Echo CS-350WES Service Manual

CS-350WES
3
SERVICE INFORMATION
1-2 Technical data
Model CS-350WES
Engine
Idling speed r/min 2900 - 3500
Operating speed* r/min 9300 - 10200
High speed (No load full throttle)* r/min 12500 - 13500
Clutch engagement speed* r/min 4000 - 4450
Compression pressure MPa (kgf/cm
2
) (psi) 0.97 (9.8) (140)
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 r/min kV 17.0
Primary coil resistance Ω 100 - 200
Secondary coil resistance kΩ 1.2 - 1.8
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing at 1500 r/min °BTDC 15
†
20
††
at 3000 r/min °BTDC 16.5
†
21.5
††
at 7000 r/min °BTDC 30
†
35
††
Carburetor
Idle adjust screw initial setting turns in** 2 1/8
L mixture needle initial setting turns back 1 7/8 (WT-722, WT-722A), 2 1/8 (WT-721)
†††
H mixture needle initial setting turns back 2 7/8 (WT-722), 2 3/8 (WT-722A)
3 1/8 (WT-721)
†††
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 7000 r/ min Adjustable : 1.5 - 13 (0.05 - 0.44)
mL/min(U.S.fl.oz./min) (Factory set 7 mL/min)
BTDC: Before top dead center.
*With 35cm guide bar and saw chain.
**Set idle adjust screw to contact throttle plate before initial setting.
†
Serial number 36000001 to 36004400
††
Serial number 36004401 and after
†††
Serial number 36007691 and after

Echo CS-350WES Specifications

General

Brand	Echo
Model	CS-350WES
Category	Chainsaw
Language	English