pag. 36
Release 00 - 02/2008
Engine WBE 0701-WBE 0704
Service manual
13. ENGINE BLOCK - External operations
13.2. Adjusting the valve clearance
WARNING: The adjustment must be made
with the engine is cold.
1 - Remove the cover and demount the spark plug
[ 13.1].
2 - Remove lid (5) which is secured with four screws
(6) and remove the washer (7).
3 - Manually set the piston to the TDC (Top Dead
Centre) of the compression stroke so that both
valves are closed.
4 - Use a 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.
5 - The gap is adjusted by slackening off the nut (9)
and suitably adjusting the register nut (10) to obtain
the following values:
Inlet - IN = 0,10 - 0,15
Exhaust - EX = 0,15 - 0,20
6 - Following adjustment, check that the pushrods
(11) are properly inserted in the rocker arm housings
(12) and always fully tighten the nut (9).
7 -
When reassembling check the condition
of the gasket (7) of the cover (5) and replace it if
it is damaged.
Tighten the screws (6) to the torque
indicated.
8 - Assemble the spark plug [ 13.1].
6
5
7
8
9
10
11
12
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