Honda 2010 CBF 250, Workshop Manual

Page: 40 / 291

MAINTENANCE
CBX250
ENGINE BREATHER
NOTE
Remove the cap drainage breather tube to clean any
deposit. Install again the drain plug.
SPARK PLUG
d
Disconnect the noise dampening layer of the spark plug.
NOTE
Remove the spark plug using the right tool. Inspect or
replace the spark plug of turning on agreement with the
recommended intervals in the table of maintenance (page
3-3).
NOTE
INSPECTION
Inspect the following items and replace the spark
plug in the event that required (spark plug
power recommended: page 3-1). •Damage or
cracks in the insulator •wear of the electrodes
•Status of burning and colouring: The dark
brown to clear indicates good condition. A col-
or excessively clear indicates poor functioning
of ignition system or lean. Deposits of black
soot or moisture indicated a mixture too rich.
REUSE OF THE SPARK PLUG
Clean the electrodes with a brush of steel or with a
cleaner of spark plugs. Check the opening between the
central electrodes and side using a gauge of
thicknesses of the type wire. In case of need, setting the
opening doubling carefully the electrode side.
Spark plug gap: 0,8 – 0,9 mm
Use only the spark plug specified for this motorcycle.
Before removing the spark plug clean around the base
using compressed air. Make sure that no foreign material
between in the combustion chamber.
While the engine is hot, use thermal gloves for not suf-
fer burns.
Perform services more frequent when driven in rain,
with maximum acceleration or after washing or dump
motorcycle. Make services in the event that the level of
deposits can be seen in the section of transparent
drainage breather tube.
Drain PLUG
DRAINAGE BREATHER TUBE
LAYER SUPPRESSIVE NOISE
SPARK PLUG
SPARK PLUG
INSULATOR
ELECTRODES
Spark plug gap 0,8
– 0,9 mm