SERVICE INFORMATION
CS-500ES
3
1-2 Technical data
Engine
Idling speed r/min
3,100 + 400
- 300
Wide open throttle speed* r/min 11,800 - 12,500
Clutch engagement speed r/min 3,900
Engagement Minimum
†
r/min 3,800
Compression pressure MPa (kgf/cm
2
) (psi) 1.05 (10.7) (152)
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1,000 r/min kV 14
Primary coil resistance
Ω 300 - 340
(Red Probe on stop terminal of module)
Secondary coil resistance kΩ 2.5 - 2.9
Pole shoe air gaps mm(in) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 3,000 r/min °BTDC 17
at 8,000 r/min °BTDC 29
at 10,000 r/min °BTDC 35
PET-9000 Parameter 1 324
Parameter 2 03
Carburettor
Idle adjust screw initial setting turns in** 2
L mixture needle initial setting turns out 1 1/2
H mixture needle initial setting turns out 3 1/8
Test Pressure, minimum MPa (kgf/cm
2
) (psi) 0.05 (0.5) (7.0)
Metering lever height mm(in) 1.65 (0.06) lower than diaphragm seat
Chain oil discharge volume
Factory set: 7 mL/min
mL/min(U.S.fl .oz./min)
BTDC: Before top dead centre.
* With 45 cm guide bar and properly adjusted saw chain.
**Set idle adjust screw to the point that its tip contacts throttle plate before initial setting.
†
If clutch engagement speed is lower than minimum r/min, replace clutch assembly with new one.
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