YAMAHA MAJESTY 400 2011 Repair Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
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TIP

The coolant should be between the
minimum and maximum level marks.
5. If the coolant is at or below the
minimum level mark, open the
coolant reservoir cap, add coolant
to the maximum level mark, and
then close the coolant reservoir
cap.
WARNING! Remove only
the coolant reservoir cap. Never
attempt to remove the radiator
cap when the engine is
hot.
[EWA15161]

NOTICE:
If coolant is
not available, use distilled water
or soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant willbe reduced.
[ECA10472]

6. Install the coolant reservoir cover
by installing the screw.
7. Place the right floorboard mat in
the original position.
EAU34206
Air filter elements and check
hoses and V-belt case air filter
element
The air filter elements and the V-belt
case air filter element should be ser-
viced at the intervals specified in the
periodic maintenance and lubrication
chart. Service all air filter elements
more frequently if you are riding in un-
usually wet or dusty areas.
Replacing the air filter elements
1. Place the scooter on the center-
stand.
TIP

Continue as follows for each air filter el-
ement.
2. Remove the air filter case cover by
removing the rubber caps and
screws.
1. Minimum level mark
2. Maximum level mark
3. Coolant reservoir cap
Coolant reservoir capacity (up to the
maximum level mark):
0.32 L (0.34 US qt, 0.28 Imp.qt)
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9Left
Right
3. Pull the air filter element out.
Left
Right
4. Insert a new air filter element into
the air filter case.
5. Install the air filter case cover by in-stalling the screws.
NOTICE:
Make sure that each filter ele-
ment is properly seated in its
case. Always replace both air fil-
ter elements at the same time,
otherwise poor engine perfor-
mance or damage to the engine
may result. The engine should
never be operated without the
filter elements installed, other-
wise the piston(s) and/or cylin-
der(s) may become excessively
worn.

[ECA12923]

6. Install the rubber cap.
To clean the air filter check hoses
1. Check the hose at the bottom of
both air filter cases for accumulat-
ed dirt or water.
1. Screw
2. Air filter case cover
3. Rubber cap
1. Screw
2. Air filter case cover
3. Rubber cap
1
21
13
3
1
1
23

1. Air filter element
1. Air filter element
1
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9 Left
Right
2. If dirt or water is visible, remove
the hose, clean it, and then install
it.
Cleaning the V-belt case air filter el-
ement
1. Remove cowling E. (See
page 6-7.)
2. Remove panel A. (See page 6-7.)
3. Remove the left air filter case cov-
er.
4. Remove the V-belt air filter case
cover by removing the screws.
5. Remove the V-belt case air filter
element by removing the screws.6. Lightly tap the V-belt case air filter
element to remove most of the
dust and dirt, and then blow out the
dirt with compressed air as shown.
7. Check the V-belt case air filter ele-
ment for damage and replace it if

1. Air filter check hose
1. Air filter check hose
1
1

1. Screw
2. V-belt air filter case cover
2
111

1. Screw
2. V-belt case air filter element
2
1 1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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necessary.
8. Install the V-belt case air filter ele-
ment by installing the screws.
NOTICE:
Make sure that the
V-belt filter element is properly
seated in its case.

[ECA12941]

9. Install the V-belt air filter case cov-
er by installing the screws.
10. Install the left air filter case cover.
11. Install the panel.
12. Install the cowling.
EAU21384
Checking the throttle grip free
play
The throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, have a Yamaha
dealer adjust it.
EAU21401
Valve clearance
The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Throttle grip free play1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU21875
Tires
To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING

EWA10503
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

EWA10511
Never overload your vehicle. Opera-
tion of an overloaded vehicle could
cause 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.
TIP

The tire tread depth limits may differ
from country to country. Always comply
with the local regulations.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Front:
200 kPa (2.00 kgf/cm
2

, 29 psi)
Rear:
250 kPa (2.50 kgf/cm
2

, 36 psi)
YP400 90–188 kg (198–414 lb)
YP400A 90–185 kg (198–408 lb):
Front:
200 kPa (2.00 kgf/cm 2
, 29 psi)
Rear:
250 kPa (2.50 kgf/cm 2
, 36 psi)
Maximum load*:
YP400 188 kg (414 lb)
YP400A 185 kg (408 lb)
* Total weight of rider, passenger, car-
go and accessories
1. Tire sidewall
2. Tire tread depth
Minimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
12
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9Tire information
This model is equipped with tubeless
tires.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING

EWA10471

Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability and
can lead to loss of control.

The replacement of all wheel
and brake-related parts, includ-
ing the tires, should be left to aYamaha dealer, who has the
necessary professional knowl-
edge and experience to do so.

Ride at moderate speeds after
changing a tire since the tire
surface must first be “broken
in” for it to develop its optimal
characteristics.
EAU21994
Cast wheels
To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.

The wheel rims should be checked
for cracks, bends, warpage or oth-
er damage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.

The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.

After repairing or replacing the rear
tire, tighten the valve stem nut and
locknut to the specified torques.
Front tire:
Size:
120/80-14M/C 58S
Manufacturer/model:
IRC/MB67
DUNLOP/D305FL
Rear tire:
Size:
150/70-13M/C 64S
Manufacturer/model:
IRC/MB67
DUNLOP/D305L
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU50860
Checking the front and rear
brake lever free play
Front
Rear
There should be no free play at thebrake lever ends. If there is free play,
have a Yamaha dealer inspect the
brake system.
WARNING

EWA14211
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.
1. Valve stem nut
2. Valve stem locknut
Tightening torques:
Valve stem nut:
2.0 Nm (0.2 m·kgf, 1.4 ft·lbf)
Valve stem locknut:
3.0 Nm (0.3 m·kgf, 2.2 ft·lbf)
1
2

1. No brake lever free play
1. No brake lever free play
1
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU33473
Adjusting the rear brake lock
lever cable
Rear brake lock lever cable adjustment
may be required if the rear brake lock
lever does not hold properly. When the
rear brake lock lever is not in use, the
rear brake lock lever cable length
should measure 45 mm to 47 mm
(1.77 in to 1.85 in) at the rear brake cal-
iper. Periodically check the rear brake
lock lever cable length and, if neces-
sary, adjust it as follows.
To increase the rear brake lock lever
cable length, turn the adjusting nut at
the rear brake caliper in direction (a).To decrease the rear brake lock lever
cable length, turn the adjusting nut in
direction (b).
WARNING

EWA10650
If proper adjustment cannot be ob-
tained as described, have a Yamaha
dealer make this adjustment.
EAU22392
Checking the front and rear
brake pads
The front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU22430
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
1. Adjusting nut
2. Rear brake lock lever cable length
1
2
(b) (a)

1. Wear indicator groove
11
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PERIODIC MAINTENANCE AND ADJUSTMENT
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indicator grooves have almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.

EAU34210
Rear brake pads
Have a Yamaha dealer check each
rear brake pad for damage and mea-
sure the lining thickness and if neces-
sary, replace them as a set.
EAU40260
Checking the brake fluid level
Front brake
Rear brake
Insufficient brake fluid may allow air to
enter the brake system, possibly caus-ing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake fluid
level may indicate worn brake pads
and/or brake system leakage. If the
brake fluid level is low, be sure to check
the brake pads for wear and the brake
system for leakage.
Observe these precautions:

When checking the fluid level,
make sure that the top of the brake
fluid reservoir is level.

Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking perfor-
mance.

Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.

Be careful that water or dust does
not enter the brake fluid reservoir
when refilling. Water will signifi-
1. Minimum level mark
1. Minimum level mark
1
1

Recommended brake fluid:
DOT 4
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PERIODIC MAINTENANCE AND ADJUSTMENT
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cantly lower the boiling point of the
fluid and may result in vapor lock,
and dirt may clog the ABS hydrau-
lic unit valves.


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.

As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
EAU22731
Changing the brake fluid
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the master cylinders and
calipers as well as the brake hoses re-
placed at the intervals listed below or
whenever they are damaged or leak-
ing.

Oil seals: Replace every two
years.

Brake hoses: Replace every four
years.
EAU23095
Checking and lubricating the
cables
The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10711]

Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil
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