Suzuki F6A Service Manual page 65

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Wash all disassembled parts clean, removing,
grease, carbon and scales, before inspecting
them to determine whether repair is necessary
or not.
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Descale water jackets
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Used compressed air to clear internal oil holes
and passages.
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Do not disturb set combinations of valves, bear-
ings, bearing caps, etc. Have the sets segre-
gated and identified.
Cylinder Head
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Remove all carbon from combustion chambers.
NOTE:
Do not use any sharp–edged tool to scrape off the
carbon. Be careful not to scuff or nick metal sur-
faces when de–carboning. This applies to valves
and valve seats, too.
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Check cylinder head for cracks in intake and
exhaust ports, combustion chambers and head
surface.
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Flatness of gasketed surface:
Using a straightedge and thickness gauge,
check the flatness at a total of 6 locations. If the
limit, stated below, is exceeded, correct gas-
keted surface with a surface plate and abrasive
paper of about #400 (water proof silicon carbide
abrasive paper): place paler on and over surface
plate, and rub gasketed surface against paper to
grind off high spots. Should this fail to reduce
thickness gauge readings to within the limit,
replace cylinder head.
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Leakage of combustion gases from this gas-
keted joint is often due to a warped gasketed
surface; such leakage results in reduced power
output and hence an increased amount of fuel
expense.
Limit of distortion 0.05 mm (0.002 in.)
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Distortion of manifold seating faces:
the seating faces of cylinder head for manifolds,
using a straightedge and thickness gauge, in
order to determine whether these faces should
be corrected or the cylinder head replaced.
Limit of distortion
Check
0.10 mm (0.004 in.)
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