Echo CS-350WES - Manual (Page 3)

SERVICE INFORMATION
CS-350T
CS-350TES
CS-350WES
3
1-2 Technical data
Model CS-350T CS-350TES 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
Secondary coil resistance k
Ω
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 ††
Carburettor
Idle adjust screw initial setting turns in** 4 7/8 2 1/8
L mixture needle initial setting turns back 2 1/8 (WT-699, WT-699A) 1 7/8 (WT-722, WT-722A)
2 3/4 (WT-698A)*** 2 1/8 (WT-721)***
H mixture needle initial setting turns back 2 5/8 (WT-699) 2 7/8 (WT-722)
2 7/8 (WT-699A) 2 3/8 (WT-722A)
2 7/8 (WT-698A)*** 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 centre.
*With 35cm guide bar and saw chain.
**Set idle adjust screw to contact throttle plate before initial setting.
† Serial number CS-350T 36000001 to 36002100, CS-350TES 36000001 to 36007533,
CS-350WES 36000001 to 36004400
†† Serial number CS-350TES 36007534 and after, CS-350WES 36004401 and after
*** CS-350TES with WT-698A : Serial Number 36010654 and after
CS-350WES with WT-721 : Serial Number 36007691 and after