Page 48 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-5
6
EAU36771
TIP
Air filter
This model’s air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with com-
pressed air to avoid damaging it.
The air filter element needs to be replaced more frequently when riding in unusually wet or dusty areas.
22 Engine oilChange.
Check oil level and vehicle for oil
leakage.√√√√√√
23Engine oil filter car-
tridgeReplace.√√√
24*Transfer case oilCheck oil level.√√
Change.√√√
25*Front and rear brake
switchesCheck operation.√√√√√√
26Moving parts and
cablesLubricate.√√√√√
27*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.√√√√√
28*Lights, signals and
switchesCheck operation.
Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)10000 km
(6000 mi)20000 km
(12000 mi)30000 km
(18000 mi)40000 km
(24000 mi)U5C4E3E0.book Page 5 Tuesday, September 16, 2008 10:25 AM
Page 50 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-7
6
EAU19642
Checking the spark plugs The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they 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.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
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.
Specified spark plug:
NGK/DPR8EA-9
DENSO/X24EPR-U91. Spark plug gapSpark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf, 12.7 ft·lbf)
U5C4E3E0.book Page 7 Tuesday, September 16, 2008 10:25 AM
Page 51 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
6
EAU38368
Engine oil and oil filter car-
tridge The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication 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. Remove the rider seat. (See page
3-16.)
3. Start the engine, warm it up until
the engine oil has reached a nor-
mal temperature of 60 °C (140 °F),
let it continue to idle for ten sec-
onds, and then turn the engine off.TIPTo achieve the proper engine oil tem-
perature for an accurate oil level read-
ing, the engine must have firstcompletely cooled down, and then
warmed up again for several minutes to
normal operating temperature.
4. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the engine oil dipstick clean, insert
it back into the oil filler hole (with-
out screwing it in), and then re-
move it again to check the oil level.TIPThe engine oil should be between theminimum and maximum level marks.
5. If the engine oil is at or below the
minimum level mark, add sufficient
oil of the recommended type to
raise it to the correct level.
TIPWhen adding oil, be careful not to over-
fill the engine oil tank; the oil level rises
faster starting from the half level portionon the dipstick.
6. Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
7. Install the rider seat.
1. Engine oil filler cap
1. Maximum level mark
2. Minimum level mark
3. Engine oil dipstick
U5C4E3E0.book Page 8 Tuesday, September 16, 2008 10:25 AM
Page 52 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-9
6
NOTICE
ECA10900
Make sure that the oil filler cap is se-
curely tightened, otherwise oil may
seep out when the engine is run-ning.
To change the engine oil (with or
without oil filter cartridge replace-
ment)
1. Place the vehicle on a level sur-
face.
2. Remove the rider seat. (See page
3-16.)
3. Start the engine, warm it up for
several minutes, and then turn it
off.
4. Place an oil pan under the oil tank
to collect the used oil.
5. Remove the engine oil filler cap
and drain bolt to drain the oil from
the oil tank.6. Place an oil pan under the engine
to collect the used oil.
7. Remove engine oil drain bolts A
and B to drain the oil from the
crankcase.
TIPSkip steps 8–10 if the oil filter cartridgeis not being replaced.
8. Remove the oil filter cartridge with
an oil filter wrench.TIPAn oil filter wrench is available at aYamaha dealer.
9. Apply a thin coat of clean engine
oil to the O-ring of the new oil filter
cartridge.
1. Engine oil drain bolt (oil tank)
1. Engine oil drain bolt A (crankcase)
2. Engine oil drain bolt B (crankcase)
1. Oil filter cartridge
2. Oil filter wrench
U5C4E3E0.book Page 9 Tuesday, September 16, 2008 10:25 AM
Page 53 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6
TIPMake sure that the O-ring is properlyseated.
10. Install the new oil filter cartridge
with an oil filter wrench, and then
tighten it to the specified torque
with a torque wrench.11. Install the engine oil drain bolts,
and then tighten them to the spec-
ified torques.12. Pour only 2.5 L (2.6 US qt,
2.2 Imp.qt) of the specified amount
of recommended engine oil
through the filler hole, insert the
dipstick, and then tighten the oil fill-
er cap.
13. Start the engine, rev it several
times, and then turn it off.
14. Remove the engine oil filler cap,
and then gradually fill the oil tank
with the remaining oil quantity
while regularly checking the oil lev-
el on the dipstick.
TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-tem have cooled down.
1. O-ring
1. Oil filter cartridge
2. Torque wrench
Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf, 12 ft·lbf)
Tightening torques:
Engine oil drain bolt A (crankcase):
43 Nm (4.3 m·kgf, 31 ft·lbf)
Engine oil drain bolt B (crankcase):
43 Nm (4.3 m·kgf, 31 ft·lbf)
Engine oil drain bolt (oil tank):
43 Nm (4.3 m·kgf, 31 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter cartridge replace-
ment:
4.10 L (4.33 US qt, 3.61 Imp.qt)
With oil filter cartridge replacement:
4.90 L (5.18 US qt, 4.31 Imp.qt)
U5C4E3E0.book Page 10 Tuesday, September 16, 2008 10:25 AM
Page 54 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
6
NOTICE
ECA15080
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 oil tank.
15. Install the engine oil filler cap.16. 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.
17. Turn the engine off, and then
check the oil level and correct it if
necessary.
18. Install the rider seat.
EAU20051
Transfer case oil The transfer case must be checked for
oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the vehicle. In addi-
tion, the transfer case oil level should
be checked and the oil must be
changed by a Yamaha dealer at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.
1.“CD” specification
2.“ENERGY CONSERVING II”
1
2
U5C4E3E0.book Page 11 Tuesday, September 16, 2008 10:25 AM
Page 55 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-12
6
EAU36762
Air filter element The air filter element must be replaced
at the intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer replace the air
filter element.
EAU21382
Checking the throttle cable
free play The throttle cable free play should mea-
sure 4.0–6.0 mm (0.16–0.24 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Throttle cable free play
U5C4E3E0.book Page 12 Tuesday, September 16, 2008 10:25 AM
Page 61 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6
EAU23040
Drive belt slack The drive belt slack should be checked
and adjusted at the intervals specified
in the periodic maintenance and lubri-
cation chart.
EAU38410
To check the drive belt slack
1. Place the vehicle on the sidestand.
2. Note the current position of the
drive belt using the marks near the
drive belt check hole.TIPThe marks near the drive belt checkhole are 5.0 mm (0.2 in) apart.3. Note the position of the drive belt
with a force of 45 N (4.5 kgf, 10 lbf)
applied to the belt with a belt ten-
sion gauge as shown.
TIPA belt tension gauge is available at aYamaha dealer.
4. Calculate the drive belt slack by
subtracting the measurement not-
ed in step 2 from the measurement
noted in step 3.
5. If the drive belt slack is incorrect,
have a Yamaha dealer adjust it.
EAU23101
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
sheath may interfere with proper ca-
ble operation and will cause the in-
ner cable to rust. Replace a
damaged cable as soon as possible
to prevent unsafe conditions.
[EWA10721]
1. Drive belt
2. Marks
3. Drive belt slack
1. Belt tension gauge
Drive belt slack:
7.5–13.0 mm (0.30–0.51 in)
Recommended lubricant:
Engine oil
U5C4E3E0.book Page 18 Tuesday, September 16, 2008 10:25 AM
