Cylinder head
3. Measure the thermostat valve opening a
at the spec
ified water temperatures.
Replace if out of specification.
Assembling the cylinder head
Do not reuse a gasket or oil seal, always
replace it with a new one.
1. Install a new valve seal a.
2. Install the valve b, spring seat c, valve
spring d, and valve spring retainer e in
this order, and then install the special
service tools f and g.
3. Compress the valve spring, and then
install the valve cotter h.
Water
temperature
Valve opening a
58–62 °C
(136–144 °F)
Starts opening
above 70 °C
(158 °F)
3.0 mm (0.12 in) or above
a
a
Valve spring compressor f
Valve spring compressor attachment g
g
f
e
d
c
b
h
h
129