Westerbeke 90A FOUR — Lay-up Procedures
Maintenance · Engine
For the Westerbeke 90A FOUR, from the Westerbeke operator's manual.
Before you start
- Do not leave the engine's old engine oil in the sump over the lay-up period.
Procedure
- With the engine warm, drain all the engine oil from the oil sump; remove and replace the oil filter and fill the sump with new oil.
- Top off your fuel tanks with No. 2 diesel; add fuel additives such as BioBor and Diesel Kleen + Cetane Boost.
- Change the element in your primary fuel filter/water separator and clean the separator sediment bowl.
- Close the through-hull seacock, remove the raw water intake hose and draw fresh water then an antifreeze solution through the raw water system.
- Remove the raw water pump impeller; acquire a replacement if needed and a cover gasket; replace the cover and gasket.
- Place a clean cloth lightly soaked in lubricating oil in the opening of the intake manifold and block the thru-hull exhaust port.
- Check the zinc anode in the primary heat exchanger and clean or replace it as required.
- Check or change the transmission fluid as required and protect the coupling and output flange with an anti-corrosion coating.
Source: Westerbeke operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.