
Periodic maintenance an d a djustment
6-10
6
EAU19653
Checkin g the spark plu gs
The spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and depos- its will cause any spark plug to slowly
erode, they should be removed and
checked in accordance with the peri-
odic maintenance and lubrication
chart. In addition, the condition of the
spark plugs can reveal the condition of
the engine.
The porcelain insulator around the
center 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 engine should have the same
color. If any spark plug shows a dis-
tinctly different color, the engine could
be operating improperly. Do not at-
tempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If a spark plug shows signs of elec-
trode 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.
TIP
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.
NOTICE
ECA10841
Do not use any tools to remove or in-
stall the spark plu
g cap, otherwise
the i gnition coil coupler may get
d amag ed . The spark plu g cap may
b e difficult to remove because the
ru bber seal on the en d of the cap fits
ti g htly. To remove the spark plu g
cap, simply twist it b ack and forth
while pullin g it out; to install it, twist
it back an d forth while pushin g it in.
Specifie d spark plu g:
NGK/CPR8EA-9
1. Spark plug gap
Spark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtening torque:
Spark plug: 13 N·m (1.3 kgf·m, 9.6 lb·ft)
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Periodic maintenance an d a djustment
6-11
6
EAU36112
Canister
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
following:
Check each hose connection.
Check each hose and canister for
cracks or damage. Replace if
damaged.
Make sure that the canister
breather is not blocked, and if
necessary, clean it.
EAU19889
Engine oil an d oil filter car-
tri dge
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 en gine oil level
1. Place the vehicle on the center- stand. 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 locat-
ed at the bottom-left side of the
crankcase.
TIP
The engine oil should be between the
minimum and maximum level marks.
1. Canister
2. Canister breather
1
2
1. Engine oil level check window
2. Engine oil filler cap
3. Maximum level mark
4. Minimum level mark
31
4
2
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Periodic maintenance an d a djustment
6-12
6 4. 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.
TIP
Check the O-ring for damage, and re-
place it if necessary.
To chan ge the en gine oil (with or
without oil filter cartri dge replace-
ment) 1. Place the vehicle on a level surfa- ce.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Place an oil pan under the engine to collect the used oil.
4. Remove the engine oil filler cap, the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
TIP
Skip steps 5–7 if the oil filter cartridge
is not being replaced.
5. Remove the oil filter cartridge withan oil filter wrench.
TIP
An oil filter wrench is available at a
Yamaha dealer.
6. Apply a thin coat of clean engine oil to the O-ring of the new oil filter
cartridge.
1. Engine oil filler cap
2. O-ring
2
11. Engine oil drain bolt
2. Gasket
1. Oil filter wrench
2. Oil filter cartridge
1
2
1
2
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Periodic maintenance an d a djustment
6-13
6
TIP
Make sure that the O-ring is properly
seated.
7. Install the new oil filter cartridge,
and then tighten it to the specified
torque with a torque wrench.
8. Install the engine oil drain bolt and its new gasket, and then tighten
the bolt to the specified torque.
9. Refill with the specified amount of the recommended engine oil.
TIP
Be sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
ECA11621
In or der to prevent clutch slip-
pa ge (since the en gine oil also
lu bricates the clutch), do not
mix any chemical additives. Do
not use oils with a diesel speci-
fication of “CD” or oils of a hi gh-
er quality than specified . In
a dd ition, do not use oils la bele d
“ENERGY CONSERVING II” or
hi gher.
Make sure that no forei gn mate-
rial enters the crankcase.
10. Check the O-ring for damage, and replace it if necessary.
11. Install and tighten the engine oil filler cap.
1. O-ring
1. Torque wrench
Tightening torque:
Oil filter cartridge: 17 N·m (1.7 kgf·m, 13 lb·ft)
Ti ghtening torque:
Engine oil drain bolt: 43 N·m (4.3 kgf·m, 32 lb·ft)
1
Recommen ded en gine oil:
See page 8-1.
Oil quantity: Oil change:
3.80 L (4.02 US qt, 3.34 Imp.qt)
With oil filter removal: 4.00 L (4.23 US qt, 3.52 Imp.qt)
1. Engine oil filler cap
2. O-ring
2
1
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Periodic maintenance an d a djustment
6-14
6 12. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
TIP
After the engine is started, the engine
oil level warning light should go off if
the oil level is sufficient.
NOTICE
ECA10402
If the oil level warnin g li ght flickers
or remains on even if the oil level is
correct, immed iately turn the en gine
off an d have a Yamaha d ealer check
the vehicle.
13. Turn the engine off, and then check the oil level and correct it if
necessary.
EAU20017
Final gear oil
The final gear 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 ad-
dition, the final gear oil level must be
checked and the oil changed as fol-
lows at the intervals specified in the
periodic maintenance and lubrication
chart.
WARNING
EWA10371
Make sure that no forei gn mate-
rial enters the final gear case.
Make sure that no oil gets on
the tire or wheel.
To check the final gear oil level
1. Place the vehicle on the center- stand.
TIP
Make sure that the vehicle is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can re-
sult in a false reading.
2. Remove the final gear oil filler boltand its gasket, and then check the
oil level in the final gear case.
TIP
The oil level should be at the brim of
the filler hole.
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Periodic maintenance an d a djustment
6-15
6
3. If the oil is below the brim of the
filler hole, add sufficient oil of the
recommended type to raise it to
the correct level.
4. Check the gasket for damage, and replace it if necessary.
5. Install the final gear oil filler bolt and its gasket, and then tighten
the bolt to the specified torque.
To chan ge the final gear oil
1. Place the vehicle on a level surfa- ce.
2. Place an oil pan under the final gear case to collect the used oil.
3. Remove the final gear oil filler bolt, the final gear oil drain bolt and
their gasket to drain the oil from
the final gear case. 4. Install the final gear oil drain bolt
and its new gasket, and then tight-
en the bolt to the specified torque.
5. Refill with the recommended final gear oil to the brim of the filler
hole.
6. Check the oil filler bolt gasket for damage, and replace it if neces-
sary.
7. Install the oil filler bolt and its gas- ket, and then tighten the bolt to
the specified torque.
8. Check the final gear case for oil leakage. If oil is leaking, check for
the cause.
1. Final gear oil filler bolt
2. Gasket
3. Correct oil level
Tightening torque:
Final gear oil filler bolt:
23 N·m (2.3 kgf·m, 17 lb·ft)
3
2
1
1. Final gear oil filler bolt
2. Gasket
3. Final gear oil drain bolt
Tightenin g torque:
Final gear oil drain bolt:
23 N·m (2.3 kgf·m, 17 lb·ft)
Recommen ded final gear oil:
Yamaha genuine shaft drive gear oil
SAE 80W-90 API GL-5
Oil quantity:
0.20 L (0.21 US qt, 0.18 Imp.qt)
Ti ghtenin g torque:
Final gear oil filler bolt: 23 N·m (2.3 kgf·m, 17 lb·ft)
1
2
32
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Periodic maintenance an d a djustment
6-27
6
er the
boilin g point of the flui d
an d may result in vapor lock,
an d d irt may clo g the ABS hy-
d raulic unit valves.
NOTICE
ECA17641
Brake flui d may damag e painte d
surfaces or plastic parts. Always
clean up spille d flui d imme diately.
The brake or clutch fluid reservoir dia-
phragm will lose its shape from the
negative pressure if the fluid level goes
down too far. Be sure to return the dia-
phragm to its original shape before in-
stalling it into the brake or clutch fluid
reservoir.
As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. A low clutch
fluid level may indicate clutch system
leakage; therefore, be sure to check
the clutch system for leakage. If the
brake or clutch fluid level goes down
suddenly, have a Yamaha dealer check
the cause before further riding.
EAU22754
Chan gin g the brake an d
clutch flui ds
Have a Yamaha dealer change the
brake and clutch fluids at the intervals
specified in the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake and clutch
master cylinders and calipers as well
as the brake and clutch hoses replaced
at the intervals listed below or whenev-
er they are damaged or leaking.
Oil seals: Replace every two
years.
Brake and clutch hoses: Replace
every four years.
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Periodic maintenance an d a djustment
6-31
6
EAUM1653
Lub ricatin g the swin garm piv-
ots
The swingarm pivots must be lubricat-
ed by a Yamaha dealer at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU23273
Checkin g the front fork
The condition and operation of the
front fork must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the con dition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation 1. Place the vehicle on a level surfa- ce and hold it in an upright posi-
tion. WARNING! To avoi d injury,
securely support the vehicle so
there is no dan ger of it fallin g
over.
[EWA10752]
2. While applying the front brake, push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
NOTICE
ECA10591
If any damag e is foun d or the front
fork does not operate smoothly,
have a Yamaha d ealer check or re-
pair it.
Recommen ded lu bricant:
Lithium-soap-based grease
UB88E1E0.book Page 31 Monday, July 10, 2017 2:46 PM