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