-clearance arborist trainees.
Nominal
Voltage
kV phase-to-phase
Includes 1910.269
elevation factor, sea
level to 5000 ft1)
ft-in m ft-in m ft-in m
Includes 1910.269
elevation factor,
5001–10,000 ft1)
Includes 1910.269
elevation factor,
10,000–14,000 ft1)
0.05–1.0 Avoid contact Avoid contact Avoid contact
1.1–15.0 2-04 0.71 2-08 0.81 2-10 0.86
15.1–36.0 2-09 0.84 3-02 0.97 3-05 1.04
36.1–46.0 3-00 0.92 3-05 1.04 3-09 1.14
46.1–72.5 3-09 1.14 4-03 1.30 4-07 1.40
72.6–121.0 4-06 1.37 5-02 1.58 5-07 1.70
138.0–145.0 5-02 1.58 5-11 1.80 6-05 1.96
161.0–169.0 6-00 1.83 6-10 2.08 7-05 2.26
230.0–242.0 7-11 2.41 9-00 2.75 9-09 2.97
345.0–362.0 13-02 4.02 15-00 4.58 16-03 4.96
500.0–550.0 19-00 5.80 21-09 6.63 23-06 7.17
765.0–800.0 27-04 8.34 31-03 9.53 33-10 10.32
1)
Exceeds phase-to-ground; elevation factor per 29 CFR 1910.269.
Table 2. Minimum approach distances to energized conductors for persons other than qualied line-clearance arborists and qualied line-clearance arborist trainees.
Nominal Voltage
kV phase-to-phase
1)
Distance
ft-in m
0.0–1.0 10-00 3.05
1.1–15.0 10-00 3.05
15.1–36.0 10-00 3.05
36.1–50.0 10-00 3.05
50.1–72.5 10-09 3.28
72.6–121.0 12-04 3.76
138.0–145.0 13-02 4.00
161.0–169.0 14-00 4.24
230.0–242.0 16-05 4.97
345.0–362.0 20-05 6.17
500.0–550.0 26-08 8.05
785.0–800.0 35-00 10.55
1)
Exceeds phase-to-ground.
8 ► CR27 User Manual
ELECTRICAL HAZARDS
The tie-in position should be above the work area and
located in such a way that a slip would swing the arborist
away from any energized electrical conductors or other
identied hazard.
While climbing, the arborist should climb on the side of
the tree that is away from energized electrical conductors as required in Tables 1 and 2.
Footwear, including lineman’s overshoes, having electrical-resistant soles, shall not be considered as providing
any measure of safety from electrical hazards.
Rubber gloves, with or without leather or other protective covering, shall not be considered as providing any
measure of safety from electrical hazards.
Ladders, platforms and aerial devices, including insulated aerial devices, shall be subject to minimum approach
distances in Table 1 and 2.
Aerial devices and attached equipment (such as chippers) contacting energized electrical conductors shall be
considered energized. Contact shall be avoided, except
where emergency rescue procedures are being carried
out. Emergency rescue should be performed in accordance with 4.3.
STORM WORK AND EMERGENCY
CONDITIONS-LINE CLEARANCE
Line clearance shall not be performed during adverse
weather conditions such as thunderstorms, high winds
and snow and ice storms.
Qualied line-clearance arborists and qualied line-
clearance arborists trainees performing line clearance
in the aftermath of a storm or under similar conditions
shall be trained in the special hazards associated with
this type of work.
Line-clearance operations shall be suspended when
storm work or emergency conditions develop involving
energized electrical conductors. Electrical system own-
ers/operators shall be notied immediately.
CR27 User Manual ◄ 9
DANG ER
THIS SAW BLADE OF THE CR27 WIL L CONTINUE TO ROTATE
FOR UP TO 15 SECONDS OR MORE AF TER RELEASING T HE
ON/OFF TRIGGER. DURING THIS “COAST DOWN” TIME,
CONTACT WITH THE BLADE OF THE CR27 MAY RESULT IN
SEVERE PERSONAL INJURY.
AFTER RELEASING THE ON /OFF TRIGGER, SAW OPERATORS
MUST BE CERTAIN THAT THE BLADE HAS COME TO A COMPLETE
STOP BEFORE PLACING THE SAW ON THE GROU ND, LOWERING
THE SAW INTO THE TRUCKS BUCKET, STORING THE SAW OR
CONTACTING THE BLADE IN ANY WAY. FAILURE TO OBSERVE
THESE PRECAUTIO NS MAY RESULT IN SEVERE PERSONAL
INJURY.
OTHER WORKERS AND BYSTANDERS MUST STAY CLEAR OF
THE WORK AREA TO AVOID SEVERE PERSO NAL INJURY RESULTING
FROM CONTACT WITH THE SAW BLADE AS WELL AS FALLING
LIMBS, BRANCHES AND OTHER D EBRIS.
St anley Hydraulic Tools
3810 SE Naef Road
Milwaukie, OR 97062
Model
TOOL STICKERS & TAGS
DANGER
Failure touse hydraulic hose labeledand certified
as non-conductivewhen using hydraulic toolson
or nearelectric lines mayresultindeathor
serious injury.
Forproper andsafe operationread ownersmanual
and mwkesure that you havebeen properly
trained incorrect procedures requiredfor work
ELECTROCUTION
on oraround electric lines.
HAZARD
27694
Danger Decal
03784
5-7 GPM Sticker
12412
Electrical Warning Decal
05153
Stanley Decal
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE WHEN USING HYDRAULIC
TOOLS ON OR NEAR ELECTRICAL LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
BEFORE USING HOSE LABELED AND CERTIFIED AS NON-
CONDUCTIVE ON OR NEAR ELECTRIC LINES BE SURE THE
HOSE IS MAINTAINED AS NON-CONDUCTIVE. THE HOSE
SHOULD BE REGULARLY TESTED FOR ELECTRIC CURRENT LEAKAGE IN ACCORDANCE WITH YOUR SAFETY
DEPARTMENT INSTRUCTIONS.
2. A HYDRAULIC LEAK OR BURST MAY CAUSE OIL INJECTION INTO THE BODY OR CAUSE OTHER SEVERE
PERSONAL INJURY.
A. DO NOT EXCEED SPECIFIED FLOW AND PRESSURE
FOR THIS TOOL. EXCESS FLOW OR PRESSURE MAY
CAUSE A LEAK OR BURST.
B. DO NOT EXCEED RATED WORKING PRESSURE OF
HYDRAULIC HOSE USED WITH THIS TOOL. EXCESS
PRESSURE MAY CAUSE A LEAK OR BURST.
C. CHECK TOOL HOSE COUPLERS AND CONNECTORS
DAILY FOR LEAKS. DO NOT FEEL FOR LEAKS WITH
YOUR HANDS. CONTACT WITH A LEAK MAY RESULT
IN SEVERE PERSONAL INJURY.
15863
Danger Decal
24827
Name Tag
DANGERDANGER
D. DO NOT LIFT OR CARRY TOOL BY THE HOSES. DO
NOT ABUSE HOSE. DO NOT USE KINKED, TORN OR
DAMAGED HOSE.
3. MAKE SURE HYDRAULIC HOSES ARE PROPERLY CON-
NECTED TO THE TOOL BEFORE PRESSURING SYSTEM.
SYSTEM PRESSURE HOSE MUST ALWAYS BE CONNECTED TO TOOL “IN” PORT. SYSTEM RETURN HOSE
MUST ALWAYS BE CONNECTED TO TOOL “OUT” PORT.
REVERSING CONNECTIONS MAY CAUSE REVERSE
TOOL OPERATION WHICH CAN RESULT IN SEVERE
PERSONAL INJURY.
4. DO NOT CONNECT OPEN-CENTER TOOLS TO CLOSED-
CENTER HYDRAULIC SYSTEMS. THIS MAY RESULT IN
LOSS OF OTHER HYDRAULIC FUNCTIONS POWERED BY
THE SAME SYSTEM AND/OR SEVERE PERSONAL INJURY.
5. BYSTANDERS MAY BE INJURED IN YOUR WORK AREA.
KEEP BYSTANDERS CLEAR OF YOUR WORK AREA.
6. WEAR HEARING, EYE, FOOT, HAND AND HEAD PROTECTION.
7. TO AVOID PERSONAL INJURY OR EQUIPMENT DAMAGE,
ALL TOOL REPAIR MAINTENANCE AND SERVICE MUST
ONLY BE PERFORMED BY AUTHORIZED AND PROPERLY
TRAINED PERSONNEL.
10 ► CR27 User Manual
IMPORTANT
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
TOOL BEFORE USING IT.
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE
OPERATION MANUAL.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
IMPORTANT
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE
TAG TO BE REMOVED ONLY BY
SEE OTHER SIDE
SAFETY TAG P/N 15875 (Shown smaller then actual size)
TOOL BEFORE USING IT.
OPERATION MANUAL.
TOOL OPERATOR.
SEE OTHER SIDE
HOSE TYPES
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the hydraulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use with
Stanley Hydraulic Tools. They are:
Certied non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certied non-
conductive is the only hose authorized for use near electrical conductors.
Wire-braided (conductive) — constructed of synthetic rubber inner tube, single or double wire braid reinforcement, and weather resistant synthetic rubber cover. This hose is conductive and must never be used near
electrical conductors.
Fabric-braided (not certied or labeled non-conductive) — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certied non-conductive and must never be used near electrical conductors.
HOSE SAFETY TAGS
To help ensure your safety, the following DANGER tags are attached to all hose purchased from Stanley Hydraulic
Tools. DO NOT REMOVE THESE TAGS.
If the information on a tag is illegible because of wear or damage, replace the tag immediately. A new tag may be
obtained from your Stanley Distributor.
THE TAG SHOWN BELOW IS ATTACHED TO “CERTIFIED NON-CONDUCTIVE” HOSE
DANGER
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
WHEN USING HYDRAULIC TOOLS ON OR NEAR ELECTRIC LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
ON OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSE AND FITTING WITH A CLEAN DRY ABSORBENT CLOTH TO REMOVE DIRT AND MOISTURE AND
TEST HOSE FOR MAXIMUM ALLOWABLE CURRENT LEAKAGE IN ACCORDANCE WITH
SAFETY DEPARTMENT INSTRUCTIONS.
DO NOT REMOVE THIS TAG
SEE OTHER SIDE
SIDE 1
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE
OR HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE.
KEEP HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT
CONTACT DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION
AND SEVERE PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, ABRASION, CUTTING, OR
CONTACT WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT
USE HOSE TO PULL OR LIFT TOOLS, POWER UNITS, ETC.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAM-
AGE TO COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE
IMMEDIATELY. NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
(Shown smaller than actual size)
DANGER
DANGER
SEE OTHER SIDE
SIDE 2
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
DANGER
DANGER
1. DO NOT USE THIS HYDRAULIC HOSE ON OR NEAR ELECTRIC LINES. THIS HOSE IS
NOT LABELED OR CERTIFIED AS NON-CONDUCTIVE. USING THIS HOSE ON OR NEAR
ELECTRICAL LINES MAY RESULT IN DEATH OR SERIOUS INJURY.
2. FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND ELECTRIC LINES.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP HOSE
AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, CUTTING, OR CONTACT
WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE HOSE TO
PULL OR LIFT TOOLS, POWER UNITS, ETC.
DO NOT REMOVE THIS TAG
SEE OTHER SIDE
SIDE 1
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
(Shown smaller than actual size)
DANGER
SEE OTHER SIDE
SIDE 2
DO NOT REMOVE THIS TAG
DO NOT REMOVE THIS TAG
CR27 User Manual ◄ 11
Min. Working Pressure
USE
(Press/Return)
HOSE RECOMMENDATIONS
Certied Non-Conductive Hose - Fiber Braid - for Utility Bucket Trucks
Oil Flow Hose Lengths Inside Diameter
GPM LPM FEET METERS INCH MM PSI BAR
4-9 15-34 up to 10 up to 3 3/8 10 Both 2250 155
Conductive Hose - Wire Braid or Fiber Braid -DO NOT USE NEAR ELECTRICAL CONDUCTORS
4-6 15-23 up to 25 up to 7.5 3/8 10 Both 2500 175
4-6 15-23 26-100 7.5-30 1/2 13 Both 2500 175
5-10.5 19-40 up to 50 up to 15 1/2 13 Both 2500 175
5-10.5 19-40 51-100 15-30 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
5-10.5 19-40 100-300 30-90
10-13 38-49 up to 50 up to 15 5/8 16 Both 2500 175
5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 51-100 15-30
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
10-13 38-49 100-200 30-60
5/8 16 Pressure 2500 175
13-16 49-60 up to 25 up to 8
3/4 19 Return 2500 175
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
13-16 49-60 26-100 8-30
PRESSURE
<<< FLOW
RETURN
FLOW >>>
Figure 1. Typical Hose Connections
Tool to Hydraulic Circuit Hose
Recommendations
The chart to the right shows recommended
minimum hose diameters for various hose
lengths based on gallons per minute (gpm)/
liters per minute (lpm). These recommenda-
tions are intended to keep return line pressure
(back pressure) to a minimum acceptable lev-
el to ensure maximum tool performance.
This chart is intended to be used for hydraulic
tool applications only based on Stanley Hy-
draulic Tools tool operating requirements and
12 ► CR27 User Manual
should not be used for any other applications.
All hydraulic hose must have at least a rated
minimum working pressure equal to the maxi-
mum hydraulic system relief valve setting.
All hydraulic hose must meet or exceed
specications as set forth by SAE J517.
HTMA / EHTMA REQUIREMENTS
HTMA / EHTMA REQUIREMENTS
HTMA
HYDRAULIC SYSTEM REQUIREMENTS
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
Maximum back pressure
(at tool end of the return hose)
Measured at a max. uid viscosity of:
(at min. operating temperature)
Temperature: Sufcient heat rejection
capacity to limit max. uid temperature to:
(at max. expected ambient temperature)
Min. cooling capacity at a temperature
difference of between ambient and uid
temps
NOTE:
Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
Filter
Min. full-ow ltration
Sized for ow of at least:
(For cold temp. startup and max.
dirt-holding capacity)
4-6 gpm 7-9 gpm 9-10.5 gpm 11-13 gpm
(15-23 lpm) (26-34 lpm) (34-40 lpm) (42-49 lpm)
1500 psi 1500 psi 1500 psi 1500 psi
(103 bar) (103 bar) (103 bar) (103 bar)
2100-2250 psi 2100-2250 psi 2200-2300 psi 2100-2250 psi
(145-155 bar) (145-155 bar) (152-159 bar) (145-155 bar)
250 psi 250 psi 250 psi 250 psi
(17 bar) (17 bar) (17 bar) (17 bar)
400 ssu* 400 ssu* 400 ssu* 400 ssu*
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
140° F 140° F 140° F 140° F
(60° C) (60° C) (60° C) (60° C)
3 hp 5 hp 6 hp 7 hp
(2.24 kW) (3.73 kW) (5.22 kW) (4.47 kW)
40° F 40° F 40° F 40° F
(22° C) (22° C) (22° C) (22° C)
25 microns 25 microns 25 microns 25 microns
30 gpm 30 gpm 30 gpm 30 gpm
(114 lpm) (114 lpm) (114 lpm) (114 lpm)
TYPE I TYPE II
TOOL TYPE
TYPE RR
TYPE III
Hydraulic uid Petroleum based
(premium grade, anti-wear, non-conductive)
Viscosity (at min. and max. operating temps)
NOTE:
When choosing hydraulic uid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic uids with a viscosity index over 140 will meet the requirements
over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
EHTMA
100-400 ssu* 100-400 ssu* 100-400 ssu* 100-400 ssu*
(20-82 centistokes)
CLASSIFICATION
HYDRAULIC SYSTEM
REQUIREMENTS
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
NOTE: These are general hydraulic system requirements. See tool specication page for tool specic requirements
B
3.5-4.3 gpm 4.7-5.8 gpm 7.1-8.7 gpm 9.5-11.6 gpm 11.8-14.5 gpm
(13.5-16.5 lpm) (18-22 lpm) (27-33 lpm) (36-44 lpm) (45-55 lpm)
1870 psi 1500 psi 1500 psi 1500 psi 1500 psi
(129 bar) (103 bar) (103 bar) (103 bar) (103 bar)
2495 psi 2000 psi 2000 psi 2000 psi 2000 psi
(172 bar) (138 bar) (138 bar) (138 bar) (138 bar)
C
D
CR27 User Manual ◄ 13
IMPORTANT
OPERATION
PREOPERATION PROCEDURES
PREPARATION FOR INITIAL USE
Each unit as shipped has no special unpacking or assembly requirements prior to usage. Inspection to assure the unit was not damaged in shipping and does not
contain packing debris is all that is required. After installation of a saw blade a unit may be put to use.
CHECK HYDRAULIC POWER SOURCE
1. Using a calibrated owmeter and pressure gauge,
check that the hydraulic power source develops a
ow of 5–7 gpm/19–26 lpm at 1000–2000 psi/70–
140 bar.
2. Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100–2250 psi/145–
155 bar minimum.
3. Check that the dual spool valve is set to the hydraulic system type (open-center (OC) or closed-center
(CC) operation).
CHECK TOOL
1. Make sure all tool accessories are correctly installed. Failure to install tool accessories properly
can result in damage to the tool or personal injury.
2. There should be no signs of leaks.
3. The tool should be clean, with all ttings and fasten-
ers tight.
CHECK TRIGGER MECHANISM
Check that the trigger operates smoothly and is free to
travel between the ON and OFF positions.
SETTING THE DUAL SPOOL FOR OC
(OPEN-CENTER) OR CC (CLOSEDCENTER) OPERATION
This tool is furnished with a ON/OFF spool
commonly referred to as a “dual spool” which permits
adjustment so the tool may be operated on either an
open-center (OC) or closed-center (CC) hydraulic
system. The dual spool is normally set to the OC
position at time of manufacture. The dual spool can
also be disabled so that the tool may be set to OC
only operation. For more details, please refer to the
following instructions.
SETTING FOR OPEN-CENTER (OC) OR
CLOSED-CENTER (CC) OPERATION
1. To set the tool for open-center (OC) system operation turn the selector screw located in the top of the
valve spool fully out (counter-clockwise) until it hits
the stop.
2. To set the tool for closed-center (CC) system operation turn the selector screw located in the top of the
valve spool fully in (clockwise) until it bottoms.
TO DISABLE DUAL SPOOL OPERATION
AND CONVERT TO OPEN-CENTER ONLY
OPERATION
1. Turn the selector screw located in the top of the
valve spool fully out (counter-clockwise) until it hits
the stop.
2. Insert the small plug from the kit (furnished with the
tool) into the hole located in the top of the selector
screw. Tap the plug down using a small punch and
hammer. DO NOT USE ANY ADHESIVES.
TO DISABLE DUAL SPOOL OPERATION
AND CONVERT TO CLOSED-CENTER
ONLY OPERATION
1. Turn the selector screw located in the top of the
valve spool fully in (clockwise) until it bottoms.
2. Insert the small plug from the kit (furnished with the
tool) into the hole located in the top of the selector
screw. Tap the plug down using a small punch and
hammer. DO NOT USE ANY ADHESIVES.
BLADE INSTALLATION
1. Handle the saw blade with care. The cutting edges
are sharp and careless handling could result in injury.
2. Install the blade over the motor shaft and onto the
xed collar so that the points of the teeth on the
blade are facing clockwise as viewed from the front
of the motor (see Figure 2).
3. Install the moveable collar followed by the collet nut
(see Figure 3). Tighten the collet nut hard (not wrist
tight).
4. Install the locking nut with internal taper facing toward the collet nut and tighten it hard against the
collet nut.
5. As a nal tightening procedure, with a wrench on
each of the nuts, tighten the locking nut one half
wrench at further.
14 ► CR27 User Manual
OPERATION
BLADE INSTALLATION
CLOCKWISE ROTATION
nect the return hose rst and disconnect it last to minimize
or avoid trapped pressure within the saw motor.
3. Observe ow indicators stamped on hose couplers to
be sure that oil will ow in the proper direction. The female
coupler is the inlet coupler.
NOTE:
The pressure increase in uncoupled hoses left in the
sun may result in making them dif cult to connect.
When possible, connect the free ends of operating
hoses together.
OPERATING PROCEDURES
Observe all safety precautions.
DO NOT OPERATE A CIRCLE SAW UNLESS YOU HAVE
BEEN SPECIFICALLY TRAINED TO DO SO.
Keep all parts of the body away from the saw blade during
operation of the tool.
Carry the saw with the unit de-energized and the blade
away from the body.
Always connect the hoses to the tool hose couplers before
energizing the power source.
Do not operate a circle saw that is damaged, improperly
adjusted or is not completely and securely assembled.
Keep the saw and handles clean and free of oil and con-
taminates.
OPERATION
BLADE INSTALLATION
Figure 1. Correct Rotation Direction
CLOCKWISE ROTATION
nect the return hose rst and disconnect it last to minimize
or avoid trapped pressure within the saw motor.
3. Observe ow indicators stamped on hose couplers to
be sure that oil will ow in the proper direction. The female
coupler is the inlet coupler.
NOTE:
The pressure increase in uncoupled hoses left in the
sun may result in making them dif cult to connect.
When possible, connect the free ends of operating
hoses together.
OPERATING PROCEDURES
Observe all safety precautions.
DO NOT OPERATE A CIRCLE SAW UNLESS YOU HAVE
BEEN SPECIFICALLY TRAINED TO DO SO.
Keep all parts of the body away from the saw blade during
operation of the tool.
Carry the saw with the unit de-energized and the blade
away from the body.
Always connect the hoses to the tool hose couplers before
energizing the power source.
Do not operate a circle saw that is damaged, improperly
adjusted or is not completely and securely assembled.
Keep the saw and handles clean and free of oil and con-
taminates.
Do not hang the saw on utility wires or cables.
Do not leave the saw hanging in a tree.
Do not leave cut branches in a tree.
Branches bent under tension are considered hazardous.
Do not allow binding of the saw blade.
LOCKING NUT
CONNECT HOSES
1. Wipe all hose couplers with a clean lint-free cloth
2. Connect the hoses from the hydraulic power source
3. Observe ow indicators stamped on hose couplers
NOTE:
The pressure increase in uncoupled hoses left in the
sun may result in making them difcult to connect.
When possible, connect the free ends of operating
hoses together.
OPERATING PROCEDURES
Observe all safety precautions.
• DO NOT OPERATE A CIRCLE SAW UNLESS YOU
• Keep all parts of the body away from the saw blade
• Carry the saw with the unit de-energized and the
Figure 2. Correct Rotation Direction
Figure 3. Collet Nut & Locking Nut
before making connections.
to the hose couplers on the saw. It is a good prac-
tice to connect the return hose rst and disconnect
it last to minimize or avoid trapped pressure within
the saw motor.
to be sure that oil will ow in the proper direction.
The female coupler is the inlet coupler.
HAVE BEEN SPECIFICALLY TRAINED TO DO
SO.
during operation of the tool.
blade away from the body.
OPERATION
COLLET NUT
• Always connect the hoses to the tool hose couplers
before energizing the power source.
• Do not operate a circle saw that is damaged, improperly adjusted or is not completely and securely
assembled.
• Keep the saw and handles clean and free of oil and
contaminates.
• Do not hang the saw on utility wires or cables.
• Do not leave the saw hanging in a tree.
• Do not leave cut branches in a tree.
• Branches bent under tension are considered haz-
ardous.
• Do not allow binding of the saw blade.
• The saw blade will continue to spin for up to 5 sec-
onds or more after releasing the ON/OFF trigger.
During this “coast down” time, contact with the saw
blade may result in severe personal injury. Refer to
page 2. On early model saws the “coast down” time
will be up to 15 seconds.
• Use extreme caution when sawing small size brush
and saplings. Slender material may catch in the saw
blade and be thrown toward the operator.
• Keep the saw blade away from all surfaces when
starting rotation of the blade.
• Do not reverse blade rotation direction by changing
oil ow direction. The saw is designed to operate in
only one direction.
• Do not use the saw around energized transmission
lines.
• Do not inspect, clean or repair the saw with the power source operating or with operating pressure at the
saw. Accidental engagement of the tool can cause
serious injury.
• Do not operate the saw at oil temperatures above
140 °F/60 °C. Operation at higher temperatures can
cause higher than normal temperatures at the tool
which can cause operator discomfort.
• After releasing the ON/OFF trigger, be certain that
the saw blade has come to a complete stop before
placing the saw on the ground, lowering the saw into
the truck’s bucket, storing the saw or contacting the
blade in any way. Failure to observe these precautions may result in severe personal injury.
• The saw operator must keep other workers and bystanders clear of the work area, including the area
into which cut limbs or debris fall. Failure to heed
this precaution can result in severe personal injury.
CR27 User Manual ◄ 15
IMPORTANT
OPERATION
MAKING CUTS
WARNING
The following are general wood cutting procedures
and techniques. Differences in the terrain,
vegetation, and type of wood will make this
information more or less valid for particular areas.
For advice on specic wood cutting problems or
techniques for your area, consult your local Stanley
representative or your county agent. They can often
provide information that will make your work safer
and more productive.
1.
Move the hydraulic circuit control valve to the ON
position to pressurize the circuit.
2. Maintain a rm grip on the saw handle. While main-
taining rm footing and balance, position the saw
blade near the material to be cut.
3. Squeeze the ON/OFF valve handle trigger and allow
the saw blade to reach FULL speed.
4. In sawing limbs which have a tendency to split or
tear when making a single saw ush cut, Figure 4, it
is advisable to make more than one cut. The rst cut
is made a few inches from the point of the ush cut
removing the weight of the limb being trimmed out
and leaving a short stub. The stub is then ushed off
as shown in Figure 5. Whenever practical, the cut
shall be treated with tree paint if it is larger than 1
inch in diameter. This technique will avoid breaking
the lateral which you are trying to save or splitting
the remaining limb down the center as the ush cut
is made.
FINAL CUT
THE FIRST CUT IS TO TAKE WEIGHT
OFF BEFORE THE FINAL CUT TO
PREVENT THE LIMB FROM SPLITTING
DOWN THE CENTER.
The saw blade must reach FULL speed before
attempting a cut.
LATERAL BRANCH
BRANCH TO BE CUT
PLACING BLADE
TOWARDS LATERAL
BRANCH WILL LEAVE
EDGE FLUSH WITH
LATERAL BRANCH
NO STUB LEFT
Figure 4. Flush Cutting a Limb That Might Split or Tear.
Figure 5. Flush Cut
WARNING
Do not cut material that is directly overhead. When it
falls it may cause operator injury.
5.
Watch the saw reaction to making a cut. Control the
movement of the saw.
6. Release the ON/OFF trigger to stop saw blade rotation.
7. Reposition the saw to make the next cut and continue operating the saw as stated above.
WARNING
After releasing the ON/OFF trigger, saw operators
must be certain that the saw has come to a complete
stop after a few seconds or more. The saw blade
must come to a complete stop before placing the saw
into the truck’s bucket, storing the saw or contacting
the blade in any way. Failure to observe this warning
may result in severe personal injury.
16 ► CR27 User Manual
OPERATION
AFTER OPERATION
1. Wipe the saw thoroughly with a clean dry or slightly
oiled cloth.
2. Clean tree pitch and residue from the blade. Handle
the blade with care to avoid getting cut by the sharp
teeth.
3. Check all fasteners for tightness.
4. When the saw is not in use, store horizontally in a
clean, dry space and protected from damage.
5. Protect the blade teeth and keep the teeth sharp. A
sharp blade will cut cleaner and faster.
BLADE CARE
Every day visually check the blade for cracks and warp-
age. Cracks will lead to a break and “out of at” will
cause excessive vibration. Make sure the spindle locknut is tight.
When sharpening, never use a at le which may leave
a square corner in the gullet. Because of high speed
vibration, this becomes a point from which a crack will
start.
Do not let gum, sap or dirt build up underneath the cutting edges. This adds undue friction and reduces cutting
efciency due to loss of clearance.
Inspection of the cutting teeth should be made often during each day’s use. It is faster to touch up the teeth with
a few strokes of the le than to allow the teeth to get dull.
Dull teeth cause loss of cutting capacity and too much
friction. A sharp spare blade is a good back-up in case
of trouble.
BLADE SHARPENING
BLADE TEETH
Using a le holder with a 7/16 inch round le (Stanley
Part Number 11299), place the le holder at on top of
the cutter with the le against the cutter tooth.
CUTTER
CUTTER TOOTH
FILE HOLDER
FILE
Maintain a 20° angle and always le outwards on each
right or left cutter tooth. File only with a slight pressure
against the cutter tooth (not on top of the cutter) during
the forward stroke. Release pressure as you pull the le
back. The le will only cut during the forward stroke.
While ling, always try to keep the le holder perpendicular to the side of the blade. Try not to move the le
holder up or down or move the le holder to the setting
of the tooth.
Figure 7. Filing Angle
TOP OF CUTTERS
The top of each cutter is factory ground to ensure the
best cutting performance. Normally, the tops of the cut-
ters will not require ling unless the edge is badly worn
or damaged.
If the top of a cutter requires ling, use a smooth at le
to give the cutter its original shape. After ling, ensure
that all cutters have the same length and prole.
SETTING TOOTH ANGLE
A sharp outside corner and an exact angle setting will
give maximum cutting performance. Special setting tool
(Stanley part number 34653) is required to verify or properly set the angle of each cutter tooth at .040 inch/1 mm.
Match one of the grooves in the setting tool to the blade
thickness. Place the setting tool over the cutter near the
cutter tooth and bend the tooth until the angle on the setting tool touches the side of the blade. DO NOT OVER
SET. Over-setting will cause rough cutting and vibration
which may result in stress cracks and eventual blade
failure.
PLACE FILE HOLDER FLAT ON TOP OF CUTTER
Figure 6. Blade Sharpening
CR27 User Manual ◄ 17
OPERATION
Figure 8. Setting Cutter Tooth Angle
COLD WEATHER OPERATION
If the saw is to be used during cold weather, preheat
the hydraulic uid at low engine speed. When using the
normally recommended uids, uid temperature should
be at or above 50 °F/10 °C (400 ssu/82 centistokes) before use.
18 ► CR27 User Manual
NOTICE
TOOL PROTECTION & CARE
In addition to the Safety Precautions found in
this manual, observe the following for equipment
protection and care.
• Make sure all couplers are wiped clean before connection.
• The hydraulic circuit control valve must be in the
OFF position when coupling or uncoupling hydraulic tools. Failure to do so may result in damage to
the quick couplers and cause overheating of the hydraulic system.
• Always store the tool in a clean dry space, safe from
damage or pilferage.
• Make sure the circuit PRESSURE hose (with male
quick disconnect) is connected to the IN port. The
circuit RETURN hose (with female quick disconnect)
is connected to the opposite port. Do not reverse cir-
cuit ow. This can cause damage to internal seals.
• Always replace hoses, couplings and other parts
with replacement parts recommended by Stanley
Hydraulic Tools. Supply hoses must have a minimum working pressure rating of 2500 psi/172 bar.
• Do not exceed the rated ow and pressure. Refer
to the Specications page in this manual for correct
ow and pressure rates. If ow and pressure are ex-
ceeded, rapid failure of the internal seals may result.
• Always keep critical tool markings, such as warning
stickers and tags legible.
• Tool repair should be performed by experienced
personnel only.
• Make certain that the recommended relief valves
are installed in the pressure side of the system.
• Do not use the tool for applications for which it was
not intended.
CR27 User Manual ◄ 19
TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem. When
diagnosing faults in operation of the saw, always make sure the hydraulic power source is supplying the correct
hydraulic ow and pressure to the saw as listed in the table. Use a owmeter know to be accurate. Check the ow
with the hydraulic uid temperature at least 80 °F/27 °C.
PROBLEM CAUSE REMEDY
Tool will not operate. Hydraulic system not engaged or
running.
Hydraulic system control valve is
OFF.
Tool not connected to the hydraulic
system.
Trigger and valve spool stick. Damaged trigger guard. Have repaired by an authorized
High back pressure. Determine cause of high back
Tool reverse plumbed to the
system.
Valve spool or spool bore scored by
contaminated hydraulic uid.
Saw cuts poorly. Blade is dull. Replace with sharp blade.
Saw is running backwards. Check direction of rotation. Correct
Blade installed backwards. Install the blade correctly. Blade
Saw slows excessively under load. System relief valve set too low. Check system relief and adjust
Tool motor worn. Have inspected and repaired by an
Hydraulic oil leaks from motor shaft. Motor shaft seal worn or failed. Have inspected and repaired by an
Hydraulic oil leaks between valve
handle and outer tube handle.
Oil tube seals worn or oil tubes
worn.
Engage or start hydraulic system.
Turn the system control valve ON.
Connect tool to the system.
Stanley Hydraulic Tools dealer.
pressure and return line and
remove restriction.
Correctly connect the pressure and
return lines.
Have repaired by an authorized
Stanley Hydraulic Tools dealer.
rotation is counterclockwise as
viewed from the motor side of the
saw blades.
teeth point in direction of rotation,
counterclockwise as viewed from
the motor side of the saw blades.
relief valve to crack open at 2100
psi.
authorized Stanley Hydraulic Tools
dealer.
authorized Stanley Hydraulic Tools
dealer.
Have inspected and repaired by an
authorized Stanley Hydraulic Tools
dealer.
20 ► CR27 User Manual
SPECIFICATIONS
Capacity............................................................................................................................9 in. Diameter/23 cm Blade
Pressure Range................................................................................................................ 1000–2000 psi/70–140 bar
Maximum Back Pressure...................................................................................................................... 250 psi/17 bar
Flow Range ................................................................................................................................. 5–7 gpm/19–26 lpm
Porting ...................................................................................................................................................-8 SAE O-ring
Connect Size and Type ............................................................................... 3/8 in. NPT × -8 SAE Male Pipe Adapter
Hose Whips ............................................................................................................................................................ No
Weight ..................................................................................................................................................9.75 lbs/4.4 kg
Overall Length ....................................................................................................................................... 79 in./200 cm
Maximum Fluid Temperature .................................................................................................................. 140 °F/60 °C
ACCESSORIES
Description Part No.
9 in./23 cm Saw Blade, 44 tooth ........................................................................................................................ 00425
9 in./23 cm Brushcutter Saw Blade ...................................................................................................................34356
File Holder with 7/32 Round File (for sharpening brushcutter blades) .............................................................. 11299
Setting Tool (for setting cutter angles on brushcutter) ....................................................................................... 34653
Certied Non-Conductive Dual Oil Resistant Hose, 3/8 in. Diameter × 10 ft with Guards.................................05005
CR27 User Manual ◄ 21
CR27 PARTS ILLUSTRATION
Torque to 44 in-lb Lubricated
22 ► CR27 User Manual
CR27 PARTS LIST
PART
ITEM
NO. QTY DESCRIPTION
1 00042 2 OIL TUBE ASSY
2 24829 1 OUTER TUBE ASSY
3 18089 6 CAPSCREW, BUTTONHEAD, 1/4-20 ×
4 00227 1 FIXED COLLAR
5 00103 1 RETAINING RING
6 07407 2 CAPSCREW, HEX SOCKET HEAD, 10-
7 00118 1 RETAINING RING
8 00008 1 RETAINING RING
9 00007 1 BALL BEARING
10 24842 1 MOTOR SHAFT
11 04856 1 RETAINING RING
12 19215 1 SEAL LINER *
13 00173 1 QUAD RING *
14 60804 1 O-RING *
15 03227 1 NEEDLE ROLLER
16 04106 2 DRIVE GEAR
17 00289 2 DOWEL PIN
18 07305 2 HAND GUARD
19 11458 2 LINER
20 04041 4 DU BUSHING
21 04044 1 NEEDLE ROLLER
22 07612 1 IDLER SHAFT
23 00020 1 O-RING*
24 07652 1 GEAR HOUSING ASSY (INCL ITEMS 17,
25 24827 1 NAME TAG
26 00753 8 CAPSCREW, HEX SOCKET HEAD, 10-
27 44887 1 FRONT BEARING HOUSING
28 16668 4 O-RING, 7/16 × 9/16 × 1/16 -017*
29 00026 1 O-RING, 3/16 × 5/16 × 1/16 -008*
30 19875 1 SELECTOR SCREW
31 16070 1 RETAINING RING
32 22807 1 PLUG (FURNISHED IN 26414 LOCK-
33 31633 1 VALVE SPOOL (CR27891 ONLY)
67128 1 VALVE SPOOL (MODEL CR27191P
34 07626 1 O-RING, 1/2 × 5/8 × 1/16*
35 31630 1 VALVE HANDLE
36 01605 2 O-RING (INCL W/ ITEM 37)
37 00936 2 ADAPTER
38 07627 1 O-RING, 5/8 × 3/4 × 1/16*
3/8
32 × 3/4
20 & 24)
24 × 1-1/4
OUT KIT)
ONLY)
PART
ITEM
NO. QTY DESCRIPTION
39 65151 1 SPRING
40 22147 2 CAPSCREW, HEX SOC FLAT HD, 1/4-20
41 51183 1 TRIGGER
42 01534 1 ROLL PIN
43 51182 1 TRIGGER GUARD
44 12412 1 ELECTRICAL WARNING STICKER
45 27694 1 DANGER STICKER
46 03784 1 5–7 GPM STICKER
47 05153 1 STANLEY STICKER
48 15863 1 WARNING STICKER
49 N/A 1 DIELECTRIC TEST STICKER
50 34356 1 SAW BLADE
51 00125 1 MOVEABLE COLLAR
52 24853 1 COLLET NUT
53 24850 1 LOCKING NUT
54 31186 1 POPPET
55 34303 1 SPRING
56 34257 1 POPPET STOP
57 03364 1 O-RING*
58 03709 1 PLUG
59 24837 4 HELICOIL
03972 1 FEMALE COUPLER
03973 1 MALE COUPLER
03971 1 COUPLER SET
29829 1 SEAL KIT
× 3/4
* DENOTES PART IN SEAL KIT
MOTOR ASSY P/N-31700 (INCL ITEMS 7 THRU 17, &
20 THRU 28)
CR27 User Manual ◄ 23
Stanley Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon 97267-5698 USA
(503) 659-5660 / Fax (503) 652-1780
www.stanleyhydraulics.com
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