● Remove the venturi plate secured with three screws.
● Remove the two screws securing the fan to the gas manifold, see fig 11.1.
Fig. 11.1 Fan removal
Check the gasket and replace if necessary.
NOTE:
The ecoTEC plus 428 and 438 fan is secured through an extension piece with two
securing screws, check and replace any seals or gaskets if necessary.
11.5 Replacing the heat exchanger
Fig. 11.2 Heat exchanger removal
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