Honda CRF250R Owner's Manual page 37

Suspension Linkage Lubrication
Disassemble, clean, inspect and lubricate all suspension linkage
pivot bearings with molybdenum disulfide grease (containing
more than 3% molybdenum disulfide additive) after each 7.5
hours of running time in order to maintain proper suspension
performance and minimize component wear.
Swingarm Pivot Lubrication
Clean, inspect and lubricate the swingarm and suspension
linkage pivots with molybdenum disulfide grease (containing
more than 3% molybdenum disulfide additive) 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.
Swingarm
Do not attempt to weld or otherwise repair a damaged
swingarm. Welding will weaken the swingarm.
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.
Brake Fluid Replacement
Refer to Brake Pad Wear on page 93.
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 Shop
Manual for brake fluid replacement instructions. Replace the
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 race, 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. If oil
leaks through the bleed hole, the oil seal is damaged. See an official
Honda Shop Manual or consult your dealer for replacing the mechanical
seal or oil seal. Both seals should be replaced at the same time.
General Competition Maintenance
Handgrips
Always use Hand Grip Cement or an equivalent when
replacing handgrips.
Refer to an official Honda Shop Manual for installation
instructions.
Throttle 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 hand grips
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.
Servicing Your Honda
29