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SERVICE INFORMATION
HCR-1510
1-2 Technical data
Engine
Idling speed r/min 2400 - 3200
Wide open throttle speed r/min 7900 - 8500
Clutch engagement speed r/min 3500 - 4100
Compression pressure MPa (kgf/cm
2
) (psi) 0.69 (7.0) (100)
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 r/ min kV 15
Primary coil resistance Ω 250 - 400
Secondary coil resistance kΩ 2.4 - 3.2
Pole shoe air gaps mm(in) 0.30 - 0.35 (0.012 - 0.014)
Ignition timing at 3000 r/min °BTDC 20.0
at 7000 r/min °BTDC 42.0
at 8000 r/min °BTDC 19.0
at 8500 r/min °BTDC 15.0
Carburettor
Venturi size mm(in) 8.5 (0.34)
Throttle bore mm(in) 12.7 (0.5)
Idle adjust screw initial setting turn in* 2 3/4
H mixture needle initial setting turn back 1 1/2
L mixture needle initial setting turn back 1 1/2
Test Pressure, minimum MPa (kgf/cm
2
) (psi) 0.05 (0.5) (7.0)
Metering lever height mm(in) 0.1 - 0.25 (0.004 - 0.010) lower than diaphragm seat
BTDC: Before top dead centre.
* Set idle speed screw to contact throttle plate before initial setting.
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