oil change YAMAHA YBR250 2007 Owners Manual

5-3
5
OPERATION AND IMPORTANT RIDING POINTS
EAU16810
Tips for reducing fuel
consumptionFuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:l
Shift up swiftly, and avoid high
engine speeds during acceleration.
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Do not rev the engine while shifting
down, and avoid high engine
speeds with no load on the engine.
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Turn the engine off instead of letting
it idle for an extended length of time
(e.g., in traffic jams, at traffic lights
or at railroad crossings).
EAU16841
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the
following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throttle
operation or any condition that might
result in engine overheating must be
avoided.
EAU17100
0-1000 km (0-600 mi)
Avoid prolonged operation above 5000
r/min.
1000-1600 km (600-1000 mi)
Avoid prolonged operation above 6000
r/min.
ECA11150
After 1000 km (600 mi) of operation,
the engine oil must be changed, and
the oil filter element replaced.
1600 km (1000 mi) and beyond
The vehicle can now be operated
normally.
ECA10310
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Keep the engine speed out of the
tachometer red zone.
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If any engine trouble should
occur during the engine break-
in period, immediately have a
Yamaha dealer check the vehicle.
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6-8
6
PERIODIC MAINTENANCE AND MINOR REPAIRSpecified spark plug:NGK / DR8EATo install the spark plug
1. Measure the spark plug gap with a wire thickness gauge and, if
necessary, adjust the gap to
specification.1. Spark plug gapSpark plug gap:0.6~0.7mm (0.024-0.028 in)2. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with the spark plug wrench, and then
tighten it to the specified torque. Tightening torque:
Spark plug:17.5 Nm (1.75 m.kgf, 13 ft.lbt)
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4-1/2 turn past
finger tight. However, the spark plug
should be tightened to the specified
torque as soon as possible.4. Install the spark plug cap.
5. Install the cowling.
EAU37801
Engine oil and oil filter
elementThe engine oil level should be checked
before each ride. In addition, the oil must
be changed and the oil filter element
replaced at the intervals specified in the
General periodic maintenance and
lubrication chart.
To check the engine oil level 1. Place the vehicle on a level surface and hold it in an upright
position.Make sure that the vehicle is positioned
straight up when checking the oil level.
A slight tilt to the side can result in a
false reading.2. Start the engine, warm it up forseveral minutes, and then turn it
off.
3. Wait a few minutes until the oil settles, and then check the oil level
through the check window located
at the bottom-right side of the
crankcase.
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6-9
6
PERIODIC MAINTENANCE AND MINOR REPAIR
The engine oil should be between the
minimum and maximum level marks.
12
3
1. Engine oil filler cap
2. Maximum level mark
3. Minimum level mark4. If the engine oil is below the minimum level mark, add sufficient
oil of the recommended type to
raise it to the correct level.
To change the engine oil (with or
without oil filter element
replacement) 1. Start the engine, warm it up for several minutes, and then turn it
off.
2. Place an oil pan under the engine to collect the used oil.
1
1. Dipstick3. Remove the engine oil filler bolt anddrain bolt to drain the oil from the
crankcase.
-2-3-4-5
1
1. Engine oil drain boltCheck the washer for damage and
replace it if necessary.
4. Remove the oil filter element drainbolt to drain the oil from the oil filter
element.Skip steps 5-7 if the oil filter element is
not being replaced.5. Remove the oil filter element coverby removing the bolts.1. Oil filter element cover bolts
2. Oil filter element drain bolt6. Remove and replace the oil filterelement and O-rings.
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6-18
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU37001
Checking the front brake
fluid level
LOWERLOWER
UP
1
1. Minimum level markInsufficient brake fluid may allow air to
enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake fluid
level may indicate worn brake pads and/
or brake system leakage. If the brake
fluid level is low, be sure to check the
brake pads for wear and the brake
system for leakage.
Observe these precautions:l
When checking the fluid level, make
sure that the top of the master
cylinder is level by turning the
handlebars.
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Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking
performance.Recommended brake fluid: DOT 4
If DOT 4 is not available, DOT 3 can be
used.l
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and lead
to poor braking performance.
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Be careful that water does not enter
the master cylinder when refilling.
Water will significantly lower the
boiling point of the fluid and may
result in vapor lock.
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Brake fluid may deteriorate painted
surfaces or plastic parts. Always
clean up spilled fluid immediately.
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As the brake pads wear, it is normal
for the brake fluid level to gradually
go down. However, if the brake fluid
level goes down suddenly, have a
Yamaha dealer check the cause.
EAU22720
Changing the brake fluidHave a Yamaha dealer change the brake
fluid at the intervals specified in the
NOTE after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cylinder
and caliper as well as the brake hose
replaced at the intervals listed below or
whenever they are damaged or leaking.l
Oil seals: Replace every two years.
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Brake hose: Replace every four
years.
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