2008 YAMAHA MAJESTY 400 engine coolant

PERIODIC MAINTENANCE AND MINOR REPAIR
6-41
2
3
4
5
67
8
9 Engine overheating
WARNING

EWAT1040

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the cap
while turning it counterclockwise, and then remove the cap.
NOTE:

If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.

8-1
1
2
3
4
5
6
7
8
9

SPECIFICATIONS
EAU2633M
Dimensions:
Overall length:
2230 mm (87.8 in)
Overall width:
780 mm (30.7 in)
Overall height:
1380 mm (54.3 in)
Seat height:
760 mm (29.9 in)
Wheelbase:
1565 mm (61.6 in)
Ground clearance:
120 mm (4.72 in)
Minimum turning radius:
2600 mm (102.4 in)
Weight:
With oil and fuel:
YP400 219.0 kg (483 lb)
YP400A 223.0 kg (492 lb)
Engine:
Engine type:
Liquid cooled 4-stroke, DOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
395.0 cm
3

Bore
×
stroke:
83.0
×
73.0 mm (3.27
×
2.87 in)
Compression ratio:
10.60 :1Starting system:
Electric starter
Lubrication system:
Wet sump

Engine oil:
Type:
SAE 10W-30, SAE 10W-40, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO stan-
dard MA
Engine oil quantity:
Without oil filter element replacement:
1.50 L (1.59 US qt) (1.32 Imp.qt)
With oil filter element replacement:
1.70 L (1.80 US qt) (1.50 Imp.qt)
Final transmission oil:
Type:
SAE 10W-30 type SE motor oil
Quantity:
0.25 L (0.26 US qt) (0.22 Imp.qt)
Cooling system:
Coolant reservoir capacity (up to the maxi-
mum level mark):
0.32 L (0.34 US qt) (0.28 Imp.qt)
Radiator capacity (including all routes):
1.57 L (1.66 US qt) (1.38 Imp.qt)
Air filter:
Air filter element:
Oil-coated paper element
Fuel:
Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
14.0 L (3.70 US gal) (3.08 Imp.gal)
Fuel injection:
Throttle body:
Manufacturer:
AISAN
Spark plug (s):
Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Clutch:
Clutch type:
Dry, centrifugal automatic
Transmission:
Primary reduction system:
Helical gear
Primary reduction ratio:
31/14 (2.214)
Secondary reduction system:
Helical gear
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50

INDEX
A
ABS (for ABS models) .............................3-12
ABS warning light (for ABS models) ..........3-4
Acceleration and deceleration ...................5-2
Air filter elements and check hoses and
V-belt case air filter element ..................6-19
Anti-theft alarm (optional) ..........................3-9
Auxiliary light bulb, replacing ...................6-38
B
Battery .....................................................6-32
Brake fluid, changing ...............................6-28
Brake fluid level, checking .......................6-27
Brake lever, front .....................................3-11
Brake lever, rear ......................................3-11
Brake levers, lubricating ..........................6-29
Braking ......................................................5-2
C
Cables, checking and lubricating .............6-28
Care ...........................................................7-1
Catalytic converters .................................3-14
Centerstand and sidestand, checking and
lubricating ..............................................6-29
Coolant ....................................................6-17
Cowlings and panels, removing and
installing ..................................................6-7
D
Dimmer switch .........................................3-10
E
Engine break-in .........................................5-4
Engine oil and oil filter element ................6-13
Engine stop switch...................................3-10
Engine trouble warning light ......................3-4
F
Final transmission oil ...............................6-16Front and rear brake lever free play ........ 6-25
Front and rear brake pads, checking....... 6-26
Front fork, checking ................................. 6-30
Fuel ......................................................... 3-14
Fuel consumption, tips for reducing .......... 5-3
Fuel tank cap ........................................... 3-13
Fuses, replacing ...................................... 6-33
H
Handlebar switches ................................... 3-9
Hazard switch .......................................... 3-10
Headlight bulb, replacing ......................... 6-35
High beam indicator light ........................... 3-3
Horn switch.............................................. 3-10
I
Identification numbers ............................... 9-1
Ignition circuit cut-off system ................... 3-20
Immobilizer system.................................... 3-1
Immobilizer system indicator light ............. 3-4
Indicator and warning lights....................... 3-3
K
Key identification number .......................... 9-1
L
License plate light bulb, replacing ........... 6-38
M
Main switch/steering lock .......................... 3-2
Matte color, caution ................................... 7-1
Model label ................................................ 9-2
Multi-function display ................................. 3-5
P
Parking ...................................................... 5-4
Part locations............................................. 2-1
Pass switch ............................................. 3-10
Periodic maintenance and lubrication
chart ........................................................ 6-3Pre-operation check list............................. 4-2
R
Rear brake lock lever .............................. 3-11
Rear brake lock lever cable, adjusting .... 6-26
Rider seat, adjusting ............................... 3-16
S
Safe-riding points ...................................... 1-4
Safety information ..................................... 1-1
Seats ....................................................... 3-15
Shock absorber assemblies, adjusting.... 3-18
Sidestand ................................................ 3-19
Spark plug, checking ............................... 6-11
Specifications ............................................ 8-1
Speedometer............................................. 3-5
Starting off ................................................. 5-2
Starting the engine .................................... 5-1
Start switch.............................................. 3-10
Steering, checking................................... 6-31
Storage...................................................... 7-3
Storage compartments ............................ 3-17
T
Tachometer ............................................... 3-5
Tail/brake light ......................................... 6-36
Throttle cable free play, checking ........... 6-22
Throttle grip and cable, checking and
lubricating ............................................. 6-29
Tires ........................................................ 6-22
Tool kit....................................................... 6-1
Troubleshooting ...................................... 6-39
Troubleshooting charts............................ 6-40
Turn signal indicator lights ........................ 3-3
Turn signal light bulb (front), replacing .... 6-36
Turn signal light bulb (rear), replacing..... 6-37
Turn signal switch ................................... 3-10