Yamaha Star 250 Xv250y C Owners Manual

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-6
7
17Shift pedal pivot 
shaftApply lithium-soap-based grease 
lightly.√√√√√
18 Sidestand pivotCheck operation.
Apply lithium-soap-based grease 
lightly.√√√√√
19*Sidestand switchCheck operation and replace if 
necessary.√√√√√√
20*Front forkCheck operation and for oil leak-
age.
Replace if necessary.√√√√√
21*Shock absorber as-
sembliesCheck operation and for oil leak-
age.
Replace if necessary.√√√√√
22 Engine oilChange (warm engine before 
draining).√√√√√√
23Engine oil filter ele-
mentReplace.√√√
24*Front and rear brake 
switchesCheck operation.√√√√√√
25*Control and meter 
cablesApply Yamaha chain and cable 
lube or engine oil thoroughly.√√√√√√
26*Throttle grip hous-
ing and cableCheck operation and free play.
Adjust the throttle cable free play 
if necessary.
Lubricate the throttle grip housing 
and cable.√√√√√ No. ITEM ROUTINEINITIAL ODOMETER READINGS
600 mi 
(1000 km) 
or 
1 month4000 mi 
(6000 km) 
or 
6 months7000 mi 
(11000 km) 
or 
12 months10000 mi 
(16000 km) 
or 
18 months13000 mi 
(21000 km) 
or 
24 months16000 mi 
(26000 km) 
or 
30 months
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							PERIODIC MAINTENANCE AND ADJUSTMENT
7-7
7
* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.TIPFrom 19000 mi (31000 km) or 36 months, repeat the maintenance intervals starting from 7000 mi (11000 km) or 12 months.
EAU17620
TIP

The air filter needs more frequent service if you are riding in unusually wet or dusty areas.


Hydraulic brake system
When disassembling the master cylinder or caliper cylinder, always replace the brake fluid. Check the brake fluid level
regularly and fill as required.
Replace the oil seals on the inner parts of the master cylinder and caliper cylinder every two years.Replace the brake hoses every four years or if cracked or damaged.
27*Lights, signals and 
switchesCheck operation.
Adjust headlight beam.√√√√√√ No. ITEM ROUTINEINITIAL ODOMETER READINGS
600 mi 
(1000 km) 
or 
1 month4000 mi 
(6000 km) 
or 
6 months7000 mi 
(11000 km) 
or 
12 months10000 mi 
(16000 km) 
or 
18 months13000 mi 
(21000 km) 
or 
24 months16000 mi 
(26000 km) 
or 
30 monthsU46B10E0.book  Page 7  Tuesday, May 20, 2008  7:32 PM 
						

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-8
7
EAU18751
Removing and installing the 
panel The panel shown needs to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time the panel needs
to be removed and installed.
EAU19510
Panel A
To remove the panelPull the rear of the panel out, and then
slide the panel forward to release it in
the front.To install the panel
Secure the front of the panel, and then
push the rear of the panel in.
EAU19544
Checking the spark plugs The spark plugs are important engine
components, which are easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plugs should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
To remove a spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as shown,
with the spark plug wrench includ-
ed in the owner’s tool kit.
1. Panel A
1. Spark plug cap
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							PERIODIC MAINTENANCE AND ADJUSTMENT
7-9
7To check the spark plugs
1. Check that the porcelain insulator
around the center electrode on
each spark plug is a medium-to-
light tan (the ideal color when the
vehicle is ridden normally).
2. Check that all spark plugs installed
in the engine have the same color.
TIPIf any spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer checkthe vehicle.3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and replace
it if necessary.
To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.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 tight-
en it to the specified torque.
TIPIf 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 speci-fied torque as soon as possible.
4. Install the spark plug cap.
1. Spark plug wrench
Specified spark plug:
NGK/C6HSA
DENSO/U20FS-U1. Spark plug gapSpark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
U46B10E0.book  Page 9  Tuesday, May 20, 2008  7:32 PM 
						

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-10
7
EAU19681
Canister (for California only) This model is equipped with a canister
to prevent the discharging of fuel vapor
into the atmosphere. Before operating
this vehicle, make sure to check the fol-
lowing:

Check each hose connection.


Check each hose and canister for
cracks or damage. Replace if dam-
aged.


Make sure that the canister breath-
er is not blocked, and if necessary,
clean it.
EAU42102
Engine oil and oil filter ele-
ment The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart.
To check the engine oil level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, and then check the oil level
through the check window located
at the bottom-right side of the
crankcase.TIPThe engine oil should be between theminimum and maximum level marks.
1. Canister cover
2. Canister breather
3. Canister
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							PERIODIC MAINTENANCE AND ADJUSTMENT
7-11
74. If the engine oil is below the mini-
mum 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 replace-
ment)
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.
3. Remove the engine oil filler cap
and drain bolt to drain the oil from
the crankcase.
TIPSkip steps 4–6 if the oil filter element isnot being replaced.
4. Remove the oil filter element cover
by removing the screws.5. Remove and replace the oil filter
element and O-ring.
6. Install the oil filter element cover by
installing the screws, then tighten-
ing them to the specified torque.
1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
1. Engine oil filler cap
1. Engine oil drain bolt
1. Screw
2. Oil filter element cover
1. Oil filter element
2. O-ring
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							PERIODIC MAINTENANCE AND ADJUSTMENT
7-12
7
TIPMake sure that the O-ring is properlyseated.
7. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
8. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-tem have cooled down.NOTICE
ECA11620


In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a high-
er quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.


Make sure that no foreign mate-rial enters the crankcase.9. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
10. Turn the engine off, and then
check the oil level and correct it if
necessary.
Tightening torque:
Oil filter element cover screw:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Tightening torque:
Engine oil drain bolt:
34 Nm (3.4 m·kgf, 24 ft·lbf)
Recommended engine oil:
See page 9-1.
Oil quantity:
With oil filter element replacement:
1.60 L (1.69 US qt, 1.41 Imp.qt)
Without oil filter element replace-
ment:
1.40 L (1.48 US qt, 1.23 Imp.qt)
1.“CD” specification
2.“ENERGY CONSERVING II”
1
2
U46B10E0.book  Page 12  Tuesday, May 20, 2008  7:32 PM 
						

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-13
7
EAU32737
Cleaning the air filter element The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean or, if necessary, replace the air
filter element more frequently if you are
riding in unusually wet or dusty areas.
1. Remove the bolts and loosen the
air filter case joint clamp screw.
2. Disconnect the hoses from the air
filter case, and then remove the air
filter case.3. Remove the air filter case cover by
removing the screws.
4. Remove the air filter element by
removing the wing nut.1. Bolt
1. Air filter case joint clamp screw
2. Air filter case cover
3. Air filter case
1. Hose
2. Air filter case
1. Screw
1. Wing nut
2. Air filter element
U46B10E0.book  Page 13  Tuesday, May 20, 2008  7:32 PM 
						

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-14
7 5. Remove the sponge material from
the air filter element frame, clean it
with solvent, and then squeeze the
remaining solvent out. WARNING!
Use only a dedicated parts
cleaning solvent. To avoid the
risk of fire or explosion, do not
use gasoline or solvents with a
low flash point.
 [EWA10431]
 NOTICE:
To avoid damaging the foam
material, handle it gently and
carefully, and do not twist or
wring it.
 [ECA10511]
6. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.TIPThe air filter element should be wet butnot dripping.
7. Pull the sponge material over the
air filter element frame.
8. Insert the element into the air filter
case, and then tighten the wing
nut. NOTICE: Make sure that the
air filter element is properly
seated in the air filter case. Theengine should never be operat-
ed without the air filter element
installed, otherwise the pis-
ton(s) and/or cylinder(s) may
become excessively worn.
[ECA10481]
9. Install the air filter case cover by in-
stalling the screws.
10. Connect the hoses to the air filter
case.
11. Push the air filter case onto the air
filter case joint, and then tighten
the clamp screw.
12. Install the air filter case bolts.
1. Sponge material
2. Air filter element frame
Recommended oil:
Yamaha foam air filter oil or other 
quality foam air filter oil
U46B10E0.book  Page 14  Tuesday, May 20, 2008  7:32 PM 
						

							PERIODIC MAINTENANCE AND ADJUSTMENT
7-15
7
EAU21251
Carburetor The carburetor is an important part of
the engine and its emission control sys-
tem, which requires very sophisticated
adjustment. Therefore, carburetor ad-
justments should be left to Yamaha
dealer, who has the necessary profes-
sional knowledge and experience.
EAU44732
Checking the engine idling 
speed Check the engine idling speed and, if
necessary, have it adjusted by a
Yamaha dealer at the intervals speci-
fied in the periodic maintenance and lu-
brication chart.
EAU21382
Checking the throttle cable 
free play The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
Engine idling speed:
1350–1450 r/min
1. Throttle cable free play
U46B10E0.book  Page 15  Tuesday, May 20, 2008  7:32 PM