Echo SRM-2305SI - Manual (Page 3)

SERVICE INFORMATION
SRM-2305
SRM-2305SI 3
1-2 Technical data
Engine
Idling speed r/min 2400 - 3200
Operating speed r/min 7500
Wide open throttle speed* r/min 8200 - 10000
Clutch engagement speed r/min 3400 - 4000
Compression pressure MPa (kgf/cm 2 ) (psi) 0.93 (9.5) (135)
Ignition system
Spark plug gap mm (in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 r/min kV 20
Secondary coil resistance k
Ω
1.0 - 2.0
Pole shoe air gaps mm(in) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 7000 r/min
°
BTDC 28
Carburettor
Idle adjust screw initial setting turn in** 2 3/4
L mixture needle initial setting turns back 1 1/4
H mixture needle initial setting turns back 1 3/8
Test pressure, minimum MPa (kgf/cm 2 ) (psi) 0.05 (0.5) (7.0)
Metering lever height mm (in) 0.1 - 0.25 (0.004 - 0.010) lower than diaphragm seat
BTDC: Before top dead centre.
* With two line nylon line head.
** Set idle adjust screw to contact throttle plate before initial setting.