Echo CS-3050 User Manual
0
INTRODUCTION
We are constantly working on technical
improvement of our products. For this reason,
technical data, equipment and design are subject to
change without notice. All specifications,
illustrations and directions in this SERVICE DATA
are based on the latest products information
available at the time of publication.
For further information to service these models,
please refer to ECHO SERVICE MANUAL Ord. No.
401-20.
CHAIN SAW
CS-3000 CS-3050
CS-3400 CS-3450
SERVICE DATA
1
00-30A-03 CS-3000 CS-3050 CS-3400 CS-3450
CONTENTS
page
1 SERVICE INFORMATION ............................ 2
1-1 Specifications ............................................ 2
1-2 Technical data .......................................... 3
1-3 Carburetor data ......................................... 3
1-4 Torque limits ............................................. 4
1-5 Special repairing materials ....................... 4
1-6 Service limits ............................................. 5
1-7 Special tools ............................................. 6
2 SERVICE HINT ............................................. 7
2-1 Installing fuel pipes and grommet ............. 7
2-2 Installing new oil pipe and grommet ......... 7
2-3 Checking reed valve ................................. 8
2-4 Replacing brake lever fasteners ............... 8
Reference No. 00-30A-03
REVISED : 199902
Issued:199204
Remarks:
Please use this revised edition (Reference No. 00-30A-03)
and discard all previous issues.
Printed in Japan
INDEX
2
SERVICE INFORMATION
CS-3000 CS-3050
CS-3400 CS-3450
1 SERVICE INFORMATION
1-1 Specifications
*Without guide bar and saw chain. Gauge in 0.050
Cutting devices North America
Guide bar Type 12A0CD3745 14A0CD3752 16A0CD3757
Called length in 12 14 16
Gauge in 0.050
Saw chain Type 91SG-45X 91SG-52X 91SG-57X
Pitch in 3/8 Low profile
Gauge in 0.050
Cutting devices Other than North America
Guide bar Type 30RC50-3/8 35RC50-3/8 40RC50-3/8
Called length cm 30 35 40
Gauge in 0.050
Saw chain Number of drive links 47 53 58
Pitch in 3/8 Low profile
Gauge in 0.050
Model CS-3000 CS-3050 CS-3400 CS-3450
Dimensions Length* mm(in) 260 (10.2) 380 (15.0) 260 (10.2) 380 (15.0)
Width mm(in) 230 (9.1) 230 (9.1) 230 (9.1) 230 (9.1)
Height mm(in) 220 (8.7) 245 (9.6) 220 (8.7) 245 (9.6)
Dry weight* kg(lb) 3.2 (7.1) 3.3 (7.3) 3.3 (7.3) 3.4 (7.5)
Engine Type KIORITZ, air-cooled, two-stroke, single cylinder
Two-piece casting, Reed valve
Rotation Clockwise as viewed from the output (PTO) end
Displacement cm
3
(in3) 30.1 (1.836) 33.4 (2.037)
Bore mm(in) 37.0 (1.457) 39.0 (1.535)
Stroke mm(in) 28.0 (1.102) 28.0 (1.102)
Compression ratio 7.0 : 1 7.0 : 1
Carburetor Type Diaphragm (Walbro WT type)
Ignition Type CDI (Capacitor discharge ignition) system
in a single integrated piece
Spark plug BPMR7A, BPM7A, CJ-7Y
Starter Type Automatic rewind
Rope diameter x length mm(in) 3.0 x 850 (0.12 x 33.5)
Fuel Type Premixed two-stroke fuel (Refer to operator's manual.)
Tank capacity cm
3
(U.S.fl.oz.) 250 (8.5)
Clutch Type Centrifugal, 3-shoe slide
Guide bar / Saw chain lubrication type Automatic with volume adjuster
Tank capacity, oil cm3(U.S.fl.oz.) 150 (5.0)
Handles Location Front / Top Front / Rear Front / Top Front / Rear
Sprocket Type Spur
Number of teeth 6
Pitch in 3/8
3
SERVICE INFORMATION
CS-3000 CS-3050
CS-3400 CS-3450
1-2 Technical data
BTDC: Before top dead center.
*With guide bar and saw chain.
Model CS-3000 CS-3050 CS-3400 CS-3450
Engine
Idling speed rpm 2700 - 3300
Operating speed rpm 6500 - 9000
High speed (No load full throttle)* rpm 11000 - 12000
Clutch-in speed rpm 4100 - 4300
Compression pressure, standard kgf/cm2(psi) 8 (115)
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage kV 15
Secondary coil resistance kΩ ( 1.0 - 1.5 ) 1.2 - 1.8 ( 1.0 - 1.5 ) 1.2 - 1.8
Pole shoe air gaps mm(in) 0.3 - 0.4 (0.012 - 0.016) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 1500 rpm °BTDC ( 27 ) 29 ( 27 ) 11 15
Ignition timing at 3000 rpm °BTDC ( 27 ) 29 ( 27 ) 12.5 16.5
Ignition timing at 7500 rpm °BTDC ( 27 ) 29 ( 27 ) 26 30
Chain oil discharge volume at 7000 rpm
cm
3
/min(U.S.fl.oz./min) 1.5 - 13 (0.05 - 0.45) adjustable
Carburetor Model WT-248 WT-254 WT-261 WT-271 WT-381 WT-385 WT-385A
Supplier & Type Walbro Diaphragm horizontal-draught
Venturi Size mm(in) 9.53 (3/8) 11.11(3/8) 9.53(3/8)
Throttle Bore mm(in) 15.85(5/8) 15.85(5/8) 14.3 (9/16)
Idle speed screw initial setting turn in
22 2
H needle initial setting turn back 1 1/4 1 1/8 1 1/4
L needle initial setting turn back 1 1/4 1 1/8 1
Test Pressure, minimum kgf/cm2(psi)
0.5 (7.0)
Metering lever height mm(in) 1.65 ((0.65) lower than diaphragm seat
Applicable model CS-3000 CS-3050 CS-3450 CS-3400 CS-3050 CS-3000 CS-3000
CS-3450 CS-3400 CS-3050
CS-3400
CS-3450
H needle: High speed needle.
L needle: Idle needle.
1-3 Carburetor data
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