2016 YAMAHA SR400 warning light

Periodic maintenance and adjustment
6-34
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6
7
8
9
10
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12
13
14 If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Remove the seat. (See page 3-13.)
3. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
4. Turn the key to “ON” and turn on the electrical circuit in question to
check if the device operates.
5. If a fuse immediately blows again, have a Yamaha dealer check the
electrical system.
1. Fuse box
1. Headlight fuse
2. Signaling system fuse
3. Ignition fuse
4. Backup fuse
5. Fuel injection system fuse
6. Parking lighting fuse
7. Spare fuse
1
12
3 4
5
7
6
Specified fuses: Signaling system fuse:
15.0 A
Headlight fuse: 15.0 A
Ignition fuse: 10.0 A
Backup fuse:
7.5 A
Fuel injection system fuse: 7.5 A
Parking lighting fuse: 7.5 A
2RD-28199-E1.book 34 ページ ２０１５年９月３日　木曜日　午後３時４２分

Periodic maintenance and adjustment
6-41
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14
the brake rod from the brake cam-
shaft lever.
5. Loosen the drive chain puller lock- nut and the drive chain slack ad-
justing bolt on both ends of the
swingarm.
6. Remove the axle nut and washer.
7. While supporting the rear wheel, pull the wheel axle out.
8. Remove the chain pullers and the spacer.
9. Push the wheel forward, and then remove the drive chain from the
rear sprocket.
TIP
The drive chain does not need to be
disassembled in order to remove and
install the wheel.
To install the rear wheel1. Install the spacer into left side of the wheel hub.
2. Install the chain pullers and the wheel by inserting the wheel axle
from the left side.
3. Install the drive chain onto the rear sprocket.
4. Install the washer and axle nut.
5. Install the brake rod onto the brake camshaft lever, and then install the
brake pedal free play adjusting nut
onto the brake rod.
6. Connect the brake torque rod to the brake shoe plate by installing
the bolt, washer and nut.
7. Adjust the drive chain slack. (See page 6-25.)
8. Take the motorcycle off the center- stand so that the rear wheel is on
the ground, and then put the side-
stand down.
9. Tighten the brake torque rod nut and axle nut to the specified
torques.
10. Adjust the brake pedal free play. (See page 6-20.)
WARNING
EWA10661
After adjusting the brake pedal free
play, check the operation of the
brake light.
1. Drive chain slack adjusting bolt
2. Drive chain puller locknut
3. Axle nut
4. Washer
1. Drive chain
3
2
14
1
Tightening torques:
Brake torque rod nut: 19 Nm (1.9 m·kgf, 14 ft·lbf)
Axle nut: 129 Nm (12.9 m·kgf, 92 ft·lbf)
2RD-28199-E1.book 41 ページ ２０１５年９月３日　木曜日　午後３時４２分

Periodic maintenance and adjustment
6-42
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14
EAU25852
Troubleshooting
Although 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 chart
represents a quick and easy procedure
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.
2RD-28199-E1.book 42 ページ ２０１５年９月３日　木曜日　午後３時４２分

Motorcycle care and storage
7-3
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13
14 corrosion.
After cleaning 1. Dry the motorcycle with a chamois
or an absorbing cloth.
2. Immediately dry the drive chain and lubricate it to prevent it from
rusting.
3. Use a chrome polish to shine chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved through polishing.)
4. To prevent corrosion, it is recom- mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed, surfaces.
5. Use spray oil as a universal clean- er to remove any remaining dirt.
6. Touch up minor paint damage caused by stones, etc.
7. Wax all painted surfaces.
8. Let the motorcycle dry completely before storing or covering it.
WARNING
EWA11132
Contaminants on the brakes or tires
can cause loss of control.
Make sure that there is no oil or
wax on the brakes or tires.
If necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or ac-
etone, and wash the tires with
warm water and a mild deter-
gent. Before riding at higher
speeds, test the motorcycle’s
braking performance and cor-
nering behavior.
NOTICE
ECA10801
Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.
Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.
Avoid using abrasive polishing
compounds as they will wear
away the paint.
TIP
Consult a Yamaha dealer for ad-
vice on what products to use.
Washing, rainy weather or humid
climates can cause the headlight
lens to fog. Turning the headlight
on for a short period of time will
help remove the moisture from the
lens.
2RD-28199-E1.book 3 ページ ２０１５年９月３日　木曜日　午後３時４２分

Specifications
8-3
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14
Turn signal indicator light: 1.7 W  1
Fuel level warning light: 3.0 W  1
Engine trouble warning light: 1.7 W  1
Fuse(s):
Main fuse:
30.0 A
Headlight fuse: 15.0 A
Signaling system fuse:
15.0 A
Ignition fuse: 10.0 A
Parking lighting fuse: 7.5 A
Fuel injection system fuse:
7.5 A
Backup fuse: 7.5 A
2RD-28199-E1.book 3 ページ ２０１５年９月３日　木曜日　午後３時４２分

10-1
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3
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5
6
7
8
9
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13
14
Index
A
Air filter element, replacing ................... 6-13
Auxiliary light bulb, replacing ................ 6-36
B
Battery................................................... 6-31
Brake and clutch levers, checking and lubricating ........................................... 6-28
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever .............................................. 3-7
Brake lever free play, adjusting............. 6-19
Brake light switches .............................. 6-22
Brake pads and shoes, checking .......... 6-22
Brake pedal ............................................. 3-7
Brake pedal, checking and
lubricating ........................................... 6-28
Brake pedal height and free play,
adjusting ............................................. 6-20
C
Cables, checking and lubricating .......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-11
Centerstand and sidestand, checking and lubricating .................................... 6-29
Clutch lever ............................................. 3-6
Clutch lever free play, adjusting ............ 6-18
D
Decompression lever ............................ 3-12
Dimmer switch ........................................ 3-5
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack ................................... 6-25
E
Engine break-in ....................................... 5-5
Engine idling speed, checking .............. 6-14
Engine oil and oil filter element ............... 6-9
Engine serial number .............................. 9-1
Engine stop switch .................................. 3-5
Engine trouble warning light.................... 3-3
F
Front fork, checking .............................. 6-30
Fuel ......................................................... 3-9
Fuel cock............................................... 3-11
Fuel consumption, tips for reducing ........ 5-5
Fuel level warning light ........................... 3-2
Fuel tank breather/overflow hose.......... 3-10
Fuel tank cap .......................................... 3-8
Fuses, replacing.................................... 6-33
H
Handlebar switches................................. 3-4
Hazard switch ......................................... 3-5 Headlight bulb, replacing ...................... 6-35
High beam indicator light ........................ 3-2
Horn switch ............................................. 3-5
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-15
Indicator lights and warning lights .......... 3-2
K
Kickstarter ............................................ 3-12
M
Main switch/steering lock ....................... 3-1
Maintenance and lubrication, periodic .... 6-4
Maintenance, emission control system... 6-3
Matte color, caution ................................ 7-1
Model label ............................................. 9-2
N
Neutral indicator light .............................. 3-2
P
Panel, removing and installing ............... 6-7
Parking ................................................... 5-6
Part locations .......................................... 2-1
Pass switch ............................................ 3-5
S
Safety information .................................. 1-1
Seat ...................................................... 3-13
Shifting ................................................... 5-3
Shift pedal .............................................. 3-6
Shift pedal, chec
king ............................ 6-21
Shock absorber assemblies, adjusting ............................................. 3-13
Sidestand ............................................. 3-14
Spark plug, checking .............................. 6-8
Specifications ......................................... 8-1
Speedometer unit ................................... 3-3
Starting the engine ................................. 5-2
Starting the engine, trouble .................... 5-3
Steering, checking ................................ 6-30
Storage ................................................... 7-4
Swingarm pivots, lubricating ................. 6-29
T
Tachometer ............................................ 3-4
Tail/brake light bulb, replacing .............. 6-37
Throttle grip and cable, checking and
lubricating ........................................... 6-27
Throttle grip free play, checking ........... 6-14
Tires ..................................................... 6-15
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-42
Troubleshooting chart ........................... 6-43
Turn signal indicator light ....................... 3-2
2RD-28199-E1.book 1 ページ ２０１５年９月３日　木曜日　午後３時４２分