Echo SRM-350ES User Manual
Page 3
SERVICE INFORMATION
SRM-330ES
SRM-350ES
3
1-2 Technical data
Model
SRM-330ES
SRM-350ES
Engine
Idling speed
r/min
2300 - 3300
Operating speed
r/min
6500 - 7500
Clutch engagement speed
r/min
3600 - 4200
Compression pressure
MPa (kgf/cm
2
) (psi)
1.05 (10.5) (150)
0.95 (9.5) (135)
Ignition system
Spark plug gap
mm (in)
0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1000 r/min
kV
17
Secondary coil resistance
k
Ω
11 - 15
Pole shoe air gaps
mm(in)
0.3 - 0.5 (0.012 - 0.020)
Ignition timing at 1000 r/min
°
BTDC
25
Carburettor
Main jet
#44
#38
Idle adjust screw initial setting
turn in*
4 1/2
4 1/2
Idle mixture needle initial setting
turns in**
14
14
Test pressure, minimum
MPa (kgf/cm
2
) (psi)
0.05 (0.5) (7.0)
Metering lever height
mm (in)
1.5 (0.06) lower than diaphragm seat
BTDC: Before top dead centre.
* Set idle speed screw to contact throttle plate before initial setting.
** Screw in idle mixture needle from initial thread engagement (at the point that the clicking sound is heard).