2014 YAMAHA SR400 tire pressure
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FOR YOUR SAFETY – PRE-OPERATION CHECKS
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Clutch Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary. 6-16
Throttle grip Make sure that operation is smooth.
Check throttle grip free play.
If necessary, have Yamaha dealer adjust th
rottle grip free play and lubricate cable
and grip housing. 6-13, 6-24
Control cables Make sure that operation is smooth.
Lubricate if necessary. 6-24
Drive chain Check chain slack.
Adjust if necessary.
Check chain condition.
Lubricate if necessary. 6-22, 6-23
Wheels and tires Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary. 6-14, 6-16
Shift pedal Make sure that operation is smooth.
Correct if necessary. 6-19
Brake pedal Make sure that operation is smooth.
Lubricate pedal pivoting point if necessary. 6-25
Brake and clutch levers Make sure that operation is smooth.
Lubricate lever pivoting points if necessary. 6-25
Centerstand, sidestand Make sure that operation is smooth.
Lubricate pivots if necessary. 6-26
Chassis fasteners Make sure that all nuts, bolts and screws are properly tightened.
Tighten if necessary. —
Instruments, lights, signals
and switches Check operation.
Correct if necessary.
—
Sidestand switch Check operation of ignition
circuit cut-off system.
If system is not working correctl y, have Yamaha dealer check vehicle. 3-12
ITEM CHECKS PAGE
2RD-9-E0.book 2 ページ ２０１３年１１月２８日 木曜日 午後４時１８分
Page 39 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
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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
Page 49 of 88
PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU59632
TiresTires are the only contact between the
vehicle and the road. Safety in all con-
ditions of riding depends on a relatively
small area of road contact. Therefore, it
is essential to maintain the tires in good
condition at all times and replace them
at the appropriate time with the speci-
fied tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10504
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total weight of rider, passenger, car-
go, and accessories approved
for this model.WARNING
EWA10512
Never overload your vehicle. Opera-
tion of an overloaded vehicle couldcause an accident.
Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
TIPThe tire tread depth limits may differ
from country to country. Always complywith the local regulations.
Tire air pressure (measured on cold
tires):
Up to 90 kg (198 lbs) load:Front: 175 kPa (1.75 kgf/cm
2, 25 psi)
Rear: 200 kPa (2.00 kgf/cm2, 29 psi)
90 kg (198 lbs) to maximum load:
Front: 200 kPa (2.00 kgf/cm2, 29 psi)
Rear:
225 kPa (2.25 kgf/cm2, 33 psi)
Maximum load*: 150 kg (331 lb)
* Total weight of rider, passenger, car- go and accessories
1. Tire sidewall
2. Tire tread depthMinimum tire tread depth (front and
rear): 1.6 mm (0.06 in)
2RD-9-E0.book 14 ページ ２０１３年１１月２８日 木曜日 午後４時１８分
Page 79 of 88
MOTORCYCLE CARE AND STORAGE
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2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to pro- tect the cylinder, piston rings, etc.
from corrosion.
a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10952]
4. Lubricate all control cables and the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 C (30 F) or more than 30
C (90 F)]. For more information
on storing the battery, see page
6-28.TIPMake any necessary repairs beforestoring the motorcycle.
2RD-9-E0.book 4 ページ ２０１３年１１月２８日 木曜日 午後４時１８分
Page 81 of 88
SPECIFICATIONS
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4th: 0.917 (22/24)
5th:
0.778 (21/27)
Chassis:Frame type: Semi double cradle
Caster angle:
27.70
Trail: 111 mm (4.4 in)Front tire:Type:
With tube
Size: 90/100-18M/C 54S
Manufacturer/model: METZELER/ME77 FrontRear tire:Type:With tube
Size: 110/90-18M/C 61S
Manufacturer/model:
METZELER/ME77
Maximum load: 150 kg (331 lb)
* (Total weight of rider, passenger, cargo and accessories)Tire air pressure (measured on cold
tires):Loading condition:0–90 kg (0–198 lb) Front:
175 kPa (1.75 kgf/cm
2, 25 psi)
Rear:
200 kPa (2.00 kgf/cm2, 29 psi)
Loading condition: 90–150 kg (198–331 lb)
Front:
200 kPa (2.00 kgf/cm2, 29 psi)
Rear:
225 kPa (2.25 kgf/cm2, 33 psi)
Front wheel:Wheel type: Spoke wheel
Rim size:
18x1.85Rear wheel:Wheel type:Spoke wheel
Rim size:
18x2.15Front brake:Type:Single disc brake
Operation:
Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:
Drum brake
Operation: Right foot operation
Front suspension:Type:
Telescopic fork
Spring/shock absorber type: Coil spring/oil damper
Wheel travel: 150 mm (5.9 in)Rear suspension:Type:Swingarm
Spring/shock absorber type: Coil spring/oil damper
Wheel travel:
105 mm (4.1 in)Electrical system:Ignition system:TCI
Charging system:
AC magnetoBattery:Model:GT4B-5
Voltage, capacity:
12 V, 2.5 AhHeadlight:Bulb type:Halogen bulbBulb voltage, wattage quantity:Headlight:
12 V, 60.0 W/55.0 W 1
Tail/brake light: 12 V, 5.0 W/21.0 W 1
Front turn signal light:
12 V, 21.0 W 2
2RD-9-E0.book 2 ページ ２０１３年１１月２８日 木曜日 午後４時１８分