2014 YAMAHA SR400 brake pads

TABLE OF CONTENTSSAFETY INFORMATION................... 1-1
DESCRIPTION ................................... 2-1
Left view .......................................... 2-1
Right view ........................................ 2-2
Controls and instrument s................. 2-3
INSTRUMENT AND CONTROL
FUNCTIONS ....................................... 3-1
Main switch/steering lock................. 3-1
Indicator lights and warning lights ... 3-2
Speedometer unit ............................ 3-3
Tachometer ..................................... 3-4
Handlebar switches ......................... 3-4
Clutch lever...................................... 3-5
Shift pedal....... ............................. .... 3-6
Brake lever ...................................... 3-6
Brake pedal ..................................... 3-6
Fuel tank cap ................................... 3-7
Fuel.................................................. 3-7
Fuel tank breather/o verflow hose .... 3-9
Catalytic converter ........................... 3-9
Fuel cock ....................................... 3-10
Kickstarter....... ............................. .. 3-10
Decompression lever ... .................. 3-11
Seat ............................................... 3-11
Adjusting the shock absorber assemblies ................................. 3-12
Sidestand....................................... 3-12
Ignition circuit cut-of f system ......... 3-13 FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS ................................. 5-1
Starting the engine .......................... 5-1
Starting trouble ................................ 5-2
Shifting ............................................ 5-2
Tips for reducing fuel consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT ................................... 6-1
Owner’s tool kit................................ 6-2
Periodic maintenance chart for the
emission control system .............. 6-3
General maintenance and lubrication chart ........................... 6-4
Removing and installing the panel ............................................ 6-7
Checking the spark plug.................. 6-8
Engine oil and oil filter element ....... 6-9
Replacing the air filter element...... 6-12
Checking the engine idling speed ......................................... 6-13
Checking the throttle grip free
play ............................................ 6-13
Valve clearance............................. 6-13
Tires .............................................. 6-14 Spoke wheels ................................ 6-16
Adjusting the clutch lever free
play ............................................. 6-16
Adjusting the brake lever free play ............................................. 6-17
Adjusting the brake pedal height and free play............................... 6-18
Checking the shift pedal ................ 6-19
Brake light switches ....................... 6-19
Checking the front brake pads and rear brake shoes ................ 6-20
Checking the brake fluid level ........ 6-20
Changing the brake fluid ............... 6-21
Drive chain slack............................ 6-22
Cleaning and lubricating the drive chain ........................................... 6-23
Checking and lubricating the
cables ......................................... 6-24
Checking and lubricating the throttle grip and cable ................. 6-24
Checking and lubricating the brake and clutch levers .............. 6-25
Checking and lubricating the
brake pedal................................. 6-25
Checking and lubricating the
centerstand and sidestand ......... 6-26
Lubricating the swingarm pivots .... 6-26
Checking the front fork................... 6-27
Checking the steering .................... 6-27
Checking the wheel bearings......... 6-28
Battery ........................................... 6-282RD-9-E0.book 1 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

4-1
1
2
34
5
6
7
8
9
10
11
12
FOR YOUR SAFETY – PRE-OPERATION CHECKS
EAU15598
Inspect your vehicle each time you use it to make sure the vehi cle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11152
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel Check fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.
Check fuel tank breather hose for
obstructions, cracks or damage, and check
hose connection. 3-7, 3-9
Engine oil Check oil level in oil tank.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage. 6-9
Front brake Check operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check lever free play.
Adjust if necessary.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add specified brake fluid to specified level.
Check hydraulic system for leakage. 6-17, 6-20
Rear brake Check operation.
Check pedal free play.
Adjust if necessary. 6-18, 6-20
2RD-9-E0.book 1 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
1
2
3
4
567
8
9
10
11
12
EAU1770K
General maintenance an d lubrication chartNO. 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)
1 Air filter element Replace. Every 20000 km (12500 mi)
2Clutch Check operation.
Adjust. 
3 *Timing chain Check timing chain tensioner.
Adjust if necessary. 
4 *Decompression
system Check operation.
Adjust or replace cable.

5 *Front brake Check operation, fluid level and
vehicle for fluid leakage.
Adjust brake lever free play. 
Replace brake pads. Whenever worn to the limit
6 *Rear brake Check operation and adjust brake
pedal free play. 
Replace brake shoes. Whenever worn to the limit
7 *Brake hose Check for cracks or damage.
Check for correct routing and
clamping. 
Replace. Every 4 years
8 *Brake fluid Replace. Every 2 years
9 *Wheels Check runout, spoke tightness
and for damage.
Tighten spokes if necessary. 
10 *Tires Check tread depth and for
damage.
Replace if necessary.
Check air pressure.
Correct if necessary. 
2RD-9-E0.book 4 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
1
2
3
4
567
8
9
10
11
12
EAU22382
Checking the front brake pads
and rear brake shoes The front brake pads and the rear brake
shoes must be checked for wear at the
intervals specified in the periodic main-
tenance and lubrication chart.
EAU22432
Front brake pads
Each front brake pad is provided with
wear indicator grooves, which allow
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator grooves. If a brake
pad has worn to the point that the wear indicator grooves have almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
EAU22541
Rear brake shoes
The rear brake is provided with a wear
indicator, which allows you to check the
brake shoe wear without having to dis-
assemble the brake. To check the
brake shoe wear, check the position of
the wear indicator while applying the
brake. If a brake shoe has worn to the
point that the wear indicator reaches
the wear limit line, have a Yamaha
dealer replace the brake shoes as a
set.
EAU32346
Checking the brake fluid levelBefore riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
WARNING
EWA15991
Improper maintenance can result in
loss of braking ability. Observe
these precautions:
Insufficient brake fluid may al-
low air to enter the brake sys-
tem, reducing braking
1. Brake pad
2. Brake pad wear indicator groove1
2
1. Brake shoe wear indicator
2. Brake shoe wear limit line
12
1. Minimum level markSpecified brake fluid:
DOT 41
2RD-9-E0.book 20 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-21
1
2
3
4
56
7
8
9
10
11
12 performance.

Clean the filler cap before re-
moving. Use only DOT 4 brake
fluid from a sealed container.

Use only the specified brake flu-
id; otherwise, the rubber seals
may deteriorate, causing leak-
age.

Refill with the same type of
brake fluid. Adding a brake fluid
other than DOT 4 may result in a
harmful chemical reaction.

Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vaporlock.
NOTICE
ECA17641
Brake fluid may damage painted sur-
faces or plastic parts. Always cleanup spilled fluid immediately.
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 sys-
tem leakage; therefore, be sure to check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before
further riding.
EAU22724
Changing the brake fluid Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the brake master cylinder and caliper
as well as the brake hose replaced at
the intervals listed below or whenever
they are damaged or leaking.
Oil seals: Replace every two
years.

Brake hose: Replace every four
years.
2RD-9-E0.book 21 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
1
2
3
4
567
8
9
10
11
12
6. Pull the wheel axle out, and then
remove the collar and wheel.
NOTICE: Do not apply the brake
after the wheel and brake disc
have been removed, otherwise
the brake pads will be forced
shut.
[ECA11073]
To install the front wheel 1. Install the speedometer gear unit into the wheel hub so that the pro-
jections mesh with the slots.
2. Install the collar into the right side of the wheel hub.
3. Lift the wheel up between the fork legs.
TIPMake sure that there is enough space
between the brake pads before insert-
ing the brake disc and that the slot in
the speedometer gear unit fits over theretainer on the fork leg.
4. Insert the wheel axle from the left-hand side, and then install the
washer and axle nut.
5. Take the motorcycle off the center- stand so that the front wheel is on
the ground, and then put the side-
stand down.
6. Tighten the axle nut and the wheel axle holder nuts to their specified
torques
7. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
8. Connect the speedometer cable.
1. Slot
2. Speedometer gear unit
3. Projection
2
3
1
1. Retainer
2. Slot
1
2
Tightening torques:
Axle nut:104 Nm (10.4 m·kgf, 74 ft·lbf)
Wheel axle holder nut: 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
2RD-9-E0.book 36 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

10-1
1
2
3
4
5
6
7
8
91011
12
INDEX
AAir filter element, replacing ...................... 6-12
Auxiliary light bulb, replacing ................... 6-34BBattery ..................................................... 6-28
Brake and clutch levers, checking and lubricating .............................................. 6-25
Brake fluid, changing ............................... 6-21
Brake fluid level, checking ....................... 6-20
Brake lever ................................................ 3-6
Brake lever free play, adjusting ............... 6-17
Brake light switches ................................. 6-19
Brake pads and shoes, checking............. 6-20
Brake pedal ............................................... 3-6
Brake pedal, checking and lubricating ..... 6-25
Brake pedal height and free play, adjusting ................................................ 6-18CCables, checking and lubricating ............. 6-24
Care ........................................................... 7-1
Catalytic converter ..................................... 3-9
Centerstand and sidestand, checking and lubricating ....................................... 6-26
Clutch lever................................................ 3-5
Clutch lever free play, adjusting .............. 6-16DDecompression lever ............................... 3-11
Dimmer switch ........................................... 3-4
Drive chain, cleaning and lubricating ....... 6-23
Drive chain slack ..................................... 6-22EEngine break-in ......................................... 5-3
Engine idling speed, checking ................. 6-13
Engine oil and oil filter element.................. 6-9 Engine serial number ................................ 9-1
Engine stop switch .................................... 3-5
Engine trouble warning light ...................... 3-3
FFront fork, checking................................. 6-27
Fuel ........................................................... 3-7
Fuel cock ................................................. 3-10
Fuel consumption, tips for reducing .......... 5-3
Fuel level warning light .............................. 3-3
Fuel tank breather/overflow hose .............. 3-9
Fuel tank cap............................................. 3-7
Fuses, replacing ...................................... 6-29HHandlebar switches ................................... 3-4
Hazard switch............................................ 3-5
Headlight bulb, replacing......................... 6-31
High beam indicator light ........................... 3-3
Horn switch ............................................... 3-5IIdentification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-13
Indicator lights and warning lights ............. 3-2KKickstarter ............................................... 3-10MMain switch/steering lock .......................... 3-1
Maintenance and lubricatio
n, periodic....... 6-4
Maintenance, emission control system ..... 6-3
Matte color, caution ................................... 7-1
Model label ................................................ 9-2NNeutral indicator light ................................ 3-2PPanel, removing and installing .................. 6-7 Parking.......................................................5-4
Part locations .............................................2-1
Pass switch ................................................3-4
SSafety information ......................................1-1
Seat ......................................................... 3-11
Shifting .......................................................5-2
Shift pedal ..................................................3-6
Shift pedal, checking................................ 6-19
Shock absorber assemblies, adjusting ....3-12
Sidestand .................................................3-12
Spark plug, checking .................................6-8
Specifications.............................................8-1
Speedometer unit ......................................3-3
Starting the engine.....................................5-1
Starting the engine, trouble........................5-2
Steering, checking ................................... 6-27
Storage ......................................................7-3
Swingarm pivots, lubricating .................... 6-26TTachometer................................................3-4
Tail/brake light bulb, replacing ................. 6-32
Throttle grip and cable, checking and
lubricating ..............................................6-24
Throttle grip free play, checking............... 6-13
Tires ......................................................... 6-14
Tool kit .......................................................6-2
Troubleshooting ....................................... 6-39
Troubleshooting chart ..............................6-40
Turn signal indicator light ...........................3-2
Turn signal light bul b, replacing ............... 6-33
Turn signal switch ......................................3-4VValve clearance ....................................... 6-13
2RD-9-E0.book 1 ページ ２０１３年１１月２８日　木曜日　午後４時１８分