Valve Lash (Clearance) - Suzuki RA410 Manual

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1. Thickness gauge
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2
3

VALVE LASH (CLEARANCE)

1) Remove negative cable at battery.
2) Remove cylinder head cover referring to item "Cylinder Head
cover" in this section.
3) Using 17 mm wrench, turn crankshaft pulley clockwise until cam
lobes become perpendicular to shim faces at valves
(valve No.s through
ure.
4) Check valve lashes with thickness gauge (1) according to fol-
lowing procedure.
(1) Check valve lashes at valves
(2) Turn camshafts by 180 (by turning crankshaft with wrench).
(3) Make sure that cam lobes are perpendicular to shim faces
at valves to be checked (in this case,
it by turning crankshaft. Check valve lashes.
(4) In the same manner as (2) – (3), check valve lashes at valves
and .
(5) In the same manner as (2) – (3) again, check valve lashes
at valves and
Valve
clearance
specifica-
Intake
tion
Ex-
haust
If valve lash is out of specification, adjust it to specification by re-
placing shim.
Replacement of shim
1) Close the valve whose shim (2) is to be replaced by turning
crankshaft, then turn tappet (1) till its cut section (3) faces inside
as shown in figure.
ENGINE MECHANICAL 6A4-9
are shown in figure) as shown in fig-
and
.
When cold
(Coolant temperature
is 15 – 25 C or
59 – 77 F)
0.18 – 0.23 mm
(0.007 – 0.009 in.)
and
.
)
and , if not, adjust
When hot
(Coolant temperature
is 60 – 68 C or
140 – 154 F)
0.21 – 0.27 mm
(0.008 – 0.011 in.)
0.20 – 0.26 mm
(0.008 – 0.010 in.)