Filter
Top Products
(2)
Lubricate oil seal and bearing surfaces. Add a light film of oil on main bearing cover face
to
hold
gasket in place.
Place spacers chosen at procedure
(1)
on crankshaft and camshaft.
Use an oil seal guide when installing main bearing cover to avoid damaging the seal.
Tap cover into place with a soft hammer.
Main bearing cover
M8
X
40
mm
bolt and washer
***e
7
pcs.
Tightening torque
170-190
kg
*cm
16.7-1
8.6
N
m
12.3-L.13.7
ft
4
Ib
7
5-4-8
BREATHER VALVE
Attach breather plate (breather valve) and breather cover to crankcase using proper gaskets.
Put
breather plate in such position as its reed valve opens outside towards main bearing cover.
Replace gaskets with new ones
if
they are torn
or
damaged.
5-4-9
CYLINDER HEAD
(1)
Clean carbon
and
gum deposits from
the
valves, seats, ports and guides. Inspect valves, valve
(2)
Replace valves that are badly burned, pitted
or
warped.
(3)
When installing valves in cylinder head, oil valve stems and insert them into valve guide.
Then place cylinder head on flat table, install washer, valve spring and spring retainer.
(4)
Valve guides should
be
replaced when valve stem clearance exceeds specifications
(See
"SERVICE
DATA"
)
.
Draw valve guides out and press new guides in.
Refer to
"SERVICE
DATA"for clearance specifications.
After replacing valves and guides, lap valves in place until a uniform ring shows around the
face
of
the valve. Clean valves
and
wash cylinder head thoroughly.
Tighten five flange bolts evenly in three steps by the following tightening torque
:
Cylinder head M10
X
75
mm
bolt
0
4
pcs.
M10x42
mm
bolt*-*-
1
pcs.
seats and valve guides.
(5)
Install cylinder head
to
cylinder with new head gasket.
I
Tightening torque
1
I
1st
step
I
2nd
step
I
final
step
I
100
kg*cm
33.3-41.2
N
m
19.6
N
m
9.8
N.
m
340-420
kg
cm
200
kg
*cm
I
7.2
ft
*
Ib
I
14.5
ft
-
Ib
I
24.6-30.4
ft
Ib
I
5-4-
10
ROCKER
ARMS
AND PUSH RODS
(1)
Insert push rods into crankcase.
(2)
Apply
oil
to rocker arms and assemble them to cylinder head using rocker shaft and spacer.
Put push rod
tip
in the hollow of tappet top.
-
37
-