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General Competition Maintenance
Servicing Your Honda 29
Brake Fluid Replacement
Refer to Brake Pad Wear on page 122.
Brake Caliper Inspection: Be sure both the front and rear
calipers are able to move freely on the caliper pin and caliper
bracket pins. Check pad thickness periodically and replace the
pads when minimum thickness is reached. If the brakes fade
when they are hot, inspect the pads for glazing or damage, and
replace if necessary.
Brake Fluid Replacement: Refer to an official Honda Service
Manual (page 186) for brake fluid replacement instructions.
Replace the brake fluid in the brake system every 2 years.
Replace the fluid more frequently if you subject your brakes to
severe use. Heavy braking heats the brake fluid and it may
deteriorate sooner than expected. Any type of riding, that
requires frequent use of the brakes, such as in tight woods, can
shorten the service life of brake fluid.
Bleed Hole
After every moto (CRF250R)/race (CRF250RX), check the bleed
hole below the water pump cover for leakage. Clean away any
clogged dirt or sand, if necessary. Check the bleed hole of the
water pump for signs of seal leakage. If water leaks through the
bleed hole, replace the mechanical seal. If oil leaks through the
bleed hole, replace the oil seal. Make sure that there is no
continuous coolant leakage from the bleed hole while operating
the engine. A small amount of coolant weeping from the bleed
hole is normal. See an official Honda Service Manual (page 186)
or consult your dealer (page 188) for replacing the mechanical
seal or oil seal. Both seals should be replaced at the same time.
Suspension Linkage Lubrication
Disassemble, clean, inspect and lubricate all suspension linkage
pivot bearings with molybdenum disulfide grease (containing
more than 3% molybdenum disulfide additive Moly Paste 77)
after each 7.5 hours of running time in order to maintain proper
suspension performance and minimize component wear.
Swingarm
Do not attempt to weld or otherwise repair a damaged
swingarm. Welding will weaken the swingarm.
Swingarm Pivot Lubrication
Clean, inspect and lubricate the swingarm and suspension
linkage pivots with molybdenum disulfide grease (containing
more than 3% molybdenum disulfide additive Moly Paste 77)
after each 7.5 hours of running time in order to maintain
proper suspension performance and minimize component
wear. Be sure all of the dust seals are in good condition.
Handgrips
Always use Pro Honda Handgrip Cement or an equivalent
when replacing handgrips.
Refer to an official Honda Service Manual (page 186) for
installation instructions.
Throttle Grip/Handlebar Grip
Right throttle grip: Align the index mark on the throttle grip
with the index mark of the throttle pipe.
Left handlebar grip: Align the index mark on the left
handlebar grip with the paint mark on the handlebar.
For added security, you may choose to bind the handgrips to
the handlebar and throttle pipe with safety wires to prevent the
possibility of them loosening. Position the twisted wire ends
away from your palms and be sure to bend the wire ends well
into the handgrip rubber so they will not snag your glove.
Throttle Control
Remove the throttle control every few rides, clean the inside
of the throttle pipe and handlebar thoroughly. Inspect the cable
carefully for kinks or other damage that may restrict throttle
control in anyway. Move the handlebar from lock to lock to be
sure there is no cable interference. Make certain the throttle
operation is perfect after servicing and inspecting.
Fuse
Check the fuse before looking elsewhere for the cause of
an electrical problem.
Engine Oil and Filter
Drain and replace engine oil often to ensure the greatest
service life of the piston, cylinder, crankshaft,
transmission and clutch.
Also replace engine oil filter often to ensure the greatest
service life. Frequent changes will also assure consistent
performance of power, response, both shifting and
clutch action (page 65).
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