SERVICE
IVIANUAL
.
I
CS-440EVL CS-510EVL
CS·550EVL CS-660EVL
SERVICE
INFORMATION 1
1. SERVICE
INFORMATION
1·1 Specifications
Models
CS-440EVL
S-510EVL
CS-550EVL
CS-660EVL
length*
mm (in)
385 (15.2)
00 (15.7) 400 (15.7) 420
(16.5)
Dimensions
width
mm (in)
250 ( 9.8) 255 (10.0)
255 (10.0)
260
(10.2)
height
mm(in)
270 (10.6) 280 ( 11.0)
280 (11.0) 280
(11.0)
Dry
weight*
kg (lb)
5.1
(
11.2) 6.0 (13.2)
6.0 (13.2)
6.5
(14.3)
type
KIORITZ,
air-co
,
led,
two-stroke,
single
cylinder,
piston-ported
rotation
Clockwise
rotation
as
v1ewed
from the
output end
displacement cc (cu.in)
44.3 (2.703) 9.9 (3.045)
54.7 (3.340) 64.2
(3.918)
Engine
bore
mm (in)
42.0
(
1.654) 2.0 (1.654)
44.0 (1.732) 47.0
( 1.850
)
stroke
mm (in)
32.0
(
1. 260)
6.0
(1.417) 36.0 (1.417) 37.0
(1.457)
compression ratio
7.0 7.8 7.8
7.8
Carburetor
Diaphragr type with adjustable fuel
mixture jets
type
CDI CDI CDI
CDI
Ignition
spark plug
BPM7A CJ-7Y BPM7A
BPM7A
type
Automatic rewind
Starter
rope dia. x length
mm (in)
3.5 X 850
4.0
X
900
(.16 X 35.4)
(.14
X
33.5)
mixing
ratio Gasoline: Oil 32:1 (3%) or 5 ):1
(2%) with special oil approved by
ECHO
gasoline Regular
type
Fuel
oil ECHO air-co led two-stroke oil or approved
equivalent
tank capacity
cc
(US.fl.oz)
450 (15.2)
00
(16.9)
500 (16.9) 650
(22.0)
Clutch
Automatic
3-shoe
centrifugal
Guide bar/Saw chain
lubrication
Automatic oiler
Oil tank capacity cc
(US.fl.oz)
230 (7.8) 250 (8.5) 250 (8.5) 300
(10.1)
*Power head
without
guide bar and saw
chain
Cutting devices
type
Spur
Sprocket
number of teeth
7
Guide bar length
16
16 20 24 16 20 24
16 20 24
27
number of drive links 66
60 70 81 60 70 81 60 70 81
93
Saw chain pitch in
.325 3/8 3/8
3/8
gauge in
0.050
1·2 Technical
data
Models
CS-440EVL
S-510EVL
CS-550EVL
CS-660EVL
Ignition
type
CDI CDI CDI
CDI
Spark plug gap mm (in)
0.6-
0.7
(0.024-
0.028)
Pole shoe air gaps
mm(in)
0.4 (0.016)
0.3-0.45 (0.012-
0.018)
0.4
(0.016)
Ignition timing
VBTDC
30
Primary coil resistance
n
0-0.2
o-
o.5
0-0.5
o-0.2
Secondary coil resistance kr2
1.5-3.0
1.5-3.0
1.5-3.0
0.5-
1.5
Minimum
secondary voltage kV 15 (at 1000 rpm)
12(at1000rpm)
H needle
turn open 7/8 1
1 1
L
needle
turn
open 1 1-1/8 1 1
Idling
speed rpm
2200-2800
Operating
speed rpm
6000-9000
5500-9000
Compression pressure
kg/cm
2
(psi) 9.5 (135) 10.2
(145)
CS-550EVL CS·660EVL
2
SERVICE INFORMATION
CS-440EVL CS-510EVL
1·3 Service limits
1-3-1
Measuring
guide
B
c
5K150
D E F
5K153
5K151
5K152
5K016
G
K
5K042
5K138
p
5K098
3
CS-440EVL CS-510EVL
CS-550EVL CS-660EVL
SERVICE
INFORMATION
1-3-2
Service
limits
References
CS-440EVL
I
CS-510EVL
I
CS-550EVL
CS-660EVL
A
Cylinder bore
When
plating is worn and aluminum can be seen.
B
Piston outer diameter
Min.
41.89 mm
41.89 mm
43.90mm
(1.649 in)
I
(
1.649 in)
I
(1.728in)
46.90 mm
(1.846
in)
c
Piston pin bore
Max.
10.027 mm
(0.395 in)
12.027 mm
(0.474 in)
D
Piston ring groove
Max.
1.6 mm (0.063 in)
E
Piston ring side clearance
Max.
0.1 mm (0.004 in)
F
Piston pin outer diameter
Min.
9.98 mm
(0.393 in)
11.98 mm
(0.472 in)
G
Piston ring
width
Min.
1.45 mm (0.057 in)
H
Piston ring end gap
Max.
0.05 mm (0.002 in)
K
Connecting rod small end bore
Max.
14.025 mm
(0.5522 in)
15.025 mm
(0.5915 in)
L
Crankshaft
runout
Max.
0.05 mm (0.004 in)
M
Clutch drum bore
Max.
71.50 mm 79.0 mm
(2.815 in)
I
(3.110in)
N
Sprocket bore
Max.
14.08 mm (0.554 in)
p
Sprocket teeth wear
limit
Max.
1.00 mm (0.040 in)
1-4
Torque
tables
1-4-1
Special
fasteners
MODEL
CS-440EVL
CS-510EVL, CS-550EVL
CS-660EVL
Description
Size
kg-em
in-lb
Size
kg-em
in-lb
Size
kg-em
in-lb
Crankcase
M5 BD-90
7D-80
M5
85-95
75-80
M5
8()-90
7()-80
Cylinder
M5
8D-90
7D-80
M5
85-95
75-80
M5
8D-90
7D-80
Carburetor insulator
M5
35-40
3D-35
M5
35-40
3()-35
M5
35-40
3()-45
Carburetor
M5
35-40
3()-35
M5
35-40
3()-35
M5
35-40
3D-35
Clutch
hub
LM12
20()-240
175-210
LM12
20D-240
175-210
LM12
20()-240
175-210
Clutch
drum
LMB
20()-240
175-210
LM8
20()-240
175-210
LMB
20D-240
175-210
Flywheel
M8
20()-240
175-210
M10 33()-370
285-320
M10
33D-370
285-320
Ignition coil
M4
2D-25
17-22
M4 2()-25
17-22
M4
2D-25
17-22
CDI module
M5 5D-60
45-50
M4 35-45
3()-40
M5
75-85
65-75
Spark
plug
M14 15D-170
13()-150
M14 15()-170
13D-150
M14
15()-170
13()-150
Starter pawl
M5*
35-45
3()-40
M5*
35-45
3D-40
M5*
75-85
65-75
Fan cover
M5
75-85
65-75
M5
75-85
65-75
M5
75-85
65-75
Muffler
M5
8()-100
7D-90
M5
BD-100
7D-90
M5
BD-100
7D-90
Cushion
M5
5D-60
45-50
M5
5D-60
45-50
M5
5D-60
45-50
Guide bar
M6
9()-110
8D-95
M8
20D-240
175-210
MB
20()-240
175-210
1-4-2
Standard
fasteners
* Apply thread locking
sealant
when fastening.
Standard fasteners
other than those listed above should be
tightened
with the proper tools to the
speci-
field
torques tabulated below.
Regular
screws,
bolts, or nuts
Size
kg-em
in-lb
M3
6-9
5-8
M4
13-18
11- 16
M5
27-32
23-28
M6
45-65
40-55
M8
110-
150
95-
130
M10
260-310
255-270
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