Have 3.3 Mercury WD3S 1947-48 and Wizard WD3 1946. Bought Wizard 2/12/1954 (when 9 years old) still running in 2010. Found it has a crack in the water jacket on the head. Can it be repaired? And may have clogged water passages. Best way to clean them out? Mercury is identical and complete but frozen. Located in SW Florida. Any help appreciated. Bill
JB Weld or similar product might fix crack in water jacket. A replacement water jacket plus a check for blockage in cooling water circuit would be my preference.
The modular construction of the early K Model Mercurys and Wizards make repair a doable option
even if they have a serious corrosion or wear issue.
If you decide to work on them feel free to contact me.
Currently I have a prewar KB-1A and a post war KD3 torn down for rebuilding.
80% of time and effort is getting motor disassembled and parts cleaned.