Echo SRM-510ES, Service Manual

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SERVICE INFORMATION SRM-510ES
3
1-2 Technical data
Model SRM-510ES (L) SRM-510ES (U)
Engine
Idling speed r/min 2,750 +/- 250
Operating speed r/min 8,000
Wide open throttle speed r/min 9,500 - 11,000*
1
11,000 - 11,700*
2
Clutch engagement speed r/min 3,500
Service limit speed
†
r/min 3,300
Compression pressure MPa (kgf/cm
2
) (psi) 0.83 (8.5) (121)
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 Ω 2.0 - 2.8
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016)
Ignition timing at 1,000 r/min °BTDC 22
at 3,000 r/min °BTDC 15
at 8,000 r/min °BTDC 25
at 10,000 r/min °BTDC 25
PET-9000 Parameter #1 328
#2 05
Carburettor
Idle adjust screw initial setting turns in** 1 1/2
Idle mixture needle initial setting turns in*** 13
Hi speed mixture needle initial setting turns out 3 3/4
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
Air cleaner system
type Inner vent
Air fi lter Pleats
BTDC: Before top dead centre.
*
1
With Nylon line cutter and shield.*
2
With 3-tooth blade (255 mm).
** Set idle adjust 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).
†
If clutch engagement speed is lower than service limit speed, replace clutch assembly with new one.