Technical Data - Echo CS-370ES Service Manual

CS-370ES
CS-420ES
1-1 Specifications (continued)
Cutting devices
Guide bar Part No.
Called length
Gauge
Saw chain Type
Number of drive links
Pitch
Gauge

1-2 Technical data

Model
Engine
Idling speed
Wide open throttle speed*
Clutch engagement speed
Compression pressure
Ignition system
Spark plug gap
Minimum secondary voltage at 1000 rpm
Secondary coil resistance
Pole shoe air gaps
Ignition timing at 3,000 rpm
at 8,000 rpm
at 10,000 rpm
at 12,000 rpm
Carburetor
Idle adjust screw initial setting
L mixture needle initial setting
H mixture needle initial setting
Test Pressure, minimum
Metering lever height
Chain oil discharge volume at 7000 rpm
BTDC: Before top dead center.
* With 35/38 cm guide bar and saw chain.
** Set idle adjust screw to contact throttle plate before initial setting.
SERVICE INFORMATION
cm
in
in
in
rpm
rpm
rpm
2
MPa (kgf/cm ) (psi)
mm(in)
kV
kΩ
mm (in)
°BTDC
°BTDC
°BTDC
°BTDC
turns in**
turns back
turns back
2
MPa (kgf/cm ) (psi)
mm(in)
mL/min(U.S.fl.oz./min)
CS-420ES
38RD58-325
38
0.058
CARLTON K2L OREGON 21BP
64
0.325
0.058
CS-370ES
2400 - 2900
11500 - 12500
3800 - 4300
1.02 (10.4) (148)
0.6 - 0.7 (0.024 - 0.028)
15
1.5 - 2.2
0.3 - 0.4 (0.012 - 0.016)
10
32
34
15
1 5/8
1 1/4
2 3/8
0.05 (0.5) (7.0)
1.65 (0.06) lower than diaphragm seat
Adjustable : 1.5 - 13 (0.05 - 0.40)
(Factory set 7 mL/min)
3
43RD58-325
43
72
CS-420ES
2400 - 2900
12300 - 13000
3800 - 4300
0.84 (8.6) (122)
10
32
34
15
1 3/8
1 3/8
2 3/4