Yamaha XV19SX(C), Service Manual

Page: 283 / 494

CAMSHAFTS
5-34
2. Install:
• Push rod covers “1”
NOTE:
Install the push rod covers so that their paint
marks “a” are facing towards the cylinder heads.
EAS24070
INSTALLING THE ROCKER ARMS AND
PUSH RODS
The following procedure applies to both cylin-
ders.
1. Install:
• Rocker arms “1”
• Rocker arm shafts “2”
(onto rocker arm base)
NOTE:
The thread hole “a” of the rocker arm shaft must
face to the outside.
2. Install:
• Rocker arm base
(with rocker arms)
• Push rods
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Put the rocker arm base on the cylinder head.
b. Install the push rods.
NOTE:
• Be sure to correctly install the push rods be-
tween the rocker arms and valve lifters as
shown. The illustration is viewed from the right
side of the vehicle.
• The lengths of push rod 1 and push rod 2 are
different. Therefore, be sure to install them in
the proper position.
• Lubricate the push rod end balls with engine
oil.
c. Install the rocker arm base bolts (M6) “1” and
rocker arm base bolts (M8) “2” and “3”.
NOTE:
Tighten the rocker arm base bolts in stages and
in a crisscross pattern.
E
a
a
1
1
1
2
a
a
A. Rear cylinder
B. Front cylinder
1. Exhaust side rocker arm
2. Intake side rocker arm
3. Exhaust valve lifter
4. Intake valve lifter
5. Push rod 1 l = 286.5 mm (11.280 in)
6. Push rod 2 l = 288.5 mm (11.358 in)
T
R
.
.
Rocker arm base bolt (M6)
10 Nm (1.0 m·kg, 7.2 ft·lb)
Rocker arm base bolt (M8)
24 Nm (2.4 m·kg, 17ft·lb)