Yamaha SR250G Service Manual page 19

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NOTE
Ignition timing is not adjustable
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Spark plug
The life of a spark plug and its disenioring
vary according to the habits of the ricer. Az
each periodic inspection, replace sumed or
fouled plug with naw ones
of the specified
tyoe It is actually economical to install new
plug often s i n s e
it will tend 10 keep the
'engine in good condition and prevent exces-
sive fuel consumption
1. The spark pig should be inspected
and oleance at the specifiad intervals.
Clean the electrodes of cartor and ad-
just the electrode cap to the specifica-
tian
3. Be sure to use the proper reali, type
and electrode gap plug as 2 replace-
ment to ovoid cverheating. fouling or
piston dainage.
we
Type
BP7ES (NGK) or W22EF (ND)
Electrode gap
0.7 ~ 6.8 mm (0.028 ~ 0.031 in!
Tightening torque
2.0 m-kg (14 5 fb:
reer ony
0 7~ 08mm W022 ~ 0081 w)

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