Yamaha F30B 2018, Руководство по обслуживанию

Страница: 11 / 348

0-7
How to use this manual
How to use this manual
Manual format
The format of this manual has been designed to make service procedures clear and easy to under-
stand. Use the following information as a guide for effective and quality service.
• Parts are shown and detailed in an exploded diagram and are listed in the component list (see “1” in
the following figure for an example page).
• The component list consists of the basic removal or disassembly order (“ ”), part names, quantities,
and remarks, which indicate the bolt and screw dimensions and other information (see “2” in the fol-
lowing figure). For the installation or assembly procedure, reverse the order.
• Symbols are used to indicate important aspects of a procedure, such as the grade of lubricant and
the lubrication points (see “3” in the following figure).
• Tightening torque specifications are provided in the exploded diagrams (see “4” in the following fig-
ure), and in the related detailed instructions. Some torque specifications are listed in stages as torque
figures or angles in degrees.
• Separate procedures and illustrations are used to explain the details of removal, checking, and instal-
lation where necessary (see “5” in the following figure for an example page). Detailed explanations of
the procedures are enclosed in
(see “6” in the following figure for an example page).
• Numbers enclosed in brackets are used to indicate the removal or tightening order of bolts, screws,
and other parts (see “7” in the following figure).
TIP:
For troubleshooting procedures, see Chapter 4, “Troubleshooting”.
7-25
Cylinder head
Cylinder head
2
1 1
1
3
6
15
16
16
14
11
4
10
8
7
7
13
12
9
9
9
5
6 N ·m (0.6 kgf·m, 4.4 l b ·ft)
12 N ·m (1.2 kgf·m, 8 .9 l b ·ft)
90°
17 N ·m (1.7 kgf·m, 13 l b ·ft)
34 N ·m (3.4 kgf·m, 25 l b ·ft)
N e w
N e w
N e w
Part name Q’ty Remarks
1 Bolt M6 45 mm 4
2 Oil p u mp assem b ly 1
3 Gasket 1
4 Bolt M6 20 mm 7
5 Cylinder head co v er 1
6 Gasket 1
7 Scre w M4 10 mm 4
8 Plate 1
9 Grommet 5
10 Oil filler cap 1
11 O-ring 1
12 Bolt M6 25 mm 4
13 Bolt M9 93 mm 8
14
Cylinder head assem-
b ly
1
15 Gasket 1
16 Do w el pin 2
7-27
Cylinder head
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
In s tallin g the cylinder head
Before installing the cylinder head, check the
cylinder head
b olts. See “Checking the cylinder
head b olt” (7-26).
1. Check that the hole “a” on the retaining
plate is aligned
w ith the “ △ ” mark “ b ” on
the cylinder b lock.
2. Install:
• Do w el pin
• Cylinder head gasket
• Cylinder head
3. Tighten:
• Cylinder head b olt (M9)
• Cylinder head b olt (M6)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Tighten the cylinder head b olts (M9) “1” to
the specified tor qu es in 3 stages and in the
order [1], [2], and so on.
TIP:
In the third tightening stage for the cylinder
head
b olts (M9) “1”, mark the b olts and cylinder
head w ith identification marks “a”, and then
tighten the b olts 90 from the marks on the cyl-
inder head.
b . Tighten the cylinder head b olts (M6) “2” to
the specified tor qu es in 2 stages and in the
order [9], [10], and so on.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Cylinder head b olt (M9) diameter
difference limit
“a” – “ b ” = Less than 0.13 mm
(0.01 in)
Meas u ring point “c”: 10.0 mm
(0.39 in)
Meas
u ring point “d”: 62.5 mm
(2.46 in)
d
b a
c
b
a
N e w
Cylinder head b olt (M9) “1” [1]–[ 8 ]
1st: 17 N ·m (1.7 kgf·m, 13 l b ·ft)
2nd: 34 N ·m (3.4 kgf·m, 25 l b ·ft)
3rd: 90
Cylinder head b olt (M6) “2” [9]–
[12]
1st: 6 N ·m (0.6 kgf·m, 4.4 l b ·ft)
2nd: 12 N ·m (1.2 kgf·m, 8 .9 l b ·ft)
90
[7]
[3]
[12]
[10]
[9]
[11]
[8]
[4]
[1]
[5]
[2]
[6]
1
2
a
T
R
.
.
1 4 3
2
5 7
6