RedMax CHT220, CHT220L Owner's/operator's Manual

OWNER'S/OPERATOR'S
MANUAL

MODE D’EMPLOI MANUAL DE

INSTRUCCIONES

HEDGE TRIMMER

TAILLEUSE DE HAIES

CORTASETOS

115 43 11-49 (105)

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.

CHT220

CHT220L

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R

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This spark ignition system complies with
the Canadian standard ICES-002.

Ce système d’allumage par étincelle de véhicule
est conforme à la norme NMB-002 du Canada.

Este sistema de ignición por chispa de vehículo
es conforme con la norma ICES-002 del Canadá.

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OWNER'S/OPERATOR'S
MANUAL

HEDGE TRIMMER

115 43 11-49 (105)

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.

CHT220
CHT220L

This spark ignition system complies with
the Canadian standard ICES-002.

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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

The engine is switched off by moving the stop switch to
the stop position.
CAUTION! The stop switch automatically returns to the
start position. In order to prevent unintentional starting,
the spark plug cap must be removed from the spark
plug when assembling, checking and/or performing
maintenance.

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Protective goggles or a visor must be worn.

WARNING

IMPORTANT

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Contents

■ NOTE THE FOLLOWING BEFORE STARTING:

Please read the operator’s manual carefully.

WARNING! Long-term exposure to noise can result
in permanent hearing impairment. So always use
approved hearing protection.

WARNING! 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.

Your warranty may not cover damage or liability
caused by the use of non-authorized accessories
or replacement parts.

WARNING! Incorrect or careless use of a hedge
trimmer can turn it into a dangerous tool that can
cause serious or even fatal injury. It is extremely
important that you read and understand the
contents of this operator’s manual.

1. Parts location......................................................................4

2. Specifications .....................................................................4

3. Symbols..............................................................................5

4. Emission control .................................................................5

5. For safe operation ..............................................................6

6. Fuel.....................................................................................9

7. Starting and stopping........................................................11

8. Working techniques ..........................................................12

9. Maintenance .....................................................................14

10. Storage .............................................................................18

11. Disposal............................................................................18

12. Troubleshooting guide ......................................................18

WARNING

The engine exhaust from this product

contains chemical known to the State

of California to cause cancer, birth

defects or other reproductive harm.

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1. Parts location

1 Operator's manual
2 Handle
3 Throttle lock
4 Fuel cap
5 Choke control
6 Front handle
7 Blade and blade guard
8 Transport guard

9 Air filter cover
10 Air purge
11 Fuel tank
12 Lock for handle CHT220L
13 Throttle control
14 Spark plug cap and spark plug
15 Cylinder cover
16 Starter handle
17 Stop switch
18 Lubricant filler cap, gear
19 Gear
20 Hand guard
21 Combination spanner
22 Tube of grease

2. Specifications

Model name CHT220 CHT220L
Engine

Cylinder displacement, cu.in/cm

3

21,7 21,7
Cylinder bore, inch/mm 1,26/32 1,26/32
Stroke, inch/mm 1,06/27 1,06/27
Idle speed, rpm 2900 2900
Recommended max. speed, rpm 9000 9000
Max. engine output, acc. to ISO 8893, kW/ rpm 0,6/7800 0,6/7800
Catalytic converter muffler Yes Yes
Speed-regulated ignition system Yes Yes

Ignition system

Spark plug NGK CMR6A NGK CMR6A
Electrode gap, inch/mm 0,02/0,5 0,02/0,5
Fuel and lubrication system
Fuel tank capacity, US pint/litre 0,3 0,3

Weight

Weight without fuel, Lbs/kg 10,3/4,7 10,8/4,9

Sound levels

(see note 1)
Equivalent sound pressure level at the operator's ear,
measured according to EN ISO 10517, dB(A): 93 5, 7/94

Vibration levels

(see note 2)
Equivalent vibration levels (ahv,eq) at handles,
measured according to EN ISO 10517, m/s

2

Front/rear handles: 2,9/4,9 4,1/3,6

Blades

Type Double sided Double sided
Length, mm 450 590
Blade speed, cuts/min 4050 4050

Note 1: Reported data for equivalent sound pressure level for the machine has a typical statistical dispersion (standard

deviation) of 1 dB (A).

Note 2: Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1 m/s

2

.

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3. Symbols

WARNING! Incorrect or careless use of a hedge trimmer can turn
it into a dangerous tool that can cause serious or even fatal injury.
It is extremely important that you read and understand the
contents of this operator’s manual.

Please read the operator’s manual carefully and make sure you
understand the instructions before using the machine.

Always wear:

• Approved hearing protection

• Approved eye protection

Always wear approved protective gloves.

Wear sturdy, non-slip boots or shoes.

Starting instructions See the instructions under the heading Start
and stop.

Other symbols/decals on the machine refer to special
certification requirements for certain markets.

4. Emission control

The Emissions Compliance Period referred to on the Emission
Compliance label indicates the number of operating hours for
which the engine has been shown to meet Federal emissions
requirements.

An emission control label is located on the machine.

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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)
(7) First-aid kit

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

5. For safe operation

other times when your field of vision
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,

NOTE

WARNING

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care should also be taken to constantly
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 high-

speed position when starting the
engine.

• Never start the engine at the cutting
attachment side.

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

IMPORTANT

5. For safe operation

explained in the manual.

1. Grip the handles firmly with both hands
using your whole hand. Place your feet
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. 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.

3. 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.

4. Keep all parts of your body away from
rotating cutting attachment and hot
surfaces.

5. 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.

6. 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

WARNING

IMPORTANT

WARNING

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5. For safe operation

any other part, or when replacing the oil or
any lubricant, always be sure to use only

RedMax products or products which
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 RedMax
Professional-Commercial Duty, Hi-Performance, Hi-RPM, Air
Cooled 2-Stroke engines.
RedMax – 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 Engines are registered and certified 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 Air­Cooled "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 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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Primer bulb: Press the air purge diaphragm repeatedly

until fuel begins to fill the diaphragm (about 6 times). The
diaphragm need not be completely filled.

Starting

Hold the body of the machine on the ground using your left
hand (CAUTION! Not with your foot!). Grip the starter
handle, slowly pull out the cord with your right hand until
you feel some resistance (the starter pawls grip), now
quickly and powerfully pull the cord. Never wrap the

starter cord around your hand.

Push the choke control back to its original position as soon
as the engine fires, and continue trying to start until the
engine starts.

CAUTION! When the choke control is pushed back to its
original position, the engine runs at a heightened speed,
the so called start throttle position, and the blades then
move. Start throttle position is released by throttling using
the throttle lever.

CAUTION! Do not pull the starter cord all the way out and
do not let go of the starter handle when the cord is fully
extended. This can damage the machine.

7. Starting and stopping

■ CHECK BEFORE STARTING

• Inspect the working area. Remove any objects that could
be thrown out.

• Check the cutting attachment. Never use blades that are
dull, cracked or damaged.

• Check that the machine is in perfect working order.
Check that all nuts and screws are tight.

• Make sure the gear housing is lubricated correctly.
See instructions under the heading Gear housing.

• Check that the cutting attachment always stops when
the engine is idling.

• Only use the machine for the purpose it was intended
for.

• Make sure that the handle and safety features are in
good working order. Never use a machine that lacks a
part or has been modified outside its specifications.

• All covers must be correctly fitted and undamaged
before you start the machine.

■ STARTING AND STOPPING

WARNING! The complete gear housing must
be fitted before the machine is started,
otherwise the clutch may loosen and cause
personal injury.

Always move the machine about 3 metres
from the refuelling position before starting.
Place the machine on a firm surface.
Remember that the blades may start to move
when the engine is started. Make sure the
blades cannot come into contact with any
object. Make sure that no unauthorised
persons are in the working area, otherwise
there is a risk of serious personal injury. The
safety distance is 15metres.

Cold engine

Choke:

Set the choke control in the choke position.

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7. Starting and stopping

Warm engine

Hold the body of the machine on the ground using your left
hand (CAUTION! Not with your foot!). Grip the starter
handle, slowly pull out the cord with your right hand until
you feel some resistance (the starter pawls grip), now
quickly and powerfully pull the cord. Never wrap the

starter cord around your hand.

Stopping

The engine is switched off by moving the stop switch to the
stop position.

CAUTION!

The stop switch automatically returns to the start position.In
order to prevent unintentional starting, the spark plug cap
must be removed from the spark plug when assembling,
checking and/or performing maintenance.

■ GENERAL WORKING INSTRUCTIONS

IMPORTANT!

This section takes up the basic safety precautions for
working with a hedge trimmer.
If you encounter a situation where you are uncertain how
to proceed you should ask an expert. Contact your
dealer or your service workshop.
Avoid all usage which you consider to be beyond your
capability.

WARNING! The machine can cause serious
personal injury. Read the safety instructions
carefully. Learn how to use the machine.

WARNING! Cutting tool. Do not touch the
tool without first switching off the engine.

Safety instructions regarding the surroundings

• Never allow children to use the machine.

• Observe your surroundings and make sure that there is
no risk of people or animals coming into contact with the
cutting equipment.

• Ensure that no-one comes closer than 15 m while you
are working.

• Never allow anyone else to use the machine without first
ensuring that they have understood the contents of the
operator's manual.

• Never work from a ladder, stool or any other raised
position that is not fully secured.

• Keep in mind that the operator is responsible for
accidents or hazards occuring to other people or their
property.

Safety instructions while working

• Always ensure you have a safe and stable working
position.

• Never leave the machine unsupervised with the motor
running.

• Always use both hands to hold the machine. Hold the
machine in front of your body.

8. Working techniques

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8. Working techniques

cutting attachment when the machine is not in use.

• Make sure the cutting attachment has stopped before
cleaning, carrying out repairs or an inspection.
Disconnect the HT lead from the spark plug.

• Always wear heavy-duty gloves when repairing the
cutting attachment. This is extremely sharp and can
easily cause cuts.

• Store the machine out of reach of children.

• Use only original spare parts for repairs.

Basic working techniques

• Work with a swinging action from the bottom upwards
when trimming sides.

• Adjust the throttle setting to suit the load.

• When trimming a hedge the engine should always face
away from the hedge.

• Hold the machine as close to your body as possible to
get the best balance.

• Make sure that the tip does not touch the ground.

• Do not rush the work, but work steadily until all the
branches have been cut back cleanly.

CHT220L

The hedge trimmer's rear handle can be set in five
positions by pulling out the catch. See figure. When the
handle is adjusted, the hedge trimmer must be idling or not
running.

• While working the handle should always be facing
upwards irrespective of how the hedge trimmer is
directed.

• Make sure that your hands and feet do not come near
the cutting attachment when the engine is running.

• When the engine is switched off, keep your hands and
feet away from the cutting attachment until it has
stopped completely.

• Watch out for stumps of branches that can be thrown out
during cutting.

• Do not cut too close to the ground. Stones and other
objects can be thrown out.

• Check the working area for foreign objects such as
electricity cables, insects and animals, etc, or other
objects that could damage the cutting attachment, such
as metal items.

• If any foreign object is hit or if vibrations occur stop the
machine immediately. Disconnect the HT lead from the
spark plug. Check that the machine is not damaged.
Repair any damage.

• If anything jams in the blades while you are working,
switch off the engine and wait until it has stopped
completely before cleaning the blades. Disconnect the
HT lead from the spark plug.

If the blades get stuck, they can be loosened by sticking
the combination spanner into the gear housing. Remove
the lubricant plug and stick the combination spanner into
the gearing and turn it back and forth.

Safety instructions after completing work

• The transport guard should always be fitted to the

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9. Maintenance

■ CARBURETOR

Adjustment of the idle speed

Before any adjustments are made, make sure that the air
filter is clean and the air filter cover is fitted. Make sure the
start throttle position is disengaged.

Adjust the idle speed using the idle adjustment screw T, if it
is necessary to readjust. First turn the T screw clockwise
until the cutting attachment starts to move. Then turn the
screw anticlockwise until the cutting attachment stops.
The idle speed is correctly adjusted when the engine runs
smoothly in every position. The idle speed should also be
well below the speed at which the cutting attachment starts
to move.

Rec. idle speed: See the Technical data section.

WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service workshop.
Do not use the machine until it has been
correctly adjusted or repaired.

■ MUFFLER

CAUTION! Some mufflers are fitted with a catalytic

converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.

The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator. The
exhaust gases are hot and can contain sparks, which may
cause fire if directed against dry and combustible
material.

Some mufflers are equipped with a special spark arrestor
mesh. If your machine has this type of muffler, the mesh
must be cleaned. This is best done with a wire brush.

On mufflers without a catalytic converter, the mesh should

be cleaned or replaced if necessary once a week. If the
mesh is damaged it must be replaced. If the mesh is
frequently blocked, this can be a sign that the carburetor is
incorrectly adjusted or that too much oil has been mixed
with the petrol.

On mufflers fitted with a catalytic converter, the mesh must
be checked, and if necessary cleaned, monthly. If the mesh
is damaged it must be replaced. If the screen is frequently
blocked, this can be a sign that the performance of the
catalytic converter is impaired.
Contact your dealer to inspect the muffler. A blocked
screen will cause the machine to overheat and result in
damage to the cylinder and piston.

CAUTION! Never use a machine with a defective muffler.

WARNING! Mufflers fitted with catalytic
converters get very hot during use and
remain so for some time after stopping. This
also applies at idle speed. Contact can result
in burns to the skin.
Remember the risk of fire!

■ COOLING SYSTEM

To keep the working temperature as low as possible the
machine is equipped with a cooling system.

The cooling system consists of:

1 Cooling fins on the cylinder.
2 Cylinder cover (directs cold air over the cylinder).
3 Air intake through the crankcase (inside the tank).

Clean the cooling system with a brush once a week,more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.

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9. Maintenance

■ SPARK PLUG

The spark plug condition is influenced by:

• Incorrect carburetor adjustment.

• An incorrect fuel mixture (too much or incorrect type of
oil).

• A dirty air filter.

These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.

If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0,5 mm
(0,020"). The spark plug should be replaced after about a
month in operation or earlier if necessary.

CAUTION! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the
piston/cylinder. Check that the spark plug is fitted with a
suppressor.

■ AIR FILTER

The air filter must be regularly cleaned to remove dust and
dirt in order to avoid:

• Carburetor malfunctions

• Starting problems

• Loss of engine power

• Unnecessary wear to engine parts

• Excessive fuel consumption.

Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.

Cleaning the air filter

Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water. Allow the filter to dry and then
oil it in according to the instructions.

An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced
with a new one at regular intervals. A damaged air filter
must always be replaced.

■ GEAR

There is a plug for filling lubricant on the gear housing.
Use the grease tube to fill with grease and repeat every 25
hours. Use RedMax special grease.

CAUTION! The gear housing must not be filled completely
with grease. The grease expands as the machine heats up
during operation. If the gear housing was completely filled
with grease it could damage the seals and lead to leakage
of grease.

The grease in the bevel gear does not normally need to be
changed except if repairs are carried out.

■ CUTTING UNIT

Check that the cutting units' screws are fitted correctly.
Tighten them with a tightening torque of 7-10 Nm.

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9. Maintenance

■ CLEANING AND LUBRICATION

Clean any resin and plant residue from the blades using
cleaning agent 531 00 75-13 (UL22) before and after using
the machine.

Check that the blade edges are not damaged or deformed.
File away any burrs.

Check that the blades move freely. Remove the lubrication
plug in the gear housing and stick in the combination
spanner and turn back and forth.

Lubricate the blade bars with special grease, part no.
531 00 75-12 (UL 21) before long periods of storage.

IMPORTANT! Use only RedMax replacement parts.
Use of other brands of replacement parts can
cause damage to your unit or injury to the operator
or others. Your warranty does not cover damage or
liability caused by the use of accessories and/or
attachments not specifically recommended by
RedMax.

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9. Maintenance

■ MAINTENANCE SCHEDULE

The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the
Maintenance section. The user must only carry out the maintenance and service work described in this manual. More
extensive work must be carried out by an authorized service workshop.

Clean the outside of the machine.
Make sure the throttle trigger lock and the throttle function correctly

from a safety point of view.
In order to reduce the risk of fire, dirt, leaves and surplus lubricant, etc

must be cleaned from the muffler, exhaust pipe and engine.
Check that the stop switch works correctly.
Check that the blades do not move when the engine is idling.
Check that the blades are undamaged and show no signs of cracking

or other damage. Replace the blades if necessary.
Check that the blade guard is not damaged or distorted. Replace the

blade if the blade guard is bent or damaged.
Replace the cutting unit if it is bent or damaged.
Check that the hand guard is not damaged. Replace the guard if

damaged.
Check that nuts and screws are tight.
Check that there are no fuel leaks from the engine, tank or fuel lines.
Clean the air filter.

Clean more often if conditions are exceptionally dusty.
Check the starter and starter cord.
Check that the vibration damping elements are not damaged.
Clean the outside of the spark plug. Remove it and check the

electrode gap. Adjust the gap to 0.5 mm (.20"), or replace the spark
plug. Check that the spark plug is fitted with a suppressor.

Clean the machine's cooling system.
Clean the outside of the carburetor and the space around it.
Fill the gear housing with grease. This should be carried out

approximately every 25 working hours.
Check that the screws that hold the blades together are correctly

tightened.
Check and clean the spark arrestor screen on the muffler (only applies

to mufflers fitted with a catalytic converter).
Clean the inside of the fuel tank.
Check the inside of the fuel filter for any dirt or if the fuel hose has any

cracks or other defects. Replace if necessary.
Check all cables and connections.
Check the clutch, clutch springs and the clutch drum for wear. Replace

if necessary by an authorized service workshop.
Replace the spark plug. Check that the spark plug is fitted with a

suppressor.

After 40 After 100

Maintenance Before use:

hours in use hours in use

After each time the machine is used

(25 tim).

X

X

X
X

X

X

X

X

X
X

X
X

X

X
X

X

X

X

X

X

X

X

X

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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.

10. Storage

11. Disposal

• When disposing your machine, fuel or
oil for the machine, be sure to allow
your local regulations.

12. 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: 0.5 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 EPA (U.S. Environmental Protection Agency), CARB (California Air Resources Board), Environment
Canada and RedMax are pleased to explain the emissions control system's warranty on your 2009 and later
small off-road engine. In U.S. and Canada, new equipment that use small off-road engines must be designed,
built, and equipped to meet the applicable Federal or Californian stringent anti-smog standards. RedMax must
warrant the emissions control system on your small off-road engine for the period listed below provided there
has been no abuse, neglect or improper maintenance of your equipment. Your emissions control system may
include parts such as carburetor, ignition system, catalytic converter, fuel tank, filters and other associated
components. Also, included may be hoses, belts, connectors, sensors, and other emission-related assemblies.
Where a warrantable condition exists, RedMax will repair your small off-road engine at no cost to you including
diagnosis, parts and labor.

MANUFACTURER'S WARRANTY COVERAGE

This emissions control system is warranted for two years or if the product qualifies for a longer warranty period
resulting from the type of use, that period shall prevail. If any emissions-related part on your equipment is
defective, the part will be repaired or replaced by RedMax.

OWNER'S WARRANTY RESPONSIBILITIES

As the small off-road engine owner, you are responsible for performance of the required maintenance listed in
your Owner's Manual. RedMax recommends that you retain all receipts covering maintenance on your small off­road engine, but RedMax cannot deny warranty solely for the lack of receipts or your failure to ensure the
performance of all scheduled maintenance. As the small off-road engine owner, you should however be aware
that the RedMax may deny you warranty coverage if your small off-road engine or a part has failed due to
abuse, neglect, or improper maintenance or unapproved modifications.

You are responsible for presenting your small off-road engine to a RedMax distribution center or service center
as soon as the 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 coverage, you should contact RedMax at 1­800-291-8251 or via e-mail at [e-mail].

WARRANTY COMMENCEMENT DATE

The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser.

LENGTH OF COVERAGE

RedMax warrants to the ultimate purchaser and each subsequent owner that the engine or equipment is
designed, built, and equipped so as to conform with all applicable regulations adopted by EPA and CARB, and
is free from defects in materials and workmanship that causes the failure of a warranted part for a period of two
years.

WHAT IS COVERED

REPAIR OR REPLACEMENT OF PARTS Repair or replacement of any warranted part under the warranty

must be performed at no charge to the owner at a warranty station. Warranty services or repairs will be provided
at all RedMax distribution centers that are franchised to service the subject engines. Throughout the emissions
warranty period of two years, RedMax must maintain a supply of warranted parts sufficient to meet the expected
demand for such parts.

WARRANTY PERIOD Any warranted part that is scheduled for replacement as required in the maintenance
schedule, is warranted for the period of time prior to the first scheduled replacement point for that part. If the
part fails prior to the first scheduled replacement, the part will be repaired or replaced by RedMax at no cost.
Any such part repaired or replaced under warranty is warranted for the remainder of the period prior to the first
scheduled replacement point for the part. Any warranted part that is not scheduled for replacement as required
in the maintenance schedule, is warranted for two years or if the product qualifies for a longer warranty period
resulting from the type of use, that period shall prevail. If any such part fails during the period of warranty
coverage, it will be repaired and replaced by RedMax at no cost. Any such part repaired or replaced under the

FEDERAL AND CALIFORNIA EMISSIONS CONTROL WARRANTY

STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS

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warranty is warranted for the remaining warranty period. Any warranted part that is scheduled only for regular
inspection in the maintenance schedule will be warranted for a period of two years. A statement in such written
instructions to the effect of "repair or replace as necessary" will not reduce the period of warranty coverage. Any
such part repaired or replaced under warranty will be warranted for the remaining warranty period.

DIAGNOSIS The owner must not be charged for diagnostic labor that leads to the determination that a
warranted part is in fact defective, provided that such diagnostic work is performed at a warranty station.

CONSEQUENTIAL DAMAGES RedMax is liable for damages to other engine components proximately caused
by a failure under warranty of any warranted part.

EMISSION WARRANTY PARTS LIST

1. Air-induction system*

2. Fuel system*

3. Ignition system*

4. Fuel tank, cap and lines as applicable*
*some components only covered up to point specified by maintenance schedule

WHAT IS NOT COVERED

All failures caused by abuse, neglect or improper maintenance are not covered.

ADD-ON OR MODIFIED PARTS

Add-on or modified parts that are not exempted by CARB or EPA may not be used. The use of any non­exempted add-on or modified parts will be grounds for disallowing a warranty claim. RedMax will not be liable to
warrant failures of warranted parts caused by the use of a non-exempted add-on or modified part.

HOW TO FILE A CLAIM

If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest
authorized servicing dealer or contact RedMax at 1-800-291-8251 or via e-mail at [e-mail].

WHERE TO GET WARRANTY SERVICE

Warranty services or repairs are provided through all RedMax authorized servicing dealers.

MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION-RELATED PARTS

Any replacement part may be used in the performance of any warranty maintenance or repairs and must be
provided without charge to the owner. Such use will not reduce the warranty obligations of the manufacturer.

MAINTENANCE STATEMENT

The owner is responsible for the performance of all required maintenance, as defined in the operator's manual.