Honda Crf 250 M Manual

Servicing Your Honda77
Brakes
Fluid Level Inspection
Front Brake Fluid Level Check
(1) LOWER level mark
With the motorcycle in an upright position, check
the fluid level.
It should be above the LOWER level mark (1). If
the level is at or below the LOWER level mark,
check the brake pads for wear (page 79).
Worn brake pads should be replaced. If the pads
are not worn, have your brake system inspected
for leaks.
If the brake lever freeplay exceeds 0.8 in 
(20 mm), there is probably air in the brake 
system...

78Servicing Your Honda
Brakes
Adding Front Brake Fluid
The recommended brake fluid is Honda DOT 4
brake fluid or an equivalent.
When adding brake fluid be sure the reservoir is
horizontal before the cap is removed or brake
fluid may spill out.
(1) screws
(2) reservoir cap/diaphragm
(3) upper level mark 
1. Remove the screws (1), reservoir cap (2) and
diaphragm.
2. Fill the reservoir with DOT 4 brake fluid to
the upper level mark (3). Do not overfill.
3. Reinstall the diaphragm and reservoir cap.
4....

Servicing Your Honda79
Brakes
Brake Pad Wear
Brake pad wear depends on the severity of usage
and track conditions.  (Generally, the pads will
wear faster on wet and dirty tracks) Inspect the
pads at each regular maintenance interval (page
21).
Front Brake Pads
Inspect the brake pads (2) through the front
wheel to determine the pad wear.  If either pad is
worn anywhere to a thickness of 0.04 in (1 mm),
both pads must be replaced.
(1) brake caliper (3) brake disc
(2) brake pads
Rear Brake Pads
Inspect the...

80Servicing Your Honda
Wheels
Refer to Safety Precautionson page 19.
Maintenance of spoke tension and wheel trueness
(roundness) is critical to safe motorcycle
operation. During the first 100 miles (150 km),
spokes will loosen more rapidly due to the initial
seating of the parts.  Excessively loose spokes
may result in instability at high speeds and the
possible loss of control.  It’s also important that
the rim locks are secure to prevent tire slippage.
It is not necessary to remove the wheels to...

Servicing Your Honda81
Tires & Tubes
WARNING
Using tires that are excessively worn or
improperly inflated can cause a crash in
which you can be seriously hurt or killed.
Follow all instructions in this owner’s
manual regarding tire inflation and
maintenance.Front 15 psi (100 kPa, 1.0 kgf/cm2)
Rear 15 psi (100 kPa, 1.0 kgf/cm
2)
Refer to Safety Precautionson page 19.
To safely operate your CRF the tires must be the
proper type (off-road) and size, in good condition
with adequate tread, and correctly...

82Servicing Your Honda
Tires & Tubes
Tire Replacement
The tires that came on your CRF were designed
to provide a good combination of 
handling, braking, durability, and comfort across
a broad range of riding conditions.
WARNING
Installing improper tires on your
motorcycle can affect handling and
stability.  This can cause a crash in which
you can be seriously hurt or killed.
Always use the size and type of tires
recommended in this owner’s manual.
Front 80/100-21  51M
Rear 100/90-19  57M
Type bias-ply,...

Servicing Your Honda83
Drive Chain
Refer to Safety Precautionson page 19.
The service life of the chain depends on proper
lubrication and adjustment.  Poor maintenance
can cause premature wear or damage to the drive
chain or sprockets.
When the motorcycle is ridden on unusually
dusty or muddy tracks, more frequent
maintenance will be necessary.
Before servicing your drive chain, turn the
engine OFF, raise the rear wheel off the ground
by placing the optional workstand or equivalent
support under the...

84Servicing Your Honda
(6) upper drive chain roller
(7) lower drive chain roller
If the upper drive chain roller was removed,
install the drive chain roller with its “” mark
(8) side facing out.
Install the lower drive chain roller.
Drive Chain
(6) upper drive chain roller (8) “” mark
(7) lower drive chain roller
8. Check the driven sprocket nut torque values
after each race.
24 lbf·ft (32 N·m, 3.3 kgf·m)
(1) rear axle nut (4) index mark
(2) lock nut (5) axle plate
(3) adjusting bolt (6) reference mark...

Servicing Your Honda85
Drive Chain
4. Inspect the sprocket teeth for wear or damage.
We recommend replacing the sprocket
whenever a new chain is installed.
Both chain and sprockets must be in good
condition, or the new replacement chain or
sprocket(s) will wear rapidly.
Excessively worn sprocket teeth have a
hooked, worn appearance.  Replace any
sprocket which is damaged or excessively
worn.
Use of a new chain with worn sprockets will
cause rapid chain wear.
5. Measure a section of the drive chain to...

86Servicing Your Honda
Exhaust Pipe/Muffler
Exhaust Pipe/Muffler Inspection
1. Check the flange bolts for tightness.
2. Check the exhaust pipe and muffler for cracks
or deformation.
A damaged exhaust pipe and muffler may
reduce engine performance.
Muffler Removal
1. Remove the seat bolt (1), collars (2), side
cover bolt (3) and right side cover (4).
(1) seat bolt (3) side cover bolt
(2) collars (4) right side cover
2. Loosen the muffler clamp bolt (5).
3. Remove the muffler A bolt (6), muffler B...