RedMax CHT2250 User Manual
OWNER'S/OPERATOR'S
MANUAL
MODE D’EMPLOI MANUAL DE
INSTRUCCIONES
HEDGE TRIMMER
TAILLEUSE DE HAIES
CORTASETOS
848-D16-93A0 (901)
APPLICABLE SERIAL NUMBERS :
90100101 and up
NUMEROS DE SERIE APPLICABLES :
90100101 et au-delà
NÚMEROS DE SERIE APLICABLES:
90100101 y superior
WARNING
The engine exhaust from this
product contains chemicals
known to the State of California to
cause cancer, birth defects or
other reproductive harm.
WARNING
AVERTISSEMENT
AVERTISSEMENT
ADVERTENCIA
ADVERTENCIA
Before using our products,
please read this manual carefully
to understand the proper use of
your unit.
Los gases de escape del motor de
este producto contienen
sustancias químicas conocidas
por el Estado de California como
causantes de cáncer,
malformaciones en recién nacidos
y otros problemas de
reproducción.
Les échappements du moteur de
ce produit contiennent des
produits chimiques connus par
l’Etat de Californie comme étant
responsables de cancers,
d’anomalies congénitales et
d’autres atteintes à l’appareil
reproducteur.
Antes de usar nuestros productos,
lea detenidamente este manual a
fin de familiarizarse con el uso
correcto de este aparato.
Avant d’utiliser cette
ce produit
,
veuillez lire attentivement ce
manuel afin de bien comprendre le
bon fonctionnement de cet
appareil.
CHT2250
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CHT2250
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OWNER'S/OPERATOR'S
MANUAL
HEDGE TRIMMER
848-D16-93A0 (901)
APPLICABLE SERIAL NUMBERS :
90100101 and up
WARNING
The engine exhaust from this
product contains chemicals
known to the State of California to
cause cancer, birth defects or
other reproductive harm.
WARNING
Before using our products,
please read this manual carefully
to understand the proper use of
your unit.
CHT2250
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CHT2250
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
This mark indicates instructions which must be followed
in order to prevent accidents which could lead to serious
bodily injury or death.
This mark indicates instructions which must be followed,
or it leads to mechanical failure, breakdown, or damage.
This mark indicates hints or directions useful in the use
of the product.
NOTE
1. Parts location......................................................................3
2. Specifications .....................................................................3
3. Warning labels on the machine ..........................................4
4. Symbols on the machine ....................................................4
5. For safe operation ..............................................................5
6. Fuel.....................................................................................8
7. Operation..........................................................................10
8. Maintenance .....................................................................12
9. Storage .............................................................................14
10. Disposal............................................................................14
11. Troubleshooting guide ......................................................14
Contents
WARNING
IMPORTANT
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1. Parts location
1. Fuel tank
2. Starter
3. Throttle lever
4. Ignition switch
5. Throttle Cable
6. Muffler
7. Blade
8. Front handle
9. Rear handle
2. Specifications
Model CHT2250
Type Reciprocating
double-sided dual blades
Dry weight 4.6(kg)/10.1(lbs)
Blade size 550(mm)/22(in)
Blade pitch 35(mm)/1.38(in)
Transmission Centrifugal clutch, Cam-crank
Reduction ratio 4.25
Engine Type Air-cooled 2-stroke gasoline
Mode G23LH
Displacement
22.5(cm3)/1.37(cu-in)
Max. output 0.68Hp(0.51kW)at 6500/min
-
1
(rpm)
Idle speed 2800±200/min
-
1
(rpm)
Fuel mixture(Gasoline 50:Oil 1)(when using RedMax/ZENOAH genuine oil)
Carburetor Walbro Diaphragm type
Spark plug CHAMPION RCJ6Y
Fuel tank capacity 0.59(litter)/20.0(fl.oz)
Durability period 50(hrs.)
Specifications are subject to change without notice.
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3. Warning labels on the machine
For safe operation and maintenance, symbols
are carved in relief on the machine. According
to these indications, please be careful not to
take a mistake.
(a) The port to refuel the "MIX GASOLINE"
Position:
FUEL TANK CAP
(b) The direction to close the choke
Position:
AIR CLEANER COVER
(c) The direction to open the choke
Position:
AIR CLEANER COVER
(1) Read owner's manual before operating
this machine.
(2) Wear head, eye and ear protection.
(3) Handling this machine improperly
could result in accidents causing
serious injury or death. Read this
manual carefully and practice using the
hedge-trimmer until you are fully
acquainted with all operations and
have learned to use it correctly.
(4) This is extremely sharp and can easily
cause cuts.
If warning label peel off or become soiled and
impossible to read, you should contact the
dealer from which you purchased the
product to order new labels and affix them in
the required location(s).
Never modify your hedge trimmer.
We won’t warrant the machine, if you use
the remodeled hedge trimmer or you don’t
observe the proper usage written in the
manual.
WARNING
4. Symbols on the machine
*1: The year will be changed every year of manufacturing.
*2: The initial number will be changed every year of
manufacturing.
*3: SP : Sealed tank made of HDPE or PE.
■ EMISSION CONTROL
An emission control label is located on the machine.
USE JASO FD OR ISO L-EGD GRADE 50:1 OIL
MANUFACTURED:
THIS ENGINE MEETS U.S. EPA AND CALIFORNIA
EXH/EVP REGS FOR 2009*1 S.O.R.E.
ENGINE FAMILY :
9HQZS.0234BM*2 DISPL.:
23cc
EMISSION CONTROL SYSTEM :
EXH;EM/EVP;SP*
3
COMPLIANCE PERIOD : 50 HOURS
REFER TO OPERATOR'S MANUAL FOR MAINTENANCE, SPECIFICATIONS AND ADJUSTMENTS.
EMISSION CONTROL INFORMATION
ZENOAH AMERICA INC.
IMPORTANT
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1. THIS MACHINE CAN CAUSE
SERIOUS INJURIES. Read this manual
carefully until you completely
understand and follow all safety and
operating instructions. Also, know how
to stop the machine quickly in an
emergency.
2. Keep this manual handy so that you
may refer to it later whenever any
questions arise. Also note, if you have
any questions which cannot be
answered herein, contact the dealer
from whom you purchased the product.
3. Always be sure to include this manual
when selling, lending, or otherwise
transferring the ownership of this
product.
4. Never allow children or anyone unable
to fully understand the directions given
in the manual to use the machine.
■ WORKING CONDITION
1. When using the product, you should wear
proper clothing and protective equipment.
(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots
2. And you should carry with you.
(1) Attached tools
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area
(rope, warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (for removal of
obstacles)
3. Do not wear loose clothing, jewelry, short
trousers, sandals, or go barefoot. Do not
wear anything which might be caught by a
moving part of the unit. Secure hair so it is
above shoulder length.
■ WORKING CIRCUMSTANCE
1. Never start the engine inside a closed
room or building. Exhaust gases contain
dangerous carbon monoxide.
2. Never use the product,
a. when the ground is slippery or when
you can’t maintain a steady posture.
b. At night, at times of heavy fog, or at any
other times when your field of vision
5. For safe operation
might be limited and it would be difficult
to gain a clear view of the working area.
c. During rain storms, during lightning
storms, at times of strong or gale-force
winds, or at any other times when
weather conditions might make it
unsafe to use the product.
■ WORKING PLAN
1. You should never use the product when
under the influence of alcohol, when
suffering from exhaustion or lack of sleep,
when suffering from drowsiness as a result
of having taken cold medicine or at any
other time when a possibility exists that
your judgment might be impaired or that
you might not be able to operate the
product properly and in a safe manner.
2. When planning your work schedule, allow
plenty of time to rest. Limit the amount of
time over which the product is to be used
continuously to somewhere around 30 ~ 40
minutes per session, and take 10 ~ 20
minutes of rest between work sessions.
Also try to keep the total amount of work
performed in a single day under 2 hours or
less.
1. If you don’t observe the working time,
or working manner (See “USING THE
PRODUCT”), Repetitive Stress Injury
(RSI) could occur.
If you feel discomfort, redness and
swelling of your fingers or any other
part of your body, see a doctor before
getting worse.
2. To avoid noise complaints, in general,
operate product between 8 a.m. and 5
p.m. on weekdays and 9 a.m. to 5 p.m.
on weekends.
Check and follow the local regulations as to
sound level and hours of operations for the
product.
■ BEFORE STARTING THE ENGINE
1. The area within a perimeter of 15 m (50 ft)
of the person using the product should be
considered a hazardous area into which no
one should enter. If necessary, yellow
warning rope, warning signs should be
placed around the perimeter of the area.
When work is to be performed
simultaneously by two or more persons,
care should also be taken to constantly
NOTE
WARNING
look around or otherwise check for the
presence and locations of other people
working so as to maintain a distance
between each person sufficient to ensure
safety.
2. Check the condition of working area to
avoid any accident by hitting hidden
obstacles such as stumps, stones, cans, or
broken glass.
Remove any obstacle before beginning work.
3. Inspect the entire unit for loose fasteners
and fuel leakage. Make sure that the
cutting attachment is properly installed and
securely fastened.
■ STARTING THE ENGINE
1. Keep bystanders especially children, and
animals at least 15 m (50 ft) away from the
operating point. If you are approached,
immediately stop the engine.
2. The product is equipped with a centrifugal
clutch mechanism, so the cutting
attachment might begin to rotate as soon
as the engine is started. When starting the
engine, place the product onto the ground
in a flat clear area and hold it firmly in
place so as to ensure that neither the
cutting part nor the throttle come into
contact with any obstacle when the engine
starts.
Never place the throttle into the highspeed position when starting the engine.
3. After starting the engine, check to make
sure that the cutting attachment stops
rotating when the throttle is moved fully
back to its original position. If it continues
to rotate even after the throttle has been
moved fully back, turn off the engine and
take the unit to your authorized RedMax
servicing dealer for repair.
■ USING THE PRODUCT
Cut only materials recommended by the
manufacturer. And use only for tasks
explained in the manual.
1. Grip the handles firmly with both hands
using your whole hand. Place your feet
IMPORTANT
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5. For safe operation
slightly apart (slightly further apart than the
width of your shoulders) so that your
weight is distributed evenly across both
legs, and always be sure to maintain a
steady, even posture while working.
2. Keep cutting attachment below waist level.
3. Maintain the speed of the engine at the
level required to perform cutting work, and
never raise the speed of the engine above
the level necessary.
4. If the unit starts to shake or vibrate, turn off
the engine and check the whole unit. Do
not use it until the trouble has been
properly corrected.
5. Keep all parts of your body away from
rotating cutting attachment and hot
surfaces.
6. Never touch the muffler, spark plug, or
other metallic parts of the engine while the
engine is in operation or immediately after
shutting down the engine. Doing socould
result in serious burns or electrical shock.
7. While operating the machine be always
sure of a safe and secure operating
position especially when using steps or a
ladder.
• IF SOMEONE COMES
1. Guard against hazardous situations at all
times. Warn adults to keep pets and
children away from the area. Be careful if
you are approached. Injury may result from
flying debris.
2. If someone calls out or otherwise interrupts
you while working, always be sure to turn
off the engine before turning around.
■ MAINTENANCE
1. In order to maintain your product in proper
working order, perform the maintenance
and checking operations described in the
manual at regular intervals.
2. Always be sure to turn off the engine
before performing any maintenance,
checking procedures or working on the
machine.
(1) Check ok!
The metallic parts reach high
temperatures immediately after stopping
the engine.
3. When replacing the cutting attachment or
any other part, or when replacing the oil or
any lubricant, always be sure to use only
RedMax products or products which
WARNING
IMPORTANT
WARNING
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5. For safe operation
have been certified by RedMax for use
with the RedMax product.
4. In the event that any part must be replaced
or any maintenance or repair work not
described in this manual must be
performed, please contact a representative
from the store nearest RedMax authorized
servicing dealer for assistance.
5. Do not use any accessory or attachment
other than those bearing the RedMax mark
and recommended for the unit.
6. Under no circumstances should you ever
take apart the product or alter it in any
way. Doing so might result in the product
becoming damaged during operation or the
product becoming unable to operate
properly.
■ HANDLING FUEL
1. The engine of the RedMax product is
designed to run on a mixed fuel, which
contains highly flammable gasoline. Never
store cans of fuel or refill the tank of the
unit in any place where there is a boiler,
stove, wood fire, electrical sparks, welding
sparks, or any other source of heat or fire
which might ignite the fuel.
2. Never smoke while operating the unit or
refilling its fuel tank.
3. When refilling the tank, always turn off the
engine and allow it to cool down. Take a
careful look around to make sure that there
are no sparks or open flames anywhere
nearby before refueling.
(1) Refill after cooling the engine.
4. Wipe spilled fuel completely using a dry
rag if any fuel spillage occurs during
refueling.
5. After refueling, screw the fuel cap back
tightly onto the fuel tank and then carry the
unit to a spot 3 m or more away from
where it was refueled before turning on the
engine.
6. Do not inhale fuel fumes as they are toxic.
■ TRANSPORTATION
1. When hand-carrying the product, cover
over the cutting part if necessary, lift up the
product and carry it paying attention to the
blade.
2. Never transport the product over rough
roads over long distances by vehicle
without removing all fuel from the fuel tank.
If doing so, fuel might leak from the tank
during transport.
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lines or fuel tank of the engine.
• Failures caused by operating engines on gasoline with octane
rating lower than 89 are not covered
by the RedMax Two-
Stroke engine warranty.
•Alternative Fuels (Not Gasoline)
Alternative fuels, such as E-15 (15% ethanol), E-20 (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 fuels will cause major engine
performance 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 AirCooled two-stroke engine oil or oil certified to ISO-L-EGD
(ISO/CD1378) standard AND
one that is JASO-FD
registered.
RedMax Air-Cooled "Max Life", Synthetic blend Premium two
stroke engine oil and ISO-L-EGD
(ISO/CD1378) AND
JASO-FD
oils are fully compatible
with gasoline's containing 10% Ethanol.
RedMax Air-Cooled "Max Life", Synthetic blend Premium two
stroke engine oil and ISO-L-EGD
(ISO/CD1378) 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-EGD
rating. Lower ratings are "FC", "FB", and "FA".
• 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.
• 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
WARNING
6. Fuel
FUEL
• 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, Hi-RPM, 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 certified with
CARB (California Air Resources Board) and EPA
(Environmental Protection Agency) to operate on CLEAN Midgrade 89 octane or Premium, unleaded (lead-free) gasoline and
RedMax Air-Cooled "Max Life", Synthetic blend Premium twostroke 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 requires the
use of Minimum
89 Octane (Mid 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.
• IF octane rating of the Mid Grade
gasoline in your 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.
• 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
WARNING
[ R+M ]
2
WARNING
NOTE
WARNING
NOTE
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6. Fuel
test standard has been discontinued by API in 1995 and it no
longer exists.
• 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 "Contains 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")
• 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 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 period 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.
• 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.
NOTE
50:1 MIXING CHART
GASOLINE gal. 1 2 3 4 5
2-CYCLE OIL fl.oz 2.6 5.2 7.8 10.4 13
GASOLINE liter 1 2 3 4 5
2-CYCLE OIL ml 20 40 60 80 100
IMPORTANT
WARNING
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pulling the rope or remove the spark
plug and dry it.
■ STOPPING ENGINE
1. Release the throttle lever and run the
engine at idling speed for a half minute.
2. Slide the ignition switch to the STOP
position.
• Except for an emergency, avoid
stopping the engine while running it at
high speed.
■ ADJUSTING IDLING SPEED
1. When the engine tends to stop
frequently at idling mode, turn the idle
set screw clock-wise.
(1) Idle set screw
2. When the cutting blades keep moving
after releasing the throttle trigger, turn
the idle set screw counter-clockwise.
• Warm up the engine before adjusting
the idling speed.
■ HOW TO USE
• This machine is designed so as to
cut twigs upto 8 mm (0.3 inches)
thick. Cutting too thick twigs or
metal wires can not only break the
blade teeth but also give damage to
the drive mechanism.
• When trimming leaves and thin twigs,
guide the blades as drawing a half
circle on the surface, and you will get a
better finish.
• Running the engine at high speed with
the blades Jammed up can shorten the
life of clutch parts. When the blades
have been jammed by thick twigs, stop
operation at once and draw your unit
off the objects after stopping the
engine. When clipping comparatively
thick twigs, move your unit slowly back
and forth like a saw, and they can be
cut to a fine finish.
• When a new unit is first operated, in the
first few minutes grease may come out
of the gear case. But, since this is
NOTE
7. Operation
■ STARTING ENGINE
Keep the blades clear of the
surrounding as they will start moving
upon starting of the engine.
1. When first starting up after putting fuel
into the machine, push the priming
pump until fuel runs out in the clear
tube. Then close the choke. Choking
may not be necessary when re-starting
right after stopping the engine. (OP1)
(1) Primer pump
(2) Choke lever
(3) CLOSE
(4) OPEN
2. Pull the throttle lever and push the lock
button to set the lever in the START
position. (OP2)
(1) Throttle lever
(2) Lock button
3. Slide the ignition switch to the engine
side to set it in the ON position. (OP3)
4. Rest the unit on a firm place. Pull the
starter knob quickly. (OP4)
• Avoid pulling the rope to its end or
returning it by releasing the knob. Such
actions can cause starter failures.
5. When the engine has started, gradually
open the choke.
6. Allow the engine to warm up for a half
minute before starting operation.
• If the engine won't start after several
attempts, open the choke and repeat
NOTE
OP1
OP2
OP3
OP4
OP5
OP6
WARNING
NOTE
NOTE
NOTE
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7. Operation
OP7
OP8
excess grease, there is no cause for
alarm. For next use just wipe it off with
the engine stopped.
HEDGE TRIMMING TECHNIQUES
Trim sides of a hedge first, and then the
top.
Vertical cut:
• With the 2-sided blade model CHT2250
use an arcing cut from the bottom
upwards, then downwards to use both
sides of the blades (OP7).
Horizontal cut:
• In order to get the best cutting results,
slightly tilt the blade (5÷10°) towards
the cutting direction (OP8).
Cut slowly, specially with thick hedges.
Always follow the safety precautions.
The hedge-trimmer must only be used
to trim hedges or small bushes. It is
forbidden to cut other types of
material. Do not use the hedge-trimmer
as a lever to lift, move or break
objects, nor lock it on fixed supports. It
is forbidden to apply tools or
applications that are not the ones
indicated by the manufacturer onto the
hedge-trimmer’s power take-off. Do not
use it for pruning trees or cutting
grass.
WARNING
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MA1
.025 in
0.655mm
MA3
MA2
Maintenance, replacement, or repair of the emission control device and
systems may be performed by any non-road engine repair establishment or
individual.
8. Maintenance
specified by RedMax. (MA3)
• REPLACEMENT PLUG IS
CHAMPION RCJ6Y OR NGK
BPMR7A.
• Note that using any spark plug other
than those designated may result in the
engine failing to operate properly or in
the engine becoming overheated and
damaged.
• To install the spark plug, first turn the
plug until it is finger tight, then tighten it
a quarter turn more with a socket
wrench.
TIGHTENING TORQUE:
87~121 in-lbs
(9.8~13.7 N.m.)
■ MUFFLER
• Inspect periodically, the muffler for
loose fasteners, any damage or
corrosion. If any sign of exhaust
leakage is found, stop using the
machine and have it repaired
immediately.
•Note that failing to do so may result
in the engine catching on fire.
WARNING
• Make sure that the engine has
stopped and is cool before
performing any service to the
machine. Contact with moving
cutting head or hot muffler may
result in a personal injury.
■ AIR FILTER
• The air filter, if clogged, will reduce the
engine performance. Check and clean
the filter element in warm, soapy water
as required. Dry completely before
installing. If the element is broken or
shrunk, replace with a new one. (MA1)
(1) Air filter
■ FUEL FILTER
• When the engine runs short of fuel
supply, check the fuel cap and the fuel
filter for blockage. (MA2)
(1) Fuel filter
■ SPARK PLUG
• Starting failure and mis-firing are often
caused by a fouled spark plug. Clean
the spark plug and check that the plug
gap is in the correct range. For a
replacement plug, use the correct type
WARNING
■ MAINTENANCE CHART
Every Every Every
25 50 100
System/components Procedure
Before hours hours hours
Note
use after after after
fuel leaks, fuel spillage wipe out ✔
fuel tank, air filter, fuel filter inspect/clean ✔✔ replace, if necessary
idle adjusting screw
see adjusting
✔
replace carburetor
idling speed if necessary
spark plug
clean and readjust
✔
GAP : 0.6 ~ 0.7 mm
plug gap replace, if necessary
cylinder fins, intake air cooling vent clean ✔
muffler, spark arrester, cylinder exhaust port
clean ✔
throttle lever, ignition switch check operation ✔
cutting parts
replace if
✔
something’s wrong
gear case grease ✔
screws/nuts/bolts tighten/replace ✔✔not adjusting screws
debris guard make sure to attach ✔
ENGINE
SHAFT
IMPORTANT
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■ SPARK ARRESTER (MA4)
• The muffler is equipped with a spark
arrester to prevent red hot carbon from
flying out of the exhaust outlet.
Periodically inspect and clean as
necessary with a wire brush.
In the State of California it is required
by law (Section 4442 of the California
Public Resources Code) to equip a
spark arrester when a gas powered tool
is used in any forest covered, brush
covered, or grass covered unimproved
land.
(1) Spark arrester
■ INTAKE AIR COOLING VENT
• Never touch the cylinder, muffler, or
spark plugs with your bare hands
immediately after stopping the
engine. The engine can become very
hot when in operation, and doing so
could result in severe burns.
• Clean the cylinder fins with
compressed air or a brush. (MA5)
(1) Cylinder
(2) Intake air cooling vent (back)
• If waste gets stuck and causes
blockage around the intake air cooling
vent or between the cylinder fins, it may
cause the engine to overheat, and that
in turn may cause mechanical failure
on the part of the hedge-trimmer.
■ BLADES
Oil blades each gas tank filling. (MA6)
• Make sure that the blade bolts are
well tightened.
• The blade assembly is designed to
automatically compensate for any
play between the blades.
■ Sharpening (MA7)
Always keep the file or sharpener at an
angle of 45° to the blade, and:
• Always grind in the direction of the
cutting edge;
• Note: files cut only in one direction; lift
WARNING
MA4
MA5
MA6
MA7
MA8
MA9
8. Maintenance
the file from the blade when returning
to start a new pass;
•Remove all burr from the edge of the
blade with a slip stone;
• Remove as little material as possible;
• Before refitting the sharpened blades,
remove filings and then apply grease.
Do not try to sharpen a damaged blade:
change it or take it to a Service dealer.
■ REDUCTION GEARBOX
Refill gear housing every 25 working
hours.
Use greese pump. Feed greese until it
comes out of the base of blades. (MA8)
■ PROCEDURES TO BE PERFORMED
AFTER EVERY 100 HOURS OF USE
1. Remove the muffler, insert a
screwdriver into the vent, and wipe
away any carbon buildup. Wipe away
any carbon buildup on the muffler
exhaust vent and cylinder exhaust port
at the same time.
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has
worked its way in between the clutch
lining and drum, and if it has wipe it
away using oil-free, lead-free gasoline.
WARNING
IMPORTANT
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1. Oil the blade to prevent rust.
2. Empty the fuel tank and put the cap
back on.
3. Remove the spark plug, pour a small
amount of oil into the cylinder.
4. Rotate the crankshaft several times
using the starting rope in order to
distribute the oil. Put the spark plug
back in.
5. Wrap the engine with a plastic sheet.
6. Store the trimmer in a dry place,
preferably not in direct contact with the
floor and away from heat sources.
9. Storage
10. Disposal
• When disposing your machine, fuel or
oil for the machine, be sure to allow
your local regulations.
11. Troubleshooting guide
Case 1. Starting failure
CHECK PROBABLE CAUSES ACTION
fuel tank ➞ incorrect fuel ➞ drain it and with correct fuel
fuel filter ➞ fuel filter is clogged ➞ clean
carburetor adjustment screw ➞ out of normal range ➞ adjust to normal range
sparking (no spark) ➞ spark plug is fouled/wet ➞ clean/dry
➞ plug gap is incorrect ➞ correct (GAP: 0.6 – 0.7 mm)
spark plug ➞ disconnected ➞ retighten
Case 2. Engine starts but does not keep running/Hard re-starting.
CHECK PROBABLE CAUSES ACTION
fuel tank ➞ incorrect fuel or staled fuel ➞ drain it and with correct fuel
carburetor adjustment screw ➞ out of normal range ➞ adjust to normal range
muffler,cylinder (exhaust port) ➞ carbon is built-up ➞ wipe away
air cleaner ➞ clogged with dust ➞ wash
cylinder fin, fan cover ➞ clogged with dust ➞ clean
When your unit seems to need further service, please consult with our service shop in your area.
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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.
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 e 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
CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
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ZENOAH AMERICA, INC.
1100 Laval Blvd. Suite 110
Lawrenceville, Georgia 30043
EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY OF THE UNIT,
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 AND 180 DAYS COMMERCIAL 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 OF HOME USE AND 180 DAYS COMMERCIAL 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.
LIMITED WARRANTY
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