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General Competition Maintenance
Servicing Your Honda 27
(cont’d)
Spark Plug
Some non-resistor plugs may cause ignition problems. Refer
to the recommendations elsewhere in this manual for specific
types so you will be sure to use the proper reach and heat
range. Replace periodically as specified in the Maintenance
Schedule (page 25).
Spark Plug Cap
Install a small plastic wire band around the spark plug cap to
reduce any possibility of it loosening or of water penetration.
Air Cleaner
Clean and oil your air cleaner regularly because the volume
of air able to pass through it has a great effect on
performance. Both engine performance and long term
durability may be affected by an air cleaner that has
deteriorated and allows dirt to pass. Inspect the air cleaner
closely each time it’s serviced for evidence of small tears or
seam separation. Keep a spare air cleaner oiled and ready to
install, sealed in a plastic bag. Riding in dusty conditions
may require servicing the air cleaner or replacing it with a
pre-serviced air cleaner between motos (CRF250R)/races
(CRF250RX). Be careful not to over oil the air cleaner.
While it is important to oil the air cleaner thoroughly, over
oiling will cause an overall rich running condition, probably
more noticeable off idle and in low rpm performance.
Follow the servicing instructions in the Maintenance
section. Use Pro Honda Foam Air Filter Oil or an equivalent.
Be sure to grease the air cleaner flange where it contacts the
air cleaner housing. Pro Honda Foam Air Filter Sealer, or an
equivalent, is handy for this because any dirt that penetrates
this sealing area will show up clearly (page 70).
Use the Honda Genuine air cleaner or an equivalent air
cleaner specified for your model.
Using the wrong Honda air cleaner or a non-Honda air
cleaner which is not of equivalent quality may cause
premature engine wear or performance problems.
Footpegs
Worn footpeg teeth can be repaired by filing the grooves between
the teeth with a triangular shaped file.
Be aware that filing them too sharp will reduce boot sole lifespan.
Sharpen only the points of the teeth. Filing the grooves deeper will
weaken the footpegs. Be sure the pegs are free to pivot freely and
that the pivot pin retaining cotter pins are in good condition.
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