Yamaha SR250G Service Manual page 72

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Troubleshooting
If the ignition system sheuld become inc
perative, the following troubleshooting aids
Type:
BP7ES (NGK) or W22EP (ND)
Electrode gap:
0.7 ~ 0.8 mm (0.028 ~ 0.031 in)
ightening torque.
2.0 mkg (14.8 ft-lb)
2 19mm 075
3 C2 ~o@mminca7~
1
CHARGING SYSTEM
Block Diagram
will be useful
Checkerwewoniicn] Poor
Comes
a
Uw vote A | Raw
somciie grevty | battary
'Wook eonnectcn
or
'Bieckresstanceo! | Worharthan
| fenton cou
species
| veamery na
seccnsany)
>umary 2780
10x er 20°C
ondary 79K
2 20ms120"¢
or
Sim ack
Wotherihan
Replace sickwo
coltorreeetance | spacttec
lea
Fok-up cl TOO
20% a1
ox
Teun Fay,
SPARK PLUG
1, Check the vlectrode condision and weer,
insulator color and electrode gan
2, Use © wire gauge for measuring the
plug gap.
If the electrodes became toa worn, re-
place the spark plug
4, When installing the plug, always clean
the gasket surface Wipe off any grime
that might be present on the surface of
the spark plug, and torcue the spark
plug properly
3 Manowitch
3 hoe
11
otra raga
A.C. Magneto Generator Output Test
1. Checking method,
1) Connect D.C, voltmster to the battery
terminals.
2) Start the engine.
3) Accelerate engine
to approximately
2.000 min ar more and check gen-
erated voltage.
Generated voltage: 14.5 + 0.5V

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