page 36
Release 00 - 03/2018
Engine TRE 224
Workshop Manual
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14. ENGINE BLOCK - External operations
14.3. Dismantling and cleaning the cylinder head
1 - Remove the cover and demount the spark plug.
2 - Remove the cover.
4 - Remove the exhaust muffler
.
5 - Unscrew the six screws (13) and remove the
cylinder head (14).
6 - Remove the gasket (15).
7 - Clean the cylinder head (14) and cylinder sur-
faces (16).
8 - Carefully clean the inside of the combustion
chamber and remove possible deposits from the
valve seats.
9 - Turn the flywheel by hand to move the piston
and check the internal surface of the cylinder (16).
10 - When mounting:
- the gasket (15) must always be replaced;
- Remount the cylinder head (14) screwing the six
screws (13) without fully tightening, then tighten
them to the given torque values, using a cross-over
sequence.
Take care that the pushrods are positioned cor-
rectly in their housings.
11 - Remount the items removed in the reverse
order used in dismantling.
14
13
14
16
15
13
13
13
13
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