Honda Crf250l Service Manual

3-12
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MAINTENANCE
Remove the right fuel tank shroud (page 2-4).
Check the PAIR air supply hose [1] between the PAIR
control solenoid valve [2] and cylinder head cover for
deterioration, damage or loose connections. Make sure
that the hoses are not cracked.
Check the air suction hose [3] between the air cleaner
and PAIR control solenoid valve for deterioration,
damage or loose connections.
Make sure that the hoses are not kinked, pinched or
cracked.
DRIVE CHAIN
DRIVE CHAIN SLACK...

3-13
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MAINTENANCE
Make sure the same index lines [1] on both adjusting
plates [2] are aligned with punch mark [3] in the
swingarm.
Tighten the axle nut to the specified torque.
Hold the drive chain adjusters [4] and tighten the lock
nuts [5] to the specified torque.
Recheck the drive chain slack and free wheel rotation.
Check the drive chain wear indicator label attached on
the left swingarm.
If the drive chain adjuster cut-out [1] reaches red zone
[2] of the indicator label, replace...

3-14
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MAINTENANCESPROCKET INSPECTION
Remove the drive sprocket cover (page 2-6).
Inspect the drive and driven sprocket teeth for wear or
damage, replace if necessary.
Never use a new drive chain on worn sprockets.
Both chain and sprockets must be in good condition, or
new replacement chain will wear rapidly.
Check the attaching bolts and nuts on the drive and
driven sprockets.
If any are loose, tighten th em to the specified torque.
Install the drive sprocket cover (page 2-6).
DRIVE...

3-15
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MAINTENANCE
BRAKE FLUID
Spilled fluid can damage painted, plastic or rubber
parts. Place a rag over these parts whenever the
system is serviced.
 • Do not mix different types of fluid, as they are notcompatible with each other.
 • Do not allow foreign ma terial to enter the system
when filling the reservoir.
 • When the fluid level is low, check the brake pads for wear (page 3-16).
 • A low fluid level may be due to wear of the brake pads. If the brake pads are worn and caliper...

3-16
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MAINTENANCEREAR BRAKE
Support the motorcycle on a level surface, and check
the rear brake fluid level.
Check the brake fluid level.
If the level is near the LOWER level line [1], fill the
recommended brake fluid.
Remove the bolt [2] and reservoir [3].
Remove the cover screws [4],  reservoir cover [5], set
plate [6] and diaphragm [7].
Add DOT 3 or DOT 4 brake fluid from a sealed
container to the UPPER level line [8].
Install the diaphragm, set plate and reservoir cover.
Install...

3-17
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MAINTENANCE
BRAKE SYSTEM
INSPECTION
Firmly apply the brake lever or pedal, and check that no
air has entered the system.
If the lever or pedal feels soft or spongy when operated,
bleed the air from the system.
For brake air bleeding (page 18-4).
Inspect the brake hose [1] a nd fittings for deterioration,
cracks and signs of leakage.
Tighten any loose fittings.
Replace hoses and fittings as required.
BRAKE PEDAL HEIGHT ADJUSTMENT
Loosen the lock nut [1] and turn the push rod [2]...

3-18
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MAINTENANCE
HEADLIGHT AIM
Support the motorcycle in an upright position.
Adjust the headlight aim horizontally by turning the
horizontal beam adjuster [1].
Adjust the headlight aim vertically by turning the vertical
beam adjuster [2].
CLUTCH SYSTEM
Measure the clutch lever fr eeplay at the end of the
clutch lever.
The adjuster may
be damaged if it is positioned too far
out, leaving minimal thread
engagement.Minor adjustment is made with the minor adjuster [1] at
the clutch...

3-19
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MAINTENANCE
SIDESTAND
INSPECTION
Support the motorcycle using a safety stand or hoist.
Check the sidestand spring [1] for damage or loss of
tension.
Check the sidestand [2] for movement and lubricate the
sidestand pivot if necessary.
Check the sidestand ignition cut-off system:
– Sit astride the motorcycle  and retract the sidestand.
– Start the engine.
– Shift the transmission in gear and lower the
sidestand.
– The engine should stop as the sidestand is lowered.
If there is a...

3-20
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MAINTENANCE
WHEELS/TIRES
Support the motorcycle using a safety stand or hoist,
raise the front wheel off the ground.
Hold the front fork leg and move the front wheel
sideways with force to see if the wheel bearings are
worn.
For front wheel service (page 16-4).
Support the motorcycle using  a safety stand or hoist,
raise the rear wheel off the ground.
Hold the swingarm and move the rear wheel sideways
with force to see if the wheel bearings are worn.
For rear wheel service (page...

4-1
4
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4. PGM-FI SYSTEM
SERVICE INFORMATION ·····························4-2
PGM-FI SYSTEM LOCATION ·······················4-2
PGM-FI SYSTEM DIAGRAM·························4-3
PGM-FI TROUBLESHOOTING 
INFORMATION ··············································4-4
PGM-FI SYMPTOM 
TROUBLESHOOTING···································4-6
DTC INDEX ····················································4-7
SENSOR UNIT POWER LINE 
INSPECTION ·················································4-8DTC...