SERVICE INFORMATIONSRM-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.
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