Section
01 V-810
ENGINE
Subsection
05
(CYLINDER AND HEAD)
1.
Camshaft retaining plate position
2.
Slot retaining camshaft
3.
Direction of movement
For other parts, refer to proper installation proce
dure.
VALVE SPRING
Removal
Remove:
- rocker arms (see
ROCKER ARM
above)
- cylinder head (see
CYLINDER HEAD
above).
Compress valve spring no.
11;
use valve spring
compressor clamp (P/N
529 035 724)
and valve
spring compressor cup (P/N
529 035 725).
&
WARNING
Always wear safety glasses when disassem
bling valve springs. Be careful when unlock
ing valves. Components could fly away be
cause of the strong spring preload.
44
1.
Valve spring compressor clamp
2.
Valve spring compressor cup
3.
Valve colter
LOCATE VALVE SPRING COMPRESSOR CLAMP IN
CENTER OF THE VALVE
Remove valve cotters no.
9.
Withdraw valve spring compressor, valve spring
retainer no.
10
and valve spring no.
11.
Inspection
Check valve spring for visible damages.
If
so, re
place valve spring.
Check valve spring for free length and straight
ness.
A.
Valve spring length
VALVE SPRING FREE LENGTH
Nominal
New
40.81 mm (1.607 in)
Service
limit
39.00 mm
(1.535
in)
Replace valves springs if not within specifications.
Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
Colored area of the valve spring must be placed
on top.
To ease installation of cotters, apply oil or grease
on them so that they remain in place while releas
ing the spring.
NOTE:
Valve cotter must be properly engaged in
valve stem grooves.
After spring is installed. ensure it is properly
locked by tapping on valve stem end with a soft
hammer so that valve opens and closes a few
times.
CAUTION:
An improperly locked valve spring
will cause engine damage.
1. Position
of the valve spring
2.
Valve cotter
Section
01 V-810
ENGll
Subsection
05
(CYLINDER AND HEA
VALVE
Removal
Remove valve spring, see
VALVE SPRING
abO\
Push valve stem, then pull valves no.
16
(inta
and no.
17
(exhaust) out of valve guide.
1.
Intake valves
31
mm
2.
Exhaust valves
27
mm
Remove valve stem seal no.
12
with Snap-ON
�
ers (P/N YA
8230).
