Echo CS-4910 User manual

X7503314200
© 09/20 ECHO Incorporated
Operator’s
Manual
CS-4910
Chain Saw
The engine exhaust from this product contains chemicals known to
the State of California to cause cancer, birth defects, or other
reproductive harm.
Read and understand all provided literature before use.
Failure to do so could result in serious injury.
1RWH7KLVSURGXFWFRPSOLHVZLWK&$1,&(610%
ECHO INCORPORATED
2DNZRRG5RDG
/DNH=XULFK,/
www.echo-usa.com
&&

TABLE OF CONTENTS CS-4910
2 X7503314200
(&+2,QFRUSRUDWHG
TABLE OF CONTENTS
,QWURGXFWLRQ
6HUYLFLQJ,QIRUPDWLRQ
3DUWV6HULDO1XPEHU
6HUYLFH 
(&+2&RQVXPHU3URGXFW6XSSRUW 
3URGXFW5HJLVWUDWLRQ
$GGLWLRQDO/LWHUDWXUH 
3DFNLQJ/LVW
6DIHW\ 
5XOHV)RU6DIH2SHUDWLRQ 
&RUUHFW8VH2I&KDLQ%UDNH 
3HUVRQDO&RQGLWLRQDQG6DIHW\(TXLSPHQW 
,QWHUQDWLRQDO6\PEROV
0DQXDO6DIHW\6\PEROVDQG,PSRUWDQW,QIRUPDWLRQ 
(PLVVLRQ&RQWURO([KDXVW(YDSRUDWLYH 
&$5%$QG(3$(PLVVLRQV&RQWURO,QIRUPDWLRQ 
'HVFULSWLRQ 
3UHSDUDWLRQ)RU8VH
2SHUDWLRQ
)XHO 
&KDLQ/XEULFDQW 
6WDUWLQJ&ROG(QJLQH 
6WDUWLQJ:DUP(QJLQH 
5XQQLQJ
6WRSSLQJ 
&KHFNLQJ&KDLQ7HQVLRQ 
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.LFN*XDUG70 
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6DZ&KDLQ
0DLQWHQDQFH
6NLOO/HYHOV 
0DLQWHQDQFH,QWHUYDOV 
&DUEXUHWRU$GMXVWPHQW 
$LU)LOWHU
6SDUN3OXJ
&KHFN)XHO6\VWHP 
)XHO)LOWHU 
$XWRPDWLF2LOHU
2LO)LOWHU
*XLGH%DU 
6SURFNHW 
&RROLQJ6\VWHP&OHDQLQJ
6SDUN$UUHVWRU0XIIOHU 
6SDUN$UUHVWRU6FUHHQ
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CS-4910 REMARQUES
X7503314200 63
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REMARQUES

CS-4910 INTRODUCTION
X7503314200 3
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INTRODUCTION
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Parts/Serial Number
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PACKING LIST CS-4910
4 X7503314200
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Service
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ECHO Consumer Product Support
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PACKING LIST
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CS-4910 SAFETY
X7503314200 5
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SAFETY
Rules For Safe Operation
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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.
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SAFETY CS-4910
6 X7503314200
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Correct Use Of Chain Brake
Chain Brake Operation
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CS-4910 SAFETY
X7503314200 7
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Do not allow the saw to tip forward in order to avoid damage to the
chain.
If the chain does not stop immediately, return the saw to your
authorized dealer for repair.
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SAFETY CS-4910
8 X7503314200
(&+2,QFRUSRUDWHG
ANSI Standard B175.1 and
CSA Z62.1.3 stipulate 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 here
in order to ensure that the
brake performance is
maintained in compliance with
the Standards B175.1 and CSA
Z62.1.3
Automatic Chain Brake
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When checking the operation of the automatic chain brake, use a soft
surface substance like wood to absorb the impact so the chain is not
damaged.
FP
LQ

CS-4910 SAFETY
X7503314200 9
(&+2,QFRUSRUDWHG
Other Safety Precautions
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SAFETY CS-4910
10 X7503314200
(&+2,QFRUSRUDWHG
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Chain saws shall be used in accordance with the operating
instructions and safety precautions listed in the operator's
manual(s). It shall be the responsibility of the owner to see that
such instructions and precautions are given to every operator
who uses the saw.
During operation, the muffler or catalytic muffler and
surrounding cover become hot.
Never suspend the saw on a lanyard with the engine
running.
Always use the saw from the right-hand side of your body –
NEVER from the left side.
Always wear proper safety clothing to protect your lower
body from sharp saw chain and hot muffler.
Always keep exhaust area clear of flammable debris during
transportation or when storing, otherwise serious property
damage or personal injury may result.

CS-4910 SAFETY
X7503314200 11
(&+2,QFRUSRUDWHG
Moving parts can amputate fingers or cause severe injuries.
Keep hands, clothing and loose objects away from all openings.
ALWAYS stop engine, disconnect spark plug, and make
sure all moving parts have come to a complete stop before
removing obstructions, clearing debris, or servicing unit.
DO NOT start or operate unit unless all guards and
protective covers are properly assembled to unit.
NEVER reach into any opening while the engine is running.
Moving parts may not be visible through openings.
Using improper replacement components or removing safety
devices may result in serious or fatal injury.
Unit includes safety devices that reduce the likelihood of
kickback:
◆Chain brake - brake actuated by kickback energy, not
manual activation.
◆Reduced-kickback guide bar - reduced nose radius guide
bar.
◆Low-kickback saw chain - saw chain that meets ANSI
kickback performance requirements when configured with
the bar/chain recommendations in this manual.
◆Front hand guard - a structural barrier between the front
handle of a chain saw and the guide bar.
Periodically Check fuel system (fuel lines, vent, grommet, fuel
tank, and fuel cap) for leaks especially if the unit is dropped. If
damage or leaks are found, do not use unit, otherwise serious
personal injury or property damage may occur. Have unit
repaired by an authorized servicing dealer before using.

SAFETY CS-4910
12 X7503314200
(&+2,QFRUSRUDWHG
Personal Condition and Safety Equipment
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
The muffler or catalytic muffler and surrounding cover
may become extremely hot. Always keep clear of
exhaust and muffler area, otherwise serious personal
injury might occur.
Users of this product risk injury to themselves and others if the
unit is used improperly and/or safety precautions are not
followed. Proper clothing and safety gear must be worn when
operating unit.
Physical Condition
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Eye Protection
◆Eye protection that meets ANSI Z87.1 or CE requirements
must be worn whenever you operate the unit.
◆For additional safety, a full-face shield can be worn over
safety glasses or goggles to provide protection from sharp
branches or flying debris.

CS-4910 SAFETY
X7503314200 13
(&+2,QFRUSRUDWHG
Hand Protection
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Hearing/Ear Protection
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Breathing Protection
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Proper Clothing
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SAFETY CS-4910
14 X7503314200
(&+2,QFRUSRUDWHG
The components of this machine generate an electromagnetic
field during operation, which can interfere with some
pacemakers. To reduce the risk of serious or fatal injury,
persons with pacemakers should consult with their physician
and the pacemaker manufacturer before operating this
machine. In the absence of such information, ECHO does not
recommend the use of this machine by anyone who has a
pacemaker.
Extended Operation / Extreme Conditions
Prolonged exposure to cold and/or vibration can result in injury.
Read and follow all safety and operation instructions to
minimize risk of injury. Failure to follow instructions can result
in painful wrist/hand/arm injuries.
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CS-4910 SAFETY
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Repetitive Stress Injuries (RSI)
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All over head electrical conductors and communications wires
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insulated against electrical current. Never touch wires directly
or indirectly, otherwise serious injury or death can result.
Do not operate this product indoors or in inadequately
ventilated areas. Engine exhaust contains poisonous emissions
and can cause serious injury or death.

SAFETY CS-4910
16 X7503314200
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Symbol Description Symbol Description
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CS-4910 SAFETY
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Symbol Description Symbol Description
STOP
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SAFETY CS-4910
18 X7503314200
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Manual Safety Symbols and Important Information
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The safety alert symbol accompanied by the word “DANGER”
calls attention to an act or condition which WILL lead to serious
personal injury or death if not avoided.
The safety alert symbol accompanied by the word “WARNING”
calls attention to an act or condition which CAN lead to serious
personal injury or death if not avoided.
The safety alert symbol accompanied by the word “CAUTION”
calls attention to an act or condition which might lead to minor
or moderate personal injury if not avoided.
The enclosed message provides information necessary for the
protection of the unit.
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CS-4910 EMISSION CONTROL
X7503314200 19
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EMISSION CONTROL (EXHAUST &
EVAPORATIVE)
CARB And EPA Emissions Control Information
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An Emission Control LabelLV
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Product Emission Durability
(Emission Compliance
Period)
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DESCRIPTION CS-4910
20 X7503314200
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DESCRIPTION
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