GZ3500T
848-CE2-93A0 (809)
U
U
S
S
OWNER/OPERATOR MANUAL
CHAINSAW
GZ3500T
F
R
E
S
WARNING
The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
APPLICABLE SERIAL NUMBERS :
WARNING
Before using our
product, please read this
manual carefully to
understand the proper use
of your unit.
800001 and up
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GZ3500T
SAFETY FIRST
Instructions contained in warnings within this manual marked with a symbol concern critical points which must be
taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all
such instructions carefully and follow them without fail.
WARNINGS IN THE MANUAL
WARNING
This mark indicates instructions, which must be followed in order to prevent accidents, which could lead to serious
bodily injury or death.
IMPORTANT
This mark indicates instructions, which must be followed, or it leads to mechanical failure, breakdown, or damage.
NOTE
This mark indicates hints or directions useful in the use of the product.
SYMBOLS IN THE OPERATOR’S MANUAL
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Read operator's instruction
book before operating this
machine.
Use the chain saw
with two hands.
Read, understand and
follow all warnings.
Never touch hot surface.
Wear head, eye and ear
protection.
Warning! Danger of
kickback.
Use appropriate protections
for foot-leg and hand-arm.
This saw is for trained tree
service operators only.
Contents
1. Parts location ............................................................................ 3
2. Specifications ........................................................................... 3
3. For safe operation..................................................................... 4
4. Symbols on the machine .......................................................... 7
5. Installing guide bar and saw chain .......................................... 8
6. Fuel and chain oil ..................................................................... 9
7. Operation ................................................................................ 11
8. Sawing .................................................................................... 12
9. Maintenance ........................................................................... 14
10. Maintenance of saw chain and guide bar .............................. 15
11. Troubleshooting guide ............................................................ 16
12. Disposal .................................................................................. 16
1. Parts location
(13)
(12)
(10)
(11)
(1)
(7)
(5)
(6)
(2)
(3)
(9)
1. Front guard
2. Starter knob
3. Air cleaner cover
4. Choke knob
5. Throttle interlock
6. Right handle
7. Throttle lever
8. Engine switch
9. Fuel tank
10. Oil tank
11. Left handle
12. Saw chain
13. Guide bar
14. Priming bulb
(8)
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2. Specifications
■ GZ3500T
Power unit :
Displacement·············································································································· 2.15(35.2) cu-in(cm
Fuel··································································································· Mixture(Gasoline 50 : Two-cycle oil 1)
································································································· (when using RedMax/ZENOAH genuine oil)
Fuel tank capacity ············································································································ 8.5(0.25) fl.oz(
Chain oil·················································································································· Motor oil SAE #10W-30
Oil tank capacity ············································································································· 5.70(0.17) fl.oz(
Carburetor ····································································································· Diaphragm type (Walbro WT)
lgnition system··································································································································· Digital
Spark plug ······························································································································ NGK CMR7H
Oil feeding system ··········································································································· Mechanical pump
Power·························································································································· 1.45/10,000 (kw/rpm)
Max speed ································································································································12,500 (rpm)
Idle speed ···································································································································2,900 (rpm)
Sprocket : Pitch – No. of teeth ······················································································ 3/8in(9.53mm) – 6T
Dimensions : L – W – H ····································································· 11.9(297)x9.2(235)x9.0(230) in(mm)
Dry weight : Power unit only ································································································ 7.3(3.3) lbs(kg)
Cutting attachment :
Guide bar : Type – Size···································································· Sprocket nose – 12(30), 14(35) in(cm)
Saw chain : Type – Pitch – Gauge ···································· Oregon 91VG – 3/8(9.53) – 0.050(1.27) in(mm)
(4)
(14)
3
)
)
)
Specifications are subject to change without notice.
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GZ3500T
3. For safe operation
WARNING
• This chainsaw has been especially designed for tree
maintenance and should therefore only be used by
trained operators when working up in the trees.
• Under no circumstances may the design of the machine be modified without the permission of the manufacturer. Always use genuine accessories. Non-authorized modifications and/or accessories can result in
serious personal injury or the death of the operator or
others.
•A chain saw is a dangerous tool if used carelessly or
incorrectly and can cause serious, even fatal injuries.
It is very important that you read and understand the
contents of this operator’s manual.
7. All chain saw service, other than the
items listed in the Owner’s Manual,
should be performed by competent
chain saw service personnel. (E.g.,
if improper tools are used to remove
the flywheel, or if an improper tool is
used to hold the flywheel in order to
remove the clutch, structural damage
to the flywheel could occur which
could subsequently cause the flywheel to disintegrate.)
8. Always shut off the engine before
setting it down.
■ BASIC SAFETY RULES
1. Never operate a chain saw when you
are fatigued, ill, or upset, or under the
influence of medication that may
make you drowsy, or if you are under
the influence of alcohol or drugs.
2. Use safety footwear, snug fitting
clothing and eye, hearing and head
protection devices.
Use vibration reducing gloves.
Most chain saw accidents happen
when the chain touches the operator.
Personal protective equipment cannot eliminate the risk of injury but it
will reduce the degree of injury.
3. Do not allow other person to be near
the chain saw when starting or cutting. Keep bystanders and animals
out of the work area. Children, pets
and bystanders should be a minimum
of 10 m away when you start or operate the chain saw.
9. Never cut in high wind, bad weather,
when visibility is poor or in very high
or low temperatures.
10. Operate the chain saw only in well
ventilated areas. Never start or run
the engine inside a closed room or
building and potentially explosive atmosphere. Exhaust fumes contain
dangerous carbon monoxide.
11. Never touch the cover, guide bar, saw
chain or nut with bare hands while
the engine is in operation or immediately after shutting down the engine.
Doing so could result in serious burns
(2)
because of high temperature.
(1) guide bar
(2) saw chain
(3)
(1)
(3) guide bar securing nut
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4. Never start cutting until you have a
clear work area, secure footing, and
a planned retreat path from the falling tree.
5. Always hold the chain saw firmly with
both hands when the chain saw is
running. Use a firm grip with thumb
and fingers encircling the chain saw
handles.
6. Keep all parts of your body away from
the saw chain when the engine is running.
GZ3500T
■ BEFORE USE
1. Keep the saw chain sharp and the
anti-vibration system, well maintained. A dull chain will increase cutting time, and pressing a dull chain
through wood will increase the vibrations transmitted to your hands. A
saw with loose components or with
damaged or worn AV buffers will also
tend to have higher vibration levels.
2. Before you start the engine, make
sure the saw chain is not contacting
anything.
3. Always inspect the chain saw before
each use for worn, Ioose, or damaged parts. Never operate a chain
saw that is damaged, improperly adjusted, or is not completely and securely assembled. Be sure that the
saw chain stops moving when the
throttle control trigger is released.
■ CUTTING
1. Use extreme caution when cutting
small size brush and saplings because slender material may catch the
saw chain and be whipped toward
you or pull you off balance.
2. When cutting a limb that is under tension, be alert for spring- back so that
you will not be struck when the tension in the wood fibers is released.
3. Always check the tree for dead
branches which could fall during the
felling operation.
4. Do not operate the chain saw in a tree
unless specially trained to do so.
5. Never use a chain saw by holding it
with one hand. A chain saw is not safe
if controlled with one hand; you can
cut yourself. Always have a secure,
firm grip around the handles with both
hands.
■ FUEL SAFETY
1. Always use caution when handling
fuel. Wipe up all spills and then move
the chain saw at least 10 ft(3 m) from
the fueling point before starting the
engine.
2. Eliminate all sources of sparks or
flame (i.e. smoking, open flames, or
work that can cause sparks) in the
areas where fuel is mixed, poured,
or stored.
3. Do not smoke while handling fuel or
while operating the chain saw.
4. Keep the handles dry, clean and free
of oil or fuel mixture.
5. Always store fuel in an approved container designed for that purpose.
■ STORAGE
1. Always store the chain saw and fuel
so that there is no risk of leakages or
fumes coming into contact with
sparks or naked flames from electrical equipment, electric motors, relays/switches, boilers and the like.
2. For longer periods of storage or for
transport of the chain saw, the fuel
and chain oil tanks should be emptied.
3. When the chain saw is in storage
make sure the appropriate guide bar
scabbard is in place in order to prevent accidental contact with the
sharp chain. Even a non-moving
chain can cause serious cuts to yourself or persons you bump into with
an exposed chain.
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■ TRANSPORT
1. Always carry the chain saw with the
engine stopped, the guide bar and
saw chain to the rear, and the muffler
away from your body.
2. When transporting your chain saw,
make sure the appropriate guide bar
scabbard is in place.
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GZ3500T
KICKBACK SAFETY PRECAUTIONS
FOR CHAIN SAW USERS
WARNING
• Kickback may occur when the nose
or tip of the guide bar touches an
object, or when the wood closes in
and pinches the saw chain in the cut.
Tip contact in some cases may cause
a lightning fast reverse reaction, kicking the guide bar up and back towards the operator. Pinching the saw
chain along the top of the guide bar
may push the guide bar rapidly back
towards the operator. Either of these
reactions may cause you to Iose control of the saw, which could result in
serious personal injury.
• Do not rely exclusively on the safety
devices built into your saw. As a chain
saw user you should take several
steps to keep cutting jobs free from
accident or injury.
(1) With a basic understanding of kick-
back you can reduce or eliminate the
element of surprise. Sudden surprise
contributes to accidents.
(2) Keep a good grip on the saw with
both hands, the right hand on the rear
handle, and the left hand on the front
handle, when the engine is running.
Use a firm grip with thumbs and fingers encircling the chain saw
handles. A firm grip will help you reduce kickback and maintain control
of the saw.
(3) Make certain that the area in which
you are cutting is free from obstructions. Do not let the nose of the guide
bar contact a log, branch, or any
other obstruction which could be hit
while you are operating the saw.
(4) Cut at high engine speeds. (full
throttle)
(5) Do not overreach or cut above shoul-
der height.
(6) If you have to cut branches or the like
that are above shoulder height, a
working platform or scaffold is recommended.
(7) Follow the manufacturer’s sharpening
and maintenance instructions for the
saw chain.
(8) Only use replacement bars and
chains specified by the manufacturer.
FOR PROTECTING YOUR BODY FROM VIBRATION
If you continue to use high-vibration tools these
symptoms will probably get worse, for example:
• The numbness in your hands could become permanent and you won’t be able to feel things at all;
•You will have difficulty picking up small objects such
as screws or nails;
• The white finger syndrome could occur more frequently and affect more of your fingers.
Please observe the following, in order to protect the
health of your body.
1. Always use the right tool for each job (to do the job
more quickly and expose you to less hand-arm vibration).
2. Check tools before using them to make sure they
have been properly maintained and repaired to avoid
increased vibration caused by faults or general wear.
3. Make sure cutting tools are kept sharp so that they
remain efficient.
4. Reduce the amount of time you use a tool at one
time, by doing other jobs in between.
5. Avoid gripping or forcing a tool or workpiece more
than you have to.
6. Store tools so that they do not have very cold handles
when used.
7. Encourage good blood circulation by:
• keeping warm and dry (when necessary, wear
gloves, a hat, waterproofs and use heating pads if
available);
• give up or cut down on smoking because smoking
reduces blood flow; massage and exercise your fingers to increase blood circulation.
DISPOSAL
When disposing of your machine, fuel or oil in the
machine, be sure to follow your local regulations.
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4. Symbols on the Machine
WARNING
For safe operation and maintenance, symbols are carved or placed on the machine.
According to these indications, please be careful not to make any mistake.
The port to refuel “MIX GASOLINE”
Position: Recoil case (in front of the fuel cap)
The port to fill chain oil
Position: Recoil case (under the oil cap)
Setting the switch to the “O” position, stops the engine immediately.
Position: Right side of the rear handle
Starting the engine. If you turn the choke knob to the point of the arrow,
you can set the starting mode as follows:
Position: Upper-right of the air cleaner cover
GZ3500T
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The screw under the “H” stamp is The High-speed fuel mixture adjustment screw.
The screw under the “L” stamp is The Slow-speed fuel mixture adjustment screw.
The screw at the left of the “T” stamp is the Idle speed adjustment screw.
Position: Left side of the rear handle
Shows the directions that the chain brake is released (white arrow) and
brake is activated (black arrow).
Position: Front of the chain cover
If you turn the rod with screwdriver follow the arrow to the "
" position,
the chain oil flows more, and if you turn to the " " position, oil flow is
less. (Standard width: 90°)
Position: Bottom of the power unit
■ EMISSION CONTROL
An emission control label is located on the engine.
IMPORTANT EMISSIONS INFORMATION
THIS ENGINE MEETS TO 2008*1 U.S. EPA AND 2008*
CALIFORNIA EXH AND EVP EMISSION REGULATIONS
FOR SI SORE's. COMPLIANCE PERIOD : CATEGORY A
ENGINE FAMILY : 8HQZS.0354BT*2 DISPL.: 35 cc
EMISSION CONTROL SYSTEM : EXH;EM
REFER TO OWNER'S MANUAL FOR MAINTENANCE, SPECIFICATIONS AND ADJUSTMENTS.
MANUFACTURED:
USE JASO FD OR ISO L-EGD GRADE 50:1 OIL.
1
*1: The year will be changed every year of manufacturing.
*2: The initial number will be changed every year of
manufacturing.
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GZ3500T
5. Installing Guide Bar and Saw Chain
A standard saw unit package contains the items as illustrated.
Bar protector
Bar protector
Guide bar
Guide bar
Saw chain
Saw chain
Power unit
Plug wrench
Plug wrench
Screwdriver for
Screwdriver for
carburetor adjustment
carburetor adjustment
Open the box and install the guide bar and the saw
chain on the power unit as follows:
WARNING
The saw chain has very sharp edges. Use thick protective gloves for safety.
1. Pull the hand guard towards the front handle to check
that the chain brake is not engaged.
2. Loosen the nuts and remove the chain cover.
3. Mount the guide bar then fit the saw chain around
the bar and sprocket.
Chain tensioner
nut
Chain cover
NOTE
Pay attention to the correct direction of the saw chain.
Moving direction
5. While holding up the tip of the bar, adjust the chain
tension by turning the tensioner screw until the tie
straps of chain just touch the bottom side of the bar
rail.
Loosen
Tighten
Tensioner screw
6. Tighten the nuts securely with the bar tip held up
(11.8-14.7 N.m./120-150 kg-cm). Then check the
chain for smooth rotation and proper tension while
moving it by hand. If necessary, readjust with the
chain cover loose.
Tighten
7. Tighten the tensioner screw.
4. Fit the chain tensioner nut into the lower hole of the
guide bar, then install the chain cover, and fasten
the mounting nut finger tight.
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WARNING
A new chain will stretch in its length in the beginning of
use. Check and readjust the tension frequently as a loose
chain can easily derail or cause rapid wear of itself and
the guide bar.
6. Fuel and Chain Oil
FUEL
WARNING
• Gasoline is very flammable. Avoid smoking or
bringing any flame or sparks near fuel. Make sure
to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling and move at least 10 ft (3 m) away from the
fueling point before starting the engine.
■ GASOLINE REQUIREMENTS
• All 2-Stroke RedMax Products are powered by Zenoah
Professional-Commercial Duty, Hi-Performance, HiRPM, Air Cooled 2-Stroke engines.
RedMax/Zenoah – Hi-Performance 2-stroke engines
produce higher HP outputs as compared to standard
Home Owner Duty or Light Commercial Duty production engines offered by most manufacturers.
• Exhaust emission are controlled by the fundamental
engine parameters and components (eq.,
carburation, ignition timing and port timing) without
addition of any major hardware or the introduction of
an inert material during combustion.
• The RedMax/Zenoah Engines are registered and cer-
tified with CARB (California Air Resources Board) and
EPA (Environmental Protection Agency) to operate on
CLEAN Mid-grade 89 octane or Premium, unleaded
(lead-free) gasoline and RedMax Air-Cooled "Max
Life", Synthetic blend Premium two-stroke engine oil
mixed at 50:1 ratio.
• Unleaded gasoline is recommended to reduce the
contamination of the air for the sake of your health
and the environment.
• This Hi-Performance Air Cooled 2-stroke Engine re-
quires the use of
grade or Premium) clean gasoline.
Gasoline may contain maximum of 10% Ethanol (grain
alcohol) or up to 15% MTBE (Methyl tertiary-butyl
ether). Gasoline containing Methanol (Wood Alcohol)
is NOT approved.
NOTE
Minimum 89 Octane (Mid
[R+M]
2
GZ3500T
WARNING
•Gasoline with an octane rating lower than 89 will
greatly increase the engines operating temperature.
Low octane gasoline will cause detonation (knock)
resulting in piston seizures and major internal engine
components damage.
• Poor quality gasolines or oils may damage sealing
rings, fuel lines or fuel tank of the engine.
NOTE
• Failures caused by operating engines on gasoline
with octane rating lower than 89 are not covered by
the RedMax Two-Stroke engine warranty.
WARNING
• Alternative Fuels (Not Gasoline)
Alternative fuels, such as E-15 (15% ethanol), E20 (20% ethanol), E-85 (85% ethanol) are NOT classified as gasoline and are NOT approved for use
in RedMax 2-stroke gasoline engines. Use of alternative
mance and durability problems such as: improper
clutch engagements, overheating, vapor lock,
power loss, lubrication deficiency, deterioration
of fuel lines, gaskets and internal carburetor components, etc... Alternative fuels cause high moisture absorption into the fuel/oil mixture leading to
oil and fuel separation.
■ OIL REQUIREMENTS
• Use only RedMax "Max Life", Synthetic blend Premium Air- Cooled two-stroke engine oil or oil certified
to ISO-Lis JASO-FD registered. RedMax Air-Cooled "Max
Life", Synthetic blend Premium two stroke engine oil
and ISO-Lfully compatible with gasoline's containing 10% Ethanol. RedMax Air-Cooled "Max Life", Synthetic blend
Premium two stroke engine oil and ISO-LCD1378) AND JASO-FD oils are Universal and
should be mixed at 50:1 ratio for all 2 stroke air cooled
engines sold in the past regardless of mixing ratios
specified in those manuals.
•If the oil is registered with JASO, the JASO Logo with
FD and registration number will be displayed on the
container. The highest JASO rating is "FD", which
equals the ISO-L"FB", and "FA".
fuels will cause major engine perfor-
EGD (ISO/CD1378) standard AND one that
EGD (ISO/CD1378) AND JASO-FD oils are
EGD (ISO/
EGD rating. Lower ratings are "FC",
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•IF octane rating of the
area is lower than 89 Octane use Premium Unleaded
Gasoline. The majority of all 2-stroke engine manufacturers in the USA and Canada recommend using
gasoline with 89 Octane or higher.
Mid Grade gasoline in your
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GZ3500T
• Engine problems due to inadequate lubrication
caused by failure to use ISO-L-EGD certified and
JASO FD registered oil such as "MaxLife", RedMax
Synthetic blend Premium 2-stroke oil
WILL VOID THE
REDMAX TWO-STROKE ENGINE WARRANTY.
WARNING
• Do not use NMMA (National Marine Manufacturers
Association), BIA (Boating Industry Association), and
TCW (two cycle water cooled) oils designed for
MoPeds or Outboard, water cooled Marine Engines.
Do not use API (American Petroleum Institute), TC
(Two Cycle) labeled oils. The API-TC test standard
has been discontinued by API in 1995 and it no longer
exists.
IMPORTANT
• Gasoline/Oil mixture Storage Recommendations
Store your gasoline or gasoline/oil mixture in a cool
dry area in a tightly sealed approved container to limit
the entry of moisture and additional air (oxygen). Moisture and air cause the development of varnish and
gum, making the fuel stale. Stored gasoline and gasoline/oil mixture ages and loses its octane rating and
volatility. Do not mix more gasoline/oil than you intend to use in 30 days, and 60 days when fuel stabilizer is added. RedMax Air-Cooled "Max Life" Synthetic blend Premium two-stroke engine oil
"Con-
tains fuel stabilizer" and will automatically extend
your gasoline/oil mixture life up to 60 days.
■ HOW TO MIX FUEL
RECOMMENDED MIXING RATIO
GASOLINE 50 : OIL 1
(when using RedMax Air-Cooled "Max Life")
avoid mixing up with gasoline or other containers that dont
contain oil.
6. Indicate the contents on outside of container for easy identification.
■ FUELING THE UNIT
1. Untwist and remove the fuel cap. Rest the cap on a
clean surface.
2. Put fuel into the fuel tank to 80% of the full capacity.
3. Fasten the fuel cap securely and wipe up any fuel
spillage around the unit.
WARNING
1. Select flat and bare ground for fueling.
2. Move at least 10 feet (3 meters) away from the
fueling point before starting the engine.
3. Stop the engine before refueling the unit. At that
time, be sure to sufficiently agitate the mixed
gasoline in the container.
■ FOR YOUR ENGINE LIFE, AVOID
1. FUEL WITH NO OIL (RAW GASOLINE) – It will cause
severe damage to the internal engine parts very quickly.
2. GASOHOL – It can cause deterioration of rubber and/
or plastic parts and disruption of engine lubrication.
3. OIL FOR 4-CYCLE ENGINE USE – It can cause spark
plug fouling, exhaust port blocking, or piston ring seizure.
4. Mixed fuels which have been left unused for a pe-
riod of one month or more may clog the carburetor
and result in the engine failing to operate properly.
5. In the case of storing the product for a long period of
time, clean the fuel tank after rendering it empty. Next,
Start the engine and run the carburetor dry residual
fuel.
6. In the case of scrapping the used mixed oil container,
scrap it only at an authorized depository site.
NOTE
• As for details of quality assurance, read the description in the section Limited Warranty carefully. Moreover, normal wear and change in product with no
functional influence are not covered by the warranty.
Also, be careful that, if the usage in the instruction
manual is not observed as to the mixed gasoline,
type of oil or fuel to be used. described therein, it
may not be covered by the warranty.
WARNING
• Pay attention to agitation.
1. Measure out the quantities of gasoline and oil to be
mixed.
2. Put some of the gasoline into a clean, approved fuel
container.
3. Pour in all of the oil and agitate well for 10seconds.
4. Pour in the rest of gasoline and agitate again for at least
one minute. As some oils may be difficult to agitate depending on oil ingredients, sufficient agitation is necessary. Be careful that, if the agitation is insufficient, there is
an increased danger of early piston seizure due to abnormally lean mixture.
5. Place a clear indication on the outside of the container to
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CHAIN OIL
• Use motor oil SAE #10W-30 all year round or SAE
#30 ~ #40 in summer and SAE #20 in winter.
NOTE
• Do not use wasted or regenerated oil that can cause damage to the oil pump.
7. Operating the Engine
GZ3500T
WARNING
It is very dangerous to run a chainsaw with mounts broken
or any missing parts.
Before starting engine, make sure that all the parts including bar and chain are installed properly.
■ ST ARTING THE ENGINE
Normal start
1. Fill fuel and chain oil tanks respectively, and tighten
the caps securely.
Chain oil
Fuel
2. Continuously push the priming bulb until fuel comes
in the bulb. Then press additional 5 times.
3. Set the switch to “I” position.
is very dangerous.
6. When engine has started, turn the choke knob to
the closed position and then pull the starter again to
run the engine.
7. Allow the engine to warm up with the throttle lever
pulled slightly.
■ CHECKING THE OIL SUPPLY
WARNING
Make sure the bar and the chain is in place when checking the
oil supply.
If not, the rotating parts may be exposed. It is very dangerous.
After starting the engine, run the chain at medium speed
and see if chain oil is scattered off as shown in the figure.
Chain oil
The chain oil flow can be changed by inserting a
screwdriver in the hole on bottom of the clutch side.
Adjust according to your work conditions.
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Switch
Throttle
interlock
Throttle lever
4. Turn the choke knob to the closed position.
NOTE
Choke
closed
Open with
throttle lever
Choke
open
When restarting immediately after stopping hot engine, choke knob should be in the open position.
5. While holding the saw unit securely on the ground,
pull the starter rope using short strokes vigorously.
WARNING
Do not start the engine while the chain saw hangs in
one hand. The saw chain may touch your body. This
Chain oil flow adjusting
Rich
Lean
shaft
The oil tank should become nearly empty by the time
fuel is used up. Be sure to refill the oil tank every time
when refueling the saw.
NOTE
The adjustment range of the discharge is 90°. Pay attention not to turn any further, as this may damage the
adjuster of the oil pump.
■ ADJUSTING THE CARBURETOR
Idle adjusting
screw
H needle
L needle
The carburetor on your unit has been factory adjusted,
but may require fine tuning due to a change in operating conditions.
Before adjusting the carburetor, make sure that the provided air/fuel filters are clean and fresh and the fuel properly mixed.
When adjusting, take the following steps:
NOTE
Be sure to adjust the carburetor with the bar chain attached.
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GZ3500T
1. H and L needles are restricted within the number of
turns as shown below.
H needle : -1/4
L needle : -1/4
2. Start the engine and allow it to warm up in low speed
for a few minutes.
3. Turn the idle adjusting screw (T) counterclockwise
so that the saw chain does not turn. If the idling
speed is too slow, turn the screw clockwise.
4. Make a test cut and adjust the H needle for best
cutting power, not for maximum speed.
■ CHAIN BRAKE
The chain brake is a device which stops the chain instantaneously if the chain saw recoils due to kickback.
Normally, the brake is activated automatically by inertial
force. It can also be activated manually by pushing the
brake lever (left-hand guard) down toward the front.
When the brake operates, a yellow cone pops up from
the base of the brake lever.
Releasing the Brake
Pull the brake lever up and back toward the left-hand
handle until it clicks into place.
WARNING
• When the brake operates, release the throttle lever
to slow down the engine speed. Continuous operation with the brake engaged will generate heat from
the clutch and may cause overheating or clutch failure.
• At machine inspection prior to each job, check the
operating condition of the brake following these
steps.
1. Start the engine and grasp the handle securely with
both hands.
2. Pulling the throttle lever to maintain the chain operation, push the brake lever (left-hand guard) down
toward the front using the back of your left hand.
3. When the brake operates and the chain is stopped,
release the throttle lever.
4. Release the brake.
Activate the brake
Release
■ STOPPING THE ENGINE
1. Release the throttle lever to allow the engine to idle
for a few minutes.
2. Set the switch to the “O” (STOP) position.
8. Sawing
WARNING
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• Before proceeding to your job,
read the section “For Safe
Operation”. It is recommended
to first practice sawing small
logs. This also helps you get
accustomed to your unit.
• The chain saw must only be
used for cutting wood. It is forbidden to cut other types of
material. Vibrations and kickback vary with different materials. Do not use the chain saw
as a lever for lifting, moving or
splitting objects. Do not lock it
over fixed stands. It is forbidden to hitch tools or applications to the PTO other than
those specified by the manufacturer.
Switch
• It is not necessary to force the saw into the cut. Apply only light pressure while running the engine at
full throttle.
• When the saw chain is caught in the cut, do not
attempt to pull it out by force, but use a wedge or a
lever to open the way.
■ GUARD AGAINST KICKBACK
GZ3500T
• This saw is equipped with a chain
• It is extremely important that the
■ FELLING A TREE
Felling direction
brake that will stop the chain in the
event of kickback if operating properly. You must check the chain brake
operation before each usage by running the saw at full the throttle for I 2 seconds and pushing the front
hand guard forward. The chain
should stop immediately with the
engine at full speed. If the chain is
slow to stop or does not stop, replace the brake band and clutch
drum before use.
chain brake be checked for proper
operation before each use and that
the chain be sharp in order to maintain the kickback safety level of this
saw. Removal of the safety devices,
inadequate maintenance, or incorrect replacement of the bar or chain
may increase the risk ot serious personal injury due to kickback.
A log lying on the ground
Saw down halfway, then roll the log over and cut from
the opposite side.
A log hanging off the ground
In area A, saw up from the bottom one-third and finish
by sawing down from the top. In area B, saw down from
the top one-third and finish by sawing up from the bottom.
Cutting the limbs of Fallen Tree
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Notch cut
Felling cut
1. Decide the felling direction considering the wind,
lean of the tree, location of heavy branches, ease of
completing the task after felling and other factors.
2. While clearing the area around the tree, arrange a
good foothold and retreat path.
3. Make a notch cut one-third of the way into the tree
on the felling side.
4. Make a felling cut from the opposite side of the notch
and at a level slightly higher than the bottom of the
notch.
WARNING
When you fell a tree, be sure to warn neighboring workers of the danger.
Bucking and Limbing
WARNING
• Always ensure your foothold. Do not stand on the log.
• Be alert to the rolling over of a cut log. Especially when
working on a slope, stand on the uphill side of the
log.
• Follow the instructions in “For Safe Operation” to avoid
kickback of the saw.
Before starting work, check the direction of bending
force inside the log to be cut. Always finish cutting from
the opposite side of the bending direction to prevent
the guide bar from being caught in the cut.
First check to which side the limb is bent. Then make
the initial cut from the bent side and finish by sawing
from the opposite side.
WARNING
Be alert to the springing back of a cut limb.
Pruning of Standing Tree
Cut up from the bottom, finish down from the top.
WARNING
• Do not use an unstable foothold or ladder.
• Do not overreach.
• Do not cut above shoulder height.
• Always use both your hands to hold the saw.
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GZ3500T
9. Maintenance
WARNING
Before cleaning, the inspecting or repairing the unit, make sure
that engine has stopped and is cool. Disconnect the spark
plug to prevent accidental starting.
■ MAINTENANCE AFTER EACH USE
1. Air filter
Loosen the knob and remove the air cleaner cover. Take off the
filter elements and tap off attached sawdust. When they are
extremely dirty, shakewash with soapy water. Do not use gasoline. Dry them completely before reinstalling.
knob
air cleaner cover
filter elements
2. Oiling port
Remove the guide bar and check the oiling port for clogging.
Oiling port
3. Guide bar
When the guide bar is removed, remove sawdust in the bar
groove and the oiling port.
<Type : sprocket nose>
Grease the nose sprocket from the feeding port on the tip of
the bar.
Grease port
Oiling port
Sprocket
4. Others
Check for fuel leakage and loose fasteners and damage to
major parts, especially handle joints and guide bar mounting.
If any defects are found, make sure to have them repaired before operating the saw again.
■ PERIODICAL SERVICE POINTS
1. Cylinder fins
1. Remove the starter case.
2. Remove sawdust between the
cylinder fins.
3. Clean the inside of the starter case.
2. Fuel filter
(a) Using a wire hook, pull out the filter from the filter port.
WARNING
When installing the filter, do not pinch or fold the suction pipe.
3. Oil filter
1. With a wire hook, take out the oil filter from the feeding
port.
Oil filter
2. Wash the filter with non-flammable solvent.
WARNING
When installing the filter, do not pinch or fold the suction pipe.
4. Spark plug
(0.24~0.28inch)
NGK
CMR7H
Clean the electrodes with a wire brush and reset the gap to
0.6 mm~0.7mm (0.24~0.28inch) as necessary.
5. Sprocket
Check for cracks and for excessive wear interfering with the
chain drive. If the wear is considerable, replace it with new
one. Never fit a new chain on a worn sprocket, or a worn chain
on a new sprocket.
6. Way of the cooling air
WARNING
• The engine metal parts can burn your skin. Never touch the
cylinder, muffler or ignition plug etc. during operation or right
after stopping the engine.
• Before starting the engine, check around the muffler and
remove sawdust. If you do not, it will cause the overheating.
Keep clean area around the muffler.
This engine is air-cooled. Dirt clogging between the inlet port
of the cooling air and cylinder fins will cause overheating of the
engine. Periodically check and clean the cylinder fins after removing the air cleaner and the cylinder cover.
0.2inch (0.5mm)
(b) If dirty, replace filter.
Replace with new one if clogged with dirt.
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Fuel filter
inlet port of the cooling air
IMPORTANT
When installing the cylinder cover, make sure that switch wires
and grommets are positioned correctly in place.
GZ3500T
7. Muffler
WARNING
Regularly inspect the muffler for loose fastening screws,
damage and rust. If you find that exhaust gas leaking remove the muffler. Remove carbon from exhaust port using a
piece of wood or plastic. Make sure no carbon falls inside of
the engine.
1. Removing the underside guard
Confirm that the chain break is released and remove the
chain cover. Next, remove the screws of the recoil case and
the screws of the chain catcher. Draw the underside guard
out in the horizontal direction and remove it from the pin of
the engine case in the downward direction.
Chain cover
Chain catcher
2. Removing the muffler
Remove the screws and nuts attaching the muffler and remove the muffler.
Underside guard
Muffler
3. Removing the spark arrester
Lift up the claw of the guide muffler to take it off in the upward direction, and remove the arrester.
Guide muffler
Spark arrester
WARNING
Right after stopping the engine, do not touch the muffler
with one's bare hands. It will cause to burn your hands.
If carbon clogs between the muffler, it will cause poor-output
and the trouble in starting. After each 100 hours, check and
clean inside the muffler.
8. Spark arrester
The spark arrester is installed to prevent that burnt carbon is
discharged from the muffler tail. Regularly clean it with a wire
brush or a similar tool to remove the carbon.
NOTE
Never use a muffler if the spark arrester is missing or defective.
9. Exhaust port
Remove the muffler, insert a screwdriver into the vent, and wipe
away any carbon buildup after every 100 hours of use. Wipe
away any carbon buildup on the muffler exhaust vent and the
clean cylinder exhaust port at the same time.
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10. Maintenance of Saw Chain and Guide Bar
■ Saw Chain
WARNING
It is very important for smooth and safe operation to
always keep the cutters sharp.
The cutters need to be sharpened when:
• Sawdust becomes powder-like.
•You need extra force to saw in.
• The cut path does not go straight.
•Vibration increases.
• Fuel consumption increases.
Cutter setting standards:
WARNING
Be sure to wear safety gloves.
Before filing:
• Make sure the saw chain is held securely.
• Make sure the engine is stopped.
• Use a round file of proper size for the chain.
Chain type: 91VG
File size: 5/32 in (4.0 mm)
Place the file on the cutter and push straight forward.
Keep the file position as illustrated.
After each cutter has been filed, check the depth gauge
and file it to the proper level as illustrated.
Appropriate gauge checker
.025
Depth gauge standard
″″
″ (0.64 mm)
″″
Make the shoulder round
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GZ3500T
WARNING
Be sure to round off the front edge to reduce the
chance of kickback or tie-strap breakage.
Make sure every cutter has the same length and edge
angles as illustrated.
Cutter length
Filing angle
Side plate angle
Top plate cutting angle
■ Guide Bar
• Reverse the bar occasionally to prevent partial wear.
• The bar rail should always be square. Check for wear
of the bar rail. Apply a ruler to the bar and the out
side of a cutter. If a gap is observed between them,
the rail is normal. Otherwise, the bar rail is worn.
Such a bar needs to be corrected or replaced.
Ruler
Gap
No gap
Chain tilts
WARNING:
This saw is equipped with one of the following low
kickback bar/chain combinations:
RedMax Part Number
Bar Size Guide Bar Saw Chain
12 G3112 91VG45X
14 G3114 91VG52X
11. T roub leshooting Guide
Case 1. Starting failure
WARNING
Make sure the icing prevention system is not working.
Check fuel for water
or substandard mixture.
d
Check for engine
flooding.
Replace with proper
a
fuel.
Remove and dry the
spark plug.
a
Then pull the starter
again with no choke.
d
Check spark ignition.
Replace with a new
a
plug.
Case 2. Lack of power/Poor acceleration/
Rough idling
Check fuel for water
or substandard mixture.
Replace with proper
a
fuel.
d
Check air filter and
fuel filter for clogging.
a
Clean.
d
Check carburetor
for inadequate adjustment.
Case 3. Oil does not come out
Check oil for substandard quality.
Readjust speed
a
needles.
Replace.
a
d
Check oil passage
and ports for clogging.
a
Clean.
12. Disposal
When disposing your machine, fuel or oil for the machine, be
sure to follow your local regulations.
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If the unit seems to need further service, please consult
with an authorized service shop in your area.
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board and ZENOAH AMERICA, INC. are pleased to explain the
emission control system warranty on your 2007 and later small off-road engine. In California,
new small off-road engines must be designed, built and equipped to meet the state’s stringent
anti-smog standards. ZENOAH AMERICA, INC. must warrant the emission control system on
your small off-road engine for the periods of time listed below provided there has been no abuse,
neglect or improper maintenance of your small off-road engine.
Your emission control system may include parts such as the carburetor, fuel tank and the ignition
system.
Where a warrantable condition exists, ZENOAH AMERICA, INC. will repair your small off-road
engine at no cost to you including diagnosis, parts and labor.
Manufacturer’s warranty coverage:
The 2007 and later small off-road engines are warranted for two years. If any emissionrelated part on your engine is defective, the part will be repaired or replaced by ZENOAH
AMERICA, INC.
GZ3500T
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Owner’s warranty responsibilities:
– As the small off-road engine owner, you are responsible for the performance of the
required maintenance listed in your owner’s manual. ZENOAH AMERICA, INC.
recommends that you retain all receipts covering maintenance on your small off-road
engine, but ZENOAH AMERICA, INC. can not deny warranty solely for the lack of
receipts or for your failure to ensure the performance of all scheduled maintenance.
– As the small off-road engine owner, you should be aware, however, that ZENOAH
AMERICA, INC. may deny you warranty coverage if your small off-road engine or a part
has failed due to abuse, neglect, improper maintenance or unapproved modification.
– You are responsible for presenting your small off-road engine to a ZENOAH AMERICA,
INC. distribution center as soon as a problem exists. The warranty repairs should be
completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should
contact ZENOAH AMERICA, INC. at (770)-381-5147 or you can write to
ZENOAH AMERICA, INC.
1100 Laval Blvd. Suite 110
Lawrenceville, Georgia 30043
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GZ3500T
LIMITED WARRANTY
EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY, RedMax / ZENOAH
AMERICA, INC., THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE,
FOR THE ORIGINAL AND EACH SUBSEQUENT PURCHASER, ANY PART OR PARTS FOUND TO BE DEFECTIVE IN
MATERIAL AND/OR WORKMANSHIP.
EMISSION-RELATED PARTS ARE:
THE CARBURETOR ASSEMBLY, COIL ASSEMBLY, ROTOR, SPARKPLUG,
AIR FILTER, FUEL FILTER, INTAKE MANIFOLD, AND THE GASKETS
ALL OTHER PARTS EXCEPT ABOVE PARTS, FOR TWO (2) YEARS OF HOME USE, ONE (1) YEAR COMMERCIAL USE
AND NINETY (90) DAYS FOR RENTAL USE FROM THE DATE OF ORIGINAL PURCHASE, THE COMPANY, THROUGH ANY
RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL PURCHASER, ANY PART OF
PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP. THIS IS THE EXCLUSIVE REMEDY.
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE RedMax DEALER.
THE PURCHASER SHALL NOT BE CHARGED FOR DIAGNOSTIC LABOR WHICH LEADS TO THE DETERMINATION
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAGNOSTIC WORK IS PERFORMED AT THE RedMax DEALER.
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE PERFORMANCE OF THE REQUIRED MAINTENANCE AS
DEFINED BY THE MANUFACTURER IN THE OWNER/OPERATOR MANUAL.
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE, OR
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION TO THE EFFECT OF "REPAIR OR REPLACE AS
NECESSARY" SHALL BE WARRANTED FOR THE WARRANTY PERIOD. ANY WARRANTED PART WHICH IS
SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE SHALL BE WARRANTED FOR THE PERIOD OF
TIME UP TO THE FIRST SCHEDULED REPLACEMENT POINT FOR THE PART.
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DURABILITY MAY BE USED IN NONWARRANTY MAINTENANCE OR REPAIRS, AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE
COMPANY.
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAILURE OF A
WARRANTED PART STILL UNDER WARRANTY.
THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF
INSTRUCTION LISTED IN THE OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS,
ACCIDENTAL MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBRICATION, USE OF ANY PARTS OR ACCESSORIES
OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE COMPANY'S CONTROL.
THIS WARRANTY DOES NOT COVER THOSE PARTS REPLACED BY NORMAL WEAR OR HARMLESS CHANGES IN
THEIR APPEARANCE.
THERE ARE NO OTHER EXPRESS WARRANTIES.
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE LIMITED TO TWO (2) YEARS FOR HOME USE, ONE (1) YEAR FOR COMMERCIAL USE AND NINETY (90) DAYS
FOR RENTAL USE, FROM THE ORIGINAL DELIVERY DATE.
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES
ARE EXCLUDED.
SOME STATES DO NOT ALLOW LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS OR EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY
NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY
FROM STATE TO STATE.
IF YOU NEED TO OBTAIN INFORMATION ABOUT THE NEAREST SERVICE CENTER, PLEASE CALL RedMax / ZENOAH
AMERICA, INC. AT (770)-381-5147.
IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE. PLEASE FILL
OUT THE CARD AND SEND IT TO RedMax / ZENOAH AMERICA WITHIN SEVEN (7) DAYS. BE SURE TO KEEP
A COPY FOR YOUR RECORDS.
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ZENOAH AMERICA, INC.
1100 Laval Blvd. Suite 110
Lawrenceville, Georgia 30043
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