Yamaha MAJESTY 400 User Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
1
2
3
4
5
6
7
8
9
necessary.
To install the spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
2. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
NOTE:
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.
4. Install the spark plug cap.
NOTE:
Make sure the spark plug wire is fas-
tened in the clamp as shown.
5. Install the spark plug cover by in-
stalling the screws.
6. Place the storage compartment
mat in the original position.
7. Close the rider seat.
Specified spark plug:
NGK/CR7E
1. Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
1
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9 ft·lbf)
1. Spark plug cap
2. Spark plug wire clamp
1
2

Yamaha MAJESTY 400 Specifications

General

Displacement	395 cc
Bore x Stroke	83.0 mm x 73.0 mm
Compression Ratio	10.6:1
Fuel System	Fuel Injection
Ignition	TCI
Starter System	Electric
Transmission	V-belt automatic
Front Suspension	Telescopic fork
Rear Suspension	Unit Swing
Front Tire	120/80-14
Rear Tire	150/70-13
Length	2, 230 mm
Seat Height	760 mm
Wheelbase	1, 565 mm
Fuel Capacity	14 liters
Maximum Torque	36.0 Nm (3.7 kg-m) @ 6, 000 rpm
Rear Brake	Single disc