Echo CS-355T - SERVICING INFORMATION

3
CS-355T
SERVICE INFORMATION
1-2 Technical data
Engine
Idling speed RPM 2,800
-100
+500
Wide open throttle speed*
RPM
13,800 - 14,500
Clutch engagement speed RPM
4,300
Engagement Minimum
†
RPM
3,600
Compression pressure
MPa (kgf/cm
2
) (psi)
1.03 (10.5) (149)
Ignition system with stop holding function
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1,000 RPM kV 20
Primary coil resistance
(Red Probe on stop terminal of module)
MΩ 2.2 -2.6
Secondary coil resistance Ω 970 - 1010
Pole shoe air gaps mm (in) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 3,000 RPM
°BTDC 6
at 8,000 RPM °BTDC 34
at 10,000 RPM °BTDC 33
at 14,000 RPM °BTDC Revolution limiter
Carburetor
Idle adjust screw initial setting turns in** 1 3/8
L mixture needle initial setting
H mixture needle initial setting
Test Pressure, minimum
MPa (kgf/cm
2
) (psi)
0.05 (0.5) (7.0)
Metering lever height
mm(in)
1.65 (0.06) lower than diaphragm seat
Chain oil discharge volume at 7,000 RPM
mL/min(U.S.fl.oz./min)
Fixed 7.0 mL/min
BTDC: Before top dead center.
* With 14 in. guide bar and properly adjusted saw chain.
**Set Idle adjust screw to the point that its tip contacts throttle plate before initial setting.
†
If clutch engagement speed is lower than minimum clutch engagement speed, replace clutch assembly with
new one.