Efco DS 2400 H Operator's Instruction Manual

DS 2400 H (1.32 cu.in)

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OPERATOR’S INSTRUCTION MANUAL
MANUEL D’UTILISATION ET D’ENTRETIEN
MANUAL DE INSTRUCCIONES

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INTRODUCTION

To correctly use the hedge trimmer and prevent accidents, do not start work without having
first carefully read this manual. You will find explanations concerning the operation of the
various parts plus instructions for necessary checks and relative maintenance.

Note: Illustrations and specifications in this manual may vary according to Country
requirements and are subject to change without notice by the manufacturer.

THE OPERATOR’S MANUAL

Your operator’s manual is for your protection. READ IT. Keep it in a safe place for
reference. Know what you are doing before you begin assembly of the unit. Proper
preparation and upkeep go hand-in-hand with satisfactory performance of the hedge
trimmer and safety.
Contact your dealer or the distributor for your area if you do not understand any of the
instructions in this manual.
In addition to the operating instructions, this manual contains paragraphs that require your
special attention.
Such paragraphs are marked with the symbols described below:

Warning: where there is a risk of an accident or personal injury or serious damage to property.
Caution: where there is a risk of damaging the machine or its individual components.

WARNING - To ensure safe and correct operation of the hedge
trimmer this operator's manual should always be kept with or near
the machine. Do not lend or rent your hedge trimmer without the
operator's instruction manual.

WARNING: Allow only persons who understand this manual to
operate your hedge trimmer.

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TABLE OF CONTENTS

PRODUCT IDENTIFICATION

Hedge Trimmer Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY

Understanding Safety Labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

State and Local Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SAFETY RULES

Basic Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Fuel Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Operation and Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Precautions to Reduce Vibration Risk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ASSEMBLY

Cutting implement assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Fitting the handle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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OPERATION

Fueling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Preparation for Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Starting the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Breaking-in the Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Stopping the Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Working Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

MAINTENANCE

Maintenance Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Blade Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Carburetor Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Fuel Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Starter Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Spark Plug. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Spark arresting muffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Blade gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Angle drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

TROUBLESHOOTING

Using Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

STORAGE

Storing Hedge Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

TECHNICAL DATA

DS 2400 H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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PRODUCT IDENTIFICATION

Hedge Trimmer Components

1. Harness attachment

2. On/o switch

3. Mu er guard

4. Spark plug

5. Air  lter

6. Fuel tank cap

7. Fuel tank

8. Throttle lever

9. Primer bulb

10. Starter handle

11. Choke lever

12. Shaft arm

13. Rear handle

14. Front handle

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15. Cutting implement

16. Blades

17. Blade gearbox

18. Angle drive grease nipple

19. Angle adjustment handgrip

20. Clamp screws

21. Angle drive

22. Selector disc

23. Blade gearbox grease nipple

24. Blade cover

25. Harness

26. Allen Key

27. Combination wrench

SAFETY

Understanding Safety Labels

- This symbol indicates Warning, and
Caution.

- Your manual contains special
messages to bring attention to
potential safety concerns, machine
damage as well as helpful operating
and servicing information. PLEASE
READ ALL THE INFORMATION
CAREFULLY TO AVOID INJURY AND
MACHINE DAMAGE.

- Wear eye, hearing and head
protection when operating this
equipment.

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- Wear non-slip, heavy-duty protective
gloves when handling hedge trimmer
and blade.

- WARNING! The surface can be hot!

State and Local Requirements

This engine is NOT equipped with a Spark Arrester System complying with the requirements of SAE Recommended
Practice J335 and California Codes 4442 and 4443. All national forest land and land managed by the states of

California, Maine, Washington, Idaho, Minnesota, New Jersey and Oregon require internal combustion
engines to be equipped with a spark arrester screen by law. Other states and federal agencies are enacting
similar regulations.

Operating this engine in a state or locale where such regulations apply, could result in a violation of the law.

Note: When using this machine for logging purposes, refer to Code of Federal Regulations, Parts 1910 and

1928.

WARNING: The ignition system of your unit produces an electromagnetic field of a very low
intensity. This field may interfere with some pacemakers. To reduce the risk of serious or fatal
injury, persons with pacemaker should consult their physician and the pacemaker manufacturer
before operating this tool.

WARNING: Muffler surfaces are very hot during and after operation of the hedge trimmer,
keep all body parts away from the muffler. Serious burns may occur if contact is made with
the muffler.

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SAFETY

WARNING: Exposure to vibrations through prolonged use of gasoline powered hand tools could
cause blood vessel or nerve damage in the fingers, hands, and wrists of people prone to
circulation disorders or abnormal swellings. Prolonged use in cold weather has been linked to
blood vessel damage in otherwise healthy people. If symptoms occur such as numbness, pain,
loss of strength, change in skin color or texture, or loss of feeling in the fingers, hands, or wrists,
discontinue the use of this tool and seek medical attention.

WARNING: The engine exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm. Operate your hedge trimmer
outdoors only in a well ventilated area.

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SAFETY RULES

Basic Safety Precautions

• Read this manual carefully until you completely understand and
can follow all safety rules, precautions, and operating instructions
before attempting to use the unit.

• Restrict the use of your hedge trimmer to adult users who
understand and can follow safety rules, precautions, and operating
instructions found in this manual. Minors should never be allowed
to use a hedge trimmer.

• Do not handle or operate a hedge trimmer when you are fatigued,

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ill, or upset, or if you have taken alcohol, drugs, or medication. You
must be in good physical condition and mentally alert. Hedge
trimmer work is strenuous. If you have any condition that might be
aggravated by strenuous work, check with your doctor before
operating a hedge trimmer (Fig. 1). Be more cautious before rest
periods and towards the end of your shift.

• Keep children, bystanders, and animals a minimum of 35 feet (10
meters) away from the work area. Do not allow other people or
animals to be near the hedge trimmer when starting or operating
the hedge trimmer (Fig. 2).

• While working with the hedge trimmer, always use safety protective
approved clothing. The use of protective clothing does not
eliminate injury risks, but reduces the injury effects in case of
accident. Consult your trusted supplier to choose equipment in
compliance with legislation. The clothing must be proper and not
an obstacle. Wear adherent anti-cut clothing. Protective jackets
(Fig.3) and dungarees (Fig.3) are ideal. Do not wear clothes,
scarves, ties or bracelets that can stuck in to twigs. Tie up and
protect long hair (example with foulards, cap, helmets, etc.). Safety

boots having skid-proof sole and anti-piercing insert (Fig.4).
Wear protective goggles or face screens (Fig.5)!. Use protections
against noises: for example noise reduction ear guards (Fig.4)
or earplugs. The use of protections for the ear requests much more

attention and caution, because the perception of danger audio
signals (screaming, alarms, etc.) is limited. Wear gloves (Fig.6,

page 8).

• Only loan your hedge trimmer to expert users who are completely
familiar with hedge trimmer operation and correct use. Give other
users the manual with operating instructions, which they have to
read before using the hedge trimmer.

• Check the hedge trimmer each day to ensure that each device,
whether for safety or otherwise, is functional.

• Never use a damaged, modified, or improperly repaired or
assembled hedge trimmer. Do not remove, damage or deactivate
any of the safety devices. Always replace blade, hand guard
immediately if it becomes damaged, broken or is otherwise
removed.

• Carefully plan your working operation in advance. Do not start
cutting until you have a clear work area, secure footing.

• All hedge trimmer service, other than the operations shown in the
present manual, have to be performed by competent personnel.

• 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. It is unadvisable to cut other types of material.

• It is unadvisable to hitch tools or applications to the P.t.o. that are
not specified by the manufacturer.

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SAFETY RULES

Fuel Handling

• To reduce the risk of fire and burn injury, handle fuel with care.
It is highly flammable.

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• Mix and store fuel in a container approved for gasoline (Fig. 8).

• Mix fuel outdoors where there are no sparks or flames.

• Select bare ground, stop engine, and allow to cool before

refueling.

• Loosen fuel cap slowly to release pressure and to keep fuel from
escaping around the cap.

• Tighten fuel cap securely after refueling. Unit vibration can cause
an improperly tightened fuel cap to loosen or come off and spill
quantities of fuel.

• Wipe spilled fuel from the unit. Move 10 feet (3m) away from
refueling site before starting engine (Fig. 9).

• Never attempt to burn off spilled fuel under any circumstances.

• Do not smoke while handling fuel or while operating the hedge
trimmer.

• Store fuel in a cool, dry, well ventilated place.

• Never place the hedge trimmer in a combustible area such as dry
leaves, straw, paper, etc.

• Store the unit and fuel in an area where fuel vapors cannot reach
sparks or open flames from water heaters, electric motors or
switches, furnaces, etc.

• Never take the cap off the tank when the engine is running.

• Never use fuel for cleaning operations.

• Take care not to get fuel on your clothing.

WARNING: Gasoline is an extremely flammable fuel. Use
extreme caution when handling gasoline or fuel mix. Do
not smoke or bring any fire or flame near the fuel or the
hedge trimmer (Fig. 7).

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Operation and Safety

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WARNING: Always hold the hedge trimmer with both
hands when the engine is running. Use a firm grip with
thumbs and fingers encircling the hedge trimmer
handles (Fig. 10).

• Keep all parts of your body away from the hedge trimmer when the
engine is running.

• Always carry the hedge trimmer with the engine stopped the blade
to the rear, and the muffler away from your body. When transporting
your hedge trimmer, use the appropriate blade cover (Fig. 11).
When transporting in a vehicle, keep blade covered with the blade
cover. Properly secure your hedge trimmer to prevent turnover, fuel
spillage and damage to the hedge trimmer.

• Do not operate a hedge trimmer with one hand! Serious injury
to the operator, helpers, bystanders, or any combination of these
persons may result from one-handed operation.

A hedge trimmer is intended for two-handed use.

• Before you start the engine, make sure the hedge trimmer is not
contacting any object.

• Shut off the engine before setting down the hedge trimmer.

Do not leave the engine running unattended.

• Only use the hedge trimmer in well-ventilated places, do not

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SAFETY RULES

operate the hedge trimmer in explosive or flammable atmospheres
or in closed environments (Fig. 12). Beware of carbon monoxide
poisoning.

• Do not operate hedge trimmer from a ladder or in a tree. Always cut
from a firm-footed and safe position.

• Do not cut near electric cables.

• Keep the handles dry, clean, and free of oil or fuel mixture.

• When the motor is running, grip the front handle firmly with your
left hand and the back handle with your right hand (Fig. 10). Check

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that all parts of the body are kept away from the blades and muffler.
Never use a cross-handed grip. Left-handers should follow these
instructions too. Keep a proper cutting stance.

• Always cut from a firm-footed and safe position, particularly when
using steps and stools (Fig. 13).

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SAFETY RULES

Precautions to Reduce Vibration Risk

• The hedge trimmer is provided with anti-vibration (AV) system; never alter or modify it.

• Wear gloves and keep your hands warm.

• Keep the blade sharp and the hedge trimmer, including the AV system, well maintained. A dull blade will increase
cutting time, will increase the vibrations transmitted to your hands.

• Maintain a firm grip at all times, but do not squeeze the handles with constant, excessive pressures, take
frequent breaks. All the above mentioned precautions do not guarantee that you will not sustain whitefinger
disease or carpal tunnel syndrome. Therefore, continual and regular users should monitor closely the condition
of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.

Maintenance Precaution

WARNING: Never operate a hedge trimmer that is damaged, improperly adjusted, or is not
completely and securely assembled.

• Be sure that the blade stops moving when the throttle control trigger is released. If the blade moves at idle
speed, the carburetor may need adjusting, see Operation-Carburetor Adjusting Section. If the blade moves at
idle speed after adjustment has been made, contact a Servicing Dealer for adjustment and discontinue use until
the repair is made.

WARNING: All hedge trimmer service, other than items in the Operator's Manual maintenance
instructions, have to be performed by competent hedge trimmer service personnel. (If improper
tools are used to remove the flywheel or clutch, 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 burst and serious injury could result.)

• Never modify your hedge trimmer in any way.

• Keep the handles dry, clean, and free of oil or fuel mixture.

WARNING: Use only accessories and replacement parts recommended.

• Never touch the blade or attempt to service the hedge trimmer while the engine is running.

• Never use fuel for cleaning operations.

• Keep the hedge trimmer in a dry place, off the ground with the blade cover on and the tanks empty.

• If your hedge trimmer is no longer usable, dispose of it properly without damaging the environment by

handing it in to your local Dealer who will arrange for its correct disposal.

• Replace immediately any safety device when damaged or broken.

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WARNING: The muffler and other parts of the engine (e.g. fins of the cylinder, spark plug)
become hot during operation and remain hot for a while after stopping the engine. To reduce
risk of burns do not touch the muffler and other parts while they are hot.

ASSEMBLY

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Cutting implement assembly

1. Remove the plug (A, Fig. 14)

2. Loosen the clamp screws (B, Fig.14) of the hedgetrimmer angle
drive and couple to the end of the shaft arm, twisting slightly
one way and the other (Fig.15). When the end of the arm can no
longer be seen through the clamp slit (Fig.16), push home until it
will go no further.

3. Tighten the clamp screws fully (B, Fig.17) to secure the
attachment.

Fitting the handle (Fig.18)

Fit the handle onto the shaft arm and secure it using screws (A),
washers, and nuts. The handle position is calculated depending on
the requirements of the operator.

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OPERATION

Fueling (Do Not Smoke!) (Fig. 21)

This product is powered by a 2-cycle engine and requires pre-mixing
gasoline and 2-cycle oil. Pre-mix unleaded gasoline and 2-cycle
engine oil in a clean container approved for gasoline (Fig. 19).
RECOMMENDED FUEL: THIS ENGINE IS CERTIFIED TO OPERATE ON
UNLEADED GASOLINE INTENDED FOR AUTOMOTIVE USE WITH AN
OCTANE RATING OF 89 ([R + M] / 2) OR HIGHER (Fig. 20).
Mix 2-Cycle Engine Oil with gasoline according to the instructions on
the package. We strongly recommend the use of 2% (50:1) Efco Two
Cycle Engine Oil, which is specifically formulated for all Efco air-

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cooled two-stroke engines.
The correct oil / fuel proportions shown in the table below are
suitable when using the Efco Two Cycle Engine Oil or an equivalent
high-quality engine oil (JASO specification FD or ISO specification

L-EGD). When oil specifications are NOT equivalent or unknown use
4% (25:1) fuel / oil mixing ratio.

CAUTION: DO NOT USE AUTOMOTIVE OIL OR 2-CYCLE
OUTBOARD OIL.

CAUTION:

- Match your fuel purchases to your consumption; don’t
buy more than you will use in one or two months;

- Store gasoline in a tightly-closed container in a cool,
dry place.

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CAUTION - For the mixture, never use a fuel with an
ethanol percentage higher than 10%; gasohol (mixture
of gasoline and ethanol) up to 10% ethanol or E10 fuel
are acceptable.

When using an Oxygenated Gasoline a good practice of Fuel
Management is necessary.
Gasoline Oxygenated with alcohol readily takes/up water when it is
present; the water may be condensed out of humid air or be a
contaminant in the fuel system, including tank.
The use of Oxygenated Gasoline may cause the occurrence of vapor­lock easier.

NOTE - Prepare only the quantity of mixture required for immediate
use; do not leave fuel in the tank or a container for a long time. Were
commend the use of the additive Emak ADDITIX 2000 code
001000972 if the mixture is to be stored for 30 days.

Alkylate gasoline

CAUTIONS – Alkylate fuels have different density than
normal fuel. Therefore engines, set with normal fuel,
need different H jet regulation to avoid critical issues.
For this operation it’s necessary turned at a Licensed
Service Dealer.

Fuel Mixture

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2-Cycle Engine Oil (25:1) 4%
Gasoline Oil

1 Gallon (US) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2 oz.

1 Liter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 cc (40 ml)

High Quality 2-Cycle Engine Oil (50:1) 2%
Gasoline Oil

1 Gallon (US) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6 oz.

1 Liter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 cc (20 ml)

OPERATION

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Filling the Tank (Fig. 23)

WARNING: Follow safety instruction for fuel handling.
Always shut off engine before fueling. Never add fuel to
a machine with a running or hot engine. Move at least 10
feet (3m) from refueling site before starting engine
(Fig. 22). DO NOT SMOKE!

1. Clean surface around fuel cap to prevent contamination.

2. Loosen fuel cap slowly.

3. Carefully pour fuel mixture into the tank. Avoid spillage.

4. Prior to replacing the fuel cap, clean and inspect the gasket.

5. Immediately replace fuel cap and hand tighten. Wipe up any fuel
spillage.

NOTE: It is normal for smoke to be emitted from a new engine
during and after first use.

WARNING: Check for fuel leaks, if any are found, correct
before use. Contact a Servicing Dealer if necessary.

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Preparation for Cutting

Harness

Correct adjustment of the harness makes it possible to balance the
tool correctly and set an appropriate height from the ground (Fig.24).

- Put on the harness.

- Attach the hedgetrimmer to the harness by means of the snap hook
(B, Fig.26).

- Position the hook (C, Fig.26) to obtain the best hedgetrimmer balance.

- Position the buckle (D, Fig.25) to obtain the correct height of the
hedgetrimmer.

Proper Grip on Handles.
Refer to Safety Section for appropriate Safety Equipment.

1. Wear non-slip gloves for maximum grip and protection.

When the motor is running, grip the front handle firmly
with your left hand and the back handle with your right
hand (Fig. 27). Check that all parts of the body are kept
away from the blades and muffler. Never use a cross­handed grip. Left-handers should follow these
instructions too. Keep a proper cutting stance.

2. Maintain a proper grip (B, Fig. 28) on the hedge trimmer whenever

the engine is running. The fingers should encircle the handlebar
and the thumb is wrapped under the handlebar.

13

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OPERATION

Oil blades each gas tank filling (Fig. 29). Correct lubrication of the

blades during cutting minimises wear, ensuring longer blade life.
Always use a good quality oil.

Work Area Precautions

29

• Never allow children to operate your hedge trimmer. Only allow

• Keep everyone - helpers, bystanders, children, and animals a safe

• Always cut with both feet on solid ground to prevent being
pulled off balance.

• Do not cut above chest height.

• Do not cut near electrical wires or buildings. Leave this operation

30

• Cut only when visibility and light are adequate for you to see

• Do not cut from a ladder, this is extremely dangerous. Leave this

• Stop the engine if the blade strikes a foreign object. Inspect the

• Keep the blade out of dirt and sand. Even a small amount of dirt will

• Stop the engine before setting the hedge trimmer down.

• Be particularly cautious and alert while wearing hearing
protection because such equipment may restrict your ability to

• Be extremely cautious when working on slopes or uneven ground.

WARNING: Cut only hedges or materials made from
wood. Do not cut metal, plastics, masonry, or non-wood
building materials.

others to use this hedge trimmer who have read this Operator's
Manual or received adequate instructions for the safe and proper
use of this hedge trimmer.

distance from the cutting area (Fig. 30).

for professionals.

clearly.

operation for professionals.

blade and repair parts as necessary.

quickly dull a blade.

hear sounds indicating danger (calls, signals, warnings, etc).

31

32

Starting The Engine

Start-up procedure

1) Slowly push the purge bulb 6 times (A, Fig.31).

2) Pull the choke lever (B, Fig.31) in the CLOSE position [0] (C, Fig.32).
In so doing, it also activates automatically half-throttle.

14

OPERATION

3) Place the machine on the ground in a stable position. Check that

4) Push the choke lever (B, Fig.31) in OPEN (I) position (D, Fig.32).

5) Pull the starter cord to start the engine. Once the machine is

33

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the blade is free. Holding the machine down (Fig.33), pull the
starter rope until the first kick over of the engine is heard (no more
than 3 pulls). A new unit may require additional pulls.

started, warm up the machine for about few seconds, without
touch the throttle lever. The machine could need more seconds to
warm up with cold weather or at high altitudes. Finally, push the
throttle lever (E, Fig.34) for deactivate the automatic half-throttle.

CAUTION:

- Never wrap the starter cord around your hand.

- When pulling the starter rope, do not use the full
extent of the rope as this can cause the rope to break.

- Do not let starter rope snap back. Hold the starter
handle (F, Fig.34) and let the rope rewind slowly.

WARNING: Once the engine is warmed up do not use the
choke to start up again.

34

WARNING! - Use the semi-acceleration device only in the
phase of starting the engine to cold.

WARNING: Do not cut material with the choke/fast idle
lever at the FULL CHOKE position. Do not operate your
hedge trimmer with the starting throttle lock engaged.
Cutting with the starting throttle lock engaged does not
permit the operator proper control of the hedge trimmer
speed.

NOTE - STARTING WARM ENGINE:
Follow above starting instructions, but do not use the open
Choke position for start up again. To set fast idle for warm engine
starting, pull choke out completely and push back in to the
original Close Position.

WARNING: Weather conditions and altitude may affect
carburetion. Do not allow bystanders close to the hedge
trimmer while adjusting the carburetor.

WARNING: Never attempt to start the hedge trimmer
when the blade is in a cut or kerf.

Breaking-In the Engine

The engine reaches maximum power after the first 5-8 hours of
activity. During this period of breaking-in do not use the engine at
wide open throttle without load, to avoid excessive functioning stress.

WARNING! - During the breaking-in period do not vary
the carburetion to obtain a presumed power increment;
the engine can be damaged.

NOTE: It is normal for smoke to be emitted from a new engine
during and after first use.

15

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OPERATION

Difficult Starting (or starting a flooded engine)

The engine may be flooded with too much fuel if it has not started
after 10 pulls. Flooded engines can be cleared of excess fuel by
following the warm engine starting procedure listed above. Ensure
the ON/STOP switch is in the ON position. Starting could require
pulling the starter rope handle many times depending on how badly
the unit is flooded. If engine fails to start refer to the
TROUBLESHOOTING TABLE (page 25).

35

Engine is Flooded

If you did not move the choke lever to warm start, quickly enough
after the engine began to fire, the combustion chamber is flooded.

- Set the on/off switch to STOP.

- Pry off the spark plug boot (1, Fig. 35).

- Unscrew and dry off the spark plug.

- Open the throttle wide.

- Pull the starter rope several times to clear the combustion chamber.

- Refit the spark plug and connect the spark plug boot, press it down

firmly.

- Set the choke lever to OPEN position – even if engine is cold.

- Now start the engine.

Stopping The Engine

Release the throttle trigger (B, Fig. 36) and let the engine return to
idle.
To stop the engine, push the switch (A). Do not put the hedge trimmer
on the ground when the blade is still moving.
In the event that the switch will not function, pull the choke lever in

CLOSE position (refer to Fig. 32) to stop the engine.

36

Pre-operation checking

WARNING: THE HEDGE TRIMMER SHOULD NEVER MOVE
AT IDLE. Turn the idle speed screw “T” counterclockwise
to reduce the idle RPM and stop the blade, or contact a
Servicing Dealer for adjustment and discontinue use
until the repair is made.
Serious personal injury may result from the blade
moving at idle.

16

OPERATION

Working Techniques

General Working Instructions

WARNING: Do not cut during periods of high wind or
heavy precipitation.

WARNING: Never cut, when visibility is poor or in very
high or low temperatures or in freezing weather.

WARNING - Always wear the harness. Be careful not to
touch the gearbox housing after operation; THESE ARE
HOT ENOUGH TO CAUSE BURNS.

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

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33

34

34

WARNING: Faulty blades can increase the risk of
accidents.

WARNING - If correctly used, the hedge trimmer is a
quick, easy to handle and efficient tool; if used
improperly or without the due precautions it could
become a dangerous tool. THE MACHINE CAN CAUSE
SERIOUS INJURY. For pleasant and safe work, always
strictly comply with the safety rules that follow and
throughout this manual.

• 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.

WARNING: The complete clutch cover and gear housing
must be fitted before the machine is started, otherwise
the clutch may come loose and cause personal injury.

WARNING: 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.

• 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 high vibrations occur stop the
machine immediately. Disconnect the HT lead from the spark plug.
Check that the machine is not damaged. Repair any damage.

17

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OPERATION

• If anything jams in the blades while you are working, switch off the

• Always wear heavy-duty gloves when repairing the cutting

• Release the throttle trigger as soon as the cut is completed,

• If the cutter blades become jammed by thick branches or any other

36

Note: The hedgetrimmer can also be used without the handgrip.
In this case, remove the handgrip and hold the front sheath area
(C, Fig. 34) with your left hand during operation.

engine and wait until it has stopped completely before cleaning
the blades. Disconnect the HT lead from the spark plug.

attachment (Fig.33). This is extremely sharp and can easily cause cuts.

allowing the engine to idle. If you run the hedge trimmer at full

throttle without a cutting load, unnecessary wear or damage
can occur to the blade and engine.

obstruction, switch off the engine immediately before attempting
to free the blades.

CAUTION! - Always set the machine on the ground with
the engine switched off and as shown in Fig. 35.

37

38

39

Cutting season

Observe all country-specific and local regulations and ordinances
regarding hedge trimming.

Preparations

Before starting work, scare away small animals so that they cannot be
injured.

Adjusting the hedgetrimmer (Fig.36)

The angle between the hedgetrimmer and the shaft arm is adjustable
through 12 positions from 0° (fully extended) to 90° (right angle) both
up and down (full range of movement 180°) (Fig.37).

Adjustment procedure:

1. Switch o the engine.

2. Pull the angle adjustment handgrip (A, Fig.38) and twist
anticlockwise to disengage the mechanism.

3. Rotate the attachment to the position desired, selecting the
appropriate hole in the disc.

4. Release the handgrip and ensure the catch pin engages the hole
(Fig.39).

WARNING – With the pin engaged (having made the
adjustment) the handgrip should come to rest on the
housing as before (Fig.40).

18

40

OPERATION

Cutting techniques

Trim sides of a hedge fi rst, and then the top. Cut slowly, specially

41

with thick hedges. If the hedge needs trimming back hard,
proceed gradually, making a succession of shallow cuts rather than
attempting a single deep cut.
Vertical cut: Use an arcing cut from the bottom upwards, then
downwards, to use both sides of the blades (Fig. 42).
Horizontal cut: In order to get the best cutting results, slightly tilt the
blade (5÷10°) towards the cutting direction (Fig. 43).
Overhead cut: using the attachment hedgetrimmer (Fig.44), elevate
the blade to the required height and cut as appropriate, sweeping left
and right in a wide arc.

en

WARNING! - Do not start the hedge trimmer without the
blade-guard (B, Fig.41). Do not use damaged or
excessively worn blades. If the blade gets jammed, turn
off engine before removing the obstruction.

42

43

Transportation

When you walk with your hedge trimmer, turn off the engine and put
on the blade cover (A, Fig.45). Grip the front handle and keep the
cutter blades behind you (Fig.45).

44

45

19

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MAINTENANCE

Maintenance Chart

Please note that the following maintenance intervals apply for normal operating
conditions only. If your daily work requires longer than normal or harsh cutting
conditions are present the suggested intervals should be shortened accordingly.

Complete Machine Inspect (Leaks, Cracks, and Wear)

Clean

Controls (Ignition Switch, Choke Lever,
Throttle Trigger, Trigger Interlock

Fuel Tank Inspect (Leaks, Cracks, and Wear)

Fuel Filter Inspect (Leaks, Cracks, and Wear)

Blade Inspect

Drum Inspect (Damage, Sharpness, and Wear)

Clutch Inspect (Damage, and Wear)

All Accessible Screws and Nuts (Not
Adjusting Screws

Air Filter Clean

Cylinder Fins Clean

Starter System Vents Clean

Starter Rope Inspect (Damage and Wear)

Carburetor Check ldle (Chain must not rotate at

Spark Plug Check Electrode Gap

Vibration Mounts Inspect (Damage, and Wear)

Check Operation

Clean

Clean

Clean, Replace Filter Element

Sharpen (Check Gauge Depth)

Replace

Inspect

Retighten

Replace

Replace

ldle)

Replace

Replace by Dealer

Weekly

Monthly

As Required

If Damaged or Faulty

Before Each Use

After Each

Refueling Stop

Daily Work

After Finishing

XX

X

XX

XX

X

XX

X

X

Every 6

X

Months

XX

XX

X

X

X

X

XX

Every 6

X

Months

X

X

X

X

XX

X

Every 6

X

Months

X

XX

20

MAINTENANCE

Blade Maintenance

Clean (don’t use grease solvent) any resin and plant residue from the
blades before and after using the machine.

With new blades: after the first working hour you need to inspect the
blades and if necessary adjust the gap between them for a correct
play.

Adjustments (Fig.46): loosen nut (1): slightly tighten screw (2), then

46

unscrew it 1/4 of a turn. Tighten nut (1). Occasionally disassemble and
clean screw and nut (1 and 2).

Sharpening (Fig.47): always keep the file or sharpener at an angle of
45° to the blade, and:

• Always grind in the direction of the cutting edge;

• Files cut only in one direction; lift 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.

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47

WARNING: Do not try to sharpen a damaged blade:
change it or take it to a Service Dealer.

• Check that the blade guard is not damaged or distorted. Replace
the blade guard if it is bent or damaged.

• Never repair damaged cutting attachments by welding,
straightening or modifying the shape.

21

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MAINTENANCE

48

49

50

Carburetor Adjustment

Before adjusting the carburetor, clean the cover vents (Fig. 49) and air
filter (B, Fig. 48), refer to Operation-Starting Unit and Maintenance-Air
Filter Sections for details. Allow the engine to warm up prior to
carburetor adjustment.
This engine is designed and manufactured in order to comply with
EPA (Environmental Protection Agency) Phase 3 regulations.

The carburetor (Fig. 50) is designed to permit only the adjustement
of L and H screws in a range of 1/4 round; the ± 1/8 round the hall
range admissible for L and H screws is determined by the
manufacturer and you can not modify it.

WARNING: Don’t try to force the screws outside the
range!

WARNING: Don’t modify the carburetor in any way in
such case the engine will not run in compliance with
emissions regulations.

Idle Speed Adjustment

• If the engine starts, runs, and accelerates but will not idle; turn the

idle speed screw “T” clockwise to increase idle speed (Fig. 50).

• If the hedge trimmer turns at idle, turn the idle speed screw “T”

counterclockwise to reduce the idle RPM and stop the blade
movement. If the blade still moves at idle speed, contact a Servicing
Dealer for adjustment and discontinue use until the repair is made.

• Screw “L” must be adjusted so that the engine promptly responds

to sharp accelerations and gives good idle operation.

• Screw “H” must be adjusted so that the engine gives maximum

power during the cutting phase.

51

Fuel Filter

Check the fuel filter (Fig. 51) periodically. Replace it if contaminated or
damaged.

CAUTION: Never run the engine without the air filter,
serious damage could result.
Make sure the air fi lter is correctly placed in the air
filter cover before reassembly.
Always replace damaged filters.
Do not clean a filter with a brush.

Air Filter

WARNING: Do not clean filter in gasoline or other
flammable solvent to avoid creating a fire hazard or
producing harmful evaporative emissions.

If a power drop is noticed, check the air filter. Open the air fi lter cover
(A) and check the air filter (B, Fig. 48) each day, change the filter if
heavily clogged or damaged.
Clean with Emak degreaser p/n 001101009A, rinse with water and
blast dry with compressed air, not too close, blowing from the inside
outwards.
Reinstall the air filter into cover. Place the air filter cover onto the
brush cutter. Tighten the air filter cover screw (C) securely.
A used air filter can never be completely cleaned. It is advisable to
replace your air filter with a new one after six month of operation.
Make sure the cover and the support are clean before fitting the new
filter.

22

CMR7H

MAINTENANCE

Starter Unit

Engine

Clean the cylinder fins with compressed air or a brush periodically.
Dangerous overheating of engine may occur due to impurities on the

52

cylinder.

Spark Plug

en

WARNING: The coil spring is under tension and could fly
apart causing serious injuries. Never try to disassemble
or modify it.

WARNING: Never run the machine without all the parts,
including the starting housing, securely in place.
Because parts can fracture and pose a danger of thrown
objects, leave repairs to the flywheel and clutch to
trained Servicing Dealers.

This engine uses a NGK CMR7H with .02” (0.5 mm) electrode gap
(Fig. 52). Use an exact replacement and replace every six months or
more frequently, if necessary.

WARNING: Never test the ignition system with ignition
wire connector removed from spark plug or with
unseated spark plug, since uncontained sparking may
cause a fire. A loose connection between spark plug
terminal and ignition wire connector in the boot may
create arcing that could ignite combustible fumes and
cause a fire.

Use only resistor type spark plugs of the approved range.
Factors such as:

- too much oil in fuel mix;

- dirty air filter;

- unfavourable running conditions, e.g. operating at part load;
may result in rapid deterioration of the spark plug.

Muffler

WARNING! – This muffler is fitted with a catalytic
converter needed for the engine to be in compliance
with the emissions requirements. Never modify or
remove the catalytic converter: failure to do so is a
violation of law.

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!

CAUTION! – If the catalytic converter is damaged it
should be replaced. If the muffler is frequently blocked,
this can be a sign that the performance of the catalytic
converter is impaired.

23

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MAINTENANCE

53

54

55

Spark Arresting Muffler (Fig. 53)

WARNING: A faulty or altered spark arrester system
screen can create a fire hazard.

Through normal use the screen can become dirty and should be
inspected weekly and cleaned as required.
To clean:

• Allow the muffl er to cool.

• Remove the muffl er cover (A).

• Remove the six (6) defl ector screws (B).

• Remove the defl ector (C), the gasket (D) and spark arrester (E).

• Clean and inspect the spark arrester screen. If the spark arrester
screen is damaged, faulty or deteriorated, replace the screen.

• Reassemble components in reversed order of removal and torque
the screw to 40 in/lbs (4.5 Nm).

WARNING: If the spark arrester screen is damaged,
faulty or deteriorated, replace the screen or entire
muffler assembly.

The Spark Arrester System needs a periodic and accurate maintenance
and cleaning, in particular:

- check periodically the spark arrester screen and substitute it when
holes, bends or deformations appear;

- check carefully if dust, debris or organic material is in contact with
parts of the Spark Arrester System; clean it often with tools or shop
air.

If the screen needs to be replaced, please order the whole inner part p.n.
61370017R (E) and 58070144R (D).

WARNING: Do not operate your hedge trimmer if the
muffler is damaged, missing or modified. An improperly
maintained muffler will increase the risk of fire and
hearing loss.

Blade Gearbox

Refill gear housing every 20 working hours (Fig. 54). If necessary, add
15÷20 g grease with molybdenum bisulphide.

Angle Drive

Refill gear housing every 50 working hours (Fig. 55). If necessary, add
5÷10 g grease with molybdenum bisulphide.

24