Page 71 of 104
Periodic maintenance and adjustment6-19
1
2
3
4
567
8
9
10
11
12
EAU37914
Checking the br ake lever free
playThere should be no free play at the
brake lever end. If there is free play,
have a Yamaha dealer inspect the
brake system.
WARNING
EWA14212
A soft or spongy feeling in the brake
lever can indicate the presence of air
in the hydraulic system. If there is air
in the hydraulic system, have a
Yamaha dealer bleed the system be-
fore operating the vehicle. Air in the
hydraulic system will diminish the
braking performance, which may re- sult in loss of control and an acci-
dent.
EAU36505
Brake light switchesThe brake light should come on just be-
fore braking takes effect. The brake
light is activated by switches connected
to the brake lever and brake pedal.
Since the brake light switches are com-
ponents of the anti-lock brake system,
they should only be serviced by a
Yamaha dealer.
1. No brake lever free play
1
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Page 82 of 104
Periodic maintenance and adjustment
6-30
1
2
3
4
56
7
8
9
10
11
12
EAU73340
Replacing the fusesFuse box 1 is located behind the right
side panel.
To access fuse box 1, remove and in-
stall the right side panel and rubber
cover as follows. 1. Remove the nuts and bolt.
2. Pull the right side panel and rubber cover off as shown. 3. Place the panel and rubber cover
in the original position.
4. Install the nuts and bolt.
The main fuse, the fuel injection system
fuse, and fuse box 2 are located under
the seat. (See page 3-23.)1. Right side panel
2. Nut
3. Bolt
1
3
2
1. Fuse box 1
2. Rubber cover
1
2
1. Ignition fuse
2. ABS control unit fuse
3. Parking lighting fuse
4. Auxiliary fuse 1
5. Signaling system fuse
6. Headlight fuse
7. Spare fuse
7
1 2 3 4 5 6
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Periodic maintenance and adjustment
6-32
1
2
3
4
56
7
8
9
10
11
12 3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system.
EAU34386
Replacing the headlight bulbThis model is equipped with a halogen
bulb headlight. If the headlight bulb
burns out, replace it as follows.NOTICE
ECA10651
Take care not to damage the follow-
ing parts:
Headlight bulb
Do not touch the glass part of
the headlight bulb to keep it free
from oil, otherwise the transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol or thinner.
Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of awattage higher than specified.
Specified fuses:
Main fuse:50.0 A
Headlight fuse:
15.0 A
Signaling system fuse: 7.5 A
Ignition fuse: 15.0 A
Parking lighting fuse:
7.5 A
Radiator fan motor fuse: 15.0 A
ABS motor fuse: 30.0 A
ABS solenoid fuse:
15.0 A
Fuel injection system fuse: 10.0 A
ABS control unit fuse: 7.5 A
Backup fuse:
7.5 A
Electronic thrott le valve fuse:
7.5 A
Auxiliary fuse 1: 2.0 A
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Page 85 of 104
Periodic maintenance and adjustment6-33
1
2
3
4
567
8
9
10
11
12
1. Remove the headlight unit by re-
moving the bolts on each side.
2. Disconnect the headlight coupler, and then remove the headlight
bulb cover. 3. Unhook the headlight bulb holder,
and then remove the burnt-out
bulb.
4. Place a new headlight bulb into po- sition, and then secure it with the
bulb holder.
5. Install the headlight bulb cover, and then connect the coupler.
6. Install the headlight unit by install- ing the bolts.
7. Have a Yamaha dealer adjust the headlight beam if necessary.
1. Do not touch the glass part of the bulb.
1. Bolt
1
1. Headlight bulb cover
2. Headlight coupler
1. Headlight bulb holder
2. Headlight bulb
1 2
1
2
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Page 86 of 104
Periodic maintenance and adjustment
6-34
1
2
3
4
56
7
8
9
10
11
12
EAU45226
Replacing the auxi liary light
bulbIf the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit. (See page 6-32.)
2. Remove the auxiliary light bulb socket (together with the bulb) by
pulling it out.
3. Remove the burnt-out bulb by pull- ing it out. 4. Insert a new bulb into the socket.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the headlight unit.
EAU70540
Brake/tail lightThis model is equipped with an
LED-type brake/tail light.
If the brake/tail light does not come on,
have a Yamaha dealer check it.
1. Auxiliary light bulb socket
1
1. Auxiliary light bulb
1
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Page 87 of 104
Periodic maintenance and adjustment6-35
1
2
3
4
567
8
9
10
11
12
EAU24205
Replacing a turn signal light
bulb1. Remove the turn signal light lens by removing the screw.
2. Remove the burnt-out bulb by pushing it in and turning it counter-
clockwise. 3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screw. NOTICE: Do not over-
tighten the screw, otherwise the
lens may break.
[ECA11192] EAU24331
License plate lightIf the license plate light does not come
on, have a Yamaha dealer check the
electrical circuit or replace the bulb.
1. Turn signal light lens
2. Screw
1
2
1. Turn signal light bulb
1
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Page 88 of 104

Periodic maintenance and adjustment
6-36
1
2
3
4
56
7
8
9
10
11
12
EAU67131
Supporting the motorcycleSince this model is not equipped with a
centerstand, use maintenance stands
when removing the front or rear wheel
or when performing other maintenance
that requires the motorcycle to stand up
right.
Check that the motorcycle is in a stable
and level position before starting any
maintenance.
EAU25872
TroubleshootingAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
1. Maintenance stand (example)
1
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7-1
1
2
3
4
5
678
9
10
11
12
Motorcycle care and storage
EAU37834
Matte color cautionNOTICE
ECA15193
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-ished parts.
EAU26015
CareWhile the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a motor-
cycle. Frequent and proper care does
not only comply with the terms of the
warranty, but it will also keep your mo-
torcycle looking good, extend its life
and optimize its performance.
Before cleaning 1. Cover the muffler outlet with a plastic bag after the engine has
cooled down.
2. Make sure that all caps and covers as well as all el ectrical couplers
and connectors, including the
spark plug caps, are tightly in-
stalled.
3. Remove extremely stubborn dirt, like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod- ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and de-
greaser off with water.
Cleaning
NOTICE
ECA10773
Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
rosion protection spray.
Improper cleaning can damage
plastic parts (such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc.) and
the mufflers. Use only a soft,
clean cloth or sponge with wa-
ter to clean plastic. However, if
the plastic parts cannot be thor-
oughly cleaned with water, di-
luted mild detergent with water
may be used. Be sure to rinse
UB90E2.book 1 ページ 2018年6月5日 火曜日 午後5時40分