Craftsman Marine — Flue Removal

A Craftsman Marine service procedure — check it applies to your exact model before use.

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Procedure

1. Unscrew and remove the exhaust silencer (F).
2. Detach the 3/16 inch copper tube connector (C) from the Steam Gauge (E) at the ferrule nearest the steam gauge. Then, remove the copper tube entirely by freeing it at the other ferrule.
3. Apply inward pressure at either sides of the Flue at points (1) and (2) with a screwdriver. This will collapse the side walls slightly to allow the small fluted sections of sheet metal to clear the edges of the flue opening provided in the outer shell. With the restrictions of the flutes removed, the Flue may then be lifted up over the pans it houses.
4. To replace the Flue, reverse the above steps.

Source: manual:MAR-SB-ST-E_spm.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.