RGC 6122225 User manual

HYDRAULIC HAND-HELD
CHAIN SAW
INSTRUCTIONS
REIMANN & GEORGER CORPORATION
CONSTRUCTION PRODUCTS BUFFALO, NY
P/N 6122225 3/24/15

Skin injection hazard:
Oil under pressure easily punctures
skin causing serious injury, gan-
grene or death. If you are injured by
escaping oil, seek medical attention
immediately.
• Do not use fingers or hands to
check for leaks.
• Do not hold hose or couplers while
thehydraulicsystemispressurized.
• Depressurize the hydraulic system
before servicing.
Before operating the saw, read and
understand the following explana-
tions in this manual:
• Pull-In
Pull-in can occur when the blade
at the bottom of the bar contacts
a foreign object, such as a nail,
or when the blade is pinched in
the cut.
The saw will be suddenly and
forcefully pulled away from the
operator.
• Push-back
Push-back can occur when the
blade at the top of the bar con-
tacts a foreign object, such as a
nail, or when the blade is pinched
in the cut.
The saw will be suddenly and
forcefully pushed back toward the
operator.
• Kickback
Kickback can occur when the
chain at the guide bar tip contacts
anything. The bar of the saw will
travel upward and back, toward
the operator.
Failure to observe this warning could
result in severe injury or death.
IMPORTANT SAFETY INFORMATION
SAFETY
ALERT
SYMBOL
This symbol is used to call your attention to
hazards
or unsafe practices which could result in
an injury or property damage. The signal word,
defined below, indicates the severity of the hazard.
The message
after the signal word provides
information for pre-
venting or avoiding the hazard.
Immediate hazards which, if not avoided, WILL
result in severe injury or death.
Hazards which, if not avoided, COULD result in
severe injury or death.
Hazards or unsafe practices which, if not
avoided, MAY result in injury or property damage.
Read and understand all of the
instructions and safety
information in this manual before
operating or servicing this tool.
Refer also to the instruction
manual, which is listed under
“Other Publications.”
Electric shock hazard:
This tool is not insulated. When
using this unit near energized electri-
cal lines, use only certified non-con-
ductive hoses and proper personal
protective equipment.
Failure to observe this warning could
result in severe injury or death.
1

Wear a hard hat when using this tool.
Failure to observe this warning could
result in severe injury or death.
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from flying
debris or hydraulic oil.
Wear hearing protection when using
this tool.
Long-term exposure to high noise
levels could result in hearing loss.
Saw body, bar, blade and other
components will be hot during and
after use. Use care when handling
the saw. Hot surfaces can cause
serious burns.
Failure to observe this warning could
result in severe injury or death.
Some types of timber can produce
hazardous dust when cut. Wear a
dust mask to prevent breathing
hazardous dust.
Failure to observe this warning
could result in temporary breathing
difficulty or serious injury.
IMPORTANT SAFETY INFORMATION
• Do not change accessories, inspect, adjust
or clean tool when it is connected to a power
source. Accidental start-up can result in
serious injury.
• Keep the handles clean, dry and free of
hydraulic fluid.
• Maintain a firm grip on tool, using both
hands with
thumbs and fingers encircling the
handles at all
times. Serious injury can result
if an operator does not control the tool.
• Do not lock the trigger in the Power-ON
position. Operator cannot stop tool when
trigger is locked.
• Do not remove or modify the trigger
actuator. Accidental start-up can result in
serious injury.
• Wear protective gloves when handling or
adjusting the chain. The chain can cut even
when stationary.
Failure to observe these warnings could result
in severe injury or death.
Wear foot protection when using this
tool.
Failure to observe this warning could
result in serious injury.
To transport the chain saw:
• Allow the chain to stop rotating.
• Wait for the chain to cool.
• Use an appropriate guide bar sheath or
scabbard.
• Carry the saw with the guide bar toward the
rear. Failure to observe these warnings could
result in
severe injury or death.
2

1SAFETY
Read and understand all of the instructions
and safety information in this manual before
operating or servicing this tool.
1.1 SAFETY
Safety is essential in the use and maintenance of
RGC tools and equipment. This instruction manual and any decals on the tool
provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety
information provided.
1. Only trained personnel shall operate the saw or do repairs. A trained person is one who has read and thoroughly
understands this instruction manual and related equipment manuals and, through training and experience, has shown
knowledge regarding the safe operational procedures.
2. Sawing area must be kept clear of unauthorized personnel at all times. Place barricades or secure the area with signs
and a roped boundary to prevent personnel injury.
3. Never use the saw in an explosive atmosphere and/or near combustible material that could be ignited by a spark.
4. Do not use a saw that shows any signs of damage. Do not use the saw if the chain does not stop rotating when the
power-activating trigger lever is released.
5. The guard provides protection against contact with moving parts, ejected debris, broken chain, thrown water and
concrete slurry. Never run the saw without the chain guard in place.
6. Never allow anyone to stand in front of, or in line with, the chain forward of the guard.
7. Always use safety footwear, a snug fitting wet suit, safety goggles or face shields, and hearing and head protection
devices. Safety shoes MUST provide good footing to prevent slipping or falling down. Gloves protect the hands
from chips and should be worn.
8. Do not use the saw when you are tired or fatigued.
9. Never operate the saw under the influence of drugs, alcohol, or medication.
10. Always carry the saw in its de-energized state.
11. Keep the saw handles dry, clean, and free of oil or fuel.
12. Do not start cutting without first de-energizing electrical wiring near the cutting site or imbedded in the concrete.
13. Before cutting through a wall, check both sides for possible obstructions.
14. Prior to cutting, plan your cuts to prevent pinching of the bar or personnel injury from falling concrete.
15. Always hold the saw with both hands during operation. Use a firm grip on the handles.
16. Never exceed the flow and pressure rating of the saw which is 8 GPM at 2000 psi.
3

17. Do NOT attempt to adjust the saw during operation.
18. Keep clothing and all parts of the body away from moving parts of this saw when connected to a power source or
being used.
19. Always shut off the hydraulic power and sources before disconnecting the hoses or servicing the saw.
20. Always shut off the hydraulic sources when not using the equipment.
4

2SPECIFICATIONS
ORIGINAL INSTRUCTIONS
2.1 TECHNICAL DATA
The following specifications apply to the Chain Saw 8 GPM.
ENGLISH METRIC
Tool Physicals
Weight 9.5 lbs. (3.9 kg.)
Dimensions (with 16 in. bar) 31.75 x 10 x 8.5 inch (806 x 254 x 224 mm)
Hydraulic Requirements (8 GPM SAW)
Type of System Open-Center or Closed Center
Minimum Flow Rate 4 gpm (15 lpm)
Recommended Flow Rate 6 gpm (22.5 lpm)
Maximum Flow Rate 8 gpm (30 lpm)
Max Pressure Range 2000 psi (138 bar)
Back Pressure (Max) 200 psi (13.8 bar)
Hose Length (Max) 50 ft. (15 m)
Couplings ½” HTMA flush face
Operation (8 GPM SAW)
Chain Speed (Max) 3527 FPM (1075 M/Min)
Operation (4 GPM SAW)
Chain Speed (Max) 1814 FPM (552 M/Min)
Vibration and Sound
Vibration level a= 5.65 M/S^2
Sound pressure @ 1Meter 88 dba
2.3 RECOMMENDED HYDRAULIC OIL
Viscosity 140-225 SUS @ 100°F (28-45 cSt @ 38°C)
40 min. SUS @ 210ºF (8 min. cSt @ 99ºC)
Flash Point 340ºF min. (170ºC min.)
Pour Point -30ºF min. (-34ºC min.)
Many types of compatible hydraulic oil are available through your local dealer/distributor. As an original equipment
manufacturer, RGC uses a Grade ISO VG 32 hydraulic turbine oil.
Hydraulic oil types are too numerous to list in this manual. If you have any question concerning the type of oil suitable for C150
operation, please consult your local supplier or Reimann & Georger Corporation for details.
2.4 NAMEPLATE AND SERIAL NUMBER TAG
It is important to identify the saw completely and accurately whenever ordering spare parts or requesting assistance in service.
The saw has a product nameplate that states the model and serial numbers. The saw label should appear as the sample nameplate
shown in Figure 2-1. Record the model and serial numbers for future reference.
5

Figure 2-1.
Typical Tool Product Nameplate
MODEL ___________________________________
SERIAL NUMBER __________________________
GPM____________________PSI________________
HYDRA TOOL
MODEL
SERIAL NO.
GPM PSI
6

3OPERATION
Identification
6
4 5
3
7
9
2
1
12
14 13
3 4 5 6
1 2
8 7
10
11
9
14 12
1.
Bar
2.
Chain
3. Shroud
4. Front Handle
5. Control Handle
6. Trigger Actuator
7. Trigger
Parts of the Chain Saws
8. Trigger Spool
9. Lower Handle
10. Tank Port
11. Pressure Port
12. Hydraulic Motor with Serial Number
13. Automatic Oiler Adjustment Screw
14. Spike Rack
7

Chain Saw Basics
This section introduces some basic principles of chain saw use
(Hazard Prevention, Compression and Tension,
and Cutting
Techniques). For more information on proper tree-trimming
and felling procedures, contact
the National Arborist Association at the address shown under
“Safety” at the front of this manual.
HAZARD PREVENTION
The cutting action of this chain saw is performed by a
chain-
type blade driven at high speed by a powerful hydraulic motor.
When used carefully and properly, the chain saw is a highly
effective cutting tool.
When used improperly, or when anything interferes with
the
normal rotation of the blade, the operator could
very suddenly and very quickly lose control of the saw.
Such loss of control can result in harm to the operator.
The three terms that describe loss of control are pull-in,
push-back, and kickback.
Pull-In
Pull-in can occur when the blade at the bottom of the
bar is doing the cutting. If the blade is suddenly pinched
in the cut, or if it contacts a foreign object such as a
nail, the saw may be suddenly and forcefully pulled away from
the operator.
Figure 1 – Pull-In
Kickback
Kickback is much more hazardous than pull-in or push- back.
When kickback happens, the entire saw may rotate suddenly
and forcefully. The bar of the saw may quickly travel upward
and back, toward the operator.
Kickback can occur when the blade at the guide bar tip
contacts anything while the chain is rotating. Some causes
for kickback are:
• using the guide bar tip forcutting.
• contacting a nail or other metal object when
cutting.
• accidental contact when cutting more than one
branch at a time.
Figure 3 – Using Guide Bar Tip for Cutting
PULL
Figure 4 – Contact with Metal Objects
Push-Back
Push-back can occur when the blade at the top of the
bar is doing the cutting. If the blade is suddenly pinched
in the cut, or if it contacts a foreign object such as a
nail, the saw will be suddenly and forcefully pushed back
toward the operator.
Figure 2 – Push-Back
Metal
Objects
Figure 5 – Cutting More Than One Branchat a Time
PUSH
8

Chain Saw Basics (cont’d)
Preventing Pull-In, Push-Back and Kickback
The chain/bar combination and shroud are intended to
prevent or reduce the likelihood and severity of kick-
back. Verify that these items are in good working order
(chain is sharp and properly tensioned, shroud is not
damaged, etc.) to get the maximum benefit from these
features. If worn or damaged, replace these items with
Greenlee Utility replacement parts.
GeneralTips:
• Maintain the saw properly. Verify that the blade is
sharp and has been properly tensioned.
• Do not allow the guide bar tip to contact anything.
• Do not over-reach.
• Do not use the saw above shoulder height.
• Cut only one limb, branch, or log at a time.
• Be aware that small-diameter limbs or branches are
more likely to catch the blade, causing pull-in or
kickback.
Figure6
Cutting Procedure:
• Hold the chain saw securely with both hands and
maintain a firm, secure grip.
• Bring the chain saw to full rpm before starting the cut.
Maintain full rpm until the cut is completely finished.
• Press spike rack against the limb or trunk.
• Apply a moderate amount of downward force to the saw.
• Cut straight through. Do not twist the saw during the cut.
• Be alert for the limb to shift, which may pinch the saw in
the cut.
• Be alert for a limb or branch under tension to spring
back when the cut is complete and the tension is
released.
Do notallow
the
guide bar
tip to
contact
anything.
Verifythatthe chainis sharp
andproperlytensioned.
Figure 7 – Cutting Procedure
Bring chain to full rpm.
Maintain full rpm until the
cut is finished.
Apply a
moderate
amount of
downward
force.
Holdsawsecurely
with both hands.
Pressthe spikerack against
the limb or trunk.
9

Side View
1
Compression 2
Tension
Chain Saw Basics (cont’d)
Site Preparation Tips
• Prepare the cutting area by clearing away brush,
branches, vines, etc.
• Remove any unnecessary tools and coil up excess
hydraulic hose.
• Survey the limb, branch or tree to predict the direction or
path of fall. Be sure that no personnel are in that area.
Some factors that will influence the direction or path of
fall of the tree include, but are not limited to:
– weight distribution of the limbs and branches.
The weight distribution can be changed by
pruning.
– the lean of the tree. A tree that leans will tend to fall in
the direction it leans.
– wind direction. Do not fell a tree in strong winds.
• If working in a municipal area, plan the direction of fall so
that a limb or tree doesn’t fall into a roadway, strike a
nearby building, contact nearby power lines, etc.
• If the tree is on an incline, work uphill from the fall
path. A tree or branch might tend to bounce or roll
downhill.
• Plan and clear two emergency exit routes, in case the tree
falls in an unexpected direction.
COMPRESSION AND TENSION
Any branch or log will have two forces acting on it
— compression and tension. As the branch or log is cut,
compression tends to push the two halves toward each other.
Tension tends to pull the two halves apart.
Refer to the illustrations. A log or limb supported at both
ends
has the compression on the top. A log or limb supported at one
end has the compression on the bottom.
Make the first cut on the compression side. Cut through
approximately 1/3 of the log’s diameter. Make the second cut
on the tension side. This will decrease the likelihood that the
saw will become pinched in the cut.
Figure 8 – Compression on Top
Figure 9 – Compression on Bottom
Side View
Tension 2
1
Compression
10

Chain Saw Basics (cont’d)
CUTTING TECHNIQUES
Pruning
Pruning is the process of cutting limbs or small branches off of
a tree. Whenever possible, prune lower branches first so that
higher branches have a clear fall
path.
When pruning, the compression is along the bottom of
the limb
or branch. Make the first cut at the bottom, and final cut at the
top of the branch.
Felling
Felling refers to cutting a tree down. Felling a tree
consists of two cuts — a notch cut and a felling cut.
Begin by planning the direction of fall. Make the first cut —
the notch cut — from the direction in which you
want the tree to fall. After making the notch cut, remove the
wedge-shaped piece of wood from the notch.
On the other side of the trunk, begin the felling cut
approximately two inches above the bottom of the notch.
Keeping two escape routes in mind, proceed with
the felling
cut. Do not cut completely through — leave
approximately 1/10
of the diameter of the trunk to act as
a hinge. This hinge will
help to control the direction of fall.
Figure 10 – Felling
Bucking
Bucking refers to cutting the fallen tree into short sections.
Make the first bucking cut on the compression
side, and make
the second cut on the tension side.
Be aware that the section may fall in an unexpected direction
when the cut is complete.
Sectioning
Sectioning is a method of bucking a fallen tree that is too large
for a single pass of the saw. Refer to the illustra-
tions below.
As always, make the first cuts on the compression side. Make
the final cut on the tension side.
Figure 11 – Sectioning
1
1/10
Felling Cut
45°
2
Notch Cut
¼
3
Limbing
Limbing is cutting limbs and branches from a fallen
tree. Keep in mind that the trunk might shift as limbs are
removed from it.
Remove limbs from the upper side of the trunk only.
Then proceed to Bucking.
4
Make last cut from
tensionside.
11

2
HandleAdjustment
Do not change accessories, inspect, adjust or clean tool
when it is connected to a power source. Accidental
start-up can result in serious injury.
Failure to observe this warning could result in
severe
injury or death.
The control handle on this saw can be set to one of three
positions — horizontal, 30°, or 60°. Choose the setting that
maximizes cutting efficiency and operator comfort, based
on the particular cutting task.
1. Remove the two knobs and cover.
2. Remove the two flange nuts, bar, and chain.
Figure12
4. Set the handle to the new handle orientation.
• Position #1: Horizontal
• Position #2: 30°
• Position #3: 60°
5. Apply a small amount of thread locking and sealing
compound, such as Loctite® 242® Threadlocker
or equivalent, to the threads in the mount plate and
the threads of the cap screws. Follow the
manufacturer’s instructions for applying and curing.
Tighten the cap screws to 9 to 10 newton-meters (80 to
90 in-lb).
6. Install the bar and chain onto the mount plate and secure
loosely with two flange nuts. Ensure that the adjustment
dog is located in the lowest hole in the bar.
Figure 14 – Bar Installation
Step1.
Remove knobs and cover. Step 2.
Remove flange
nuts,barand chain.
3
2
1
1 3
2
1
2
3 1 2 3
Ensure
adjustment
dog is here.
3. Remove the four 1/4–20 x .625 cap screws from the
mount plate.
Figure13
Figure 15 – Direction of Chain Travel
Top View
Cutting Edge
3 21
1 3
Side View
1
2
3 1 2 3
7. Adjust the tension — refer to “Adjusting Chain
Tension” under “Saw Chain and Bar Maintenance.”
8. Install the cover over the standoffs and secure the cover
with two cover knobs.
12

Setting the Super Spool™
The Super Spool™ allows the tool to be used with either Open-
Center or Closed-Center hydraulic systems.
Open-Center Hydraulic System
Use a wrench to turn the Super Spool™ until the letter “O”
on the spool is aligned with the letter “C” on the tool handle.
Closed-Center Hydraulic System
Use a wrench to turn the Super Spool™ until the letter
“C” on the spool is aligned with the letter “C” on the
tool
handle.
Connecting Hoses
1. Move the flow lever on the hydraulic power source to
the OFF position.
2. Stop the hydraulic power source.
3. Connect the tank hose to the tank (or return) port
on
the power source, and then to the tank port on the tool.
4. Connect the pressure hose to the pressure port or hose
coupler on the tool, and then to the pressure
port on the
power source.
Figure 16 – Settingthe Super Spool™ Position
Closed-Center Open-Center
Hoses and Fittings
Installation and Maintenance
Refer to publication 99930323, SAE J1273 (Hose and Hose
Assemblies).
Replacement
Refer to a Greenlee Utility catalog or Greenlee Utility
publication 99910322, Low Pressure Quick Couplers,
Adapters and Hoses.
HoseConnections
Tool Port Identification
One of three methods is used to identify the pressure
and tank ports of Greenlee Utility tools. Match your
tool
to
this table.
DisconnectingHoses
1. Move the flow lever on the hydraulic power source to
the OFF position.
2. Stop the hydraulic power source.
3. Disconnect the pressure hose from the power
source, and then from the tool.
4. Disconnect the tank hose from the tool, and then from
the power source.
5. Install dust caps over the ports to prevent
contamination.
TypicalSetup
Pressure Port
Tank Port
P
T
or
In
Out
or
9/16"–18 SAE O-ring Boss
(smaller port)
3/4"–16 SAE O-ring Boss
(larger port)
13

Before operating the saw, read and
understand the following explana-
tions in this manual:
• Pull-In
Pull-in can occur when the blade
at the bottom of the bar contacts
a foreign object, such as a nail,
or when the blade is pinched in
the cut.
The saw will be suddenly and
forcefully pulled away from the
operator.
• Push-back
Push-back can occur when the
blade at the top of the bar con-
tacts a foreign object, such as a
nail, or when the blade is pinched
in the cut.
The saw will be suddenly and
forcefully pushed back toward the
operator.
• Kickback
Kickback can occur when the
chain at the guide bar tip contacts
anything. The bar of the saw will
travel upward and back, toward
the operator.
Failure to observe this warning could
result in severe injury or death.
Wear a hard hat when using this tool.
Failure to observe this warning could
result in severe injury or death,
Operation
Electric shock hazard:
This tool is not insulated. When
using this unit near energized electri-
cal lines, use only certified non-con-
ductive hoses and proper personal
protective equipment.
Failure to observe this warning could
result in severe injury or death.
Skin injection hazard:
Oil under pressure easily punctures
skin causing serious injury, gan-
grene or death. If you are injured by
escaping oil, seek medical attention
immediately.
• Do not use fingers or hands to
check for leaks.
• Do not hold hose or couplers while
thehydraulicsystemispressurized.
• Depressurize the hydraulic system
before servicing.
Saw body, bar, blade and other
components will be hot during and
after use. Use care when handling
the saw. Hot surfaces can cause
serious burns.
Failure to observe this warning could
result in severe injury or death.
14

Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from flying
debris or hydraulic oil.
Wear hearing protection when using
this tool.
Long-term exposure to high noise
levels could result in hearing loss.
Wear foot protection when using this
tool.
Failure to observe this warning could
result in serious injury.
Operation (cont’d)
• Check the operation of the automatic oiler fre-
quently. Refer to “Checking and Setting the
Automatic Chain Oiler” in this manual.
• Check the chain frequently for proper tension and
sharpness. Tension and sharpen as necessary. Refer to the
instructions under “Saw Chain and Bar Maintenance.”
• Check the fluid level of the power source reservoir
frequently. The automatic oiler uses hydraulic fluid to
lubricate the bar and chain, and will cause the fluid
level to drop.
Emergency stop procedure:
1. Release the trigger.
2. Shut off the hydraulic power source.
Do not disconnect tool, hoses or fittings while the power
source is running or if the hydraulic fluid is hot. Hot
hydraulic fluid could cause serious burns.
Vibration hazard:
Apply just enough pressure to do the work. Applying
excess pressure to the tool can cause operator discomfort
or temporary numbness.
Failure to observe this precaution can result in injury.
1. Grasp the front handle with your left hand and the trigger handle with your right hand.
Note: These hand placement instructions are for
both right-handed and left-handed users.
2. Press down on the trigger actuator and pull the trigger until the saw reaches full rpm.
3. Feed the rotating saw chain using a steady, constant pressure.
Note: Cut straight through the wood — do not twist
the saw in the cut.
4. To stop the saw, release the trigger.
5. When the tool is not in use, stop the power source to reduce heat and wear
15

16

4MAINTENANCE
Wear eye protection when operating
or servicing this tool.
Failure to wear eye protection could
result in serious eye injury from
flying debris or hydraulic oil.
Do not reverse hydraulic flow. Operation with
hydraulic flow reversed could cause tool
malfunc- tion. Connect the pressure hose and tank
hose to the proper ports.
SCHEDULE
Use this schedule to maximize the tool’s service
life.
Notes: Keep all decals clean and legible. Replace
decals when necessary.
When disposing of any components (hydraulic hoses,
hydraulic fluid, worn parts, etc.), do so in
accordance with federal, state and local laws or
ordinances.
Daily
1. Wipe all tool surfaces clean.
2. Inspect the entire chain before use. Tension and
sharpen the chain as instructed under Saw Chain
and Bar Maintenance. An improperly sharpened,
dull, worn or damaged chain increases the risk of
kickback.
3. Check the operation of the automatic oiler before
use as instructed under Checking and Setting the
Automatic Chain Oiler. An improperly set oiler
can accelerate the wear of the chain and bar.
4. Inspect the hydraulic hoses and fittings for
signs of leaks, cracks, wear or damage. Replace
if necessary.
5. Install dust caps over the hydraulic ports when the
tool is disconnected.
Monthly
1. Perform a thorough inspection of the hydraulic
hoses and fittings as described in publication
99930323, SAE J1273 (Hose and Hose Assemblies).
2. Perform the Bar Service procedure as described
under Saw Chain and Bar Maintenance.
Annually
If required by your organization’s regulations, have the
tool inspected by an Greenlee Utility authorized service
center.
CHECKING AND SETTING
THE AUTOMATIC CHAIN OILER
The automatic chain oiler provides a constant supply of
oil to lubricate the bar and chain whenever the saw is
operating. An adjustment screw controls the amount of
oil supplied.
1. Run the saw at full rpm.
2. If the tip of the saw gives off a fine spray of oil,
the automatic oiler is working properly. If the saw
does not give off a spray of oil, adjust the oiler.
Note: For better results, hold saw so that the tip of
the saw blade is pointing toward a clean sheet of
paper or cardboard and run the saw at full rpm.
If the automatic oiler is working properly, the paper
or cardboard should soon show small droplets of
oil.
3. Stop the hydraulic power source.
4. Twist the adjustment screw 1/2 turn as follows:
• clockwise to decrease the oiler output.
• counterclockwise to increase the oiler output.
Figure17 – AutomaticOiler Adjustment Screw
Automatic Oiler
Adjustment Screw
5. Start the hydraulic power source.
6. Repeat until the oiler output is adjusted corr ectly.
18

STRAIGHTEDGE
Maintenance (cont’d)
SAW CHAIN AND BAR MAINTENANCE
New Chain Break-In
1. Run the saw at low chain speed without cutting
wood for 2 to 3 minutes. Check the output from
the automatic oiler.
2. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool. Check the
tension and adjust if necessary.
3. Connect the hoses. Start the power source. Make a
few easy cuts at moderate chain speed.
4. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool. Check the
tension and adjust if necessary.
5. Connect the hoses. Start the power source. Use the
saw for moderate cuts during the next 30 minutes of
use.
Checking Chain Tension
1. Stop the hydraulic power source. Disconnect the
hoses. Allow the bar and chain to cool.
2. Pull the saw chain around the bar. The chain
should rotate around the bar easily. If it does not,
refer to “Chain is Difficult to Rotate Manually” in
the Troubleshooting table.
3. Check the tension as follows:
Pull the saw chain away from the bar (refer to the
illustration) using approximately 4.4 newtons (2 lb)
of force. The clearance between the chain and bar
should be approximately 3.2 mm (1/8"). If there
is too much or too little clearance, proceed to
“Adjusting Chain Tension.”
Figure 18 – Proper Chain Tension
AdjustingChainTension
1. Loosen the two bar flange nuts.
2. Turn the saw chain tension adjusting screw until
the proper tension is achieved, as follows:
Pull the saw chain away from the bar (refer to the
illustration) using approximately 4.4 newtons (2
lb)
of force. The clearance between the chain and
bar should be approximately 3.2 mm (1/8").
3. Hold the bar nose up and tighten the two bar flange
nuts. Torque to 16.9 newton-meters (150 in-lb).
4. Check the chain tension again.
5. Rotate the chain around the bar manually. If you
hear a clicking noise, the chain drive links are
hitting the bar. Repeat the “Adjusting Chain
Tension” procedure.
Bar Service
1. Mark the top side of the bar with a grease pencil
or marker.
2. Remove the chain and bar. Use a small cleaning
brush to remove all residue from the bar groove.
3. Clean the oil passage at the base of the guide bar.
Use any instrument small enough to thoroughly
clean the passage.
4. Check the bar rails for wear by placing a
straight edge against the side of the bar and one
cutter. Refer to Figure 19.
• Clearance between the bar and straight edge
indicates that the bar rails are not worn.
• If the chain leans and there is little or no clearance
between the bar and straightedge, the bar rails
are worn and the bar should be replaced.
Figure 19 – Checking Rails for Wear
CHAIN IS STRAIGHT CHAIN LEANS
Approx.
4.4Newtons
(2 lb.)
Approx.
3.2 mm
(1/8")
Clearance
Rails are
not worn.
No
Clearance
Rails are worn.
Replace bar.
19

Maintenance (cont’d)
5. Inspect the rim sprocket and sprocket adapter.
Replace if worn or damaged. Refer to Figure 20.
Figure 20 – Rim Sprocket and Sprocket Adapter
Sprocket Adapter Rim
Sprocket
6. Use the mark made in Step 1 to install the bar
upside down, so that the bar will wear evenly.
7. Install the chain as shown in Figure 21. Adjust the
tension of the chain as described under “Adjusting
Chain Tension.”
Figure 21 – Direction of Chain Travel
Top View
Cutting Edge
Side View
20