3
SERVICE INFORMATION
HCR-1510
1-2 Technical data
Engine
Idling speed
r/min
2
4
00 - 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
k
Ω
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.