SERVICE INFORMATION
GT-222ES, SRM-222ES
F226S, T226S, C226S
3
1-2 Technical data
Model
GT-222ES
F226S
SRM-222ES (L)
T226S
SRM-222ES (U)
C226S
Engine
Idling speed
r/min
3,000 +/- 400
Wide open throttle speed
r/min 6,700 - 7,700* 9,000 - 10,000* 10,500 - 11,500**
Clutch engagement speed
r/min
3,750
Engagement Minimum
†
r/min
3,500
Compression pressure
MPa (kgf/cm
2
) (psi)
0.9 (9.1) (130)
Ignition system with stop holding function
Spark plug gap
mm(in)
0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1500 r/min
kV
18
Primary coil resistance
Ω
320 - 420
Secondary coil resistance
k
Ω
2.7 - 3.3
Pole shoe air gaps
mm (in)
0.3 - 0.4 (0.012 - 0.016)
Ignition timing
at 3,000 r/min
°BTDC
18
at 8,000 r/min
°BTDC
34
at 11,000 r/min
°BTDC
14
Carburettor
Venturi Size
9.0 (0.354)
Throttle Bore
10.5 (0.413)
Idle adjust screw initial setting
turns out
8 7/8
L mixture needle initial setting
turns out
3 7/8
H mixture needle initial setting
turns out
1 1/8
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 - 0.01) lower than diaphragm seat
BTDC: Before top dead centre.
*With Nylon line cutter and shield.
**With 3-tooth blade (230 mm).
†
If clutch engagement speed is lower than service limit speed, replace clutch assembly with new one.
