Oregon 680ES User manual

© 2022 OREGON®, Oregon Tool Inc. Specifications are subject to change without notice. REV09062022 F/N 577451
680ES
OPERATOR MANUAL
WARNING: READ AND UNDERSTAND ALL SAFETY WARNINGS AND ALL INSTRUCTIONS BEFORE YOU
USE THIS EQUIPMENT.
Failure to follow the warnings and instructions may result in fire, serious injury, or death.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE
Original Document

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ENGLISH
This instruction manual contains translations of a manual drafted in English and are provided to assist those
who do not speak English as their first language. Being a technical writing, some terms may not have a like or
equivalent meaning as translated. Therefore, you should not rely on this translation, and should
cross-reference the English version, where relying on the translated instructions could result in harm to your
person or property.
TABLE OF CONTENTS
SYMBOLS AND LABELS
OREGON 680ES NAMES AND TERMS
PRODUCT IDENTIFICATION
INTRODUCTION
SAFETY RULES
UNPACKING AND ASSEMBLY
FUELING
OPERATION
TRANSPORTING & STORING
MAINTENANCE
TROUBLESHOOTING
REFERENCE
EMISSIONS
TECHNICAL SPECIFICATIONS
SERVICE CENTERS
DECLARATION OF CONFORMITY
4
7
9
10
11
15
22
25
36
37
45
46
47
49
50
51
Table of Contents

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SYMBOLS AND LABELS
THE FOLLOWING SYMBOLS ARE FOUND THROUGHOUT THIS MANUAL
AND/OR ON THE SAW AND ARE DESIGNED TO MAKE YOU AWARE OF POTENTIAL HAZARDS OR UN-
SAFE PRACTICES.
Symbols & Labels
SYMBOLS AND LABELS
THE FOLLOWING SYMBOLS ARE FOUND THROUGHOUT THIS MANUAL
AND/OR ON THE SAW AND ARE DESIGNED TO MAKE YOU AWARE OF POTENTIAL HAZARDS OR UNSAFE
PRACTICES.
SOUND POWER
Sound power level is 117 dB(A).
Symbols & Labels
SAFETY ALERT
Indicates that the text that
follows explains a danger,
warning or caution.
READ INSTRUCTIONS
The original instruction manual contains
important safety and
operating information. Read and follow the
instructions carefully.
WEAR LONG PANTS
Wear long pants when operating the saw.
WEAR FOOT PROTECTION
Wear appropriate closed-toe boots when
operating the saw.
WEAR HAND PROTECTION
Wear hand protection when
operating the saw.
KERF WIDTH
Do not insert tool into slot
narrower than chain.
VENTILLATION REQUIRED
Use tool in a well ventillated area
WEAR EYE, HEARING AND RESPIRA-
TORY PROTECTION
WEAR HEAD PROTECTION
Wear eye , hearing
and respiratory protection and a protective
helmet when
operating the saw.
DO NOT USE A LADDER
Never stand on a ladder when using the
saw.
FIRE DANGER
Risk of fire if warnings not
followed.
SLIPPERY SURFACE
Unsure footing can lead to
accidents.
ONE-HANDED HOLD
Do not operate the saw
with one hand.
BEWARE OF KICKBACK
Kickback can cause severe injuries.
TWO-HANDED HOLD
Operate the saw with two hands, securely
gripping both handles

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OREGON, OregonTool Inc.
4909 SE Int. Way Portland
OR 97222 USA
LABELS ON YOUR SAW
EMISSIONS LABELS
NAMEPLATE LABEL
Symbols & Labels Names & Terms
OREGON 680ES NAMES AND TERMS
Air box intake
The only entry point of air into the engine
Bar pad
The mounting pad on the powerhead that helps assure proper alignment of the guidebar.
Bar slot
The slot feature on the guidebar that fits over the bar studs.
Bystander safety zone
A 6 m (20 ft) circle around the operator that must remain free from bystanders, children and pets.
Chain catcher
A device for retaining the chain if it breaks or derails.
Chain pitch
The distance between any three consecutive rivets on the chain divided by two.
Chain tensioning screw
An adjustment screw used to set proper tension on the chain and compensate
for chain stretch from normal use.
Front handle
The support handle located at or toward the front of the saw intended to be gripped by the left hand.
Guidebar
A railed structure that supports and guides the chain. Sometimes simply called
the “bar”.
Kickback
The rapid backward and/or upward motion of the guidebar, occurring when the
chain near the top area of the nose of the guidebar contacts a foreign object or snags in the workpiece.
Multi-function lever
A device for seing the choke and temporarily advancing the throle in a
partially open position to aid starting, allows the engine to run or causes the engine to stop.
Mud flap
A barrier to protect the operator from cuing debris and other projectiles.
Powerhead
A saw without the chain or guidebar.
Pushback
The rapid backward motion of the guidebar, occurring when the chain on the top straight portion of the
guidebar contacts a foreign object or snags in the workpiece.
Rear handle
The support handle located at or toward the rear of the saw intended to be
gripped by the right hand.
Rear hand guard
A structural barrier at the boom right side of the rear handle to protect the operator in case the chain breaks
or derails.
Side cover
The component on the powerhead that covers the drive sprocket and directs debris away from the operator
during use.
SAFETY LABEL
XXXX = Indicates the saw number
within production series
WW = Week number within the
year
Y = Last Digit of the year the saw
was built
LABELS SHOWN FOR REFERENCE ONLY
OREGON, Oregon Tool Inc.
4909 SE Int.Way Portland
OR 97222 USA
IMPORTANT ENGINE INFORMATION
THIS ENGINE MEETS U.S. EPA EXH REGS
FOR 2015 MY.
EMISSIONS COMPLIANCE PERIOD: 50
HOURS REFER TO OWNER’S MANUAL FOR
MAINTENANCE SPECIFICATIONS AND
ADJUSTMENTS. MADE IN ITALY
MANUFACTURED:
FAMILY: FE8XS.0775CS
ENGINE DISP.: 76.5CC TWC
OREGON 680ESOREGON 680ES
OREGON, OregonTool Inc.
4909 SE Int. Way Portland
OR 97222 USA

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Names & Terms
OREGON 680ES NAMES AND TERMS
Side cover nuts
The components on the side cover that secure the side cover and guidebar.
Throle trigger lock-out
A device that prevents the unintentional operation of the throle trigger until manually released.
Throle trigger
A mechanism that controls engine RPM.
WallWalker®
A device used as a fulcrum to provide mechanical advantage during cuing.
Water shut-o valve
A mechanism that controls water delivery and flow to the guidebar and chain.
Product Identification
PRODUCT IDENTIFICATION
Chain tensioning screw
Front handle
Fuel filler cap
Multi-function lever
Rear handle
Starter handle
Water shut
off valve
Air box intake
Bar slot
Bar stud
Chain catcher
WallWalker®
Guidebar
Mud flap
Powerhead
Rear hand guard
Nameplate label
Side cover
Side cover nuts
Throttle trigger lock-out
Throttle trigger

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INTRODUCTION
The 680ES saw is designed to cut concrete, stone, and masonry when used with the appropriate genuine
OREGON diamond chain. Ductile iron pipe may also be cut but ONLY if using PowerGrit® Utility Saw Chain.
This is a professional tool and is solely intended for use by trained and experienced operators. A first time
operator should obtain practical instruction before using the saw, as well as reading and understanding this
Operator’s Manual.
Local legislation and/or workplace standards may regulate the use of this saw. Determine what regulations are
applicable in the place you work before using the saw.
Prop 65 statement:
California Proposition 65 (the Safe Drinking Water and Toxic Enforcement Act of 1986) refers to the
California legislation that was intended by its authors to protect California citizens and the State’s drinking
water sources from chemicals known to cause cancer, birth defects or other reproductive harm, and to inform
citizens about exposures to such chemicals. Proposition 65 requires businesses to notify Californians about
significant amounts of chemicals in the products they purchase, in their homes or workplaces, or that are
released into the environment. By providing this information, Proposition 65 enables Californians to make
informed decisions about protecting themselves from exposure to these chemicals. Proposition 65 also
prohibits California businesses from knowingly discharging significant amounts of listed chemicals into sources
of drinking water.
The engine exhaust from this machine and some types of dust/debris created from its normal operation may
contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Introduction
SAFETY RULES
To get the maximum benefit from your saw, and assure maximum safety, be sure to read this manual thoroughly and
follow the safety instructions provided.
EXPLANATION OF WARNING LEVELS
IMPORTANT
Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
Indicates a potential situation exists which, if not avoided, may result in damage to your saw or property.
Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
WARNING
CAUTION
DANGER
Safety Rules

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Safety Rules
HANDLING FUEL SAFELY
Check saw for fuel leaks before starting.
Check regularly for leaks from the fuel cap and fuel lines and do not start saw if any leaks are found.
Avoid spilling fuel on yourself or on the saw.
Use only approved containers to transport and store fuel. If fuel is spilled on the saw, wipe up the spillage and
allow the rest to evaporate. If fuel is spilled on yourself or your clothes, immediately remove contaminated
clothing and wash any part of your body that has contacted fuel with soap and warm water.
Fuel vapors are highly flammable.
Turn o the saw, assure that the multi-function lever is set in the “STOP” position, and allow the engine to cool
a few minutes before fueling. Do not smoke or refuel the saw in close proximity to any ignition sources. Move
the saw at least 3 m (10 ft)from the fueling area before restarting it.
WARNING
CAUTION
Safety Rules
WORK AREA SAFETY
Keep children and bystanders away from work area.
Set up a well-marked safety zone with a roped boundary and clear signs to keep bystanders at least 6 m (20 ft)
away.
Remove or control slurry to prevent slippery conditions while cuing.
This saw uses water and can cause slippery surfaces due to the slurry produced and/or freezing temperatures.
Drugs or alcohol can impair vision, dexterity, and judgment.
Do not operate the saw when tired or under the influence of any substance.
Breathing exhaust gases can cause asphyxiation and carbon monoxide poisoning in high concentrations.
Use the saw only in a well-ventilated area.
DANGER
WARNING
CAUTION
Following are the basic instructions to assure work area safety.
PERSONAL SAFETY
Always wear protective clothing.
At a minimum always wear eye protection and/or face shield, hearing protection, long sleeve shirt, long pants,
closed toe shoes with non-slip soles, and gloves. In many work situations, a hard hat and steel toed shoes may
also be required. Avoid loose fiing clothing.
This saw can generate hazardous dust and vapors.
Determine the nature of the material you are going to cut before proceeding with the job. Be especially aware
of cuing materials containing silica and asbestos as inhaling dust can result in respiratory disease. Be sure to use
appropriate respiratory protection designed to filter out microscopic particles. Be sure to use adequate water
pressure.
Over-exposure to vibration can lead to circulatory and/or nerve damage to the extremities, especially in cold
temperatures (Reynaud’s Disease).
If you experience tingling, numbness, pain or changes in skin color, particularly in your fingers, hands or wrists,
stop using the saw immediately. If the problem persists, seek medical aention.
Following are the basic instructions to assure personal safety.
WARNING
Long-term exposure to noise can result in permanent hearing impairment.
Always wear approved hearing protection.
This machine produces an electromagnetic field during operation.
This field may under some circumstances interfere with active or passive medical implants. To reduce the risk of
serious or fatal injury, we recommend persons with medical implants consult their physician and the medical
implant manufacturer before operating this machine.

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Safety Rules
USING THE OREGON SAW SAFELY
Following are the basic instructions to assure safe use of the saw. Also read and understand additional safety
precautions specific to the operation and maintenance of the saw throughout this manual.
DO NOT operate the OREGON saw with a saw chain or saw bar designed to cut wood.
Using wood cuing saw chain on the OREGON saw could result in severe injuries to the operator or a bystander!
Use ONLY the cuing aachments specified in this manual on this saw.
DO NOT operate the saw with damaged, modified, broken, or missing components.
Below safety features are designed to protect against contact with moving parts, ejected debris, broken chain,
thrown water, and concrete slurry.
• Side cover
• Mud flap
• Mud flap bracket (Chain Catcher)
• Rear hand guard
• Throle trigger interlock
Use only Genuine OREGON replacement parts. Use of unauthorized aftermarket parts may result in injury or
damage to the saw.
DO NOT insert the guidebar into a slot narrower than the width of the chain.
Rapid pushback, kickback and/or chain breakage could result.
DO NOT operate the saw without an adequate water supply.
The integral water supply channels in the guidebar act to cool and lubricate the cuing system as well as to
suppress dust and debris generated during cuing. Assure that the water supply is capable of delivering 1.5 bar
(20 psi) pressure to the saw at a minimum flow rate of 4 lpm (1 gpm).
WARNING
DANGER
Never aempt to cut ductile iron pipe or similar pipe materials with the saw unless using PowerGrit® Utility
Saw Chain.
Using concrete saw chain in these applications can cause the chain to snag abruptly in the cut which may result
in chain breakage, pushback and/or kickback.
BOX CONTENTS
Minimum contents for all packages shown. Some packages also contain guidebar and diamond chain.
See page 44 for listing of compatible guidebars and diamond chain.
Unpacking & Assembly
GUIDEBAR AND DIAMOND CHAIN
INSTALLATION & TENSIONING
Following are the basic instructions for guidebar and diamond chain installation and tensioning.
Never perform any maintenance or adjustments on the saw while the engine is running.
Be sure the multi-function lever is set to the “STOP” position before proceeding.
Improper chain tension can lead to failure of the chain or derailing of the chain o of the guidebar.
Check tension frequently and adjust if drive links of chain hang 18 mm (3/4 in) or more below the guidebar groove
Always wear gloves when handling the bar and chain.
These components can develop sharp edges and cause cuts.
WARNING
CAUTION

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GUIDEBAR AND DIAMOND CHAIN INSTALLATION & TENSIONING
Unpacking & Assembly Unpacking & Assembly
GUIDEBAR AND DIAMOND CHAIN INSTALLATION & TENSIONING
STEP 1
Loosen side cover nuts and remove side cover.
STEP 2
Remove shipping spacer.
STEP 4
Mount the diamond chain on the guidebar starting at the drive sprocket
and continue over the guidebar nose.
STEP 3
Place guidebar onto studs and tensioning adjustment pin.

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GUIDEBAR AND DIAMOND CHAIN INSTALLATION & TENSIONING
Unpacking & Assembly Unpacking & Assembly
GUIDEBAR AND DIAMOND CHAIN INSTALLATION & TENSIONING
CHAIN TOO TIGHT CHAIN TOO LOOSE
STEP 5
Install the side cover and nuts. Do not fully tighten side cover nuts until
chain is properly tensioned.
STEP 6
Make sure all the drive links are inside the guidebar groove then lift the bar
nose and tension the chain by turning the tensioning screw clockwise.
STEP 7
Check for proper tension by pulling the chain around the bar by hand. If you cannot easily pull by hand,
the chain is too tight and needs to be loosened slightly.
CAUTION: Be aware that the guidebar rails may develop sharp edges over time so always pull the
diamond chain by the diamond segments.
STEP 8
Continue to lift up on the nose of the guidebar and firmly tighten the side cover nuts.
NOTE: To prevent chain tensioner breakage, be sure the side cover nuts are tightened to approximately
27 Nm (20 ft-lbs).

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CHECKING & ADJUSTING CHAIN TENSION
Unpacking & Assembly
All chains have a tendency to stretch when used. Diamond chains stretch more than wood cuing chains
because of the abrasive materials they are cuing.
Assure that proper chain tension is maintained.
If tension is set too tight, it will lead to excessive chain stretch, and most of the saw’s power will be used just to
overcome friction. In severe cases the chain may not turn at all, and can lead to chain breakage. If the tension is
set too loose, the chain could be thrown o of the bar, or allow the sprocket to turn without turning the chain,
which will damage the drive links.
When a chain stretches to a point where the drive links are hanging approximately 12 mm (1/2 in) to 18 mm
(3/4 in) below the guidebar groove, it is time to tension the chain.
IMPORTANT
WARNING
CAUTION
Improper chain tension can lead to failure of the chain or derailing of the chain o of the guidebar.
Check chain tension frequently and adjust if drive links of chain hang 18 mm (3/4 in) or more below the
guidebar.
Unpacking & Assembly
CONNECT TO WATER SUPPLY
Following are the basic instructions to assure correct water supply to the saw.
OREGON® diamond saws require a continuous water supply to the guidebar and chain.
A key purpose of the supply water is dust suppression. The potential for airborne particulates depends on many
factors including, but not limited to, the material being cut, application and cuing environment. In all cases, assure
that the water supply is capable of delivering 1.5 bar (20 psi) pressure to the saw at a minimum flow rate of 4 lpm
(1gpm).
NOTE: Local and/or regional regulation can vary widely. It is the responsibility of the operator to wear appropriate
dust protection applicable in their area and suitable to the application.
Never operate saw with insucient water supply.
Insucient water supply will result in excessive wear to the chain, which can lead to excessive stretch, chain
breakage and/or damage to the guidebar nose sprocket.
Aach to water supply capable of delivering 1.5 bar (20 psi) pressure
to the saw at a minimum flow rate of 4 lpm (1 gpm). The single most
important factor an operator can control to increase chain life is to use
adequate water pressure.
WARNING

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FUELING
Fueling
Fuel vapors are highly flammable.
Turn o the saw, assure that the multi-function lever is set in the “STOP” position, and allow the engine to cool
a few minutes before fueling. Do not smoke or refuel the saw in close proximity to any ignition sources. Move
the saw at least 3 m (10 ft) from the fueling area before restarting it.
This saw is certified to be in conformance with Section 213 of the Clean Air Act by the US EPA.
Failure to follow instructions on preparing the fuel and oil mixture may result in
emissions violations.
IMPORTANT
DANGER
Following are the basic instructions to assure safe fueling procedures.
FUEL
OREGON saws require the use of high quality, 90 Octane (95 RON) or higher fuel combined with OREGON
2-stroke oil (or other high quality 2-stroke oil) specifically formulated for aircooled power equipment at a
mixture of 2% (50:1). Due to the heavy duty cycle OREGON saws are subjected to in concrete cuing
applications, oil mixture and fuel quality are critical to the performance and life of the engine.
ALKYLATE FUELS
Alkylate fuel (i.e. Aspen 4) is an acceptable alternative to conventional fuel when combined with OREGON
2-stroke oil (or other high quality 2-stroke oil) at a mixture of 2% (50:1).
NOTE: If using Aspen alkylate fuel or similar, carburetor adjustments are not necessary or recommended.
ETHANOL BLENDED FUEL
While OREGON recommends using fuel that does not contain ethanol (alcohol), it is understood that 10%
Ethanol blended fuel (E10) is becoming more widespread. OREGON saws are not designed to operate with
fuel containing more than 10% ethanol.
NOTE: The use of Ethanol blended fuel greater than E10 will cause improper operation and will cause major
engine failure. This type of fuel related failure is not covered under warranty.
Fueling
FUEL MIXING INSTRUCTIONS
Pressure can build up in the fuel tank and container and possibly cause sudden release of fuel vapors when the
tank is opened.
Open the fuel cap slowly and always provide adequate ventilation when handling fuel.
It is important to accurately measure the amount of oil to be mixed with gasoline to assure that the correct mixture
is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically aect the ratio of the
mixture.
Always mix gasoline and oil in a clean container approved for use with fuel. Keep fuel container closed tightly to
prevent moisture from geing into the fuel. Do not mix more than one month’s supply of fuel. This helps prevent
the separation of the 2-stroke oil from the gasoline (varnishing).
Before fueling, clean the area around fuel cap on the saw to prevent dirt from contaminating the fuel.
Contamination of the fuel tank can lead to saw malfunction.
Always begin mixing fuel by pouring half the amount of gasoline to be prepared into the mixing container. Then
add the correct amount of 2-stroke oil for 2% (50:1) mixture and finish by adding gasoline to obtain the total
quantity of mixed fuel. Shake the fuel container to thoroughly mix the gasoline and oil before adding to the saw.
The table below shows the correct quantity of two-cycle oil to be used.
FUEL MIXTURE: 2% (50:1) mixture gasoline/oil.
GASOLINE OIL
US Gallon US Fl oz
1 2.6
2 1/2 6.4
5 12.8
GASOLINE OIL
Liters ml
1 20
5 100
10 200
20 400
NOTE: If the saw is not used for an extended period of time (3 months) the fuel tank should be emptied and cleaned.
CAUTION
IMPORTANT

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FUELING THE SAW
Fueling
Do not overfill the fuel tank.
Should any fuel spill happen, wipe up the spillage and allow the rest to evaporate.
If fuel is spilled on yourself or your clothes, immediately remove contaminated clothing and wash any part of
your body that has contacted fuel with soap and warm water.
Pressure can build up in the fuel tank and container and possibly cause sudden release of fuel vapors when
the tank is opened.
Open the fuel cap slowly and always provide adequate ventilation when handling fuel.
After adding fuel, carefully install the fuel cap and tighten firmly by hand. Tip the saw slightly to one side and
check for leaks. Should any fuel leaks be observed, do not start the saw.
Customers are encouraged to remain consistent in the fuel option they choose for OREGON saws. Alternat-
ing between options, such as going between traditional fuel to Alkylate fuel (Aspen) and back again may have
negative impacts on the engine.
CAUTION
Operation
OPERATION
Never start the saw without the bar, chain and side cover properly assembled.
DO NOT operate the saw with loose, missing, damaged or improperly installed or repaired parts.
Check that the components shown below are intact, undamaged, and installed correctly:
• Side cover nuts torqued down properly
• Side cover not damaged and discharge port not plugged
• Handles not loose, gripping area is clean and undamaged
• Mud flap is not ripped, torn or missing and fully aached to the saw
• Cylinder cover is properly secured in place
• Muer not damaged and is adequately secured to cylinder
• Guidebar not bent or otherwise damaged such as rails dished and uneven
• Nose sprocket not excessively worn or broken, and turns freely
• Diamond chain does not have loose rivets, chassis damage, or missing diamond segments
• Chain tensioner mechanism functions properly and pin is not bent or broken
• Drive sprocket not excessively worn and slides easily on adapter
• Check alignment of drive sprocket and guidebar
Following are the basic instructions to assure safe operation of the saw.
WARNING

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PRE-OPERATION SAFETY CHECKS
Operation
Perform the following safety checks each day to be sure that the safety features designed into the saw are
functioning properly. If any items are excessively worn or damaged, replace before use.
• With the multi-function lever set to the “STOP” position, without starting saw, pull starter rope slowly and
inspect for fraying, wear and abrasion.
• Assure vibration isolators are intact.
• With engine running and without depressing thole trigger lockout, pull throle trigger and assure
continuous chain movement does not occur.
• Verify at engine idle speed that the chain does not move.
Operation
STARTING & STOPPING THE SAW
Failure to break-in an engine may result in piston seizure.
It is very important to break-in a new engine to “seat” all moving parts, especially the piston rings. To
break-in the engine, run one full tank of 2% (50:1) fuel at idle, cycling the throle every 5 to 10 minutes to
prevent loading.
Do not obstruct air intake.
Loose clothing can inadvertently be drawn into air intake and obstruct air flow which may result in engine stall.
Be sure that no part of the cuing system is contacting a solid object when starting the saw.
When the multifunction lever is set to the choke and/or throle advance position for starting, the chain may
move and cause the saw to react if the chain contacts a solid object.
Move the saw at least 3 m (10 ft) from the fueling area before starting it.
Assure that secure footing is established and chain is not contacting any objects.
When starting the saw, place the saw on clear and level ground.
IMPORTANT
WARNING
CAUTION
STOPPING THE SAW
To turn the engine o, push the multi-function lever down until engine stops. The multi-function lever will then
remain in the “STOP” position and prevent starting. Close water valve completely.

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COLD ENGINE STARTING PROCEDURE
Operation
1. Move the multi-function lever to the upper-most position which also sets the choke and throle advance.
2. Open the water valve 1/4 turn.
3. Place foot on base of rear handle, and place one hand of front handle.
4. With opposite hand, slowly pull starter handle until you feel the starter pawls engage.
5. Pull the starter cord (hard, fast, short pulls) until engine initially fires or “pops”. Do not exceed 5 pulls in
this step.
6. Move the multi-function lever to the middle position, which releases the choke but keeps the throle in
the advance position.
7. Pull the starter cord until the engine starts – should be 1 to 2 pulls.
8. Release the throle advance by pulling and releasing the throle trigger, which allows engine to return to
normal idle speed.
9. Allow the engine to idle briefly, then pull throle trigger several times to help warm up the engine.
10. Open the water valve completely.
Operation
WARM ENGINE STARTING PROCEDURE
1. Move the multi-function lever to the middle position. If the multi-function lever is in the upper-most position
on a warm engine, the carburetor will flood with gas. If this occurs, see troubleshooting section .
2. Open the water valve 1/4 turn.
3. Place foot on base of rear handle, and place one hand of front handle.
4. With opposite hand, slowly pull starter handle until you feel the starter pawls engage.
5. Pull the starter cord (hard, fast, short pulls) until engine starts .
6. Allow the engine to idle briefly, then pull throle trigger several times to help warm up the engine.
7. Open the water valve completely.

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PRECUT CHECKLIST
Operation
Sudden contact of the guidebar nose with a foreign object may generate kickback.
Remove and/or avoid any obstructions (plumbing, water supply hoses, electrical conduit, air ducts, etc.) that
may interfere with the cut.
Always operate the saw with solid footing and both hands on the saw.
Keep your left hand on the front handle and your right hand on the rear handle. Wrap your thumbs around the
handles to assure you maintain a secure grip on both handles.
To avoid electrocution, check for live electrical wires.
Wires may be hidden within or behind walls and/or laying around the workspace. Assure that any ancillary
electrical equipment (fans, pumps, vacuums, etc.) are properly grounded and certified for use in the intended
environment.
Always wear protective clothing.
At a minimum always wear eye protection and/or face shield, hearing protection, long sleeve shirt, long pants,
closed toe shoes with non-slip soles, and gloves. In many work situations, a hard hat, steel toed shoes and a
respirator may also be required. Avoid loose fiing clothing.
WARNING
Operation
CUING WITH THE SAW
DO NOT insert the guidebar into a slot narrower than the width of the chain.
Rapid pushback, kickback and/or chain breakage could result.
Slippery or unstable surfaces such as ladders may cause a loss of balance or control of the saw.
Always keep proper footing and operate the saw only when standing on fixed, secure and level surface.
Unexpected loss of control of the saw and loss of balance can result in injury.
Do not overreach and do not cut above shoulder height.
IMPORTANT
WARNING
CAUTION
Do not allow workpiece to pinch the guidebar and chain, or rapid pushback could result.
Always cut boom of opening first and assure workpiece is secure and does not shift during cuing operations.
Do not operate saw upside down.
Cuing debris can be directed back towards the operator.
Always operate saw at full throle.
For best results, always operate the saw at full power.
Take special precautions when cuing in horizontal orientation.
Be aware that debris may be ejected dierently than when cuing in a vertical position.
Never operate the saw during severe inclement weather.
Freezing conditions, lightning, sudden downpours can create hazardous jobsite conditions.
Be sure cut concrete cannot fall and injure the operator or bystanders.
Assure cut piece is controlled and does not fall unexpectedly.
NOTE: Concrete is very heavy; one cubic foot = 30 cm x 30 cm x 30 cm = 68 kg (12 in x 12 in x 12 in = 150 lbs).
Cuing with the saw may generate sparks, especially when cuing through metal (such as rebar), and may
start a fire in combustible materials such as dry grass, wood and fuel.
Be sure to use adequate water pressure and have fire fighting equipment readily available.

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ENGLISH
Operation
To assure the best performance from your OREGON saw, follow all safety precautions and recommended
techniques. Additional helpful information can be obtained at www.oregonconstruction.com.
CUING WITH THE SAW
CONCRETE/MASONRY CUING
Planning the Cut
1. Select the proper chain type for the material being cut. Refer to the chain selection guide in this manual.
See page 44.
2. Outline the cut with a permanent marker for a visual cuing guide.
3. Avoid pinching the guidebar and chain by using shims or other anchoring devices to stabilize the
workpiece. Always plan to cut the boom of an opening first, then
top or sides. Save the easiest cut for last. (See image at right)
4. Be sure cut concrete cannot fall and injure the operator
or bystanders. As the cut is being completed, assure that
appropriate bracing is in place to control the cut section
of the workpiece. Concrete is very heavy,
one cubic foot = 30 cm x 30 cm x 30 cm = 68 kg (12 in x 12 in x 12 in = 150 lbs)
Operation
CONCRETE/MASONRY CUING
Recommended Concrete Cuing Techniques
2. Cut down to open slot
5. Reengage WallWalker® and repeat Steps 3 and 4
3. Insert WallWalker® rotate rear handle up
4. Pull saw out, rotate rear handle down, press boom of saw
to leading edge of cut and rotate rear handle up
1. Plunge in
22
1
3

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ENGLISH
PIPE CUING USING
POWERGRIT® UTILITY SAW CHAIN
To assure the best performance from your OREGON® saw when cuing ductile iron pipe
or similar pipe materials, follow all safety precautions and recommended cuing techniques.
Always assure trench walls are adequately supported before entering work space.
Consult applicable regional regulations and obtain necessary approvals before entering a trench or any excavated
areas.
Never aempt to cut ductile iron pipe or similar pipe materials with the saw
unless using PowerGrit® Utility Saw Chain.
Using concrete diamond saw chain in these applications can cause the chain to snag abruptly in the cut which may
result in chain breakage, pushback and/or kickback.
Always assure that pipe is properly evacuated before cuing.
Pipes may contain sewage, gas or other hazardous materials.
Always support the pipe on both sides of the cut to assure the cut remains open throughout the cuing
operation, including when the cut is finished.
An improperly supported pipe can cause the cut to close, pinching the chain and guidebar which may result in
chain breakage, pushback and/or kickback.
Operation
CUING TIPS
• For the straightest cuts use the “Step Cut” method:
• First score the entire cut line approximately a half-inch deep using the nose of the guidebar.
• Next, deepen the cut by about two inches
• Then plunge all the way through and complete the cut using the WallWalker® as a pivot point and
pull on the rear handle to rotate the bar into the cut.
• Always operate the concrete saw at full throle. If too much force is applied, the saw will lug or stall. The
chain will not have enough speed to cut eectively. If too lile feed force is applied, the diamonds will skid
and glaze over.
• Plunge cut instead of starting at the top surface of the wall. This will reduce chaer, extend diamond life,
create a straighter cut and more quickly enable the use of the WallWalker.
• When cuing heavy rebar, slowly “rock” the saw so that you’re always cuing concrete as well as steel. This
will help keep the diamonds exposed. Also, expect less chain life when cuing heavy rebar.
• Expect more chain stretch when making nose-buried cuts for extended
• periods of time, as the chain does not have a chance to “throw” the slurry away from the nose of the
guidebar.
• If the saw begins to cut consistently crooked, stop the saw, remove the bar and chain and turn the bar over
and use the other side. Dress worn rails with a belt sander.
Note: The normal life of a guidebar is two to three diamond chains. Heavy rebar can shorten guidebar life.
• The guidebar is solely a guide track for the chain. Never use the guidebar to lift, twist or pry concrete
material
• When using a new chain, you can increase the initial cuing speed by “opening up the diamonds”. This
can be accomplished by first making a few cuts in an abrasive material such as a cinder block or brick.
WARNING
1. Make a small plunge cut into the lower quadrant of the pipe
to relieve internal pressure and allow contents to drain from
pipe in a controlled manner.
2. With pipe drained, cut from the top of pipe and
continue through boom of the pipe.
4. To assist with cuing, engage the WallWalker®
in the cut when possible to provide additional leverage and
alternate cuing between the near and far side walls of the
pipe.
3. To assure straightness of cut, guidebar should
extend completely through the pipe during the cut.
Recommended Pipe Cuing Techniques
Operation

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Transporting & Storing
MAINTENANCE
AFTER EACH USE
1. After cuing, pull trigger to spin the chain for at least 15 seconds with the water on to flush slurry and debris
from chain, guidebar and drive sprocket.
2. Stop saw and wash concrete slurry from saw assembly with special aention to the starter housing and
flywheel. Do not let slurry dry on saw as it will be very dicult to remove later.
3. Avoid geing any water in the carburetor or exhaust system. If water enters the exhaust port, it can enter
the carburetor. To make sure there is no water in the exhaust system, assure the multi-function lever is set to
“STOP” position, point the guidebar tip down and pull the starter handle several times to expel water from
muer.
4. Remove the chain and guidebar. Flush out the chain tensioner and side cover with water. Lubricate tensioner
with waterproof grease.
5. After cleaning the saw, spray the entire saw body, chain, guidebar, and drive sprocket with lightweight oil.
Using lightweight oil on the saw will minimize rust and help reduce slurry build up.
6. Inspect and tighten all fasteners as necessary.
7. Inspect drive sprocket for wear. Replace if tooth tips are pointed, or if groove cuts through top of tooth.
8. Check clutch cup needle bearing for wear. Assure clutch cup spins freely and without excessive play.
9. Check starter cord for wear or damage. Replace as necessary.
10. Inspect air filter. Replace filter if dirty or wet.
11. Spray lightweight oil into the air intake slots on the starter housing and flywheel (this will prevent the starter
pawls from sticking).
IMPORTANT
AFTER EVERY 10 HOURS OF USE
1. Remove the starter cover and clean the flywheel fins and the starter pawls with a wire brush, then apply
waterproof grease to the starter pawls.
2. Remove the spark plug and clean with a wire brush. Check the electrode gap. The correct gap is 0.5 mm
(0.020 in). Replace if necessary.
Maintenance
AFTER EVERY 40 HOURS OF USE
1. Change the spark plug. Adjust the electrode to 0.5 mm (0.020 in).
2. Check the fuel filter located inside the fuel tank. Clean or replace if clogged.
TRANSPORTING & STORING
Always carry the saw by the front handle with the multi-function lever set to the “STOP” position and
away from your body
When transporting the saw, assure it is secured to avoid damage and/or personal injury. Proper handling of
the saw will reduce the likelihood of accidental contact with the guidebar and chain.
CAUTION
OREGON recommends mixing fuel in small batches, to be used within 30 days. Fuel stabilizers (additives)
can prolong the life of the fuel, but still should not be stored longer than 90 days.
WARNING
Fuel and vapors are highly flammable
When transporting or storing fuel, always use a container approved for fuel and assure it is sealed against
leaks and/or escaping fumes. Contact with an ignition source could cause fire or explosion.
IMPORTANT

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ENGLISH
Maintenance
AIR FILTER
The polyester air filter must be kept clean for the engine to operate properly. If the saw is not reaching
full RPM, most likely the air filter is dirty or wet.
• The air filter should be free of holes and white in color
• Replace the air filter when dirty or wet.
• When replacing the air filter, clean the area inside the
air box with a clean towel prior to installing new filter
• Inspect air box seal for wear or damage. Replace
if damaged.
FUEL SYSTEM
• Clean area around fuel cap before removing.
• Check the fuel cap and seal for damage.
• Check the fuel line for damage.
• Check fuel filter, assure it is free of debris.
• Replace fuel filter if it is stained dark or clogged (fuel filter cannot be
cleaned).
After each use After every 10 hours After every 40 hours
External Cleaning Clean Starter Housing Replace Spark Plug
Fasteners/Screws Check Spark Plug Check Fuel Filter
Air Intake
Functional Inspection Functional Inspection Functional Inspection
General Inspection Vibration Isolators Fuel System
Throle Trigger Lockout Muer Fuel Filter
Multi-function Lever Carburetor Air Filter
Mud Flap Starter Housing Clutch Cup
Guidebar and Chain Sprocket Clutch
Maintenance
CARBURETOR
• The function of the carburetor is to mix fuel with air. Adjustments other than idle speed should only
be made by an authorized service center.
• Before adjusting the engine idle speed, make
sure the air filter is clean, the engine is running, warmed up and the guidebar
and chain are
assembled on the saw.
• Adjust idle screw so that the engine idles smoothly but the clutch does not
engage. If the chain begins
to spin, turn the idle screw counter-clockwise until the chain stops.
• If saw has been running satisfactorily and there is a gradual decrease in
power and drop in RPM at full throle, the filter may have become dirty or
wet. (See air filter section).
SPARK PLUG
• Clean the spark plug with a wire brush and check to assure the plug gap is 0.5 mm (0.020 in).
• Inspect the spark plug boot, replace if needed.
• Inspect lead wire for wear or damage. Replace if necessary (lead wire cannot be replaced separately from
ignition module).
• Replace spark plug after 40 hours of use, or if the electrode is corroded or eroded.
• Always use a recommended spark plug (resistor type) to prevent damage to the piston and cylinder.
(NGK #BPMR8A or Champion RCJ7Y or equivalent).
IMPORTANT
STARTER RECOIL HOUSING
It is common for concrete slurry to get inside the starter housing
assembly during cuing. This can cause starter pawls to stick and not
engage when the rope is pulled.
• After each usage, thoroughly flush the starter housing assembly
with water.
• Spray lightweight oil into the air intake slots on the starter housing
and flywheel (this will prevent the starter pawls from sticking).
• Inspect the starter cord for fraying, replace if necessary.
Carburetor idle screw