Yamabiko Echo SRM-2620ES - Technical Data

SERVICE INFORMATION
3
SRM-2620ES, SRM-2620TES
T262XS, C262S
T262TXS, C262TS
1-2 Technical data
Engine
Compression pressure MPa (kgf/cm
2
) (psi) 0.97 (9.8) (140)
Clutch engagement speed r/min 4,100
Engagement Minimum
†
r/min 3,800
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Spark test
Tester gap w/ spark plug mm(in) 4.0 (0.16)
Tester gap w/o spark plug mm(in) 6.0 (0.24)
Secondary coil resistance Ω 960 - 1,000
Pole shoe air gaps mm(in) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing at 2,900 r/min °BTDC 9
at 6,500 r/min °BTDC 22
at 8,500 r/min °BTDC 33
at 11,000 r/min °BTDC 19
Carburettor
Test Pressure, minimum MPa (kgf/cm
2
) (psi) 0.05 (0.5) (7.0)
Metering lever height mm(in) 0.66 (0.03) lower than diaphragm seat
Tool to adjust mixture needles
Screwdriver 2.5 mm P/N X603-000050
D-shaped tool (S) P/N X645-000022
(Carb. adjustment tool P/N Y089-000094)
BTDC: Before top dead centre
†
If clutch engagement speed is lower than minimum clutch engagement speed, replace clutch assembly with
new one.