Checking The Camshaft Cap; Installing The Valves - Yamaha FZS600'98 Service Manual

2
a
Large
Small
b
VALVES AND VALVE SPRINGS
1
2
2
1
5
4
3
2
4-23
EB403440

CHECKING THE CAMSHAFT CAP

1. Check:
S camshaft case
S camshaft caps 1
Cracks/damage ! Replace th camshaft
case and camshaft caps as a set, and
check the camshafts (Refer to "CHECK-
ING THE CAMSHAFTS".).
S camshaft bearing surfaces 2
Damage/pitting/scratches ! Replace the
camshaft case and camshaft caps as a
set, and check the camshafts (Refer to
"CHECKING THE CAMSHAFTS".).
2. Check:
S oil delivery pipes 1
Damage ! Replace the defective part(-s).
Dirt/obstruction ! Wash the pipe(-s) and
then blow it out with compressed air.
EB403700

INSTALLING THE VALVES

The following procedure applies to all of the
valves and related components.
1. Deburr:
S valve stem end
(with an oil stone)
2. Lubricate:
S valve stem 1
S oil seal
(with the recommended lubricant)
Recommended lubricant
Molybdenum disulfide oil
3. Install:
S valve 1
S lower spring seat 2
S oil seal 3
S valve spring 4
S upper spring seat 5
(into the cylinder head)
NOTE:
Install the valve spring with the larger pitch
a facing up.
Smaller pitch
b
4. Install:
S valve cotters 1
NOTE:
Install the valve cotters by compressing the
valve spring with the valve spring compres-
sor 2 and attachment 3 .
ENG