SERVICE INFORMATION
SRM-2655SI
3
1-2 Technical data
Engine
Idling speed
r/min
2400 - 3000
Operating speed
r/min
7000
Wide open throttle speed*
r/min
8500 - 10000
Clutch engagement speed
r/min
3100 - 3700
Compression pressure
MPa (kgf/cm
2
) (psi)
0.98 (9.8) (138)
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
12 - 13
Pole shoe air gaps
mm(in)
0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 1000 r/min
°
BTDC
25
Carburettor
Main jet
#37
Idle adjust screw initial setting
turn in**
2 1/2
Idle mixture needle initial setting
turn in***
13 1/2
Test pressure, minimum
MPa (kgf/cm
2
) (psi)
0.05 (0.5) (7.0)
Metering lever height
mm (in)
1.5 (0.059) 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.
*** Screw in idle mixture needle from initial thread engagement (at the point that the clicking sound is heard).