83
Move the fuel valve to “CLOSE” (Fig. 140). Remove
the sediment sump and the “O” ring (Fig. 141),
then wash them in solvent that is either non-
inflammable or only slightly inflammable. Leave
them to dry well and then replace them. Open the
fuel cock and check that it does not leak.
140
141
11.11.5
Spark plugs (only for petrol engines)
WARNING
Never use a spark plug with an unsuitable thermal range. In order for the engine to perform well, the
spark plug must be clean and the electrodes must be at the right distance.
1
Remove the cap from the spark plug and use
a spark plug key of the right size to remove
the spark plug (Fig. 142).
142
Maintenance
Содержание MCH 13/DH
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