Checking The Valve Springs; Installing The Valves - Yamaha XVS1100(L) Service Manual

VALVE AND VALVE SPRINGS
EAS00241

CHECKING THE VALVE SPRINGS

The following procedure applies to all of the
valve springs.
1. Measure:
S valve spring free length a
Out of specification ! Replace the valve
spring.
2. Measure:
S compressed spring force a
Out of specification ! Replace the valve
spring.
b Installed length
3. Measure:
S valve spring tilt c
Out of specification ! Replace the valve
spring.
EAS00245

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
S oil seal
(with the recommended lubricant)
3. Install:
S valve
S lower spring seat
S oil seal
S valve spring
S upper spring seat
(into the cylinder head)
4-26
ENG
Valve spring free length (intake
and exhaust)
44.6 mm
<Limit>: 43.5 mm
Compressed spring force
Intake and exhaust spring
160.7 N (16.4 kg) at 40 mm
Spring tilt limit
Intake and exhaust valve spring
2.5_/1.9 mm
New
Recommended lubricant
Molybdenum disulfide oil
New