Read Rules for Safe Operation
and Instruction Carefully
X750-001 74 0
X750 319-450 0
RULES FOR SAFE OPERATION
1. Fatigue causes carelessness. Be more
cautious before rest periods and before
the end of your shift.
2. Personal protective clothing required by
your safety organizations, government
regulations, or your employer should be
used; otherwise , sung fitting clothing, protective eye wear, saf ety footwear and hand,
leg and hearing protection should be worn.
Note: Personal protective clothing
should meet the requirements
of applicable Standards.
3. Before fuelling, servicing or transporting
your chain saw switch off the engine. To
help prevent fire, restart your chain saw
at least 3 m (10 ft) from the fuelling area.
4. When using a chain saw a fire extinguisher
should be available.
5. When felling, keep at least 2 tree lengths
between yourself and your f ellow workers.
6. Plan your work; assure yourself of an obstacle-free work area and, in the case of
felling, of an escape path from the falling
tree.
7. Follow instructions in your operator’s
manual for starting the chain saw and control the chain saw with a film grip on both
handles when it is in operation. A keep
handles dry , clean and free of oil. A chain
saw should never be carried with the engine running.
8. When transporting your chain saw , use the
appropriate transportation covers that
should be available for the guide bar and
saw chain.
9. Never operate a chain saw that is damaged, improperly adjusted, or is not completely and securely assembled. Be sure
that the saw chain stops moving when the
throttle control trigger is released. Never
adjust the guide bar or saw chain when
the engine operating.
10.Beware of carton monoxide poisoning. Operate the chain saw in well-ventilated areas only.
11.Do not attempt a pruning or liming operation in a standing tree unless specifically
trained to do so.
12. Guard against kickback. Kickback is the
upward motion of the guide bar , which occurs when the saw chain, at the nose of
the guide bar, contact an object. Kic kback
can lead to dangerous loss of the chain
saw.
TO AVOID KICKBA CK:
(a) Contact of the guide bar tip with any
object should be avoided.
(b) Tip contact may cause the guide bar
to move suddenly upward and backward which may cause serious injury.
(c) Always use two hands when operat-
ing the chain saw .
(d) Use a firm grip, thumbs and fingers
encircling the handles.
(e) Don’t overreach.
(f) Avoid cutting above shoulder height.
(g) Follow the manufacture’s instructions
for sharpening and maintenance of the
saw chain.
13.When boring with the chain saw, the initial cut should be introduced with the lower
part of the nose (tip) until the hole is sufficiently large so as to introduce the entire
nose (tip) of the guide bar. This manoeuve
should reduce the danger of kickback.
14. A chain saw is intended for two-handed
use. Serious injury to the operator, helpers and/or bystanders may result from
one-handed operation.
CAUTION
A. Allow your chain saw to cool before refu-
eling, and do not smoke.
B. Do not allow other persons or animals
close to running chain saw or close to
where a tree is being felled.
C. Use extreme caution when cutting small
size brush and saplings because slender
material may catch the saw chain and be
whipped toward you.
D. When cutting a limb that is under tension
is alert for spring-back.
CS-510
2
CONTENTS
RULES FOR SAFE OPERATION ................................................................................. 2
NOMENCLATURE HAVE PARTS ................................................................................ 4
STORAGE AFTER USE.............................................................................................. 25
TECHNICAL DATA ..................................................................................................... 25
This spark ignition system complies with Canadian ICES-002.
3
CS-510
NOMENCLATURE HAVE PARTS
7
8
6
5
9
10
11
4
14
13
12
15
21
20
19
16
17
1
18
2
3
CS-510
4
NOMENCLATURE HAVE PARTS
1. Operator’s manual - Included with unit.
Read before operation and keep for future
reference to learn proper, safe operating
techniques.
2. Installation and use KICK GUARD Describe how to install the kick guard and
operate the saw with kick guard.
3. Safety manual - Describe operating and safety
instructions for this chain saw.
4. Front hand guard - Guard between the front
handle and the saw chain for protecting the
hand from injuries and aiding in control of the
chain saw if the hand slips off the handle.
This guard is used to activate the chain
brake which is to stop the saw chain rotation.
5. Air cleaner cover - Covers air filter.
6. Rear handle (for the right hand) - Support
handle located towards the rear of the
engine housing.
7. Choke control knob - Device for enriching the
fuel/air mixture in the carburettor to aid cold
starting.
8. Rear hand guard - Extension on the lower part
of the rear handle for protecting the hand
from the chain if it breaks or degrooves.
9. Clutch cover - Protective cover to the guide
bar, saw chain, clutch and sprocket when the
chain saw in use.
10. Chain catcher - A safety projection designed
to reduce the risk of the operator’s right hand
from being hit by a chain which has broken
or derailed from the guide bar during cutting.
11. Guide bar - The part that supports and guide
the saw chain.
12. Bar tip guard - Anti-kickback device attached
on the bar nose.
13. Saw chain - Chain, serving as a cutting tool.
14. Spiked bumper - Device, fitted in front of the
guide bar mounting point, acting as a pivot
when in contact with a tree or log.
15. Front handle ( for the left hand ) - Support
handle located at the front of the engine
housing.
16. Oil tank cap - For closing the oil tank.
17. Fuel tank cap - For closing the fuel tank.
18. Throttle trigger - Device activated by the
operator’s finger, for controlling the engine
speed.
19. Throttle trigger lockout - A safety lever which
must be depressed before the throttle trigger
can be activated in order to prevents the
accidental operation of the throttle trigger.
20. Ignition switch - Device for connecting and
disconnecting the ignition system and thus
allowing the engine to be started or stopped.
21. Starter handle - Pull handle slowly until starter
engages then quickly and firmly. When
engine starts, return handle slowly.
DO NOT let handle snap back or damage to
unit will occur.
5
CS-510
OPERATOR SAFETY
HOT HUMID WEATHER
• Heavy protective clothing can increase
operator fatigue which may lead to heat
stroke.
Schedule heavy work for early morning, or late
afternoon hours when temperatures are cooler.
VIBRATION AND COLD
• It is believed that a condition called
Raynaud’s Phenomenon, which affects the
fingers of certain individuals, may be brought
about by exposure to vibration and cold.
Exposure to vibration and cold may cause
tingling and burning followed by loss of color and
numbness in the fingers.
The following precautions are strongly
recommended because the minimum exposure
which might trigger the ailment is unknown.
• Keep your body warm, especially the head and
neck, feet and ankles and hands and wrists.
• Maintain good blood circulation by performing
vigorous arm exercises during frequent work
breaks and also by not smoking.
• Limit the number of hours of operation.
Try to fill each day with jobs where operating the
chain saw, or other hand-held power equipment
is not required.
• If you experience discomfort redness and
swelling of the fingers, followed by whitening and
loss of feeling, consult your physician before
further exposing yourself to cold and vibration.
REPETITIVE STRESS INJURY
• It is believed that overusing the muscles and
tendons of the finger, hands, arms and
shoulders may cause soreness, swelling,
numbness, weakness and extreme pain to the
areas just mentioned.
Certain repetitive hand activities may put you at
a high risk for developing a repetitive stress
injury (RSI).
• An extreme RSI condition is Carpal Tunnel
Syndrome (CTS) which could occur when your
wrist swells and squeezes a vital nerve that runs
through the area. Some believe that prolonged
exposure to vibration may contribute to CTS.
CTS can cause severe pain for months or even
years.
To reduce the risk of RSI/CTS, do the following:
• Avoid using your wrist in a bent, extended or
twisted position.
• Take periodic breaks to minimize repetition and
rest your hands.
• Reduce the speed and force in which you do the
repetitive movement.
• Do exercises to strengthen hand and arm
muscles.
• See a doctor if you feet tingling, numbness or
pain in your fingers, hands, wrists or arms.
The sooner RSI/CTS is diagnosed, the more
likely permanent nerve and muscle damage can
be prevented.
EYE AND HEARING PROTECTION
• Wear eye protection goggles that meet ANSI
Z 87.1 requirements.
Goggles meeting the requirements have the
mark “Z 87” stamped on them.
• Wear hearing protection.
If this guideline is not followed, hearing loss can
occur.
The Occupational Health and Safety Act of 1970
(OHSA) requires the use of hearing protection if
you use the unit more than two hours per day.
ECHO recommends wearing hearing protection
at all times.
WEAR PROPER CLOTHING
• Snug fitting durable clothing should be worn.
Pants should have long legs, DO NOT WEAR
SHORTS.
Do not wear loose fitting clothing, scarves,
neckties, jewelry or any item that may become
tangled in surrounding growth or the trimmer
itself.
• Wear shoes with non-skid soles.
DO NOT wear open toed shoes or operate unit
barefooted.
• Wear no-slip, heavy duty work gloves to improve
your grip on the trimmer handles.
The gloves also help reduce the transmission of
machine vibration to your hands.
Special vibration reducing gloves such as
ECHO’s PRO-COMFORT are designed to
provide additional comfort.
CS-510
6
SPARK ARRESTOR MUFFLER
• The spark arrestor muffler controls the exhaust
noise and prevents hot, glowing particles of
carbon from leaving the muffler.
Make sure the spark arrestor screen is in good
repair and properly seated in the muffler.
• Certain internal combustion engines operated on
forest, brush, and/or grass-covered areas in the
states of Washington, Oregon, Idaho, California
Minnesota, New Jersey and Maine, are required
to be equipped with a spark arrestor.
CORRECT USE OF CHAIN BRAKE
This requirement also applies to all U.S. Forest
Service lands.
In some of these areas, the spark arrestor
system must be certified per USDA Forest
Service Regulation SAE J 335.
Check with your local or state authorities for
specific regulations in your area.
Failure to follow these requirements is a violation
of the law.
Chain moving downward at impact
Liner kickback
kickback
Rotational kickback
Reduced radius
belongs on top
Rotational kickback
Pinch
WARNING DANGER
KICKBACK SAFETY PRECAUTION FOR
CHAIN SAW USERS KICKBACK MAY OCCUR
WHEN THE NOSE OR TIP OF THE GUIDE
BAR TOUCHES AN OBJECT OR WHEN THE
WOOD CLOSES IN AND PINCHES THE SAW
CHAIN IN THE CUT.
The installation of a chain brake may be mandatory
by law or as stipulated by insurance regulations in
your area of operation.
You should inquire through local government
offices, your employer or your local dealer to
ensure that your chain saw conforms to the
required safety standard.
ECHO chain brakes have been designed and
tested to comply with international safety standards
as follows.
Canada : CSA Standard Z 62.1,
Standard Z 62.3 CHAIN SAWS
USA: ANSI Standard B175.1-2000
Safety Requirement for chain saws
WARNING DANGER
CSA Z 62.1 STIPULATES THAT THE BRAKE
SHALL STOP THE CHAIN 0.12 SECONDS AT
AN ENGINE SPEED OF 13,500 r/min.
IT IS THE RESPONSIBILITY OF THE OWNER /
OPERATOR TO ENSURE THAT THE BRAKE
IS SERVICED, ADJUSTED AND TESTED
STRICTLY IN ACCORDANCE WITH THE
INSTRUCTIONS AS DETAILED HEREIN IN
ORDER TO ENSURE THAT THE BRAKE
PERFORMANCE IS MAINTAINED IN
COMPLIANCE WITH THE STANDARD
CSA Z 62.1.
7
CS-510
Clutch cover
PREPARATION FOR USE
CAUTION
• All adjustment, should be made cold.
• Always wear glov es when working on chain.
MOUNTING GUIDE BAR AND
Bar hole
CHAIN
• Unscrew two nuts and remov e clutch co v er .
• Install the spiked bumper on the front of
machine. (Use two bolts 5×12)
Spiked bumper
Adjusting screw
Proper tension
Improper tension
Two bolts 5×12
• Mount bar and slide toward clutch to make saw
chain installation easier.
• Install saw chain as shown.
(Ensure cutters are pointing in the right direction)
• Install the clutch cover tighten nuts finger tight.
Ensure that chain tension adjuster fits into bar
hole.
NOTE
Ensure that the chain is installed with the cutters
directed forward on the top of the bar.
ADJUSTMENT, CHAIN TENSION
• Hold the bar nose up and turn the adjuster
clockwise until the chain fits snugly against the
underside of the bar.
• Tighten both nuts with the bar nose held up.
• Start the engine and run at low speed.
Stop and readjust if necessary .
CS-510
8
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