Manual

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 kΩ 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).