Release 00 - 03/2018
Engine TRE 352
page 31
Service manual
10. ENGINE BLOCK - External repairs
If necessary, remove the engine of the ma-
chine according to indications in paragraph
10.2. Adjusting the valve clearance
WARNING: The adjustment must be made
with the engine is cold.
1 - Dismount the cowl, filter and carburettor
.
2 - Remove the cover and demount the spark plug
3 - Remove lid (5) which is secured with four screws
(6) and remove the washer (7).
4 - Manually set the piston to the TDC (Top Dead
Centre) of the compression stroke so that both
valves are closed.
5 - Use a 0.10 mm (inlet) or a 0,15 mm (exhaust)
feeler gauge (8) to check the gap between the
rocker arm and the tip of the valve stem; the gauge
should pass between without forcing and without
a further gap.
6 - The gap is adjusted by slackening off the nut (9)
and suitably adjusting the register nut (10) until the
above condition is reached.
7 - Following adjustment, check that the pushrods
(11) are properly inserted in the rocker arm housings
(12) and always fully tighten the nut (9).
8 -
When reassembling check the condition
of the gasket (7) of the cover (5) and replace it if
it is damaged.
.
10 - Refit the cowl, the filter and the carburettor
and close the screws to the indicated couple
.
6
5
5
7
7
8
12
10
11
9
9
6
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Summary of Contents for TRE 352
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