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PB-651T/H
PB-751T/H
PB-755T/H
3
SERVICE INFORMATION
1-2 Technical data
Model
PB-651T/H
PB-751T/H
PB-755T/H
Engine
Idling speed
r/min
2400 - 2800
Wide open throttle speed
r/min
6800 - 7300
Compression pressure
MPa (kgf/cm
2
) (psi)
1.0 (10.2) (145)
Ignition system
Spark plug gap
mm(in)
0.6 - 0.7 (0.024 - 0.028)
Minimum secondary voltage at 1000 r/ min
kV
12
Secondary coil resistance
k
Ω
1.2 - 1.8
Pole shoe air gaps
mm(in)
0.3 - 0.4 (0.012 - 0.016)
Ignition timing
°
BTDC
30
Carburetor
Venturi size
mm(in)
15.0 (0.591)
Throttle bore
mm(in)
15.0 (0.591)
Idle adjust screw initial setting
turn in*
1 1/2
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
BTDC: Before top dead center.
* Set idle speed screw to the point that its tip just contacts throttle plate before initial setting.
Summary of Contents for PB-651T/H
Page 1: ...SERVICE MANUAL...