2014 YAMAHA SR400 check engine

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

SAFETY INFORMATION
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12 MENT.

Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.

Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.

Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories or cargo to your
motorcycle can adversely affect stabili-
ty and handling if the weight distribution
of the motorcycle is changed. To avoid
the possibility of an accident, use ex-
treme caution when adding cargo or
accessories to your motorcycle. Use
extra care when riding a motorcycle
that has added cargo or accessories.
Here, along with the information about
accessories below, are some general
guidelines to follow if loading cargo to
your motorcycle: The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloaded vehicle
could cause an accident.
When loading within this weight limit,
keep the following in mind:

Cargo and accessory weight
should be kept as low and close to
the motorcycle as possible. Se-
curely pack your heaviest items as
close to the center of the vehicle as
possible and make sure to distrib-
ute the weight as evenly as possi-
ble on both sides of the motorcycle
to minimize imbalance or instabili-
ty.

Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the motorcycle before
riding. Check accessory mounts
and cargo restraints frequently.
Properly adjust the suspension
for your load (suspension-ad- justable models only), and
check the condition and pres-
sure of your tires.
Never attach any large or heavy items to the handlebar, front
fork, or front fender. These
items, including such cargo as
sleeping bags, duffel bags, or
tents, can create unstable han-
dling or a slow steering re-
sponse.

This vehicle is not designed to
pull a trailer or to be attached to
a sidecar.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection to
Yamaha manufacture parts and acces-
sories or offer other modifications for
Yamaha vehicles. Yamaha is not in a
position to test the products that these
aftermarket companies produce.
Therefore, Yamaha can neither en-
Maximum load: 150 kg (331 lb)
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INSTRUMENT AND CONTROL FUNCTIONS
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EAU11081
High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11354
Fuel level warning light “ ”
This warning light comes on when the
fuel level drops below approximately
2.2 L (0.58 US gal, 0.48 Imp.gal). When
this occurs, refuel as soon as possible.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAU11485
Engine trouble warning light “ ”
This warning light comes on if a prob-
lem is detected in the electrical circuit
monitoring the engine. If this occurs,
have a Yamaha dealer check the
self-diagnosis system.
The electrical circuit of the warning light can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAU11631
Speedometer unitThe speedometer unit is equipped with
a speedometer, an odometer and a
tripmeter. The speedometer shows rid-
ing speed. The odometer shows the to-
tal distance traveled. The tripmeter
shows the distance traveled since it
was last set to zero with the reset knob.
The tripmeter can be used to estimate
the distance that can be traveled with a
full tank of fuel. This information will en-
able you to plan future fuel stops.1. Reset knob
2. Speedometer
3. Odometer
4. Tripmeter
123 4
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INSTRUMENT AND CONTROL FUNCTIONS
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EAU39453
Fuel tank breather/overflow
hoseBefore operating the motorcycle:
Check the fuel tank breather/over-
flow hose connection.

Check the fuel tank breather/over-
flow hose for cracks or damage,
and replace it if necessary.

Make sure that the end of the fuel
tank breather/overflow hose is not
blocked, and clean it if necessary.
EAU13434
Catalytic converterThis model is equipped with a catalytic
converter in the exhaust system.
WARNING
EWA10863
The exhaust system is hot after op-
eration. To prevent a fire hazard or
burns:
Do not park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.

Park the vehicle in a place
where pedestrians or children
are not likely to touch the hot
exhaust system.

Make sure that the exhaust sys-
tem has cooled down before do-
ing any maintenance work.

Do not allow the engine to idle
more than a few minutes. Long
idling can cause a build-up ofheat.
NOTICE
ECA10702
Use only unleaded gasoline. The use
of leaded gasoline will cause unre- pairable damage to the catalytic
converter.
1. Fuel tank breather/overflow hose
1
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INSTRUMENT AND CONTROL FUNCTIONS
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12 Yamaha dealer repair it if it does not
function properly.
EAU59340
Ignition circuit cut-off systemThe ignition circuit cut-off system (com-
prising the sidestand switch, clutch
switch and neutral switch) has the fol-
lowing functions.
It prevents starting when the trans-
mission is in gear and the sides-
tand is up, but the clutch lever is
not pulled.

It prevents starting when the trans-
mission is in gear and the clutch le-
ver is pulled, but the sidestand is
still down.

It cuts the running engine when the
transmission is in gear and the sid-
estand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.
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INSTRUMENT AND CONTROL FUNCTIONS
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With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is set to “
3. Turn the key on.
4. Shift the transmission into the neutral position.
5. Push the kick starter lever down.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the sidestand down.
Does the engine stall?
After the engine has stalled:
10. Move the sidestand up.
11. Keep the clutch lever pulled.
12. Push the kick starter lever down.
Does the engine start?
The system is OK. The motorcycle can be ridden.
YES NO YES NO YES NO
The neutral switch may not be working correctly.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
The clutch switch may not be working correctly.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The sidestand switch may not be working correctly.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The vehicle must be placed on the center-
stand during this inspection. If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING
”.
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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
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OPERATION AND IMPORTANT RIDING POINTS
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which could cause an accidentor injury.
EAU59360
TIPThis model is equipped with:
a lean angle sensor to stop the en-
gine in case of a turnover. In this
case, turn the key to “OFF” and
then to “ON”. Failing to do so will
prevent the engine from starting
even though the engine will crank
when pushing the kick starter lever
down.

an engine auto-stop system. The
engine stops automatically if left
idling for 20 minutes. If the engine
stops, simply push the kick starterlever down to restart the engine.
EAU59530
Starting the engineIn order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transmission is in the neutral
position.

The transmission is in gear with
the clutch lever pulled and the sid-
estand up.
See page 3-13 for more informa-
tion.
1. Turn the key to “ON” and set the engine stop switch to “ ”.
The engine trouble warning light
and fuel level warning light should
come on for a few seconds, then
go off.
NOTICE
ECA16712
If the warning light does not come
on initially when the key is turned to
“ON”, or if the warning light remains
on, see page 3-2 for the warning lightcircuit check.
2. Shift the transmission into the neu- tral position. The neutral indicator
light should come on. If not, ask a
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