SERVICE INFORMATION
SRM-5000
3
1-2 Technical data
Engine
Idling speed
r/min
2000 - 2700
Operating speed
r/min
7500 - 8500
Wide open throttle speed r/min 9700 - 10300
†1
10500 - 12000
†2
Clutch engagement speed
r/min
3400 - 3900
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 1000 r/min
kV
14.0
Secondary coil resistance
k
2.0 - 2.8
Pole shoe air gaps
mm(in)
0.30 - 0.40 (0.012 - 0.016)
Ignition timing
at 1000 r/min
°BTDC
28
at 3000 r/min
°BTDC
35
at 7000 r/min
°BTDC
40
at 10000 r/min
°BTDC
33
Carburettor
Idle adjust screw initial setting
turn in*
3 3/4
Idle mixture needle initial setting
turn in**
13 1/2
H
mixture needle initial setting
turn back
4
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 center.
* Set idle speed screw to the point that its tip just contacts throttle plate before initial setting.
** Screw in idle mixture needle from initial thread engagement (at the point that the clicking sound is heard).
†1
With two line nylon line head.
†2
With metal blade.
