2018 YAMAHA NIKEN Owners Manual

Periodic maintenance an d a djustment
6-7
6
21 *Front fork • Check operation and for oil leak-
age.
• Replace if necessary. √√√√
22 *Shock a
bsor ber as-
sem bly • Check operation and for oil leak-
age.
• Replace if necessary. √√√√
23 *Rear suspension re-
lay arm an
d con-
nectin g arm
pivotin g points • Check operation.
√√√√
24 En gine oil • Change (warm engine before
draining).
• Check oil level and vehicle for oil leakage. √√√√√√
25 En
gine oil filter car-
tri dg e •Replace.
√√√
26 *Coolin g system • Check coolant level and vehicle
for coolant leakage. √√√√√
• Change. Every 3 years
27 *Front an
d rear
b rake switches • Check operation.
√√√√√√
28 *Movin
g parts an d
ca bles • Lubricate.
√√√√√
29 *Throttle g
rip hous-
in g an d ca ble • Check operation and free play.
• Adjust the throttle cable free play
if necessary.
• Lubricate the throttle grip housing and cable. √√√√√
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
AN
NUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
UBD5E0E0.book Page 7 Wednesday, April 25, 2018 2:23 PM

Periodic maintenance an d a djustment
6-8
6
EAU72800
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.
 Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.30 *Li
ghts, si gnals an d
switches • Check operation.
• Adjust headlight beam.
√√√√√√
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)UBD5E0E0.book Page 8 Wednesday, April 25, 2018 2:23 PM

Periodic maintenance an d a djustment
6-9
6
EAU18752
Removin g an d installin g the
panelThe 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.
EAU84640
Panel A
To remove the panel1. Remove the quick fastener and
bolt. 2. Pull the panel outward as shown.
To install the panel
1. Place the panel in the original po- sition.
2. Place the radiator hose stay in the original position as shown. 3. Install the bolt and quick fastener.
1. Panel A
1
1. Quick fastener
2. Bolt
1
2
1. Panel A
2. Stay
1
2
UBD5E0E0.book Page 9 Wednesday, April 25, 2018 2:23 PM

Periodic maintenance an d a djustment
6-10
6
EAU19653
Checkin g the spark plu gsThe 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.
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
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 back an d 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/MR9K91. Spark plug gapSpark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtenin g 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
CanisterThis 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.
EAU1990E
Engine oilThe engine oil level should be checked
regularly. In addition, the oil must be
changed and the oil filter cartridge re-
placed at the intervals specified in the
periodic maintenance chart.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 add itives. 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 lab eled
“ENERGY CONSERVING II” or
hi gher.
 Make sure that no forei gn mate-
rial enters the crankcase.
To check the en gine oil level
1. After warming up the engine, wait a few minutes for the oil to settle.
2. With the vehicle on a level surface, hold it upright for an accurate
reading.
3. Look at the check window located at the bottom-right side of the
crankcase.TIPThe engine oil should be between the
minimum and maximum level marks.
1. Canister
2. Canister breather
1
2
Recommen ded en gine oil:
See page 8-1.
Oil quantity: Oil change:2.40 L (2.54 US qt, 2.11 Imp.qt)
With oil filter removal: 2.70 L (2.85 US qt, 2.38 Imp.qt)
1. Engine oil filler cap
2. O-ring
3. Engine oil level check window
4. Maximum level mark
5. Minimum level mark
21
3
45
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Periodic maintenance an d a djustment
6-12
6 4. If the engine oil is at or below the
minimum level mark, remove the
oil filler cap and add oil.
5. Check the engine oil filler cap O- ring. Replace if damaged.
6. Install the engine oil filler cap.
To chan ge the en gine oil (an d filter)
1. Start the engine and allow it to idle for a few minutes to warm up the
oil, and then stop the engine.
2. Place an oil pan under the engine to collect the used oil.
3. Remove the engine oil filler cap, and then the engine oil drain bolt
and gasket.
TIPSkip steps 4–6 if the oil filter cartridge
is not being replaced.4. Remove the oil filter cartridge withan oil filter wrench.
TIPAn oil filter wrench is available at a
Yamaha dealer.5. Apply a thin coat of clean engine oil to the O-ring of the new oil filter
cartridge.TIPMake sure that the O-ring is properly
seated.6. Install the new oil filter cartridge,and then tighten to the specified
torque.
1. Engine oil filler cap
2. O-ring
21
1. Engine oil drain bolt
2. Gasket
1. Oil filter wrench
2. Oil filter cartridge
1
2
2
1
1. O-ring
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Periodic maintenance an d a djustment
6-13
6
7. Install the engine oil drain bolt with a new gasket, and then tighten the
bolt to the specified torque.
8. Pour the specified amount of the recommended oil into the crank-
case.
TIPUsing a funnel is recommended.
9. After checking the engine oil fillercap O-ring, install the filler cap.TIPWipe off any spilled oil before starting
the engine.10. Start the engine and let it idle while checking for oil leaks.TIPIf any oil leaks are found which you
cannot fix, have the vehicle inspected.11. Stop the engine, wait a few min-utes for the oil to settle, and then
check the oil level one last time.
NOTICE: Do not operate the ve-
hicle until you know that the en-
g ine oil level is sufficient.
[ECA10012] EAUS1203
CoolantThe coolant level should be checked
regularly. In addition, the coolant must
be changed at the intervals specified in
the periodic maintenance chart.TIPIf genuine Yamaha coolant is not avail-
able, use an ethylene glycol antifreeze
containing corrosion inhibitors for alu-
minum engines and mix with distilled
water at a 1:1 ratio.
EAU20097
To check the coolant level
Since the coolant level varies with en-
gine temperature, check when the en-
gine is cold.
1. Park the vehicle on a level surface.
1. Torque wrenchTi ghtenin g torque:
Oil filter cartridge: 17 N·m (1.7 kgf·m, 13 lb·ft)
Ti ghtenin g torque:
Engine oil drain bolt:
43 N·m (4.3 kgf·m, 32 lb·ft)1
Recommen ded coolant:
YAMALUBE coolant
Coolant quantity: Coolant reservoir (max level mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.93 L (2.04 US qt, 1.70 Imp.qt)
UBD5E0E0.book Page 13 Wednesday, April 25, 2018 2:23 PM

Periodic maintenance an d a djustment
6-14
6 2. With the vehicle in an upright posi-
tion, look at the coolant level in the
reservoir.
3. If the coolant is at or below the minimum level mark, remove the
coolant reservoir cap. WARNING!
Remove only the coolant reser-
voir cap. Never attempt to re-
move the ra diator cap when the
en gine is hot.
[EWA15162]
4. Add coolant to the maximum level
mark. NOTICE: If coolant is not
availa ble, use d istilled water or
soft tap water instea d. Do not
use har d water or salt water
since it is harmful to the en gine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possi ble, other-
wise the coolin g system will not
b e protecte d a gainst frost an d
corrosion. If water has been
a dde d to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possi ble, otherwise the
effectiveness of the coolant will
b e re duce d.
[ECA10473]
5. Install the coolant reservoir cap.
EAU33032
Chan gin g the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove the ra diator cap when the en gine is
hot.
[EWA10382]
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
2
3
1
1. Coolant reservoir cap
1
UBD5E0E0.book Page 14 Wednesday, April 25, 2018 2:23 PM