Echo CS-3000 TYPE 1E Mounting instructions

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

2SERVICE 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 cm3(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 cm3(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
cm3/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/cm
2
(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

1-4 Torque limits
Descriptions Size kgf•cm in•lbf
Crankcase M 5 30 - 40 25 - 35
Engine mount M 5 80 - 90 70 - 80
Carburetor M 5 35 - 45 30 - 40
Insulator M 5 40 - 50 35 - 45
Reed valve M 3 08 - 12 07 - 10
Clutch hub LM 8 200 - 230 175 - 200
Flywheel M 8 120 - 140 105 - 120
Ignition coil (CDI module) M 5† 30 - 40 25 - 35
Ignition switch M10 20 - 30 17 - 25
Spark plug M14 150 - 170 130 - 150
Starter pawl M 5† 30 - 40 25 - 35
Starter case M 4* 25 - 35 20 - 30
Muffler M 5 60 - 70 50 - 60
Isolator Front M 4* 20 - 30 17 - 25
M 5 35 - 45 30 - 40
Rear M 4 25 - 35 20 - 30
Auto-oiler M 5 30 - 40 25 - 35
Throttle latch M10 6 - 8 5 - 7
Front handle top M 5 30 - 40 25 - 35
Brake lever** (hand guard) M 5 30 - 40 25 - 35
Guide bar M 6 090 - 110 80 - 95
Regular bolt, nut, M 3 06 - 10 5 - 9
and screw M 4 15 - 25 13 - 22
M 5 25 - 45 22 - 40
M 6 45 - 75 40 - 65
Material Location Remarks
Adhesive Ball bearing outer / crankcase Loctite Retaining Compound #675 or equivalent
Oil pipe grommet Loctite Instant Adhesive #424 or equivalent
Grease Auto-oiler worm
Clutch needle bearing Lithium based grease
Rewind spring
Brake band seal
Chain brake (metal contact part) Molybdenum grease (approx. 1 gram)
Liquid gasket Crankcase seams Loctite #518 or equivalent
Thread locking Starter pawl screws Loctite #222 or equivalent
sealant Ignition coil (CDI module) screws
Auto-oiler screw
1-5 Special repairing materials
LM: Left-hand thread.
* Tapping screw.
** See "2-4 Replacing brake lever fasteners" on page 8.
† Apply thread locking sealant.
4SERVICE INFORMATION CS-3000 CS-3050
CS-3400 CS-3450

1-6 Service limits
5K177 5K040B 5K025B 5K038B
5K043B 5K016 5K042 5K178
5K173 5K174 5K190 5K191
123
ABCD
EFGH
KLMP
N
Model CS-3000 CS-3050 CS-3400 CS-3450
A Cylinder bore When plating is worn and aluminum can be seen
B Piston outer diameter mm(in) Min. 36.91 (1.453) 38.91 (1.532)
C Piston pin bore mm(in) Max. 8.030 (0.3161)
D Piston ring groove mm(in) Max. 1.3 (0.051) 1.6 (0.063)
E Piston ring side clearance mm(in) Max. 0.15 (0.006) 0.1 (0.004)
F Piston pin outer diameter mm(in) Min. 7.98 (0.3142)
G Piston ring width mm(in) Min. 1.15 (0.045) 1.45 (0.571)
H Piston ring end gap mm(in) Max. 0.5 (0.02)
K Con-rod small end bore mm(in) Max. 11.025 (0.4341)
L Crankshaft runout mm(in) Max. 0.05 (0.002)
M Sprocket bore mm(in) Max. 13.08 (0.5150)
N Clutch drum bore mm(in) Max. 61.0 (2.40)
P Sprocket wear limit mm(in) Max. 0.5 (0.02)
5
SERVICE INFORMATION
CS-3000 CS-3050
CS-3400 CS-3450

1-7 Special tools
1.35
0.4
1.65
1.5
1
5
9
13
2
6
10
14 15 16 17 18
3
7
11
4
8
12
Key Part Number Description Used for:
1 Tachometer Measuring engine speed to adjust carburetor
2 895610-79920 L-hex. wrench (4 mm) Removing and installing hex. socket bolt (M5)
3 897501-03938 Puller Removing flywheel
4 897505-16133 Clutch tool Removing and installing clutch assembly
5 897537-30130 Piston stopper Locking crankshaft rotation
6 897563-19830 Metering lever gauge Measuring metering lever height on carburetor
7 897701-02830 Bearing wedge Removing crankshaft ball bearings
8 897702-30131 Piston pin tool Removing and installing piston pin (Use 8 mm dia. adapter.)
9 897708-19834 Worm remover Removing worm of auto-oiler
10 897708-37532 Worm inserter Installing worm of auto-oiler (Use smallest adapter.)
11 897724-01361 Spring pin tool Removing and installing spring pin (4 mm or 5/32 in dia.)
12 897726-09130 Oil seal tool Installing ball bearings on crankshaft
13 897800-79931 Spark tester Checking ignition system
14 897803-30130 Pressure tester Testing carburetor and crankcase leakages
15 897826-16131 Pressure plug Plugging intake port to test crankcase / cylinder leakages
16 897827-16131 Pressure plate Plugging intake port to test crankcase / cylinder leakages
17 897828-12330 Pressure plug Plugging exhaust port to test crankcase / cylinder leakages
18 897835-16131 Pressure connector Testing crankcase and cylinder leakages
6SERVICE INFORMATION CS-3000 CS-3050
CS-3400 CS-3450

7
SERVICE HINT
CS-3000 CS-3050
CS-3400 CS-3450
2 SERVICE HINT
2-1 Installing fuel pipes and grommet
1. Preassemble fuel return pipe (A), fuel pipe (B),
and vent pipe (C) to the grommet as shown .
(D): 5 mm (0.2 in)
(E): 23 mm (0.9 in)
(F): 5 mm (0.2 in)
2. Install the grommet together with pipes so that
vent pipe (C) faces rear (engine side).
2K311
(A)
(D)
(E)
(F)
(B) (C)
2K310
1. Insert new oil pipe to the grommet as shown.
(A): 62 to 68 mm (2.45 to 2.65 in)
2. Apply an adhesive (Loctite #424 or equivalent
adhesive for synthetic rubber) on the grommet bore.
(A)
6K270
2-2 Installing new oil pipe and grommet

8SERVICE HINT CS-3000 CS-3050
CS-3400 CS-3450
2-3 Checking reed valve
2-4 Replacing brake lever fasteners
1. Check reed valve for damage, crack, or warp, or
if it lifts off from insulator.
2. If the lift is (A) more than 0.3 mm (0.012 in),
remove two screws to clean dust or dirt under reed
valve.
3. Retighten two screws securing reed valve and the
retainer to 8 to 12 kgf•cm (7 to 10 in•lb).
4. Replace insulator and reed valve as a set if
defective.
2K312
(A)
NOTE: Always use two spacers (A), screw (B),
and lock nut (C) to secure brake lever even if
other type fasteners are originally used.
1. Insert two spacers (A) to both side of brake lever
pivot part respectively.
2. Insert screw (B) through the spacers and
sprocket guard.
3. Tighten the screw with lock nut (C).
NOTE: Fastening torque should be 30 to 40 kgf•cm
(25 to 35 in•lbf).
(C) 900560-00005
(B) 900209-05030(A) 433167-39130
6K271