Echo CS-3500 - Manual (Page 3)

3
SERVICE INFORMATION CS-3500
1-2 Technical data
Engine
Idling speed rpm 2800 - 3200
Operating speed rpm 8000 - 10000
High speed (No load full throttle)* rpm 11500 - 12000
Clutch-in speed rpm 4200 - 4800
Compression pressure kgf/cm 2 (psi) 7.7 (109)
Carburettor
Idle speed screw initial setting turn in 1 3/4
L needle initial setting turns back 1 1/4
H needle initial setting turns back 1 1/8
Test pressure kgf/cm 2 (psi) 0.5 (7.0)
Metering lever height mm(in) 1.65 (0.065) lower than diaphragm seat
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 rpm kV 18
Secondary coil resistance k
Ω
1.7 - 2.2
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing °BTDC
at 1500 rpm 26.5
at 3000 rpm 26.5
at 8000 rpm 25
Chain oil discharge volume at 7000 rpm
cm 3 /min(U.S.fl.oz./min) 1.5 - 13 (0.05 - 0.45) adjustable
BTDC: Before top dead center.
*With guide bar and saw chain.