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YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
D. Intercylinder Baffle Removal
(1) Turn the baffle retainer hook to
disengage the retainer on the
intercylinder baffle (Figure 14).
(2) Remove the intercylinder baffle and
hook from between the cylinders.
NOTICE: Do not intermix valve and cylinder components between cylinders. Re-install
serviceable parts in the same cylinder.
E. Remove the screws from the rocker box cover (Figure 1).
NOTICE: A silicone rocker box cover gasket can be reused if it is not damaged.
F. Remove the rocker box cover and gasket. Discard a cork gasket.
G. Turn the crankshaft to put the piston at TDC of the compression stroke of the cylinder to be
removed. (With the piston in this position, both intake and exhaust valves are closed and the
piston is extended away from the crankcase to prevent damage when the cylinder is
removed.)
H. Remove both thrust buttons from the ends of the valve rocker shaft (Figure 15).
I. Remove the valve rocker shaft and valve rocker assemblies.
© 2021 Avco Corporation. All Rights Reserved
February 2021
Figure 15
YO-233-B2A Engine Valve Components
Figure 14
Intercylinder Baffles
72-30
Page 111
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