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CS8001 ENG .pdf


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1

CS-8001

01-81A-00

0

SERVICE DATA
CHAIN SAW

CS-8001
INTRODUCTION
ECHO SERVICE MANUAL Ord. No. 401-17 and
401-17-SUP contains lots of information for
servicing this model.
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.

CONTENTS
page
1 SERVICE INFORMATION ............................ 2
1-1 Specifications ............................................ 2
1-2 Technical data .......................................... 3
1-3 Torque limits ............................................. 4
1-4 Special repairing materials ....................... 4
1-5 Service limits ............................................. 5
1-6 Special tools ............................................. 6

01-81A-00
ISSUED:199806

Reference No.

INDEX

2

SERVICE INFORMATION

CS-8001

1 SERVICE INFORMATION
1-1 Specifications
Dimensions* Length
Width
Height
Dry weight*
Engine
Type

mm(in)
mm(in)
mm(in)
kg(lb)

Rotation
Displacement
Bore
Stroke
Compression ratio
Carburetor Type
Supplier and Model
Venturi size-Throttle bore
Ignition
Type

cm (in )
mm(in)
mm(in)
3

3

mm(in)

Spark plug
Starter
Type
Rope diameter x length mm(in)
Fuel
Type
Tank capacity
cm (US.fl.oz.)
Clutch
Type
Guide bar / Saw chain lubrication type
Tank capacity, oil cm (US.fl.oz.)
Chain brake Type
Sprocket
Type
Number of teeth
Pitch
in
Guide bar Type
for gauge 0.050 in
3

3

420 (16.5)
244 (19.6)
311 (12.2)
7.5 (16.5)
KIORITZ, air-cooled, two-stroke, single cylinder
piston valve, ventilated piston
Clockwise as viewed from the output end
80.7 (4.925)
52.0 (2.047)
38.0 (1.496)
7.3
Diaphragm horizontal-draught
Walbro HDA-63
16.7 - 19.0 (21/32 - 3/4)
CDI (Capacitor discharge ignition) system
in a single integrated piece, with electronic timing advancer
RCJ-6Y
Automatic rewind
4.0 x 900 (0.16 x 35.4)
Premixed two-stroke fuel (Refer to operator's manual.)
820 (27.7)
Centrifugal, 3-shoe slide
Automatic with volume adjuster and manual
400 (13.5)
Inertia-actuated, band brake
Floating rim
7
3/8
40RS50-3/8E1 45RS50-3/8E1 50RS50-3/8E1 55RS50-3/8E1 60RS50-3/8E1
--40S50
45S50
50S50
55S50
60S50
---

--for gauge 0.058 in 40RS58-3/8E 45RS58-3/8E 50RS58-3/8E
40S58
45S58
50S58
--Called length
cm
40
45
50
55
Gauge
in
0.050 / 0.058
Saw chain Number of drive links
60
64
72
78
Pitch
in
3/8
Gauge
in
0.050 / 0.058

*Without guide bar and saw chain.

Gauge

60RS58-3/8E 70RS58-3/8E

60S58
60

70S58
70

84

96

in

0.050

CS-8001

3

SERVICE INFORMATION

1-2 Technical data
Engine
Idling speed
rpm
Operating speed
rpm
High speed (No load full throttle)*
rpm
Clutch-in speed
rpm
Compression pressure
kgf/cm (psi)
Carburetor
Idle speed screw initial setting
turn in
L needle initial setting
turns back
H needle initial setting
turns back
Test pressure, minimum
kgf/cm (psi)
Metering lever height
mm(in)
Ignition system
Spark plug gap
mm(in)
Minimum secondary voltage at 800 rpm kV
Secondary coil resistance
kΩ
Pole shoe air gaps
mm(in)
Ignition timing at operating speed
°BTDC
Chain oil discharge volume at 7000 rpm
cm /min(US.fl.oz./min)
2

2

3

L needle: Idle needle.
H needle: High speed needle.
BTDC: Before top dead center.
*With guide bar and saw chain.

2500 - 2900
7000 - 9500
12000 - 13000
3500 - 4000
10.0 (142)
1 1/2
1 1/4
1
0.5 (7.0)
Flush with diaphragm seat
0.6 - 0.7 (0.024 - 0.028)
15
1.8 - 2.2
0.3 - 0.4 (0.012 - 0.016)
25
1.5 - 15 (0.05 - 0.5) adjustable

4

SERVICE INFORMATION

CS-8001

1-3 Torque limits
Descriptions
Crankcase
Cylinder
Cylinder cover
Carburetor
Carburetor case
Clutch hub
Clutch plate
Flywheel
Ignition coil (CDI module)

Size
M 5
M 6
M 5
M 5
M 5
LM12
M 4
M 8
M 4

Spark plug
Starter pawl
Starter center post screw
Fan cover (starter case)
Muffler
Muffler bracket
Cushion

M14
M 5
M 5*
M 5
M 6
M 5
M 5

Cushion center bolt
Cushion left lower rear
Front handle

M 5
M 5
M 5

Chain brake adjuster
Auto-oiler
Manual oiler
Throttle latch
Guide bar
Regular bolt, nut,
and screw

M 5*
M 4
M 5
M10
M 8
M 3
M 4
M 5
M 6
M 8

kgf•cm
70 - 110
130 - 190
50 - 60
50 - 60
50 - 70
450 - 550
35 - 45
230 - 270
35 - 50

in•lbf
60 - 95
110 - 165
45 - 52
45 - 52
45 - 60
390 - 475
30 - 40
200 - 230
30 - 45

150
70
70
50
140
35
35

130
60
60
45
120
30
30

-

170
110
110
60
160
50
50

70 - 110
30 - 45
70 - 110
30
35
35
6
200
6
15
25
45
110

-

-

150
95
95
52
140
45
45

60 - 95
26 - 40
60 - 95

45
50
60
8
230
10
25
45
75
150

26
30
30
5
175
5
13
22
40
95

-

40
45
52
7
200
9
22
40
65
130

LM: Left-hand thread.
* Apply thread locking sealant. (See below)
1-4 Special repairing materials
Material
Adhesive
Grease

Thread locking sealant

Location
Guide bar stud
Auto-oiler worm
Clutch needle bearing
Cushion, inside
Rewind spring
Starter center shaft
Choke rod (metal contact part)
Throttle rod (metal contact part)
Chain brake (metal contact part)
Starter center post screw
Chain brake adjuster screw

Remarks
Loctite #675 or equivalent

Lithium based grease

Molybdenum grease (approx. 1 gram)
Loctite #222, ThreeBond #1342, or equivalent

CS-8001

5

SERVICE INFORMATION

1-5 Service limits
A

5K171

E

5K082

K

B

C

5K083

D

5K084

F

5K081

G

5K016

H

5K042

L

5K172

M

P

N

1
2
3

5K173

5K175

5K171

5K097

4
5

Description
A Cylinder bore
B Piston outer diameter
C Piston pin bore
D Piston ring groove
E Piston ring side clearance
F Piston pin outer diameter
G Piston ring width
H Piston ring end gap
K Con-rod small end bore
L
Crankshaft runout
M Sprocket bore
N Clutch drum bore
P Rim sprocket wear limit

Min.
Max.
Max.
Max.
Min.
Min.
Max.
Max.
Max.
Max.
Max.
Max.

mm (in)
When plating is worn and aluminum can be seen
51.95 (2.045)
13.027 (0.513)
1.6 (0.063)
0.1 (0.004)
12.98 (0.511)
1.45 (0.057)
0.5 (0.02)
17.025 (0.670)
0.05 (0.002)
18.08 (0.712)
78.0 (3.071)
0.5 (0.02)

6

SERVICE INFORMATION

CS-8001

1-6 Special tools
4

5

6

8

9

10

11

13

14

15 : b = 3 mm
16 : b = 4 mm
17 : b = 5 mm

18: d = 15 mm

1

2 : a = 4 mm
3 : a = 5 mm

7

12

1.
5

4
0.

35
1.

1.
65

a

b

d
19 : c= 14 mm

20

21

22

23

c
Key
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

Part Number
895610-79920
895611-79920
897500-00335
897501-03938
897502-19830
897505-16133
897537-30130
897563-19830

Description
Tachometer
L-hex. wrench(4 mm)
L-hex. wrench(5 mm)
Puller
Puller
Crankcase tool
Clutch tool
Piston stopper
Metering lever gauge

Used for:
Measuring engine speed
Removing and installing hex. socket bolt (M5)
Removing and installing hex. socket bolt (M6)
Removing auto-oiler worm cover
Removing flywheel
Separating crankcase
Removing and installing clutch assembly
Locking crankshaft rotation
Measuring metering lever height on carburetor

897701-14732
897702-30131
897708-19834
897708-37532
897719-02830
897724-01261
897724-01361
897724-02831
897726-21430
897727-30830
897740-19830
897800-79931
897803-30130
897827-16131

Bearing tool
Piston pin tool
Worm remover
Worm inserter
Piston holder
Spring pin tool
Spring pin tool
Spring pin tool
Oil seal tool
Oil seal tool
Cushion tool
Spark tester
Pressure tester
Pressure plate

Removing and installing crankcase ball bearings
Removing and installing piston pin (Use 10 mm dia. adapter)
Removing auto-oiler worm
Installing auto-oiler worm
Making piston steady to remove and install piston / rings
Removing and installing spring pin (3 mm dia.)
Removing and installing spring pin (4 mm dia.)
Removing and installing spring pin (5 mm dia.)
Installing starter side oil seal
Installing clutch side oil seal
Removing and installing cushion (Right-Rear-Upper)
Checking ignition system
Testing crankcase and carburetor leakages
Plugging intake port to test crankcase and cylinder leakages


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