Rato RT150ST-A, Руководство по обслуживанию

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9
.
Timing chain
Check
.
Timing chain
Replace it if the chain is stretched
,
or not flex
-
ible or broken
.
10
.
Timing sprocket and crankshaft sproket
Check
.
Crankshaft sproket
(
on crankshaft
)
If there is wear and damaged
,
replace the
sproket and chain totally
11
.
Guide plate
1
)
Check
.
Lower guide plate
① (
exhaust side
)
.
Upper guide plate
②
(intake side)
Replace it if it is worn or damaged
.
Substract the outer diameter of rocker shaft
from inner diameter of valve rocker hole to
calculate the clearance
.
Clearance between rocker hole and shaft
=@-
Inner diameter of valve rocker hole
@
Outer diameter of rocker shaft
Clearance between rocker shaft and hole
:
0
.
009
-
0
.
037mm
(
0
.
0004
-
0
.
0031 in
)
Limit
:
0
.
037mm
(
0
.
0015 in
)
Replace a set if unqualified
12
.
Chain tensioner
1
)
Check
.
Pushing rod of chain tensioner ①
.
Washer
②
Replace it if it is worn or damaged
-
101
-